/*
* 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.local;
import io.crate.metadata.ReferenceImplementation;
import io.crate.monitor.ExtendedOsStats;
import io.crate.operation.reference.NestedObjectExpression;
class NodeOsExpression extends NestedObjectExpression {
private static final String CPU = "cpu";
private static final String UPTIME = "uptime";
private static final String TIMESTAMP = "timestamp";
private static final String PROBE_TIMESTAMP = "probe_timestamp";
NodeOsExpression(ExtendedOsStats extendedOsStats) {
addChildImplementations(extendedOsStats);
}
private void addChildImplementations(final ExtendedOsStats extendedOsStats) {
childImplementations.put(UPTIME, new ReferenceImplementation<Long>() {
@Override
public Long value() {
long uptime = extendedOsStats.uptime().millis();
return uptime == -1000 ? -1 : uptime;
}
});
childImplementations.put(TIMESTAMP, new ReferenceImplementation<Long>() {
final long ts = System.currentTimeMillis();
@Override
public Long value() {
return ts;
}
});
childImplementations.put(PROBE_TIMESTAMP, extendedOsStats::timestamp);
childImplementations.put(CPU, new NodeOsCpuExpression(extendedOsStats.cpu()));
}
}