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examples/event-counters/Examples.EventCounters/Examples.EventCounters.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net6.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
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| <ItemGroup> | ||
| <PackageReference Include="OpenTelemetry" Version="$(OpenTelemetryCoreLatestVersion)" /> | ||
| <PackageReference Include="OpenTelemetry.Exporter.Console" Version="$(OpenTelemetryCoreLatestVersion)" /> | ||
| </ItemGroup> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="$(RepoRoot)\src\OpenTelemetry.Instrumentation.EventCounters\OpenTelemetry.Instrumentation.EventCounters.csproj" /> | ||
| </ItemGroup> | ||
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| </Project> |
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| // <copyright file="Program.cs" company="OpenTelemetry Authors"> | ||
| // Copyright The OpenTelemetry Authors | ||
| // | ||
| // 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. | ||
| // </copyright> | ||
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| using System.Diagnostics.Tracing; | ||
| using OpenTelemetry; | ||
| using OpenTelemetry.Metrics; | ||
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| // Create EventSources and EventCounters | ||
| ThreadLocal<Random> random = new(() => new Random()); | ||
| using EventSource eventSource = new("MyEventSource"); | ||
| using EventCounter eventCounter = new("MyEventCounter", eventSource); | ||
| using PollingCounter pollingCounter = new("MyPollingCounter", eventSource, () => random.Value!.NextDouble()); | ||
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| // Create and Configure Meter Provider | ||
| using var meterProvider = Sdk.CreateMeterProviderBuilder() | ||
| .AddEventCountersInstrumentation(options => | ||
| { | ||
| options.AddEventSources(eventSource.Name); | ||
| options.RefreshIntervalSecs = 1; | ||
| }) | ||
| .AddConsoleExporter() | ||
| .Build(); | ||
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| // Write to EventCounters | ||
| eventCounter.WriteMetric(0); | ||
| eventCounter.WriteMetric(1000); | ||
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| // Wait for EventCounter data to be polled (RefreshIntervalSecs is 1 second by default) | ||
| Thread.Sleep(1200); |
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| # EventCounters Instrumentation for OpenTelemetry .NET - Examples | ||
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| This is an all-in-one sample that shows how to publish EventCounters using | ||
| the OpenTelemetry Metrics Api. | ||
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| ## Expected Output | ||
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| After running `dotnet run` from this directory | ||
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| ```text | ||
| Resource associated with Metric: | ||
| service.name: unknown_service:Examples.EventCounters | ||
| Export EventCounters.MyEventSource.MyEventCounter, Meter: OpenTelemetry.Instrumentation.EventCounters/1.0.0.0 | ||
| (2022-11-01T17:37:37.9046769Z, 2022-11-01T17:37:38.4014060Z] DoubleGauge | ||
| Value: 500 | ||
| Export EventCounters.MyEventSource.MyPollingCounter, Meter: OpenTelemetry.Instrumentation.EventCounters/1.0.0.0 | ||
| (2022-11-01T17:37:37.9076414Z, 2022-11-01T17:37:38.4014299Z] DoubleGauge | ||
| Value: 0.5233669819037192 | ||
| ``` |
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