org.elasticsearch.monitor.fs.JmxFsProbe Maven / Gradle / Ivy
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* 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
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package org.elasticsearch.monitor.fs;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.NodeEnvironment.NodePath;
import org.elasticsearch.env.NodeEnvironment;
import java.io.File;
import java.io.IOException;
public class JmxFsProbe extends AbstractComponent implements FsProbe {
private final NodeEnvironment nodeEnv;
@Inject
public JmxFsProbe(Settings settings, NodeEnvironment nodeEnv) {
super(settings);
this.nodeEnv = nodeEnv;
}
@Override
public FsStats stats() throws IOException {
if (!nodeEnv.hasNodeFile()) {
return new FsStats(System.currentTimeMillis(), new FsStats.Info[0]);
}
NodePath[] dataLocations = nodeEnv.nodePaths();
FsStats.Info[] infos = new FsStats.Info[dataLocations.length];
for (int i = 0; i < dataLocations.length; i++) {
infos[i] = getFSInfo(dataLocations[i]);
}
return new FsStats(System.currentTimeMillis(), infos);
}
public static FsStats.Info getFSInfo(NodePath nodePath) throws IOException {
FsStats.Info info = new FsStats.Info();
info.path = nodePath.path.toAbsolutePath().toString();
// NOTE: we use already cached (on node startup) FileStore
// since recomputing this once per second (default) could be costly,
// and it should not change:
info.total = nodePath.fileStore.getTotalSpace();
info.free = nodePath.fileStore.getUnallocatedSpace();
info.available = nodePath.fileStore.getUsableSpace();
info.type = nodePath.fileStore.type();
info.mount = nodePath.fileStore.toString();
return info;
}
}