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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.feedapi;
import com.yahoo.cloud.config.SlobroksConfig;
import com.yahoo.document.config.DocumentmanagerConfig;
import com.yahoo.documentapi.VisitorParameters;
import com.yahoo.documentapi.VisitorSession;
import com.yahoo.documentapi.messagebus.MessageBusDocumentAccess;
import com.yahoo.documentapi.messagebus.MessageBusParams;
import com.yahoo.documentapi.messagebus.protocol.PutDocumentMessage;
import com.yahoo.documentapi.messagebus.protocol.RemoveDocumentMessage;
import com.yahoo.documentapi.messagebus.protocol.UpdateDocumentMessage;
import com.yahoo.jdisc.Metric;
import com.yahoo.messagebus.Message;
import com.yahoo.messagebus.ReplyHandler;
import com.yahoo.messagebus.SourceSession;
import com.yahoo.messagebus.network.rpc.RPCNetworkParams;
import java.util.Collections;
public class MessageBusSessionFactory implements SessionFactory {
private final MessageBusDocumentAccess access;
private final MessagePropertyProcessor processor;
private interface Metrics {
String NUM_OPERATIONS = "num_operations";
String NUM_PUTS = "num_puts";
String NUM_REMOVES = "num_removes";
String NUM_UPDATES = "num_updates";
}
@SuppressWarnings("unused") // used from extensions
public MessageBusSessionFactory(MessagePropertyProcessor processor) {
this(processor, null, null);
}
public MessageBusSessionFactory(MessagePropertyProcessor processor,
DocumentmanagerConfig documentmanagerConfig,
SlobroksConfig slobroksConfig) {
this.processor = processor;
MessageBusParams params = new MessageBusParams(processor.getLoadTypes());
params.setTraceLevel(processor.getFeederOptions().getTraceLevel());
RPCNetworkParams rpcNetworkParams = processor.getFeederOptions().getNetworkParams();
if (slobroksConfig != null) // not set: will subscribe
rpcNetworkParams.setSlobroksConfig(slobroksConfig);
params.setRPCNetworkParams(rpcNetworkParams);
params.setDocumentManagerConfigId("client");
if (documentmanagerConfig != null) // not set: will subscribe
params.setDocumentmanagerConfig(documentmanagerConfig);
access = new MessageBusDocumentAccess(params);
}
public MessageBusDocumentAccess getAccess() {
return access;
}
@Override
public synchronized SendSession createSendSession(ReplyHandler handler, Metric metric) {
return new SourceSessionWrapper(
access.getMessageBus().createSourceSession(handler, processor.getFeederOptions().toSourceSessionParams()),
metric);
}
public void shutDown() {
access.shutdown();
}
@Override
public synchronized VisitorSession createVisitorSession(VisitorParameters params) {
try {
return access.createVisitorSession(params);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private class SourceSessionWrapper extends SendSession {
private final SourceSession session;
private final Metric metric;
private final Metric.Context context;
private SourceSessionWrapper(SourceSession session, Metric metric) {
this.session = session;
this.metric = metric;
this.context = metric.createContext(Collections.<String, String>emptyMap());
}
@Override
protected com.yahoo.messagebus.Result onSend(Message m, boolean blockIfQueueFull) throws InterruptedException {
updateCounters(m);
if (blockIfQueueFull) {
return session.sendBlocking(m);
} else {
return session.send(m);
}
}
private void updateCounters(Message m) {
metric.add(Metrics.NUM_OPERATIONS, 1, context);
if (m instanceof PutDocumentMessage) {
metric.add(Metrics.NUM_PUTS, 1, context);
} else if (m instanceof RemoveDocumentMessage) {
metric.add(Metrics.NUM_REMOVES, 1, context);
} else if (m instanceof UpdateDocumentMessage) {
metric.add(Metrics.NUM_UPDATES, 1, context);
}
}
@Override
public void close() {
session.close();
}
}
}
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