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Support OTEL_METRIC_EXPORT_INTERVAL and OTEL_METRIC_EXPORT_TIMEOUT (#…
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135 changes: 135 additions & 0 deletions
135
test/OpenTelemetry.Tests/Internal/PeriodicExportingMetricReaderHelperTests.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| // <copyright file="PeriodicExportingMetricReaderHelperTests.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> | ||
|
|
||
| using System; | ||
| using OpenTelemetry.Exporter; | ||
| using OpenTelemetry.Metrics; | ||
| using Xunit; | ||
|
|
||
| namespace OpenTelemetry.Internal.Tests | ||
| { | ||
| public class PeriodicExportingMetricReaderHelperTests : IDisposable | ||
| { | ||
| public PeriodicExportingMetricReaderHelperTests() | ||
| { | ||
| ClearEnvVars(); | ||
| } | ||
|
|
||
| public void Dispose() | ||
| { | ||
| ClearEnvVars(); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void CreatePeriodicExportingMetricReader_Defaults() | ||
| { | ||
| var reader = CreatePeriodicExportingMetricReader(); | ||
|
|
||
| Assert.Equal(60000, reader.ExportIntervalMilliseconds); | ||
| Assert.Equal(30000, reader.ExportTimeoutMilliseconds); | ||
| Assert.Equal(MetricReaderTemporalityPreference.Cumulative, reader.TemporalityPreference); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void CreatePeriodicExportingMetricReader_TemporalityPreference_FromOptions() | ||
| { | ||
| var value = MetricReaderTemporalityPreference.Delta; | ||
| var reader = CreatePeriodicExportingMetricReader(new() | ||
| { | ||
| TemporalityPreference = value, | ||
| }); | ||
|
|
||
| Assert.Equal(value, reader.TemporalityPreference); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void CreatePeriodicExportingMetricReader_ExportIntervalMilliseconds_FromOptions() | ||
| { | ||
| Environment.SetEnvironmentVariable(PeriodicExportingMetricReaderHelper.OTelMetricExportIntervalEnvVarKey, "88888"); // should be ignored, as value set via options has higher priority | ||
| var value = 123; | ||
| var reader = CreatePeriodicExportingMetricReader(new() | ||
| { | ||
| PeriodicExportingMetricReaderOptions = new() | ||
| { | ||
| ExportIntervalMilliseconds = value, | ||
| }, | ||
| }); | ||
|
|
||
| Assert.Equal(value, reader.ExportIntervalMilliseconds); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void CreatePeriodicExportingMetricReader_ExportTimeoutMilliseconds_FromOptions() | ||
| { | ||
| Environment.SetEnvironmentVariable(PeriodicExportingMetricReaderHelper.OTelMetricExportTimeoutEnvVarKey, "99999"); // should be ignored, as value set via options has higher priority | ||
| var value = 456; | ||
| var reader = CreatePeriodicExportingMetricReader(new() | ||
| { | ||
| PeriodicExportingMetricReaderOptions = new() | ||
| { | ||
| ExportTimeoutMilliseconds = value, | ||
| }, | ||
| }); | ||
|
|
||
| Assert.Equal(value, reader.ExportTimeoutMilliseconds); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void CreatePeriodicExportingMetricReader_ExportIntervalMilliseconds_FromEnvVar() | ||
| { | ||
| var value = 789; | ||
| Environment.SetEnvironmentVariable(PeriodicExportingMetricReaderHelper.OTelMetricExportIntervalEnvVarKey, value.ToString()); | ||
| var reader = CreatePeriodicExportingMetricReader(); | ||
|
|
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| Assert.Equal(value, reader.ExportIntervalMilliseconds); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void CreatePeriodicExportingMetricReader_ExportTimeoutMilliseconds_FromEnvVar() | ||
| { | ||
| var value = 246; | ||
| Environment.SetEnvironmentVariable(PeriodicExportingMetricReaderHelper.OTelMetricExportTimeoutEnvVarKey, value.ToString()); | ||
| var reader = CreatePeriodicExportingMetricReader(); | ||
|
|
||
| Assert.Equal(value, reader.ExportTimeoutMilliseconds); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void EnvironmentVariableNames() | ||
| { | ||
| Assert.Equal("OTEL_METRIC_EXPORT_INTERVAL", PeriodicExportingMetricReaderHelper.OTelMetricExportIntervalEnvVarKey); | ||
| Assert.Equal("OTEL_METRIC_EXPORT_TIMEOUT", PeriodicExportingMetricReaderHelper.OTelMetricExportTimeoutEnvVarKey); | ||
| } | ||
|
|
||
| private static void ClearEnvVars() | ||
| { | ||
| Environment.SetEnvironmentVariable(PeriodicExportingMetricReaderHelper.OTelMetricExportIntervalEnvVarKey, null); | ||
| Environment.SetEnvironmentVariable(PeriodicExportingMetricReaderHelper.OTelMetricExportTimeoutEnvVarKey, null); | ||
| } | ||
|
|
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| private static PeriodicExportingMetricReader CreatePeriodicExportingMetricReader( | ||
| MetricReaderOptions options = null) | ||
| { | ||
| if (options == null) | ||
| { | ||
| options = new(); | ||
| } | ||
|
|
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| var dummyMetricExporter = new InMemoryExporter<Metric>(new Metric[0]); | ||
| return PeriodicExportingMetricReaderHelper.CreatePeriodicExportingMetricReader(dummyMetricExporter, options); | ||
| } | ||
| } | ||
| } |