/*
* Licensed to 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 org.elasticsearch.monitor.os.OsStats;
class NodeMemoryStatsExpression extends NestedNodeStatsExpression {
private static final String FREE = "free";
private static final String USED = "used";
private static final String FREE_PERCENT = "free_percent";
private static final String USED_PERCENT = "used_percent";
private static final String PROBE_TIMESTAMP = "probe_timestamp";
NodeMemoryStatsExpression() {
childImplementations.put(FREE, new SimpleNodeStatsExpression<Long>() {
@Override
public Long innerValue() {
OsStats.Mem mem = this.row.osStats().getMem();
if (mem != null) {
return mem.getFree().getBytes();
}
return -1L;
}
});
childImplementations.put(USED, new SimpleNodeStatsExpression<Long>() {
@Override
public Long innerValue() {
OsStats.Mem mem = this.row.osStats().getMem();
if (mem != null) {
return mem.getUsed().getBytes();
}
return -1L;
}
});
childImplementations.put(FREE_PERCENT, new SimpleNodeStatsExpression<Short>() {
@Override
public Short innerValue() {
OsStats.Mem mem = this.row.osStats().getMem();
if (mem != null) {
return mem.getFreePercent();
}
return -1;
}
});
childImplementations.put(USED_PERCENT, new SimpleNodeStatsExpression<Short>() {
@Override
public Short innerValue() {
OsStats.Mem mem = this.row.osStats().getMem();
if (mem != null) {
return mem.getUsedPercent();
}
return -1;
}
});
childImplementations.put(PROBE_TIMESTAMP, new SimpleNodeStatsExpression<Long>() {
@Override
public Long innerValue() {
return this.row.osStats().getTimestamp();
}
});
}
}