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Unified Diff: mojo/public/dart/third_party/shelf/lib/src/handlers/logger.dart

Issue 1346773002: Stop running pub get at gclient sync time and fix build bugs (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 3 months ago
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Index: mojo/public/dart/third_party/shelf/lib/src/handlers/logger.dart
diff --git a/mojo/public/dart/third_party/shelf/lib/src/handlers/logger.dart b/mojo/public/dart/third_party/shelf/lib/src/handlers/logger.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a4fbc65872a6ca2a7fc6ac307bc6626a5ed78f3d
--- /dev/null
+++ b/mojo/public/dart/third_party/shelf/lib/src/handlers/logger.dart
@@ -0,0 +1,85 @@
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library shelf.handlers.logger;
+
+import 'dart:async';
+
+import 'package:stack_trace/stack_trace.dart';
+
+import '../hijack_exception.dart';
+import '../middleware.dart';
+
+/// Middleware which prints the time of the request, the elapsed time for the
+/// inner handlers, the response's status code and the request URI.
+///
+/// [logger] takes two parameters.
+///
+/// `msg` includes the request time, duration, request method, and requested
+/// path.
+///
+/// For successful requests, `msg` also includes the status code.
+///
+/// When an error is thrown, `isError` is true and `msg` contains the error
+/// description and stack trace.
+Middleware logRequests({void logger(String msg, bool isError)}) =>
+ (innerHandler) {
+ if (logger == null) logger = _defaultLogger;
+
+ return (request) {
+ var startTime = new DateTime.now();
+ var watch = new Stopwatch()..start();
+
+ return new Future.sync(() => innerHandler(request)).then((response) {
+ var msg = _getMessage(startTime, response.statusCode,
+ request.requestedUri, request.method, watch.elapsed);
+
+ logger(msg, false);
+
+ return response;
+ }, onError: (error, stackTrace) {
+ if (error is HijackException) throw error;
+
+ var msg = _getErrorMessage(startTime, request.requestedUri,
+ request.method, watch.elapsed, error, stackTrace);
+
+ logger(msg, true);
+
+ throw error;
+ });
+ };
+};
+
+String _formatQuery(String query) {
+ return query == '' ? '' : '?$query';
+}
+
+String _getMessage(DateTime requestTime, int statusCode, Uri requestedUri,
+ String method, Duration elapsedTime) {
+ return '${requestTime}\t$elapsedTime\t$method\t[${statusCode}]\t'
+ '${requestedUri.path}${_formatQuery(requestedUri.query)}';
+}
+
+String _getErrorMessage(DateTime requestTime, Uri requestedUri, String method,
+ Duration elapsedTime, Object error, StackTrace stack) {
+ var chain = new Chain.current();
+ if (stack != null) {
+ chain = new Chain.forTrace(stack)
+ .foldFrames((frame) => frame.isCore || frame.package == 'shelf').terse;
+ }
+
+ var msg = '${requestTime}\t$elapsedTime\t$method\t${requestedUri.path}'
+ '${_formatQuery(requestedUri.query)}\n$error';
+ if (chain == null) return msg;
+
+ return '$msg\n$chain';
+}
+
+void _defaultLogger(String msg, bool isError) {
+ if (isError) {
+ print('[ERROR] $msg');
+ } else {
+ print(msg);
+ }
+}

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