Swap plain text format logs to json with skip of connection logs

Swap plain text format logs to json with skip of connection logs

Author: nwdles

exporter/Dockerfile

@@ -20,5 +20,5 @@ RUN composer install --no-dev --prefer-dist --no-interaction --optimize-autoload
 
 COPY ./ ./
 
-CMD ["php", "-S", "0.0.0.0:8000", "-t", "public"]
+CMD ["/bin/ash", "-o", "pipefail", "-c", "php -S 0.0.0.0:8000 -t public 2>&1 | php /exporter/log-formatter.php"]
 

exporter/log-formatter.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+ob_implicit_flush(true);
+
+while (($line = fgets(STDIN)) !== false) {
+    $line = rtrim($line, "\r\n");
+    if ($line === '') {
+        continue;
+    }
+
+    // [Day Mon DD HH:MM:SS YYYY] ip:port [status]: METHOD /path
+    if (preg_match('/^\[([^\]]+)\] (\S+?):\d+ \[(\d+)\]: (\w+) (\S+)/', $line, $m)) {
+        echo json_encode([
+            'time_local'  => $m[1],
+            'remote_addr' => $m[2],
+            'status'      => $m[3],
+            'request'     => $m[4] . ' ' . $m[5],
+        ], JSON_UNESCAPED_SLASHES | JSON_INVALID_UTF8_SUBSTITUTE) . "\n";
+        continue;
+    }
+
+    // Skip connection-level noise: Accepted / Closing
+    if (preg_match('/\b(?:Accepted|Closing)\b/', $line)) {
+        continue;
+    }
+
+    // Fallback for unexpected lines (e.g. PHP errors)
+    echo json_encode([
+        'time_local' => date('D M j H:i:s Y'),
+        'message'    => $line,
+    ], JSON_UNESCAPED_SLASHES | JSON_INVALID_UTF8_SUBSTITUTE) . "\n";
+}