Logging support for server

R=devoncarew@google.com, scheglov@google.com

Review URL: https://codereview.chromium.org//136333008

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@31926 260f80e4-7a28-3924-810f-c04153c831b5

pkg/analysis_server/LICENSE

@@ -1,4 +1,4 @@
-Copyright 2013, the Dart project authors. All rights reserved.
+Copyright 2014, the Dart project authors. All rights reserved.
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:

pkg/analysis_server/lib/src/analysis_logger.dart

@@ -0,0 +1,44 @@
+// 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 analysis.logger;
+
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:logging/logging.dart' as logging;
+
+/**
+ * Instances of the class [AnalysisLogger] translate from the analysis engine's
+ * API to the logging package's API.
+ */
+class AnalysisLogger implements Logger {
+  /**
+   * The underlying logger that is being wrapped.
+   */
+  final logging.Logger baseLogger = new logging.Logger('analysis.server');
+
+  @override
+  void logError(String message) {
+    baseLogger.severe(message);
+  }
+
+  @override
+  void logError2(String message, Exception exception) {
+    baseLogger.severe(message, exception);
+  }
+
+  @override
+  void logError3(Exception exception) {
+    baseLogger.severe("Exception", exception);
+  }
+
+  @override
+  void logInformation(String message) {
+    baseLogger.info(message);
+  }
+
+  @override
+  void logInformation2(String message, Exception exception) {
+    baseLogger.info(message, exception);
+  }
+}