deploy: 6c929163f8
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Relism
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import{_ as i,c as a,a0 as n,o as t}from"./chunks/framework.p2VkXzrt.js";const e="/assets/hdi.CNuX0-qb.png",h="/assets/hdichain.FX-X2Mhu.png",c=JSON.parse('{"title":"⚡ Handler Default Implementations (HDI)","description":"","frontmatter":{"banner_title":"Flash - Handler Default Implementations","banner_description":"Leverage HDIs for cleaner and more maintainable route logic.","head":[["meta",{"name":"twitter:image","content":"/assets/banner-cards/flash-advanced-handler-default-implementations.png"}],["meta",{"name":"twitter:image:src","content":"https://docs.pixel-services.com/assets/banner-cards/flash-advanced-handler-default-implementations.png"}],["meta",{"name":"twitter:card","content":"summary_large_image"}],["meta",{"name":"twitter:image:height","content":"1280"}],["meta",{"name":"twitter:image:width","content":"669"}],["meta",{"name":"twitter:description","content":""}]]},"headers":[],"relativePath":"flash/advanced/handler-default-implementations.md","filePath":"flash/advanced/handler-default-implementations.md"}'),l={name:"flash/advanced/handler-default-implementations.md"};function p(k,s,r,d,E,o){return t(),a("div",null,s[0]||(s[0]=[n('<h1 id="⚡-handler-default-implementations-hdi" tabindex="-1">⚡ Handler Default Implementations (HDI) <a class="header-anchor" href="#⚡-handler-default-implementations-hdi" aria-label="Permalink to "⚡ Handler Default Implementations (HDI)""></a></h1><p>Handler Default Implementations (HDIs) offer a streamlined approach to standardize common behaviors across request handlers in Flash. By extending a base <code>RequestHandler</code> (or chaining multiple base handlers), you can centralize tasks like authentication, user data retrieval, and rate limiting while keeping your code modular and maintainable.</p><p>HDIs use the <a href="https://en.wikipedia.org/wiki/Chain-of-responsibility_pattern" target="_blank" rel="noreferrer">Chain of Responsibility pattern</a> to layer reusable logic, ensuring that shared functionality is defined once and inherited by all handlers.</p><p><img src="'+e+`" alt="HDI"></p><h2 id="🔗-how-hdis-work" tabindex="-1">🔗 How HDIs Work <a class="header-anchor" href="#🔗-how-hdis-work" aria-label="Permalink to "🔗 How HDIs Work""></a></h2><p>Rather than repeating common logic across different handlers, HDIs allow you to create <strong>abstract base handlers</strong> that encapsulate shared behaviors. When your individual request handlers extend these bases, they automatically inherit predefined functionality, and you only need to implement request-specific logic.</p><h3 id="key-benefits" tabindex="-1">Key Benefits <a class="header-anchor" href="#key-benefits" aria-label="Permalink to "Key Benefits""></a></h3><ul><li><p><strong>Build-Time Optimization:</strong><br> When your project is compiled, Flash’s router merges the entire HDI chain into a single handler instance. This eliminates extra function calls and runtime lookups, resulting in a leaner execution path compared to traditional middleware stacks.</p></li><li><p><strong>Reduced Complexity:</strong><br> Unlike frameworks that rely on reflection (e.g., Spring Boot) or a deep middleware stack (e.g., Express.js), HDIs embed inherited behavior directly in the compiled class, minimizing runtime overhead.</p></li><li><p><strong>Type Safety & Clean State Management:</strong><br> Protected fields in HDIs allow seamless data sharing between handlers without using global variables, callbacks, or type casting. Note: Always declare these fields as instance (non-static) variables to ensure each handler maintains its own state.</p></li></ul><h2 id="🛡️-hdi-design-guidelines" tabindex="-1">🛡️ HDI Design Guidelines <a class="header-anchor" href="#🛡️-hdi-design-guidelines" aria-label="Permalink to "🛡️ HDI Design Guidelines""></a></h2><h3 id="_1-base-hdi-class" tabindex="-1">1. Base HDI Class <a class="header-anchor" href="#_1-base-hdi-class" aria-label="Permalink to "1. Base HDI Class""></a></h3><p>Define an abstract base class that extends <code>RequestHandler</code> to encapsulate common logic:</p><ul><li><p><strong>Constructor:</strong><br> Initialize by passing <code>Request</code> and <code>Response</code> objects to the superclass.</p></li><li><p><strong>Overridden <code>handle</code> Method:</strong><br> Implement common logic and delegate to an abstract method for custom behavior.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handle</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Insert common logic here (e.g., logging, header processing)</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleCustom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li><li><p><strong>Abstract Method:</strong><br> Declare an abstract method that must be implemented by subclasses.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleCustom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span></code></pre></div></li><li><p><strong>Protected Fields:</strong><br> Use protected instance fields to share data between HDI layers.</p><blockquote><p><strong>Warning:</strong> Do <strong>not</strong> declare these fields as static. Each handler should manage its own state.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Incorrect: static field</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> static</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String data;</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Correct: instance field</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String data;</span></span></code></pre></div></blockquote></li></ul><h3 id="_2-concrete-handler-implementation" tabindex="-1">2. Concrete Handler Implementation <a class="header-anchor" href="#_2-concrete-handler-implementation" aria-label="Permalink to "2. Concrete Handler Implementation""></a></h3><p>Extend the base HDI class in your handler:</p><ul><li><p><strong>Constructor:</strong><br> Call the super constructor with the necessary <code>Request</code> and <code>Response</code> objects.</p></li><li><p><strong>Implement <code>handleCustom()</code>:</strong><br> Write the request-specific logic here. Protected fields from the base class are available within this method.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleCustom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Custom logic using inherited data</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "Response"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li></ul><h2 id="🛠️-example-api-key-authentication" tabindex="-1">🛠️ Example: API Key Authentication <a class="header-anchor" href="#🛠️-example-api-key-authentication" aria-label="Permalink to "🛠️ Example: API Key Authentication""></a></h2><p>This example demonstrates how to build an HDI that validates an API key before processing a request.</p><h3 id="abstract-api-key-protected-handler" tabindex="-1">Abstract API Key Protected Handler <a class="header-anchor" href="#abstract-api-key-protected-handler" aria-label="Permalink to "Abstract API Key Protected Handler""></a></h3><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> APIKeyProtectedHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> RequestHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String apiKey;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> APIKeyProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
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<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handle</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> apiKey </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> req.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">header</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"X-API-Key"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (apiKey </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">==</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> ||</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> !</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isValidApiKey</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(apiKey)) {</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">status</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">403</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">error</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">Invalid API Key</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleAuthorized</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthorized</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> private</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> boolean</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> isValidApiKey</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(String </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">key</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Implement your API key validation logic here</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> true</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="concrete-api-handler" tabindex="-1">Concrete API Handler <a class="header-anchor" href="#concrete-api-handler" aria-label="Permalink to "Concrete API Handler""></a></h3><p>Extend the abstract handler to process the request only if the API key is valid:</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">RouteInfo</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">endpoint</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "/data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">method</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> HttpMethod.GET)</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> GetDataHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> APIKeyProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> GetDataHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthorized</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">data</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">Your API response here</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h2 id="🏗️-chaining-hdis-for-modular-logic" tabindex="-1">🏗️ Chaining HDIs for Modular Logic <a class="header-anchor" href="#🏗️-chaining-hdis-for-modular-logic" aria-label="Permalink to "🏗️ Chaining HDIs for Modular Logic""></a></h2><p>HDIs can be layered to build complex flows. For instance, you might first authenticate a request, then fetch user data.</p><h3 id="protected-handler-authentication" tabindex="-1">Protected Handler (Authentication) <a class="header-anchor" href="#protected-handler-authentication" aria-label="Permalink to "Protected Handler (Authentication)""></a></h3><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ProtectedHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> RequestHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String authToken;</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handle</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> authToken </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> req.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">header</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"Authorization"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (authToken </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">==</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> ||</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> !</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isValidToken</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(authToken)) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">status</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">401</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">error</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">Unauthorized</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleAuthenticated</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthenticated</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> private</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> boolean</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> isValidToken</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(String </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">token</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Validate the token here</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> true</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="authenticated-handler-user-data-retrieval" tabindex="-1">Authenticated Handler (User Data Retrieval) <a class="header-anchor" href="#authenticated-handler-user-data-retrieval" aria-label="Permalink to "Authenticated Handler (User Data Retrieval)""></a></h3><p>Extend the <code>ProtectedHandler</code> to fetch user details:</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> AuthenticatedHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> User user;</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> AuthenticatedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthenticated</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> user </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> getUserFromDatabase</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(authToken);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (user </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">==</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">status</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">403</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">error</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">User not found</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleWithUser</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleWithUser</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="final-handler-implementation" tabindex="-1">Final Handler Implementation <a class="header-anchor" href="#final-handler-implementation" aria-label="Permalink to "Final Handler Implementation""></a></h3><p>Implement the final handler that uses the authenticated user data:</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">RouteInfo</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">endpoint</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "/profile"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">method</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> HttpMethod.GET)</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> UserProfileHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> AuthenticatedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> UserProfileHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleWithUser</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">username</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> user.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">getUsername</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">+</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><hr><p>For reference, here's a visual representation of how an HDI chain operates: <br></p><p><img src="`+h+'" alt="HDI Chain"></p>',35)]))}const y=i(l,[["render",p]]);export{c as __pageData,y as default};
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import{_ as i,c as a,a0 as n,o as t}from"./chunks/framework.p2VkXzrt.js";const e="/assets/hdi.CNuX0-qb.png",h="/assets/hdichain.FX-X2Mhu.png",c=JSON.parse('{"title":"⚡ Handler Default Implementations (HDI)","description":"","frontmatter":{"banner_title":"Flash - Handler Default Implementations","banner_description":"Leverage HDIs for cleaner and more maintainable route logic.","head":[["meta",{"name":"twitter:image","content":"/assets/banner-cards/flash-advanced-handler-default-implementations.png"}],["meta",{"name":"twitter:image:src","content":"https://docs.pixel-services.com/assets/banner-cards/flash-advanced-handler-default-implementations.png"}],["meta",{"name":"twitter:card","content":"summary_large_image"}],["meta",{"name":"twitter:image:height","content":"1280"}],["meta",{"name":"twitter:image:width","content":"669"}],["meta",{"name":"twitter:description","content":""}]]},"headers":[],"relativePath":"flash/advanced/handler-default-implementations.md","filePath":"flash/advanced/handler-default-implementations.md"}'),l={name:"flash/advanced/handler-default-implementations.md"};function p(k,s,r,d,E,o){return t(),a("div",null,s[0]||(s[0]=[n('<h1 id="⚡-handler-default-implementations-hdi" tabindex="-1">⚡ Handler Default Implementations (HDI) <a class="header-anchor" href="#⚡-handler-default-implementations-hdi" aria-label="Permalink to "⚡ Handler Default Implementations (HDI)""></a></h1><p>Handler Default Implementations (HDIs) offer a streamlined approach to standardize common behaviors across request handlers in Flash. By extending a base <code>RequestHandler</code> (or chaining multiple base handlers), you can centralize tasks like authentication, user data retrieval, and rate limiting while keeping your code modular and maintainable.</p><p>HDIs use the <a href="https://en.wikipedia.org/wiki/Chain-of-responsibility_pattern" target="_blank" rel="noreferrer">Chain of Responsibility pattern</a> to layer reusable logic, ensuring that shared functionality is defined once and inherited by all handlers.</p><p><img src="'+e+`" alt="HDI"></p><h2 id="🔗-how-hdis-work" tabindex="-1">🔗 How HDIs Work <a class="header-anchor" href="#🔗-how-hdis-work" aria-label="Permalink to "🔗 How HDIs Work""></a></h2><p>Rather than repeating common logic across different handlers, HDIs allow you to create <strong>abstract base handlers</strong> that encapsulate shared behaviors. When your individual request handlers extend these bases, they automatically inherit predefined functionality, and you only need to implement request-specific logic.</p><h3 id="key-benefits" tabindex="-1">Key Benefits <a class="header-anchor" href="#key-benefits" aria-label="Permalink to "Key Benefits""></a></h3><ul><li><p><strong>Build-Time Optimization:</strong><br> When your project is compiled, Flash’s router merges the entire HDI chain into a single handler instance. This eliminates extra function calls and runtime lookups, resulting in a leaner execution path compared to traditional middleware stacks.</p></li><li><p><strong>Reduced Complexity:</strong><br> Unlike frameworks that rely on reflection (e.g., Spring Boot) or a deep middleware stack (e.g., Express.js), HDIs embed inherited behavior directly in the compiled class, minimizing runtime overhead.</p></li><li><p><strong>Type Safety & Clean State Management:</strong><br> Protected fields in HDIs allow seamless data sharing between handlers without using global variables, callbacks, or type casting. Note: Always declare these fields as instance (non-static) variables to ensure each handler maintains its own state.</p></li></ul><h2 id="🛡️-hdi-design-guidelines" tabindex="-1">🛡️ HDI Design Guidelines <a class="header-anchor" href="#🛡️-hdi-design-guidelines" aria-label="Permalink to "🛡️ HDI Design Guidelines""></a></h2><h3 id="_1-base-hdi-class" tabindex="-1">1. Base HDI Class <a class="header-anchor" href="#_1-base-hdi-class" aria-label="Permalink to "1. Base HDI Class""></a></h3><p>Define an abstract base class that extends <code>RequestHandler</code> to encapsulate common logic:</p><ul><li><p><strong>Constructor:</strong><br> Initialize by passing <code>Request</code> and <code>Response</code> objects to the superclass.</p></li><li><p><strong>Overridden <code>handle</code> Method:</strong><br> Implement common logic and delegate to an abstract method for custom behavior.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handle</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Insert common logic here (e.g., logging, header processing)</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleCustom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li><li><p><strong>Abstract Method:</strong><br> Declare an abstract method that must be implemented by subclasses.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleCustom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span></code></pre></div></li><li><p><strong>Protected Fields:</strong><br> Use protected instance fields to share data between HDI layers.</p><blockquote><p><strong>Warning:</strong> Do <strong>not</strong> declare these fields as static. Each handler should manage its own state.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Incorrect: static field</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> static</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String data;</span></span>
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||||||
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<span class="line"></span>
|
||||||
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;">// Correct: instance field</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String data;</span></span></code></pre></div></blockquote></li></ul><h3 id="_2-concrete-handler-implementation" tabindex="-1">2. Concrete Handler Implementation <a class="header-anchor" href="#_2-concrete-handler-implementation" aria-label="Permalink to "2. Concrete Handler Implementation""></a></h3><p>Extend the base HDI class in your handler:</p><ul><li><p><strong>Constructor:</strong><br> Call the super constructor with the necessary <code>Request</code> and <code>Response</code> objects.</p></li><li><p><strong>Implement <code>handleCustom()</code>:</strong><br> Write the request-specific logic here. Protected fields from the base class are available within this method.</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleCustom</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Custom logic using inherited data</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "Response"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li></ul><h2 id="🛠️-example-api-key-authentication" tabindex="-1">🛠️ Example: API Key Authentication <a class="header-anchor" href="#🛠️-example-api-key-authentication" aria-label="Permalink to "🛠️ Example: API Key Authentication""></a></h2><p>This example demonstrates how to build an HDI that validates an API key before processing a request.</p><h3 id="abstract-api-key-protected-handler" tabindex="-1">Abstract API Key Protected Handler <a class="header-anchor" href="#abstract-api-key-protected-handler" aria-label="Permalink to "Abstract API Key Protected Handler""></a></h3><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> APIKeyProtectedHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> RequestHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String apiKey;</span></span>
|
||||||
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<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> APIKeyProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handle</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> apiKey </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> req.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">header</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"X-API-Key"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (apiKey </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">==</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> ||</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> !</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isValidApiKey</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(apiKey)) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">status</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">403</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">error</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">Invalid API Key</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleAuthorized</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthorized</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> private</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> boolean</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> isValidApiKey</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(String </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">key</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Implement your API key validation logic here</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> true</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="concrete-api-handler" tabindex="-1">Concrete API Handler <a class="header-anchor" href="#concrete-api-handler" aria-label="Permalink to "Concrete API Handler""></a></h3><p>Extend the abstract handler to process the request only if the API key is valid:</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">RouteInfo</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">endpoint</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "/data"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">method</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> HttpMethod.GET)</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> GetDataHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> APIKeyProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> GetDataHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthorized</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">data</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">Your API response here</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h2 id="🏗️-chaining-hdis-for-modular-logic" tabindex="-1">🏗️ Chaining HDIs for Modular Logic <a class="header-anchor" href="#🏗️-chaining-hdis-for-modular-logic" aria-label="Permalink to "🏗️ Chaining HDIs for Modular Logic""></a></h2><p>HDIs can be layered to build complex flows. For instance, you might first authenticate a request, then fetch user data.</p><h3 id="protected-handler-authentication" tabindex="-1">Protected Handler (Authentication) <a class="header-anchor" href="#protected-handler-authentication" aria-label="Permalink to "Protected Handler (Authentication)""></a></h3><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ProtectedHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> RequestHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> String authToken;</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handle</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> authToken </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> req.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">header</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"Authorization"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (authToken </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">==</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> ||</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> !</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">isValidToken</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(authToken)) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">status</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">401</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">error</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">Unauthorized</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleAuthenticated</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthenticated</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> private</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> boolean</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> isValidToken</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(String </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">token</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#6A737D;"> // Validate the token here</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> true</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="authenticated-handler-user-data-retrieval" tabindex="-1">Authenticated Handler (User Data Retrieval) <a class="header-anchor" href="#authenticated-handler-user-data-retrieval" aria-label="Permalink to "Authenticated Handler (User Data Retrieval)""></a></h3><p>Extend the <code>ProtectedHandler</code> to fetch user details:</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> AuthenticatedHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> ProtectedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> User user;</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> AuthenticatedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleAuthenticated</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> user </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">=</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> getUserFromDatabase</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(authToken);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> (user </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">==</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">status</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">403</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">error</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">User not found</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> handleWithUser</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
|
<span class="line"></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> abstract</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleWithUser</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
|
||||||
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="final-handler-implementation" tabindex="-1">Final Handler Implementation <a class="header-anchor" href="#final-handler-implementation" aria-label="Permalink to "Final Handler Implementation""></a></h3><p>Implement the final handler that uses the authenticated user data:</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">RouteInfo</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">endpoint</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "/profile"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">method</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> HttpMethod.GET)</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> UserProfileHandler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> AuthenticatedHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> public</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> UserProfileHandler</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(Request </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">req</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">, Response </span><span style="--shiki-light:#E36209;--shiki-dark:#FFAB70;">res</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">) {</span></span>
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<span class="line"><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;"> super</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(req, res);</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">Override</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> protected</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> Object </span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">handleWithUser</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() {</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> res.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">type</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"application/json"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">);</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "{</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">username</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">:</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">"</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> user.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">getUsername</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">() </span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;">+</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "</span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">\\"</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">}"</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">;</span></span>
|
||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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||||||
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><hr><p>For reference, here's a visual representation of how an HDI chain operates: <br></p><p><img src="`+h+'" alt="HDI Chain"></p>',35)]))}const y=i(l,[["render",p]]);export{c as __pageData,y as default};
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> server.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> server.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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||||||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="🚀-package-and-deploy-your-app" tabindex="-1">🚀 Package and Deploy your app! <a class="header-anchor" href="#🚀-package-and-deploy-your-app" aria-label="Permalink to "🚀 Package and Deploy your app!""></a></h3><p>With the frontend and backend code in place, you can now build the JAR file and deploy it to your server. The JAR file will contain both the frontend and backend code, making it easy to deploy and run your fullstack application.</p><p>All you've left to do is run the jarfile on any machine that has Java installed, and your fullstack application will be up and running!</p></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/advanced/handler-default-implementations.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Handler Default Implementations</span><!--]--></a></div><div class="pager" data-v-1bcd8184><!----></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h3 id="🚀-package-and-deploy-your-app" tabindex="-1">🚀 Package and Deploy your app! <a class="header-anchor" href="#🚀-package-and-deploy-your-app" aria-label="Permalink to "🚀 Package and Deploy your app!""></a></h3><p>With the frontend and backend code in place, you can now build the JAR file and deploy it to your server. The JAR file will contain both the frontend and backend code, making it easy to deploy and run your fullstack application.</p><p>All you've left to do is run the jarfile on any machine that has Java installed, and your fullstack application will be up and running!</p></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/advanced/handler-default-implementations.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Handler Default Implementations</span><!--]--></a></div><div class="pager" data-v-1bcd8184><!----></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"ki9D2CCK\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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||||||
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|
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> response;</span></span>
|
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> response;</span></span>
|
||||||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
|
||||||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="warning custom-block"><p class="custom-block-title">WARNING</p><p>Any logic that needs to be executed before the request handler is registered must be done within the constructor.</p></div><h2 id="request-handler-methods" tabindex="-1">Request Handler methods <a class="header-anchor" href="#request-handler-methods" aria-label="Permalink to "Request Handler methods""></a></h2><p>The <code>RequestHandler</code> class provides several methods that can be used to interact with the request and response objects easily and safely. Following are listed the methods available in the <code>RequestHandler</code> class, with a brief description of their purpose:</p><table tabindex="0"><thead><tr><th>Method</th><th>Params</th><th>Description</th></tr></thead><tbody><tr><td><code>getRequestBody()</code></td><td><code>none</code></td><td>Returns a <code>JSONObject</code> representation of the request body.</td></tr><tr><td><code>getSpecification()</code></td><td><code>none</code></td><td>Returns an instance of <code>HandlerSpecification</code> containing all sorts of information about the handler.</td></tr><tr><td><code>expectedRequestParameter()</code></td><td><code>String name, description</code></td><td>Returns an instance of <code>ExpectedRequestParameter</code> for the specified parameter name.</td></tr><tr><td><code>expectedBodyField()</code></td><td><code>String name, description</code></td><td>Returns an instance of <code>ExpectedBodyField</code> for the specified field name.</td></tr><tr><td><code>expectedBodyFile()</code></td><td><code>String name, description</code></td><td>Returns an instance of <code>ExpectedBodyFile</code> for the specified file name.</td></tr></tbody></table><p>(More on the <code>ExpectedRequestParameter</code>, <code>ExpectedBodyField</code>, and <code>ExpectedBodyFile</code> classes in the next section).</p></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/handlers.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Handlers</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/request-response.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Request and Response</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><div class="warning custom-block"><p class="custom-block-title">WARNING</p><p>Any logic that needs to be executed before the request handler is registered must be done within the constructor.</p></div><h2 id="request-handler-methods" tabindex="-1">Request Handler methods <a class="header-anchor" href="#request-handler-methods" aria-label="Permalink to "Request Handler methods""></a></h2><p>The <code>RequestHandler</code> class provides several methods that can be used to interact with the request and response objects easily and safely. Following are listed the methods available in the <code>RequestHandler</code> class, with a brief description of their purpose:</p><table tabindex="0"><thead><tr><th>Method</th><th>Params</th><th>Description</th></tr></thead><tbody><tr><td><code>getRequestBody()</code></td><td><code>none</code></td><td>Returns a <code>JSONObject</code> representation of the request body.</td></tr><tr><td><code>getSpecification()</code></td><td><code>none</code></td><td>Returns an instance of <code>HandlerSpecification</code> containing all sorts of information about the handler.</td></tr><tr><td><code>expectedRequestParameter()</code></td><td><code>String name, description</code></td><td>Returns an instance of <code>ExpectedRequestParameter</code> for the specified parameter name.</td></tr><tr><td><code>expectedBodyField()</code></td><td><code>String name, description</code></td><td>Returns an instance of <code>ExpectedBodyField</code> for the specified field name.</td></tr><tr><td><code>expectedBodyFile()</code></td><td><code>String name, description</code></td><td>Returns an instance of <code>ExpectedBodyFile</code> for the specified file name.</td></tr></tbody></table><p>(More on the <code>ExpectedRequestParameter</code>, <code>ExpectedBodyField</code>, and <code>ExpectedBodyFile</code> classes in the next section).</p></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/handlers.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Handlers</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/request-response.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Request and Response</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"ki9D2CCK\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"CRxyEpV6\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<span class="line highlighted"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "File saved at: "</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> myFile.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">getAbsolutePath</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line highlighted"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;"> "File saved at: "</span><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> myFile.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">getAbsolutePath</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><p>This time, you will need to use a tool like <code>Postman</code> to send a POST request to <code>/helloFile</code> with a multipart form data body containing a file named <code>myFile</code>. You should receive a response like <code>File saved at: <path></code> where <code><path></code> is the location where the server saved the file.</p></details></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/request-handler.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>RequestHandler</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/server-router.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Server Router</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><p>This time, you will need to use a tool like <code>Postman</code> to send a POST request to <code>/helloFile</code> with a multipart form data body containing a file named <code>myFile</code>. You should receive a response like <code>File saved at: <path></code> where <code><path></code> is the location where the server saved the file.</p></details></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/request-handler.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>RequestHandler</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/server-router.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Server Router</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"ki9D2CCK\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"CRxyEpV6\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> response;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F97583;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> response;</span></span>
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||||||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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||||||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><p>In the example above, we create an <code>/api</code> router and register the <code>MyHandler</code> class to handle requests on the <code>/api/hello</code> endpoint.</p><p>This is because the <code>path</code> property of the <code>RouteInfo</code> annotation is relative to the base path of the router, which in this case is <code>/api</code>.</p><p>Visiting <code>/api/hello</code> from your browser will result in the response <code>Hello, world!</code>.</p></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/request-response.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Request and Response</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/websockets.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Websockets</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><p>In the example above, we create an <code>/api</code> router and register the <code>MyHandler</code> class to handle requests on the <code>/api/hello</code> endpoint.</p><p>This is because the <code>path</code> property of the <code>RouteInfo</code> annotation is relative to the base path of the router, which in this case is <code>/api</code>.</p><p>Visiting <code>/api/hello</code> from your browser will result in the response <code>Hello, world!</code>.</p></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/request-response.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Request and Response</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/websockets.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Websockets</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> server.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> server.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">();</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h2 id="interacting-with-websockets-sessions" tabindex="-1">Interacting with Websockets sessions <a class="header-anchor" href="#interacting-with-websockets-sessions" aria-label="Permalink to "Interacting with Websockets sessions""></a></h2><p>The <code>WebSocketSession</code> object provides methods to interact with the Websocket session, such as sending messages, closing the connection, and getting the remote address and session ID.</p><table tabindex="0"><thead><tr><th>Method</th><th>Params</th><th>Description</th></tr></thead><tbody><tr><td><code>getChannel()</code></td><td><code>none</code></td><td>Returns an instance of <code>AsynchronousSocketChannel</code> useful for retrieving info about the client .</td></tr><tr><td><code>getRequestInfo()</code></td><td><code>none</code></td><td>Returns an instance of <code>RequestInfo</code> containing all sorts of information about the request (headers, method, path etc.) .</td></tr><tr><td><code>getPath()</code></td><td><code>none</code></td><td>Returns the path to the websocket endpoint as a <code>String</code>.</td></tr><tr><td><code>getId()</code></td><td><code>none</code></td><td>Returns the id of the websocket session as a <code>String</code>, useful if you want to keep track of the connected clients in a custom manager.</td></tr><tr><td><code>getBuffer()</code></td><td><code>none</code></td><td>Returns the ByteBuffer for that session.</td></tr><tr><td><code>sendMessage()</code></td><td><code>String message</code></td><td>Sends the <code>message</code> to the client as a <code>String</code>. it's up to the developer to stringify and de-stringify any data you want to send back and forth</td></tr><tr><td><code>close()</code></td><td><code>none</code></td><td>Closes the websocket session.</td></tr></tbody></table><div class="warning custom-block"><p class="custom-block-title">NOTE</p><p><code>WebsocketHandler</code> includes a <code>setId(String id)</code> method for overriding the default session ID. Unless you have a specific reason to change it, it's best to leave it as is.</p><p>Similarly, the <code>setBuffer(ByteBuffer buffer)</code> method allows you to override the default buffer. If you're unsure about this, it's recommended to keep the default setting.</p></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/server-router.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Server Router</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/file-serving/static-file-server.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Static Files Server</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div><h2 id="interacting-with-websockets-sessions" tabindex="-1">Interacting with Websockets sessions <a class="header-anchor" href="#interacting-with-websockets-sessions" aria-label="Permalink to "Interacting with Websockets sessions""></a></h2><p>The <code>WebSocketSession</code> object provides methods to interact with the Websocket session, such as sending messages, closing the connection, and getting the remote address and session ID.</p><table tabindex="0"><thead><tr><th>Method</th><th>Params</th><th>Description</th></tr></thead><tbody><tr><td><code>getChannel()</code></td><td><code>none</code></td><td>Returns an instance of <code>AsynchronousSocketChannel</code> useful for retrieving info about the client .</td></tr><tr><td><code>getRequestInfo()</code></td><td><code>none</code></td><td>Returns an instance of <code>RequestInfo</code> containing all sorts of information about the request (headers, method, path etc.) .</td></tr><tr><td><code>getPath()</code></td><td><code>none</code></td><td>Returns the path to the websocket endpoint as a <code>String</code>.</td></tr><tr><td><code>getId()</code></td><td><code>none</code></td><td>Returns the id of the websocket session as a <code>String</code>, useful if you want to keep track of the connected clients in a custom manager.</td></tr><tr><td><code>getBuffer()</code></td><td><code>none</code></td><td>Returns the ByteBuffer for that session.</td></tr><tr><td><code>sendMessage()</code></td><td><code>String message</code></td><td>Sends the <code>message</code> to the client as a <code>String</code>. it's up to the developer to stringify and de-stringify any data you want to send back and forth</td></tr><tr><td><code>close()</code></td><td><code>none</code></td><td>Closes the websocket session.</td></tr></tbody></table><div class="warning custom-block"><p class="custom-block-title">NOTE</p><p><code>WebsocketHandler</code> includes a <code>setId(String id)</code> method for overriding the default session ID. Unless you have a specific reason to change it, it's best to leave it as is.</p><p>Similarly, the <code>setBuffer(ByteBuffer buffer)</code> method allows you to override the default buffer. If you're unsure about this, it's recommended to keep the default setting.</p></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/server-router.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Server Router</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/file-serving/static-file-server.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Static Files Server</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"ki9D2CCK\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"CRxyEpV6\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> ));</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> ));</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/file-serving/static-file-server.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Static Files Server</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/advanced/handler-default-implementations.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Handler Default Implementations</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/file-serving/static-file-server.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Static Files Server</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/advanced/handler-default-implementations.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Handler Default Implementations</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> ));</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> ));</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/websockets.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Websockets</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/file-serving/dynamic-file-server.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Dynamic Files Server</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash/core-concepts/websockets.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Websockets</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/file-serving/dynamic-file-server.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Dynamic Files Server</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"ki9D2CCK\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<script>window.__VP_HASH_MAP__=JSON.parse("{\"flash_advanced_fullstack-development.md\":\"DFJ2Nfm_\",\"flash_advanced_handler-default-implementations.md\":\"CRxyEpV6\",\"flash_core-concepts_handlers.md\":\"BZuBmBSX\",\"flash_core-concepts_request-handler.md\":\"fjZWLpOw\",\"flash_core-concepts_request-response.md\":\"BuTSfkDO\",\"flash_core-concepts_server-router.md\":\"DIWo49Yl\",\"flash_core-concepts_websockets.md\":\"ByGVX96c\",\"flash_file-serving_dynamic-file-server.md\":\"DY_r4ecH\",\"flash_file-serving_static-file-server.md\":\"BvN0FZB2\",\"flash_index.md\":\"CAxgiNVz\",\"flash_introduction_installation.md\":\"BEOKwAAp\",\"index.md\":\"sDYgKdFh\",\"mobot_index.md\":\"Be0Zoetq\",\"serverlibraries_index.md\":\"CeIqSPIs\"}");window.__VP_SITE_DATA__=JSON.parse("{\"lang\":\"en-US\",\"dir\":\"ltr\",\"title\":\"Pixel Services Docs\",\"description\":\"Documentation for all public Pixel Services projects.\",\"base\":\"/\",\"head\":[],\"router\":{\"prefetchLinks\":true},\"appearance\":true,\"themeConfig\":{\"logo\":\"https://static.pixel-services.com/static/assets/pservices_logo.png\",\"sidebar\":{\"/flash/\":[{\"text\":\"Introduction\",\"collapsed\":false,\"items\":[{\"text\":\"Getting Started\",\"link\":\"/flash\"},{\"text\":\"Installation\",\"link\":\"/flash/introduction/installation\"}]},{\"text\":\"Core Concepts\",\"collapsed\":false,\"items\":[{\"text\":\"Handlers\",\"link\":\"/flash/core-concepts/handlers\"},{\"text\":\"RequestHandler\",\"link\":\"/flash/core-concepts/request-handler\"},{\"text\":\"Request and Response\",\"link\":\"/flash/core-concepts/request-response\"},{\"text\":\"Server Router\",\"link\":\"/flash/core-concepts/server-router\"},{\"text\":\"Websockets\",\"link\":\"/flash/core-concepts/websockets\"}]},{\"text\":\"File Serving\",\"collapsed\":false,\"items\":[{\"text\":\"Static Files Server\",\"link\":\"/flash/file-serving/static-file-server\"},{\"text\":\"Dynamic Files Server\",\"link\":\"/flash/file-serving/dynamic-file-server\"}]},{\"text\":\"Advanced\",\"collapsed\":false,\"items\":[{\"text\":\"Handler Default Implementations\",\"link\":\"/flash/advanced/handler-default-implementations\"},{\"text\":\"Fullstack Development\",\"link\":\"/flash/advanced/fullstack-development\"}]}],\"/mobot/\":[{\"text\":\"MoBot Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/mobot\"}]}],\"/serverlibraries/\":[{\"text\":\"ServerLibraries Documentation\",\"items\":[{\"text\":\"Getting Started\",\"link\":\"/serverlibraries\"}]}]}},\"locales\":{},\"scrollOffset\":134,\"cleanUrls\":false}");</script>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li><li><p>And the dependency :</p><div class="language-groovy vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">groovy</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">dependencies {</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li><li><p>And the dependency :</p><div class="language-groovy vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">groovy</span><pre class="shiki shiki-themes github-light github-dark vp-code" tabindex="0"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">dependencies {</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> implementation </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">'com.pixelservices:flash:{{ latestVersion }}'</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> implementation </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">'com.pixelservices:flash:{{ latestVersion }}'</span></span>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li></ol><div> ⚡ Latest version: <a href="https://maven.pixel-services.com/#/releases/com/pixelservices/flash" style="text-decoration:underline;color:#007bff;"><strong></strong></a></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Getting Started</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/handlers.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Handlers</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}</span></span></code></pre></div></li></ol><div> ⚡ Latest version: <a href="https://maven.pixel-services.com/#/releases/com/pixelservices/flash" style="text-decoration:underline;color:#007bff;"><strong></strong></a></div></div></div></main><footer class="VPDocFooter" data-v-e6f2a212 data-v-1bcd8184><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-1bcd8184><span class="visually-hidden" id="doc-footer-aria-label" data-v-1bcd8184>Pager</span><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link prev" href="/flash.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Previous page</span><span class="title" data-v-1bcd8184>Getting Started</span><!--]--></a></div><div class="pager" data-v-1bcd8184><a class="VPLink link pager-link next" href="/flash/core-concepts/handlers.html" data-v-1bcd8184><!--[--><span class="desc" data-v-1bcd8184>Next page</span><span class="title" data-v-1bcd8184>Handlers</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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{"flash_advanced_fullstack-development.md":"DFJ2Nfm_","flash_advanced_handler-default-implementations.md":"CRxyEpV6","flash_core-concepts_handlers.md":"BZuBmBSX","flash_core-concepts_request-handler.md":"fjZWLpOw","flash_core-concepts_request-response.md":"BuTSfkDO","flash_core-concepts_server-router.md":"DIWo49Yl","flash_core-concepts_websockets.md":"ByGVX96c","flash_file-serving_dynamic-file-server.md":"DY_r4ecH","flash_file-serving_static-file-server.md":"BvN0FZB2","flash_index.md":"CAxgiNVz","flash_introduction_installation.md":"BEOKwAAp","index.md":"sDYgKdFh","mobot_index.md":"Be0Zoetq","serverlibraries_index.md":"CeIqSPIs"}
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