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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.document.Document;
import com.yahoo.document.DocumentId;
import com.yahoo.document.DocumentPut;
import com.yahoo.document.DocumentUpdate;
import com.yahoo.document.TestAndSetCondition;
import com.yahoo.documentapi.messagebus.protocol.PutDocumentMessage;
import com.yahoo.documentapi.messagebus.protocol.RemoveDocumentMessage;
import com.yahoo.documentapi.messagebus.protocol.UpdateDocumentMessage;
import com.yahoo.messagebus.Message;
import java.util.ArrayList;
import java.util.List;
/** Simplifies sending messages belonging to a single result callback. */
public class SingleSender implements SimpleFeedAccess {
private final SharedSender.ResultCallback owner;
private final SharedSender sender;
private final List<MessageProcessor> messageProcessors = new ArrayList<>();
private boolean blockingQueue;
public SingleSender(SharedSender.ResultCallback owner, SharedSender sender, boolean blockingQueue) {
this.owner = owner;
this.sender = sender;
this.blockingQueue = blockingQueue;
}
public SingleSender(SharedSender.ResultCallback owner, SharedSender sender) {
this(owner, sender, true);
}
@Override
public void put(Document doc) {
send(new PutDocumentMessage(new DocumentPut(doc)));
}
@Override
public void remove(DocumentId docId) {
send(new RemoveDocumentMessage(docId));
}
@Override
public void update(DocumentUpdate update) {
send(new UpdateDocumentMessage(update));
}
@Override
public void put(Document doc, TestAndSetCondition condition) {
PutDocumentMessage message = new PutDocumentMessage(new DocumentPut(doc));
message.setCondition(condition);
send(message);
}
@Override
public void remove(DocumentId docId, TestAndSetCondition condition) {
RemoveDocumentMessage message = new RemoveDocumentMessage(docId);
message.setCondition(condition);
send(message);
}
@Override
public void update(DocumentUpdate update, TestAndSetCondition condition) {
UpdateDocumentMessage message = new UpdateDocumentMessage(update);
message.setCondition(condition);
send(message);
}
@Override
public boolean isAborted() {
return owner.isAborted();
}
public void addMessageProcessor(MessageProcessor processor) {
messageProcessors.add(processor);
}
// Runs all message processors on the message and returns it.
private Message processMessage(Message m) {
for (MessageProcessor processor : messageProcessors) {
processor.process(m);
}
return m;
}
/**
* Sends the given message.
*
* @param m The message to send
*/
public void send(Message m) {
sender.send(processMessage(m), owner, blockingQueue);
}
public void done() {
// empty
}
public boolean waitForPending(long timeoutMs) {
return sender.waitForPending(owner, timeoutMs);
}
@Override
public void close() { }
}
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