| // 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.pull; |
| |
| 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.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 FetchReplicationMetrics { |
| private final Timer1<String> executionTime; |
| private final Histogram1<String> executionDelay; |
| private final Histogram1<String> executionRetries; |
| |
| @Inject |
| FetchReplicationMetrics(@PluginName String pluginName, MetricMaker metricMaker) { |
| Field<String> SOURCE_FIELD = |
| Field.ofString( |
| "source", |
| (metadataBuilder, fieldValue) -> |
| metadataBuilder |
| .pluginName(pluginName) |
| .addPluginMetadata(PluginMetadata.create("source", fieldValue))) |
| .build(); |
| |
| executionTime = |
| metricMaker.newTimer( |
| "replication_latency", |
| new Description("Time spent fetching from remote source.") |
| .setCumulative() |
| .setUnit(Description.Units.MILLISECONDS), |
| SOURCE_FIELD); |
| |
| executionDelay = |
| metricMaker.newHistogram( |
| "replication_delay", |
| new Description("Time spent waiting before fetching from remote source") |
| .setCumulative() |
| .setUnit(Description.Units.MILLISECONDS), |
| SOURCE_FIELD); |
| |
| executionRetries = |
| metricMaker.newHistogram( |
| "replication_retries", |
| new Description("Number of retries when fetching from remote sources") |
| .setCumulative() |
| .setUnit("retries"), |
| SOURCE_FIELD); |
| } |
| |
| /** |
| * Start the replication latency timer from a source. |
| * |
| * @param name the source name. |
| * @return the timer context. |
| */ |
| public Timer1.Context<String> start(String name) { |
| return executionTime.start(name); |
| } |
| |
| /** |
| * Record the replication delay and retry metrics for a source. |
| * |
| * @param name the source name. |
| * @param delay replication delay in milliseconds. |
| * @param retries number of retries. |
| */ |
| public void record(String name, long delay, long retries) { |
| executionDelay.record(name, delay); |
| executionRetries.record(name, retries); |
| } |
| } |