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core/src/main/java/com/uber/m3/tally/NullStatsReporter.java
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| // Copyright (c) 2020 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| package com.uber.m3.tally; | ||
|
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| import com.uber.m3.util.Duration; | ||
|
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| import java.util.Map; | ||
|
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| /** | ||
| * NullStatsReporter is a noop implementation of StatsReporter. | ||
| */ | ||
| public class NullStatsReporter implements StatsReporter { | ||
| @Override | ||
| public void reportCounter(String name, Map<String, String> tags, long value) { | ||
| // noop | ||
| } | ||
|
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| @Override | ||
| public void reportGauge(String name, Map<String, String> tags, double value) { | ||
| // noop | ||
| } | ||
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| @Override | ||
| public void reportTimer(String name, Map<String, String> tags, Duration interval) { | ||
| // noop | ||
| } | ||
|
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| @Override | ||
| public void reportHistogramValueSamples( | ||
| String name, Map<String, | ||
| String> tags, | ||
| Buckets buckets, | ||
| double bucketLowerBound, | ||
| double bucketUpperBound, | ||
| long samples | ||
| ) { | ||
| // noop | ||
| } | ||
|
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| @Override | ||
| public void reportHistogramDurationSamples( | ||
| String name, | ||
| Map<String, String> tags, | ||
| Buckets buckets, | ||
| Duration bucketLowerBound, | ||
| Duration bucketUpperBound, long samples | ||
| ) { | ||
| // noop | ||
| } | ||
|
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| @Override | ||
| public Capabilities capabilities() { | ||
| return CapableOf.NONE; | ||
| } | ||
|
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| @Override | ||
| public void flush() { | ||
| // noop | ||
| } | ||
|
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| @Override | ||
| public void close() { | ||
| // noop | ||
| } | ||
| } |
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37
core/src/test/java/com/uber/m3/tally/NullStatsReporterTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| // Copyright (c) 2020 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
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| package com.uber.m3.tally; | ||
|
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| import org.junit.Test; | ||
|
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| import static org.junit.Assert.assertFalse; | ||
| import static org.junit.Assert.assertNotNull; | ||
|
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| public class NullStatsReporterTest { | ||
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| @Test | ||
| public void capabilities() { | ||
| NullStatsReporter reporter = new NullStatsReporter(); | ||
| assertNotNull(reporter.capabilities()); | ||
| assertFalse(reporter.capabilities().reporting()); | ||
| assertFalse(reporter.capabilities().tagging()); | ||
| } | ||
| } |
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