| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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. |
| |
| package com.googlesource.gerrit.plugins.replication; |
| |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.metrics.Description; |
| import com.google.gerrit.metrics.Field; |
| import com.google.gerrit.metrics.Histogram1; |
| import com.google.gerrit.metrics.Histogram3; |
| import com.google.gerrit.metrics.MetricMaker; |
| import com.google.gerrit.metrics.Timer1; |
| import com.google.gerrit.server.logging.PluginMetadata; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| |
| @Singleton |
| public class ReplicationMetrics { |
| private final Timer1<String> executionTime; |
| private final Histogram1<String> executionDelay; |
| private final Histogram1<String> executionRetries; |
| private final Histogram3<Integer, String, String> slowProjectReplicationLatency; |
| |
| @Inject |
| ReplicationMetrics(@PluginName String pluginName, MetricMaker metricMaker) { |
| Field<String> DEST_FIELD = |
| Field.ofString( |
| "destination", |
| (metadataBuilder, fieldValue) -> |
| metadataBuilder |
| .pluginName(pluginName) |
| .addPluginMetadata(PluginMetadata.create("destination", fieldValue))) |
| .build(); |
| |
| Field<String> PROJECT_FIELD = |
| Field.ofString( |
| "project", |
| (metadataBuilder, fieldValue) -> |
| metadataBuilder |
| .pluginName(pluginName) |
| .addPluginMetadata(PluginMetadata.create("project", fieldValue))) |
| .build(); |
| |
| Field<Integer> SLOW_THRESHOLD_FIELD = |
| Field.ofInteger( |
| "slow_threshold", |
| (metadataBuilder, fieldValue) -> |
| metadataBuilder |
| .pluginName(pluginName) |
| .addPluginMetadata( |
| PluginMetadata.create("slow_threshold", fieldValue.toString()))) |
| .build(); |
| |
| executionTime = |
| metricMaker.newTimer( |
| "replication_latency", |
| new Description("Time spent pushing to remote destination.") |
| .setCumulative() |
| .setUnit(Description.Units.MILLISECONDS), |
| DEST_FIELD); |
| |
| executionDelay = |
| metricMaker.newHistogram( |
| "replication_delay", |
| new Description("Time spent waiting before pushing to remote destination") |
| .setCumulative() |
| .setUnit(Description.Units.MILLISECONDS), |
| DEST_FIELD); |
| |
| executionRetries = |
| metricMaker.newHistogram( |
| "replication_retries", |
| new Description("Number of retries when pushing to remote destination") |
| .setCumulative() |
| .setUnit("retries"), |
| DEST_FIELD); |
| |
| slowProjectReplicationLatency = |
| metricMaker.newHistogram( |
| "latency_slower_than_threshold" + "", |
| new Description( |
| "latency for project to destination, where latency was slower than threshold") |
| .setCumulative() |
| .setUnit(Description.Units.MILLISECONDS), |
| SLOW_THRESHOLD_FIELD, |
| PROJECT_FIELD, |
| DEST_FIELD); |
| } |
| |
| /** |
| * Start the replication latency timer for a destination. |
| * |
| * @param name the destination name. |
| * @return the timer context. |
| */ |
| Timer1.Context<String> start(String name) { |
| return executionTime.start(name); |
| } |
| |
| /** |
| * Record the replication delay and retry metrics for a destination. |
| * |
| * @param name the destination name. |
| * @param delay replication delay in milliseconds. |
| * @param retries number of retries. |
| */ |
| void record(String name, long delay, long retries) { |
| executionDelay.record(name, delay); |
| executionRetries.record(name, retries); |
| } |
| |
| /** |
| * Record replication latency for project to destination, where latency was slower than threshold |
| * |
| * @param destinationName the destination name. |
| * @param projectName the project name. |
| * @param slowThreshold replication initialDelay in milliseconds. |
| * @param latency number of retries. |
| */ |
| void recordSlowProjectReplication( |
| String destinationName, String projectName, Integer slowThreshold, long latency) { |
| slowProjectReplicationLatency.record(slowThreshold, destinationName, projectName, latency); |
| } |
| } |