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// Copyright 2016 Yahoo Inc. 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.documentapi.VisitorParameters;
import com.yahoo.documentapi.VisitorSession;
import com.yahoo.documentapi.messagebus.protocol.PutDocumentMessage;
import com.yahoo.jdisc.Metric;
import com.yahoo.messagebus.EmptyReply;
import com.yahoo.messagebus.Error;
import com.yahoo.messagebus.Message;
import com.yahoo.messagebus.Reply;
import com.yahoo.messagebus.ReplyHandler;
import com.yahoo.messagebus.Result;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
public class DummySessionFactory implements SessionFactory {
public interface ReplyFactory {
Reply createReply(Message m);
}
public final List<Message> messages;
private boolean autoReply = false;
private ReplyFactory autoReplyFactory = null;
private Error autoError;
private int sessionsCreated = 0;
OutputStream output = null;
protected DummySessionFactory() {
messages = new ArrayList<>();
}
public static DummySessionFactory createDefault() {
return new DummySessionFactory();
}
protected DummySessionFactory(boolean autoReply) {
this.autoReply = autoReply;
messages = new ArrayList<>();
}
protected DummySessionFactory(ReplyFactory autoReplyFactory) {
this.autoReply = true;
this.autoReplyFactory = autoReplyFactory;
messages = new ArrayList<>();
}
public static DummySessionFactory createWithAutoReplyFactory(ReplyFactory autoReplyFactory) {
return new DummySessionFactory(autoReplyFactory);
}
protected DummySessionFactory(Error e) {
autoReply = true;
this.autoError = e;
messages = new ArrayList<>();
}
public static DummySessionFactory createWithErrorAutoReply(Error e) {
return new DummySessionFactory(e);
}
public static DummySessionFactory createWithAutoReply() {
return new DummySessionFactory(true);
}
public DummySessionFactory(Error e, OutputStream out) {
messages = null;
autoReply = true;
output = out;
}
public int sessionsCreated() {
return sessionsCreated;
}
void add(Message m) {
if (messages != null) {
messages.add(m);
}
}
@Override
public SendSession createSendSession(ReplyHandler r, Metric metric) {
++sessionsCreated;
if (output != null) {
return new DumpDocuments(output, r, this);
}
if (autoReply) {
return new AutoReplySession(r, autoReplyFactory, autoError, this);
}
return new DummySession(r, this);
}
@Override
public VisitorSession createVisitorSession(VisitorParameters p) {
return null;
}
public void sendReply(Message m, Error error) {
MyContext ctxt = (MyContext) m.getContext();
Reply r = new EmptyReply();
r.setMessage(m);
r.setContext(ctxt.oldContext);
if (error != null) {
r.addError(error);
}
ctxt.handler.handleReply(r);
}
private class MyContext {
MyContext(ReplyHandler handler, Object ctxt) {
this.handler = handler;
this.oldContext = ctxt;
}
ReplyHandler handler;
Object oldContext;
}
private class AutoReplySession extends SendSession {
ReplyHandler handler;
ReplyFactory replyFactory;
Error e;
DummySessionFactory owner;
public AutoReplySession(ReplyHandler handler, ReplyFactory replyFactory,
Error e, DummySessionFactory owner) {
this.handler = handler;
this.replyFactory = replyFactory;
this.e = e;
this.owner = owner;
}
protected void handleMessage(Message m) {
}
@Override
protected Result onSend(Message m, boolean blockIfQueueFull) throws InterruptedException {
owner.add(m);
handleMessage(m);
Reply r;
if (replyFactory == null) {
r = new EmptyReply();
} else {
r = replyFactory.createReply(m);
}
m.setTimeReceivedNow();
r.setMessage(m);
r.setContext(m.getContext());
if (e != null) {
r.addError(e);
}
handler.handleReply(r);
return Result.ACCEPTED;
}
@Override
public void close() {
}
}
private class DumpDocuments extends AutoReplySession {
final OutputStream out;
public DumpDocuments(OutputStream out, ReplyHandler r, DummySessionFactory factory) {
super(r, null, null, factory);
this.out = out;
}
protected void handleMessage(Message m) {
if (m instanceof PutDocumentMessage) {
PutDocumentMessage p = (PutDocumentMessage) m;
Document d = p.getDocumentPut().getDocument();
d.serialize(out);
}
}
}
private class DummySession extends SendSession {
ReplyHandler handler;
DummySessionFactory owner;
public DummySession(ReplyHandler handler, DummySessionFactory owner) {
this.handler = handler;
this.owner = owner;
}
@Override
protected Result onSend(Message m, boolean blockIfQueueFull) throws InterruptedException {
m.setContext(new MyContext(handler, m.getContext()));
owner.add(m);
return Result.ACCEPTED;
}
@Override
public void close() {
}
}
}
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