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| 1 | +#region Copyright notice and license |
| 2 | + |
| 3 | +// Copyright 2019 The gRPC Authors |
| 4 | +// |
| 5 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | +// you may not use this file except in compliance with the License. |
| 7 | +// You may obtain a copy of the License at |
| 8 | +// |
| 9 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | +// |
| 11 | +// Unless required by applicable law or agreed to in writing, software |
| 12 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | +// See the License for the specific language governing permissions and |
| 15 | +// limitations under the License. |
| 16 | + |
| 17 | +#endregion |
| 18 | + |
| 19 | +using System.Diagnostics.Tracing; |
| 20 | +using System.Runtime.CompilerServices; |
| 21 | +using System.Threading; |
| 22 | +using Grpc.Core; |
| 23 | + |
| 24 | +namespace Grpc.AspNetCore.Server.Internal |
| 25 | +{ |
| 26 | + internal class GrpcEventSource : EventSource |
| 27 | + { |
| 28 | + public static readonly GrpcEventSource Log = new GrpcEventSource(); |
| 29 | + |
| 30 | + private PollingCounter? _totalCallsCounter; |
| 31 | + private PollingCounter? _currentCallsCounter; |
| 32 | + private PollingCounter? _messagesSentCounter; |
| 33 | + private PollingCounter? _messagesReceivedCounter; |
| 34 | + private PollingCounter? _callsFailedCounter; |
| 35 | + private PollingCounter? _callsDeadlineExceededCounter; |
| 36 | + private PollingCounter? _callsUnimplementedCounter; |
| 37 | + |
| 38 | + private long _totalCalls; |
| 39 | + private long _currentCalls; |
| 40 | + private long _messageSent; |
| 41 | + private long _messageReceived; |
| 42 | + private long _callsFailed; |
| 43 | + private long _callsDeadlineExceeded; |
| 44 | + private long _callsUnimplemented; |
| 45 | + |
| 46 | + internal GrpcEventSource() |
| 47 | + : base("Grpc.AspNetCore.Server") |
| 48 | + { |
| 49 | + } |
| 50 | + |
| 51 | + // Used for testing |
| 52 | + internal GrpcEventSource(string eventSourceName) |
| 53 | + : base(eventSourceName) |
| 54 | + { |
| 55 | + } |
| 56 | + |
| 57 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 58 | + [Event(eventId: 1, Level = EventLevel.Verbose)] |
| 59 | + public void CallStart(string method) |
| 60 | + { |
| 61 | + Interlocked.Increment(ref _totalCalls); |
| 62 | + Interlocked.Increment(ref _currentCalls); |
| 63 | + |
| 64 | + WriteEvent(1, method); |
| 65 | + } |
| 66 | + |
| 67 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 68 | + [Event(eventId: 2, Level = EventLevel.Verbose)] |
| 69 | + public void CallStop() |
| 70 | + { |
| 71 | + Interlocked.Decrement(ref _currentCalls); |
| 72 | + |
| 73 | + WriteEvent(2); |
| 74 | + } |
| 75 | + |
| 76 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 77 | + [Event(eventId: 3, Level = EventLevel.Error)] |
| 78 | + public void CallFailed(StatusCode statusCode) |
| 79 | + { |
| 80 | + Interlocked.Increment(ref _callsFailed); |
| 81 | + |
| 82 | + WriteEvent(3, (int)statusCode); |
| 83 | + } |
| 84 | + |
| 85 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 86 | + [Event(eventId: 4, Level = EventLevel.Error)] |
| 87 | + public void CallDeadlineExceeded() |
| 88 | + { |
| 89 | + Interlocked.Increment(ref _callsDeadlineExceeded); |
| 90 | + |
| 91 | + WriteEvent(4); |
| 92 | + } |
| 93 | + |
| 94 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 95 | + [Event(eventId: 5, Level = EventLevel.Verbose)] |
| 96 | + public void MessageSent() |
| 97 | + { |
| 98 | + Interlocked.Increment(ref _messageSent); |
| 99 | + |
| 100 | + WriteEvent(5); |
| 101 | + } |
| 102 | + |
| 103 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 104 | + [Event(eventId: 6, Level = EventLevel.Verbose)] |
| 105 | + public void MessageReceived() |
| 106 | + { |
| 107 | + Interlocked.Increment(ref _messageReceived); |
| 108 | + |
| 109 | + WriteEvent(6); |
| 110 | + } |
| 111 | + |
| 112 | + [MethodImpl(MethodImplOptions.NoInlining)] |
| 113 | + [Event(eventId: 7, Level = EventLevel.Verbose)] |
| 114 | + public void CallUnimplemented(string method) |
| 115 | + { |
| 116 | + Interlocked.Increment(ref _callsUnimplemented); |
| 117 | + |
| 118 | + WriteEvent(7, method); |
| 119 | + } |
| 120 | + |
| 121 | + protected override void OnEventCommand(EventCommandEventArgs command) |
| 122 | + { |
| 123 | + if (command.Command == EventCommand.Enable) |
| 124 | + { |
| 125 | + // This is the convention for initializing counters in the RuntimeEventSource (lazily on the first enable command). |
| 126 | + // They aren't disabled afterwards... |
| 127 | + |
| 128 | + _totalCallsCounter ??= new PollingCounter("total-calls", this, () => _totalCalls) |
| 129 | + { |
| 130 | + DisplayName = "Total Calls", |
| 131 | + }; |
| 132 | + _currentCallsCounter ??= new PollingCounter("current-calls", this, () => _currentCalls) |
| 133 | + { |
| 134 | + DisplayName = "Current Calls" |
| 135 | + }; |
| 136 | + _callsFailedCounter ??= new PollingCounter("calls-failed", this, () => _callsFailed) |
| 137 | + { |
| 138 | + DisplayName = "Total Calls Failed", |
| 139 | + }; |
| 140 | + _callsDeadlineExceededCounter ??= new PollingCounter("calls-deadline-exceeded", this, () => _callsDeadlineExceeded) |
| 141 | + { |
| 142 | + DisplayName = "Total Calls Deadline Exceeded", |
| 143 | + }; |
| 144 | + _messagesSentCounter ??= new PollingCounter("messages-sent", this, () => _messageSent) |
| 145 | + { |
| 146 | + DisplayName = "Total Messages Sent", |
| 147 | + }; |
| 148 | + _messagesReceivedCounter ??= new PollingCounter("messages-received", this, () => _messageReceived) |
| 149 | + { |
| 150 | + DisplayName = "Total Messages Received", |
| 151 | + }; |
| 152 | + _callsUnimplementedCounter ??= new PollingCounter("calls-unimplemented", this, () => _callsUnimplemented) |
| 153 | + { |
| 154 | + DisplayName = "Total Calls Unimplemented", |
| 155 | + }; |
| 156 | + } |
| 157 | + } |
| 158 | + } |
| 159 | +} |
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