/*
* Copyright 2012 Matt Corallo.
*
* Licensed 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
*
* http://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.bitcoinj.testing;
import com.google.common.base.*;
import com.google.common.util.concurrent.*;
import org.bitcoinj.core.*;
import org.bitcoinj.net.*;
import org.bitcoinj.store.*;
import org.bitcoinj.utils.*;
import java.net.*;
import java.util.concurrent.*;
import static com.google.common.base.Preconditions.*;
/**
* You can derive from this class and call peerGroup.start() in your tests to get a functional PeerGroup that can be
* used with loopback peers created using connectPeer. This involves real TCP connections so is a pretty accurate
* mock, but means unit tests cannot be run simultaneously.
*/
public class TestWithPeerGroup extends TestWithNetworkConnections {
protected PeerGroup peerGroup;
protected VersionMessage remoteVersionMessage;
private final ClientType clientType;
public TestWithPeerGroup(ClientType clientType) {
super(clientType);
if (clientType != ClientType.NIO_CLIENT_MANAGER && clientType != ClientType.BLOCKING_CLIENT_MANAGER)
throw new RuntimeException();
this.clientType = clientType;
}
@Override
public void setUp() throws Exception {
setUp(new MemoryBlockStore(PARAMS));
}
@Override
public void setUp(BlockStore blockStore) throws Exception {
super.setUp(blockStore);
remoteVersionMessage = new VersionMessage(PARAMS, 1);
remoteVersionMessage.localServices = VersionMessage.NODE_NETWORK;
remoteVersionMessage.clientVersion = NotFoundMessage.MIN_PROTOCOL_VERSION;
blockJobs = false;
initPeerGroup();
}
@Override
public void tearDown() {
try {
super.tearDown();
blockJobs = false;
Utils.finishMockSleep();
if (peerGroup.isRunning())
peerGroup.stopAsync();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
protected void initPeerGroup() {
if (clientType == ClientType.NIO_CLIENT_MANAGER)
peerGroup = createPeerGroup(new NioClientManager());
else
peerGroup = createPeerGroup(new BlockingClientManager());
peerGroup.setPingIntervalMsec(0); // Disable the pings as they just get in the way of most tests.
peerGroup.addWallet(wallet);
peerGroup.setUseLocalhostPeerWhenPossible(false); // Prevents from connecting to bitcoin nodes on localhost.
}
protected boolean blockJobs = false;
protected final Semaphore jobBlocks = new Semaphore(0);
private PeerGroup createPeerGroup(final ClientConnectionManager manager) {
return new PeerGroup(PARAMS, blockChain, manager) {
@Override
protected ListeningScheduledExecutorService createPrivateExecutor() {
return MoreExecutors.listeningDecorator(new ScheduledThreadPoolExecutor(1, new ContextPropagatingThreadFactory("PeerGroup test thread")) {
@Override
public ScheduledFuture<?> schedule(final Runnable command, final long delay, final TimeUnit unit) {
if (!blockJobs)
return super.schedule(command, delay, unit);
return super.schedule(new Runnable() {
@Override
public void run() {
Utils.rollMockClockMillis(unit.toMillis(delay));
command.run();
jobBlocks.acquireUninterruptibly();
}
}, 0 /* immediate */, unit);
}
});
}
};
}
protected InboundMessageQueuer connectPeerWithoutVersionExchange(int id) throws Exception {
Preconditions.checkArgument(id < PEER_SERVERS);
InetSocketAddress remoteAddress = new InetSocketAddress("127.0.0.1", 2000 + id);
Peer peer = peerGroup.connectTo(remoteAddress).getConnectionOpenFuture().get();
InboundMessageQueuer writeTarget = newPeerWriteTargetQueue.take();
writeTarget.peer = peer;
return writeTarget;
}
protected InboundMessageQueuer connectPeer(int id) throws Exception {
return connectPeer(id, remoteVersionMessage);
}
protected InboundMessageQueuer connectPeer(int id, VersionMessage versionMessage) throws Exception {
checkArgument(versionMessage.hasBlockChain());
InboundMessageQueuer writeTarget = connectPeerWithoutVersionExchange(id);
// Complete handshake with the peer - send/receive version(ack)s, receive bloom filter
writeTarget.sendMessage(versionMessage);
writeTarget.sendMessage(new VersionAck());
stepThroughInit(versionMessage, writeTarget);
return writeTarget;
}
// handle peer discovered by PeerGroup
protected InboundMessageQueuer handleConnectToPeer(int id) throws Exception {
return handleConnectToPeer(id, remoteVersionMessage);
}
// handle peer discovered by PeerGroup
protected InboundMessageQueuer handleConnectToPeer(int id, VersionMessage versionMessage) throws Exception {
InboundMessageQueuer writeTarget = newPeerWriteTargetQueue.take();
checkArgument(versionMessage.hasBlockChain());
// Complete handshake with the peer - send/receive version(ack)s, receive bloom filter
writeTarget.sendMessage(versionMessage);
writeTarget.sendMessage(new VersionAck());
stepThroughInit(versionMessage, writeTarget);
return writeTarget;
}
private void stepThroughInit(VersionMessage versionMessage, InboundMessageQueuer writeTarget) throws InterruptedException {
checkState(writeTarget.nextMessageBlocking() instanceof VersionMessage);
checkState(writeTarget.nextMessageBlocking() instanceof VersionAck);
if (versionMessage.isBloomFilteringSupported()) {
checkState(writeTarget.nextMessageBlocking() instanceof BloomFilter);
checkState(writeTarget.nextMessageBlocking() instanceof MemoryPoolMessage);
}
}
}