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Adding the CompactionMetrics

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The CompactionMetrics is used to report statistics about compaction. It
is based on calling the API that defined in compaction_manager.json

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This commit is contained in:
Amnon Heiman 2015-07-02 10:08:00 +03:00
parent 1b36b044fb
commit 81b26d2b53
2 changed files with 78 additions and 0 deletions
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4
src/main/java/org/apache/cassandra/db/compaction/CompactionManager.java
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@ -19,11 +19,14 @@ package org.apache.cassandra.db.compaction;
import java.lang.management.ManagementFactory;
import java.util.*;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.openmbean.TabularData;
import javax.ws.rs.core.MultivaluedMap;
import org.apache.cassandra.metrics.CompactionMetrics;
import com.cloudius.urchin.api.APIClient;
import com.sun.jersey.core.util.MultivaluedMapImpl;
@ -46,6 +49,7 @@ public class CompactionManager implements CompactionManagerMBean {
.getLogger(CompactionManager.class.getName());
public static final CompactionManager instance;
private APIClient c = new APIClient();
CompactionMetrics metrics = new CompactionMetrics();
public void log(String str) {
logger.info(str);

74
src/main/java/org/apache/cassandra/metrics/CompactionMetrics.java Normal file
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@ -0,0 +1,74 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/*
* Copyright 2015 Cloudius Systems
*
* Modified by Cloudius Systems
*/
package org.apache.cassandra.metrics;
import java.util.concurrent.TimeUnit;
import com.cloudius.urchin.api.APIClient;
import com.cloudius.urchin.metrics.APIMetrics;
import com.cloudius.urchin.metrics.DefaultNameFactory;
import com.cloudius.urchin.metrics.MetricNameFactory;
import com.yammer.metrics.core.Counter;
import com.yammer.metrics.core.Gauge;
import com.yammer.metrics.core.Meter;
/**
* Metrics for compaction.
*/
public class CompactionMetrics {
public static final MetricNameFactory factory = new DefaultNameFactory(
"Compaction");
private APIClient c = new APIClient();
/** Estimated number of compactions remaining to perform */
public final Gauge<Integer> pendingTasks;
/** Number of completed compactions since server [re]start */
public final Gauge<Long> completedTasks;
/** Total number of compactions since server [re]start */
public final Meter totalCompactionsCompleted;
/** Total number of bytes compacted since server [re]start */
public final Counter bytesCompacted;
public CompactionMetrics() {
pendingTasks = APIMetrics.newGauge(
factory.createMetricName("PendingTasks"), new Gauge<Integer>() {
public Integer value() {
return c.getIntValue("/compaction_manager/metrics/pending_tasks");
}
});
completedTasks = APIMetrics.newGauge(
factory.createMetricName("CompletedTasks"), new Gauge<Long>() {
public Long value() {
return c.getLongValue("/compaction_manager/metrics/completed_tasks");
}
});
totalCompactionsCompleted = APIMetrics.newMeter(
"/compaction_manager/metrics/total_compactions_completed",
factory.createMetricName("TotalCompactionsCompleted"),
"compaction completed", TimeUnit.SECONDS);
bytesCompacted = APIMetrics.newCounter(
"/compaction_manager/metrics/bytes_compacted",
factory.createMetricName("BytesCompacted"));
}
}