61 lines
2.4 KiB
Java
61 lines
2.4 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright 2015 Cloudius Systems
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*
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* Modified by Cloudius Systems
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*/
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package org.apache.cassandra.metrics;
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import javax.management.MalformedObjectNameException;
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/**
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* Metrics for commit log
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*/
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public class CommitLogMetrics implements Metrics {
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public CommitLogMetrics() {
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}
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@Override
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public void register(MetricsRegistry registry) throws MalformedObjectNameException {
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MetricNameFactory factory = new DefaultNameFactory("CommitLog");
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/** Number of completed tasks */
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registry.register(() -> registry.gauge("/commitlog/metrics/completed_tasks"),
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factory.createMetricName("CompletedTasks"));
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/** Number of pending tasks */
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registry.register(() -> registry.gauge("/commitlog/metrics/pending_tasks"),
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factory.createMetricName("PendingTasks"));
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/** Current size used by all the commit log segments */
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registry.register(() -> registry.gauge("/commitlog/metrics/total_commit_log_size"),
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factory.createMetricName("TotalCommitLogSize"));
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/**
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* Time spent waiting for a CLS to be allocated - under normal
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* conditions this should be zero
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*/
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registry.register(() -> registry.timer("/commitlog/metrics/waiting_on_segment_allocation"),
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factory.createMetricName("WaitingOnSegmentAllocation"));
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/**
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* The time spent waiting on CL sync; for Periodic this is only occurs
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* when the sync is lagging its sync interval
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*/
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registry.register(() -> registry.timer("/commitlog/metrics/waiting_on_commit"),
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factory.createMetricName("WaitingOnCommit"));
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}
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}
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