refactored, pre-buffer reuse

2026-03-15 14:31:52 +01:00
parent f1beb160aa
commit b0d606cb5f
64 changed files with 888 additions and 400 deletions
@@ -0,0 +1,78 @@
+package dev.relism.http;
+
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Pre-compiled byte representations of standard HTTP status lines.
+ * Uses a direct-access array for O(1) lookup with zero allocation.
+ */
+public enum HttpStatus {
+
+    // 1xx
+    CONTINUE                        (100, "Continue"),
+    SWITCHING_PROTOCOLS             (101, "Switching Protocols"),
+
+    // 2xx
+    OK                              (200, "OK"),
+    CREATED                         (201, "Created"),
+    ACCEPTED                        (202, "Accepted"),
+    NO_CONTENT                      (204, "No Content"),
+    PARTIAL_CONTENT                 (206, "Partial Content"),
+
+    // 3xx
+    MOVED_PERMANENTLY               (301, "Moved Permanently"),
+    FOUND                           (302, "Found"),
+    NOT_MODIFIED                    (304, "Not Modified"),
+    TEMPORARY_REDIRECT              (307, "Temporary Redirect"),
+    PERMANENT_REDIRECT              (308, "Permanent Redirect"),
+
+    // 4xx
+    BAD_REQUEST                     (400, "Bad Request"),
+    UNAUTHORIZED                    (401, "Unauthorized"),
+    FORBIDDEN                       (403, "Forbidden"),
+    NOT_FOUND                       (404, "Not Found"),
+    METHOD_NOT_ALLOWED              (405, "Method Not Allowed"),
+    NOT_ACCEPTABLE                  (406, "Not Acceptable"),
+    CONFLICT                        (409, "Conflict"),
+    GONE                            (410, "Gone"),
+    LENGTH_REQUIRED                 (411, "Length Required"),
+    PAYLOAD_TOO_LARGE               (413, "Payload Too Large"),
+    URI_TOO_LONG                    (414, "URI Too Long"),
+    UNSUPPORTED_MEDIA_TYPE          (415, "Unsupported Media Type"),
+    UNPROCESSABLE_ENTITY            (422, "Unprocessable Entity"),
+    TOO_MANY_REQUESTS               (429, "Too Many Requests"),
+
+    // 5xx
+    INTERNAL_SERVER_ERROR           (500, "Internal Server Error"),
+    NOT_IMPLEMENTED                 (501, "Not Implemented"),
+    BAD_GATEWAY                     (502, "Bad Gateway"),
+    SERVICE_UNAVAILABLE             (503, "Service Unavailable"),
+    GATEWAY_TIMEOUT                 (504, "Gateway Timeout");
+
+    private static final int MAX_STATUS_CODE = 504;
+    private static final byte[][] INDEX = new byte[MAX_STATUS_CODE + 1][];
+
+    static {
+        for (HttpStatus s : values()) {
+            INDEX[s.code] = s.bytes;
+        }
+    }
+
+    private final int code;
+    private final byte[] bytes;
+
+    HttpStatus(int code, String reason) {
+        this.code  = code;
+        this.bytes = (code + " " + reason).getBytes(StandardCharsets.UTF_8);
+    }
+
+    /** * Returns pre-compiled status bytes for the given code.
+     * Access is O(1) and generates zero garbage.
+     */
+    public static byte[] bytesForCode(int code) {
+        if (code >= 0 && code <= MAX_STATUS_CODE) {
+            return INDEX[code];
+        }
+        return null;
+    }
+}