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| 1 | +// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| 2 | +// for details. All rights reserved. Use of this source code is governed by a |
| 3 | +// BSD-style license that can be found in the LICENSE file. |
| 4 | + |
| 5 | +library appengine.api.logging; |
| 6 | + |
| 7 | +import 'dart:async'; |
| 8 | + |
| 9 | +import 'package:gcloud/service_scope.dart' as ss; |
| 10 | + |
| 11 | +class LogLevel { |
| 12 | + static const LogLevel CRITICAL = const LogLevel._('Critical', 4); |
| 13 | + static const LogLevel ERROR = const LogLevel._('Error', 3); |
| 14 | + static const LogLevel WARNING = const LogLevel._('Warning', 2); |
| 15 | + static const LogLevel INFO = const LogLevel._('Info', 1); |
| 16 | + static const LogLevel DEBUG = const LogLevel._('Debug', 0); |
| 17 | + |
| 18 | + final String name; |
| 19 | + final int level; |
| 20 | + |
| 21 | + const LogLevel._(this.name, this.level); |
| 22 | + |
| 23 | + String toString() => name; |
| 24 | +} |
| 25 | + |
| 26 | +abstract class Logging { |
| 27 | + void critical(String string, {DateTime timestamp}) { |
| 28 | + log(LogLevel.CRITICAL, string, timestamp: timestamp); |
| 29 | + } |
| 30 | + |
| 31 | + void error(String string, {DateTime timestamp}) { |
| 32 | + log(LogLevel.ERROR, string, timestamp: timestamp); |
| 33 | + } |
| 34 | + |
| 35 | + void warning(String string, {DateTime timestamp}) { |
| 36 | + log(LogLevel.WARNING, string, timestamp: timestamp); |
| 37 | + } |
| 38 | + |
| 39 | + void info(String string, {DateTime timestamp}) { |
| 40 | + log(LogLevel.INFO, string, timestamp: timestamp); |
| 41 | + } |
| 42 | + |
| 43 | + void debug(String string, {DateTime timestamp}) { |
| 44 | + log(LogLevel.DEBUG, string, timestamp: timestamp); |
| 45 | + } |
| 46 | + |
| 47 | + void log(LogLevel level, String message, {DateTime timestamp}); |
| 48 | + |
| 49 | + Future flush(); |
| 50 | +} |
| 51 | + |
| 52 | +/** |
| 53 | + * Register a new [Logging] object. |
| 54 | + * |
| 55 | + * Calling this outside of a service scope or calling it more than once inside |
| 56 | + * the same service scope will result in an error. |
| 57 | + * |
| 58 | + * See the `package:gcloud/service_scope.dart` library for more information. |
| 59 | + */ |
| 60 | +void registerLoggingService(Logging service) { |
| 61 | + ss.register(#_appengine.logging, service); |
| 62 | +} |
| 63 | + |
| 64 | +/** |
| 65 | + * The logging service. |
| 66 | + * |
| 67 | + * Request handlers will be run inside a service scope which contains the |
| 68 | + * modules service. |
| 69 | + */ |
| 70 | +Logging get loggingService => ss.lookup(#_appengine.logging); |
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