/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.reference.sys.node;
import com.google.common.collect.ImmutableList;
import io.crate.metadata.ColumnIdent;
import io.crate.operation.reference.sys.SysNodeObjectReference;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.monitor.os.OsStats;
import org.elasticsearch.node.service.NodeService;
public class NodeOsCpuExpression extends SysNodeObjectReference {
public static final String NAME = "cpu";
abstract class CpuExpression extends SysNodeExpression<Object> {
CpuExpression(String name) {super(new ColumnIdent(NodeOsExpression.NAME, ImmutableList.of(NAME, name))); }
}
public static final String SYS = "system";
public static final String USER = "user";
public static final String IDLE = "idle";
public static final String USAGE = "used";
public static final String STOLEN = "stolen";
private final NodeService nodeService;
@Inject
public NodeOsCpuExpression(NodeService nodeService) {
super(new ColumnIdent(NodeOsExpression.NAME, NAME));
this.nodeService = nodeService;
addChildImplementations();
}
private void addChildImplementations() {
childImplementations.put(SYS, new CpuExpression(SYS) {
@Override
public Short value() {
OsStats os = nodeService.stats().getOs();
if (os != null) {
return os.cpu().sys();
} else { return -1; }
}
});
childImplementations.put(USER, new CpuExpression(USER) {
@Override
public Short value() {
OsStats os = nodeService.stats().getOs();
if (os != null) {
return os.cpu().user();
} else { return -1; }
}
});
childImplementations.put(IDLE, new CpuExpression(IDLE) {
@Override
public Short value() {
OsStats os = nodeService.stats().getOs();
if (os != null) {
return os.cpu().idle();
} else { return -1; }
}
});
childImplementations.put(USAGE, new CpuExpression(USAGE) {
@Override
public Short value() {
OsStats os = nodeService.stats().getOs();
if (os != null) {
return (short) (os.cpu().sys() + os.cpu().user());
} else { return -1; }
}
});
childImplementations.put(STOLEN, new CpuExpression(STOLEN) {
@Override
public Short value() {
OsStats os = nodeService.stats().getOs();
if (os != null) {
return os.cpu().stolen();
} else { return -1; }
}
});
}
}