/*
* Copyright 2012 the original author or authors.
*
* 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.gradle.messaging.remote.internal.hub;
import org.gradle.messaging.remote.internal.Connection;
import org.gradle.messaging.remote.internal.hub.protocol.ConnectionClosed;
import org.gradle.messaging.remote.internal.hub.protocol.ConnectionEstablished;
import org.gradle.messaging.remote.internal.hub.protocol.EndOfStream;
import org.gradle.messaging.remote.internal.hub.protocol.InterHubMessage;
import org.gradle.messaging.remote.internal.hub.queue.EndPointQueue;
import java.util.HashSet;
import java.util.Set;
class ConnectionSet {
private final Set<ConnectionState> connections = new HashSet<ConnectionState>();
private final IncomingQueue incomingQueue;
private final OutgoingQueue outgoingQueue;
private boolean stopping;
ConnectionSet(IncomingQueue incomingQueue, OutgoingQueue outgoingQueue) {
this.incomingQueue = incomingQueue;
this.outgoingQueue = outgoingQueue;
}
public ConnectionState add(Connection<InterHubMessage> connection) {
incomingQueue.queue(new ConnectionEstablished(connection));
EndPointQueue queue = outgoingQueue.newEndpoint();
ConnectionState state = new ConnectionState(this, connection, queue);
connections.add(state);
return state;
}
public void finished(ConnectionState connectionState) {
incomingQueue.queue(new ConnectionClosed(connectionState.getConnection()));
connections.remove(connectionState);
if (stopping) {
maybeStop();
}
}
public void requestStop() {
stopping = true;
maybeStop();
}
private void maybeStop() {
if (connections.isEmpty()) {
outgoingQueue.discardQueued();
incomingQueue.queue(new EndOfStream());
}
}
}