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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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
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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;
import org.elasticsearch.env.NodeEnvironment.NodePath;
import java.io.IOException;
public class FsProbe extends AbstractComponent {
private final NodeEnvironment nodeEnv;
@Inject
public FsProbe(Settings settings, NodeEnvironment nodeEnv) {
super(settings);
this.nodeEnv = nodeEnv;
}
public FsInfo stats() throws IOException {
if (!nodeEnv.hasNodeFile()) {
return new FsInfo(System.currentTimeMillis(), new FsInfo.Path[0]);
}
NodePath[] dataLocations = nodeEnv.nodePaths();
FsInfo.Path[] paths = new FsInfo.Path[dataLocations.length];
for (int i = 0; i < dataLocations.length; i++) {
paths[i] = getFSInfo(dataLocations[i]);
}
return new FsInfo(System.currentTimeMillis(), paths);
}
public static FsInfo.Path getFSInfo(NodePath nodePath) throws IOException {
FsInfo.Path fsPath = new FsInfo.Path();
fsPath.path = nodePath.path.toAbsolutePath().toString();
// NOTE: we use already cached (on node startup) FileStore and spins
// since recomputing these once per second (default) could be costly,
// and they should not change:
fsPath.total = nodePath.fileStore.getTotalSpace();
fsPath.free = nodePath.fileStore.getUnallocatedSpace();
fsPath.available = nodePath.fileStore.getUsableSpace();
fsPath.type = nodePath.fileStore.type();
fsPath.mount = nodePath.fileStore.toString();
fsPath.spins = nodePath.spins;
return fsPath;
}
}