/*
* 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;
class NodeOsStatsExpression extends NestedNodeStatsExpression {
private static final String UPTIME = "uptime";
private static final String TIMESTAMP = "timestamp";
private static final String PROBE_TIMESTAMP = "probe_timestamp";
private static final String CPU = "cpu";
NodeOsStatsExpression() {
childImplementations.put(UPTIME, new SimpleNodeStatsExpression<Long>() {
@Override
public Long innerValue() {
long uptime = this.row.extendedOsStats().uptime().millis();
return uptime > 0 ? uptime : -1;
}
});
childImplementations.put(TIMESTAMP, new SimpleNodeStatsExpression<Long>() {
@Override
public Long innerValue() {
assert this.row.timestamp() > 0 : "os timestamp must always be greater than 0.";
return this.row.timestamp();
}
});
childImplementations.put(PROBE_TIMESTAMP, new SimpleNodeStatsExpression<Long>() {
@Override
public Long innerValue() {
return this.row.extendedOsStats().timestamp();
}
});
childImplementations.put(CPU, new NodeOsCpuStatsExpression());
}
}