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Program.cs
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Program.cs
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// Copyright 2022 Serilog Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ReSharper disable ExplicitCallerInfoArgument
using Serilog;
using System.Diagnostics;
using Serilog.Core;
using Serilog.Sinks.OpenTelemetry;
// Without activity listeners present, trace and span ids are not collected.
using var listener = new ActivityListener();
listener.ShouldListenTo = _ => true;
listener.Sample = (ref ActivityCreationOptions<ActivityContext> _) => ActivitySamplingResult.AllData;
ActivitySource.AddActivityListener(listener);
var source = new ActivitySource("test.example", "1.0.0");
using (var grpcLogger = CreateLogger(OtlpProtocol.Grpc))
{
using var activity = source.StartActivity("grpc-loop");
SendLogs(grpcLogger, "grpc");
}
using (var httpLogger = CreateLogger(OtlpProtocol.HttpProtobuf))
{
using var activity = source.StartActivity("http-loop");
SendLogs(httpLogger, "http/protobuf");
}
static void SendLogs(ILogger logger, string protocol)
{
var position = new { Latitude = Random.Shared.Next(-90, 91), Longitude = Random.Shared.Next(0, 361) };
var elapsedMs = Random.Shared.Next(0, 101);
var roll = Random.Shared.Next(0, 7);
logger
.ForContext("Elapsed", elapsedMs)
.ForContext("Protocol", protocol)
.Information("The position is {@Position}", position);
try
{
throw new Exception(protocol);
}
catch (Exception ex)
{
logger.ForContext("protocol", protocol).Error(ex, "Error on roll {Roll}", roll);
}
}
static Logger CreateLogger(OtlpProtocol protocol)
{
var endpoint = protocol == OtlpProtocol.HttpProtobuf ?
"http://localhost:4318/v1/logs" :
"http://localhost:4317";
return new LoggerConfiguration()
.WriteTo.OpenTelemetry(options => {
options.Endpoint = endpoint;
options.Protocol = protocol;
// Prevent tracing of outbound requests from the sink
options.HttpMessageHandler = new SocketsHttpHandler { ActivityHeadersPropagator = null };
options.IncludedData =
IncludedData.SpanIdField
| IncludedData.TraceIdField
| IncludedData.MessageTemplateTextAttribute
| IncludedData.MessageTemplateMD5HashAttribute;
options.ResourceAttributes = new Dictionary<string, object>
{
["service.name"] = "test-logging-service",
["index"] = 10,
["flag"] = true,
["pi"] = 3.14
};
options.Headers = new Dictionary<string, string>
{
["Authorization"] = "Basic dXNlcjphYmMxMjM=", // user:abc123
};
options.BatchingOptions.BatchSizeLimit = 700;
options.BatchingOptions.BufferingTimeLimit = TimeSpan.FromSeconds(1);
options.BatchingOptions.QueueLimit = 10;
})
.CreateLogger();
}