2020-07-23 12:42:33 -04:00
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[discrete]
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2017-03-28 17:23:01 -04:00
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[[api-java-stats]]
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=== Stats API
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The `stats` API returns the current {watcher} metrics. You can control what
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metrics this API returns using the `metric` parameter.
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The following example queries the `stats` API :
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[source,java]
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--------------------------------------------------
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WatcherStatsResponse watcherStatsResponse = watcherClient.prepareWatcherStats().get();
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--------------------------------------------------
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A successful call returns a response structure that can be accessed as shown:
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[source,java]
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--------------------------------------------------
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WatcherBuild build = watcherStatsResponse.getBuild();
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// The current size of the watcher execution queue
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long executionQueueSize = watcherStatsResponse.getThreadPoolQueueSize();
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// The maximum size the watch execution queue has grown to
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long executionQueueMaxSize = watcherStatsResponse.getThreadPoolQueueSize();
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// The total number of watches registered in the system
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long totalNumberOfWatches = watcherStatsResponse.getWatchesCount();
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// {watcher} state (STARTING,STOPPED or STARTED)
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WatcherState watcherState = watcherStatsResponse.getWatcherState();
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--------------------------------------------------
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