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99
...src/main/java/com/netflix/spinnaker/igor/polling/CommonPollingMonitorInstrumentation.java
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| /* | ||
| * Copyright 2024 Wise, PLC. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package com.netflix.spinnaker.igor.polling; | ||
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| import com.netflix.spectator.api.Gauge; | ||
| import com.netflix.spectator.api.Id; | ||
| import com.netflix.spectator.api.Registry; | ||
| import com.netflix.spectator.api.patterns.PolledMeter; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
|
|
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| public class CommonPollingMonitorInstrumentation { | ||
|
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| private final Registry registry; | ||
| private final Id itemsCachedId; | ||
| private final Id itemsOverThresholdId; | ||
| private final Id pollCycleFailedId; | ||
| private final Id pollCycleTimingId; | ||
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| public CommonPollingMonitorInstrumentation(Registry registry) { | ||
| this.registry = registry; | ||
| itemsCachedId = registry.createId("pollingMonitor.newItems"); | ||
| itemsOverThresholdId = registry.createId("pollingMonitor.itemsOverThreshold"); | ||
| pollCycleFailedId = registry.createId("pollingMonitor.failed"); | ||
| pollCycleTimingId = registry.createId("pollingMonitor.pollTiming"); | ||
| } | ||
|
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| public void trackItemsCached(AtomicInteger numberOfItems, String monitor, String partition) { | ||
| Gauge gauge = | ||
| (Gauge) registry.get(itemsCachedId.withTags("monitor", monitor, "partition", partition)); | ||
|
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| /* | ||
| Spectator gauges are slightly different from Micrometer ones: the polling gauge | ||
| has been deprecated in favour of PolledMeter. | ||
| Previous implementation resulted in NaN most of the times, while we want to store observations | ||
| on Prometheus. We don't need a DistributionSummary, but just a gauge which doesn't get garbage | ||
| collected. For a unique combination of (metricName, tags), PolledMeter will sum up the observed | ||
| values, so to avoid this, we set the gauge ONCE and we pass a strong reference holding the | ||
| latest value to be observed. | ||
| */ | ||
|
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| if (gauge == null) { | ||
| PolledMeter.using(registry) | ||
| .withId(itemsCachedId.withTags("monitor", monitor, "partition", partition)) | ||
| .monitorValue(numberOfItems); | ||
| } | ||
| } | ||
|
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| public void trackItemsOverThreshold( | ||
| AtomicInteger numberOfItems, String monitor, String partition) { | ||
| Gauge gauge = | ||
| (Gauge) | ||
| registry.get(itemsOverThresholdId.withTags("monitor", monitor, "partition", partition)); | ||
| if (gauge == null) { | ||
| PolledMeter.using(registry) | ||
| .withId(itemsOverThresholdId.withTags("monitor", monitor, "partition", partition)) | ||
| .monitorValue(numberOfItems); | ||
| } | ||
| } | ||
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| public void trackPollCycleTime(String monitor, Runnable lambda) { | ||
| registry.timer(pollCycleTimingId.withTags("monitor", monitor)).record(lambda); | ||
| } | ||
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| public void trackPollCycleFailed(String monitor, String partition) { | ||
| registry | ||
| .counter(getPollCycleFailedId().withTags("monitor", monitor, "partition", partition)) | ||
| .increment(); | ||
| } | ||
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| public Id getItemsCachedId() { | ||
| return itemsCachedId; | ||
| } | ||
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| public Id getItemsOverThresholdId() { | ||
| return itemsOverThresholdId; | ||
| } | ||
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| public Id getPollCycleFailedId() { | ||
| return pollCycleFailedId; | ||
| } | ||
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| public Id getPollCycleTimingId() { | ||
| return pollCycleTimingId; | ||
| } | ||
| } |
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