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Merge pull request #25 from avast/group-monitor
Remove MultiMonitor, add Summary and Group monitors
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core/src/main/java/com/avast/metrics/core/multi/GroupMonitor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| package com.avast.metrics.core.multi; | ||
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| import com.avast.metrics.TimerPairImpl; | ||
| import com.avast.metrics.api.*; | ||
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| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.function.Supplier; | ||
| import java.util.stream.Collectors; | ||
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| /** | ||
| * Wrapper around a group of monitors. | ||
| */ | ||
| public class GroupMonitor implements Monitor { | ||
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| private final List<Monitor> monitors; | ||
| private final Naming naming; | ||
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| /** | ||
| * Factory method. | ||
| * | ||
| * @param monitors list of monitors | ||
| * @return multiple monitor containing all passed monitors | ||
| */ | ||
| public static Monitor of(Monitor... monitors) { | ||
| return new GroupMonitor(Arrays.asList(monitors), Naming.defaultNaming()); | ||
| } | ||
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| /** | ||
| * Factory method. | ||
| * | ||
| * @param monitors list of monitors | ||
| * @param naming naming conventions for TimerPairs | ||
| * @return multiple monitor containing all passed monitors | ||
| */ | ||
| public static Monitor of(Naming naming, Monitor... monitors) { | ||
| return new GroupMonitor(Arrays.asList(monitors), naming); | ||
| } | ||
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| private GroupMonitor(List<Monitor> monitors, Naming naming) { | ||
| if (monitors.size() < 2) { | ||
| throw new IllegalArgumentException("Group monitor from less than 2 counters makes no sense"); | ||
| } | ||
| this.monitors = monitors; | ||
| this.naming = naming; | ||
| } | ||
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| /** | ||
| * {@inheritDoc} | ||
| * | ||
| * @param name name of the next sub-level | ||
| * @return new group monitor with name applied to all instances | ||
| */ | ||
| @Override | ||
| public Monitor named(String name) { | ||
| List<Monitor> newMonitors = monitors.stream() | ||
| .map(monitor -> monitor.named(name)) | ||
| .collect(Collectors.toList()); | ||
| return new GroupMonitor(newMonitors, naming); | ||
| } | ||
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| /** | ||
| * {@inheritDoc} | ||
| * | ||
| * @param name1 name of the next sub-level | ||
| * @param name2 name of the next sub-level | ||
| * @param restOfNames name of the next sub-level | ||
| * @return new group monitor with name applied to all instances | ||
| */ | ||
| @Override | ||
| public Monitor named(String name1, String name2, String... restOfNames) { | ||
| List<Monitor> newMonitors = monitors.stream() | ||
| .map(monitor -> monitor.named(name1, name2, restOfNames)) | ||
| .collect(Collectors.toList()); | ||
| return new GroupMonitor(newMonitors, naming); | ||
| } | ||
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| @Override | ||
| public String getName() { | ||
| return monitors.get(0).getName(); | ||
| } | ||
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| @Override | ||
| public Meter newMeter(String name) { | ||
| List<Meter> meters = monitors.stream() | ||
| .map(m -> m.newMeter(name)) | ||
| .collect(Collectors.toList()); | ||
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| return new MultiMeter(meters); | ||
| } | ||
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| @Override | ||
| public Counter newCounter(String name) { | ||
| List<Counter> counters = monitors.stream() | ||
| .map(m -> m.newCounter(name)) | ||
| .collect(Collectors.toList()); | ||
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| return new MultiCounter(counters); | ||
| } | ||
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| @Override | ||
| public Timer newTimer(String name) { | ||
| List<Timer> timers = monitors.stream() | ||
| .map(m -> m.newTimer(name)) | ||
| .collect(Collectors.toList()); | ||
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| return new MultiTimer(timers); | ||
| } | ||
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| @Override | ||
| public TimerPair newTimerPair(String name) { | ||
| return new TimerPairImpl( | ||
| newTimer(naming.successTimerName(name)), | ||
| newTimer(naming.failureTimerName(name)) | ||
| ); | ||
| } | ||
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| @Override | ||
| public <T> Gauge<T> newGauge(String name, Supplier<T> gauge) { | ||
| return newGauge(name, false, gauge); | ||
| } | ||
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| @Override | ||
| public <T> Gauge<T> newGauge(String name, boolean replaceExisting, Supplier<T> gauge) { | ||
| List<Gauge<T>> gauges = monitors.stream() | ||
| .map(monitor -> monitor.newGauge(name, replaceExisting, gauge)) | ||
| .collect(Collectors.toList()); | ||
| return gauges.get(0); | ||
| } | ||
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| @Override | ||
| public Histogram newHistogram(String name) { | ||
| List<Histogram> histograms = monitors.stream() | ||
| .map(m -> m.newHistogram(name)) | ||
| .collect(Collectors.toList()); | ||
|
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| return new MultiHistogram(histograms); | ||
| } | ||
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| @Override | ||
| public void remove(Metric metric) { | ||
| monitors.forEach(monitor -> monitor.remove(metric)); | ||
| } | ||
|
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| @Override | ||
| public void close() { | ||
| monitors.forEach(Monitor::close); | ||
| } | ||
|
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| } |
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