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A common base library for Apache Accumulo servers.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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
*
* https://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.
*/
package org.apache.accumulo.server.rpc;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import org.apache.accumulo.core.metrics.MetricsUtil;
import org.apache.accumulo.server.metrics.ThriftMetrics;
import org.apache.thrift.TException;
import org.apache.thrift.TProcessor;
import org.apache.thrift.protocol.TProtocol;
/**
* A {@link TProcessor} which tracks the duration of an RPC and adds it to the metrics subsystem.
*/
public class TimedProcessor implements TProcessor {
private final TProcessor other;
private final ThriftMetrics thriftMetrics;
private long idleStart = 0;
public TimedProcessor(TProcessor next) {
this.other = next;
thriftMetrics = new ThriftMetrics();
MetricsUtil.initializeProducers(thriftMetrics);
idleStart = System.nanoTime();
}
@Override
public void process(TProtocol in, TProtocol out) throws TException {
long processStart = System.nanoTime();
thriftMetrics.addIdle(NANOSECONDS.toMillis(processStart - idleStart));
try {
other.process(in, out);
} finally {
// set idle to now, calc time in process
idleStart = System.nanoTime();
thriftMetrics.addExecute(NANOSECONDS.toMillis(idleStart - processStart));
}
}
}
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