org.springframework.integration.store.MessageGroupMetadata Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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
*
* https://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.store;
import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
import org.springframework.messaging.Message;
import org.springframework.util.Assert;
/**
* Value Object holding metadata about a MessageGroup in the MessageGroupStore.
*
* @author Oleg Zhurakousky
* @author Gary Russell
* @author Artem Bilan
* @author Laszlo Szabo
*
* @since 2.1
*/
public class MessageGroupMetadata implements Serializable {
private static final long serialVersionUID = 1L;
private List messageIds = new LinkedList<>();
private long timestamp;
private volatile boolean complete;
private volatile long lastModified;
private volatile int lastReleasedMessageSequenceNumber;
private MessageGroupMetadata() {
//For Jackson deserialization
}
public MessageGroupMetadata(MessageGroup messageGroup) {
Assert.notNull(messageGroup, "'messageGroup' must not be null");
for (Message message : messageGroup.getMessages()) {
this.messageIds.add(message.getHeaders().getId());
}
this.complete = messageGroup.isComplete();
this.timestamp = messageGroup.getTimestamp();
this.lastReleasedMessageSequenceNumber = messageGroup.getLastReleasedMessageSequenceNumber();
this.lastModified = messageGroup.getLastModified();
}
public void remove(UUID messageId) {
this.messageIds.remove(messageId);
}
public void removeAll(Collection messageIds) {
this.messageIds.removeAll(messageIds);
}
boolean add(UUID messageId) {
return !this.messageIds.contains(messageId) && this.messageIds.add(messageId);
}
void setLastModified(long lastModified) {
this.lastModified = lastModified;
}
public Iterator messageIdIterator() {
return this.messageIds.iterator();
}
public int size() {
return this.messageIds.size();
}
public UUID firstId() {
if (this.messageIds.size() > 0) {
return this.messageIds.get(0);
}
return null;
}
/**
* Obtain a {@link LinkedList} copy of the {@link #messageIds}
* stored in the group.
* @return the list of messages ids stored in the group
*/
public List getMessageIds() {
return new LinkedList(this.messageIds);
}
void complete() {
this.complete = true;
}
public boolean isComplete() {
return this.complete;
}
public long getLastModified() {
return this.lastModified;
}
public long getTimestamp() {
return this.timestamp;
}
public int getLastReleasedMessageSequenceNumber() {
return this.lastReleasedMessageSequenceNumber;
}
void setLastReleasedMessageSequenceNumber(int lastReleasedMessageSequenceNumber) {
this.lastReleasedMessageSequenceNumber = lastReleasedMessageSequenceNumber;
}
}