/*
* Copyright 2016 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.springframework.integration.dsl.channel;
import java.util.Queue;
import java.util.concurrent.locks.Lock;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.integration.store.ChannelMessageStore;
import org.springframework.integration.store.MessageGroupQueue;
import org.springframework.integration.store.PriorityCapableChannelMessageStore;
import org.springframework.messaging.Message;
/**
* @author Artem Bilan
*
* @since 5.0
*/
public class QueueChannelSpec extends MessageChannelSpec<QueueChannelSpec, QueueChannel> {
protected Queue<Message<?>> queue;
protected Integer capacity;
QueueChannelSpec() {
super();
}
QueueChannelSpec(Queue<Message<?>> queue) {
this.queue = queue;
}
QueueChannelSpec(Integer capacity) {
this.capacity = capacity;
}
@Override
protected QueueChannel doGet() {
if (this.queue != null) {
this.channel = new QueueChannel(this.queue);
}
else if (this.capacity != null) {
this.channel = new QueueChannel(this.capacity);
}
else {
this.channel = new QueueChannel();
}
return super.doGet();
}
/**
* The {@link ChannelMessageStore}-specific {@link QueueChannelSpec} extension.
*/
public static class MessageStoreSpec extends QueueChannelSpec {
private final ChannelMessageStore messageGroupStore;
private final Object groupId;
private Lock storeLock;
MessageStoreSpec(ChannelMessageStore messageGroupStore, Object groupId) {
super();
this.messageGroupStore = messageGroupStore;
this.groupId = groupId;
}
@Override
protected MessageStoreSpec id(String id) {
return (MessageStoreSpec) super.id(id);
}
public MessageStoreSpec capacity(Integer capacity) {
this.capacity = capacity;
return this;
}
public MessageStoreSpec storeLock(Lock storeLock) {
this.storeLock = storeLock;
return this;
}
@Override
protected QueueChannel doGet() {
if (this.capacity != null) {
if (this.storeLock != null) {
this.queue = new MessageGroupQueue(this.messageGroupStore, this.groupId, this.capacity,
this.storeLock);
}
else {
this.queue = new MessageGroupQueue(this.messageGroupStore, this.groupId, this.capacity);
}
}
else if (this.storeLock != null) {
this.queue = new MessageGroupQueue(this.messageGroupStore, this.groupId, this.storeLock);
}
else {
this.queue = new MessageGroupQueue(this.messageGroupStore, this.groupId);
}
((MessageGroupQueue) this.queue).setPriority(
this.messageGroupStore instanceof PriorityCapableChannelMessageStore);
return super.doGet();
}
}
}