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Message.java
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Message.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.jclouds.openstack.marconi.v1.domain;
import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import org.jclouds.javax.annotation.Nullable;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* A message to be sent to a queue.
*/
public class Message {
private final String id;
private final int ttl;
private final String body;
private final int age;
private final String claimId;
protected Message(String id, int ttl, String body, int age, @Nullable String claimId) {
this.id = checkNotNull(id, "id required");
this.ttl = ttl;
this.body = checkNotNull(body, "body required");
this.age = age;
this.claimId = claimId;
}
/**
* @return The id of this message.
*/
public String getId() {
return id;
}
/**
* @see CreateMessage.Builder#ttl(int)
*/
public int getTTL() {
return ttl;
}
/**
* @see CreateMessage.Builder#body(String)
*/
public String getBody() {
return body;
}
/**
* @return Age of this message in seconds.
*/
public int getAge() {
return age;
}
/**
* @return The claim id of this message.
*/
public Optional<String> getClaimId() {
return Optional.fromNullable(claimId);
}
@Override
public int hashCode() {
return Objects.hashCode(id);
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null || getClass() != obj.getClass()) return false;
Message that = Message.class.cast(obj);
return Objects.equal(this.id, that.id);
}
protected MoreObjects.ToStringHelper string() {
return MoreObjects.toStringHelper(this).omitNullValues()
.add("id", id).add("ttl", ttl).add("body", body).add("age", age).add("claimId", claimId);
}
@Override
public String toString() {
return string().toString();
}
public static Builder builder() {
return new ConcreteBuilder();
}
public Builder toBuilder() {
return new ConcreteBuilder().fromMessage(this);
}
public abstract static class Builder {
protected abstract Builder self();
protected String id;
protected int ttl;
protected String body;
protected int age;
protected String claimId;
/**
* @see Message#getId()
*/
public Builder id(String id) {
this.id = id;
return self();
}
/**
* @see CreateMessage.Builder#ttl(int)
*/
public Builder ttl(int ttl) {
this.ttl = ttl;
return self();
}
/**
* @see CreateMessage.Builder#body(String)
*/
public Builder body(String json) {
this.body = json;
return self();
}
/**
* @see Message#getAge()
*/
public Builder age(int age) {
this.age = age;
return self();
}
/**
* @see Message#getClaimId()
*/
public Builder claimId(String claimId) {
this.claimId = claimId;
return self();
}
public Message build() {
return new Message(id, ttl, body, age, claimId);
}
public Builder fromMessage(Message in) {
return this.id(in.getId()).ttl(in.getTTL()).body(in.getBody()).age(in.getAge())
.claimId(in.getClaimId().orNull());
}
}
private static class ConcreteBuilder extends Builder {
@Override
protected ConcreteBuilder self() {
return this;
}
}
}