/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
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*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
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package org.smallmind.phalanx.wire.amqp.rabbitmq;
import java.util.Map;
import java.util.concurrent.TransferQueue;
import javax.jms.JMSException;
import org.smallmind.instrument.ChronometerInstrument;
import org.smallmind.instrument.InstrumentationManager;
import org.smallmind.instrument.MetricProperty;
import org.smallmind.instrument.config.MetricConfiguration;
import org.smallmind.phalanx.wire.InvocationSignal;
import org.smallmind.phalanx.wire.ResponseTransport;
import org.smallmind.phalanx.wire.SignalCodec;
import org.smallmind.phalanx.wire.WireInvocationCircuit;
import org.smallmind.phalanx.wire.WireProperty;
import org.smallmind.phalanx.worker.Worker;
public class InvocationWorker extends Worker<RabbitMQMessage> {
private static final String CALLER_ID_AMQP_KEY = "x-opt-" + WireProperty.CALLER_ID.getKey();
private final ResponseTransport responseTransport;
private final WireInvocationCircuit invocationCircuit;
private final SignalCodec signalCodec;
public InvocationWorker (MetricConfiguration metricConfiguration, TransferQueue<RabbitMQMessage> workTransferQueue, ResponseTransport responseTransport, WireInvocationCircuit invocationCircuit, SignalCodec signalCodec) {
super(metricConfiguration, workTransferQueue);
this.responseTransport = responseTransport;
this.invocationCircuit = invocationCircuit;
this.signalCodec = signalCodec;
}
@Override
public void engageWork (final RabbitMQMessage message)
throws Exception {
final InvocationSignal invocationSignal;
invocationSignal = signalCodec.decode(message.getBody(), 0, message.getBody().length, InvocationSignal.class);
InstrumentationManager.execute(new ChronometerInstrument(this, new MetricProperty("operation", "invoke"), new MetricProperty("service", invocationSignal.getAddress().getService()), new MetricProperty("method", invocationSignal.getAddress().getFunction().getName())) {
@Override
public void withChronometer ()
throws JMSException {
invocationCircuit.handle(responseTransport, signalCodec, getCallerId(message.getProperties().getHeaders()), message.getProperties().getMessageId(), invocationSignal);
}
});
}
private String getCallerId (Map<String, Object> headers) {
if ((headers != null) && (headers.containsKey(CALLER_ID_AMQP_KEY))) {
return headers.get(CALLER_ID_AMQP_KEY).toString();
}
return null;
}
@Override
public void close () {
}
}