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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.pooling.message;
import com.fasterxml.jackson.annotation.JsonIgnore;
import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
import org.onap.policy.drools.pooling.PoolingFeatureException;
/**
* Message to forward an event to another host.
*/
public class Forward extends Message {
/**
* Number of hops (i.e., number of times it's been forwarded) so far.
*/
private int numHops;
/**
* Time, in milliseconds, at which the message was created.
*/
private long createTimeMs;
/**
* Protocol of the receiving topic.
*/
private CommInfrastructure protocol;
/**
* Topic on which the event was received.
*/
private String topic;
/**
* The event pay load that was received on the topic.
*/
private String payload;
/**
* The request id that was extracted from the event.
*/
private String requestId;
/**
* Constructor.
*/
public Forward() {
super();
}
/**
* Constructor.
*
* @param source host on which the message originated
* @param protocol protocol
* @param topic topic
* @param payload the actual event data received on the topic
* @param requestId request id
*/
public Forward(String source, CommInfrastructure protocol, String topic, String payload, String requestId) {
super(source);
this.numHops = 0;
this.createTimeMs = System.currentTimeMillis();
this.protocol = protocol;
this.topic = topic;
this.payload = payload;
this.requestId = requestId;
}
/**
* Increments {@link #numHops}.
*/
public void bumpNumHops() {
++numHops;
}
public int getNumHops() {
return numHops;
}
public void setNumHops(int numHops) {
this.numHops = numHops;
}
public long getCreateTimeMs() {
return createTimeMs;
}
public void setCreateTimeMs(long createTimeMs) {
this.createTimeMs = createTimeMs;
}
public CommInfrastructure getProtocol() {
return protocol;
}
public void setProtocol(CommInfrastructure protocol) {
this.protocol = protocol;
}
public String getTopic() {
return topic;
}
public void setTopic(String topic) {
this.topic = topic;
}
public String getPayload() {
return payload;
}
public void setPayload(String payload) {
this.payload = payload;
}
public String getRequestId() {
return requestId;
}
public void setRequestId(String requestId) {
this.requestId = requestId;
}
@JsonIgnore
public boolean isExpired(long minCreateTimeMs) {
return (createTimeMs < minCreateTimeMs);
}
@Override
@JsonIgnore
public void checkValidity() throws PoolingFeatureException {
super.checkValidity();
if (protocol == null) {
throw new PoolingFeatureException("missing message protocol");
}
if (topic == null || topic.isEmpty()) {
throw new PoolingFeatureException("missing message topic");
}
/*
* Note: an empty pay load is OK, as an empty message could have been
* received on the topic.
*/
if (payload == null) {
throw new PoolingFeatureException("missing message payload");
}
if (requestId == null || requestId.isEmpty()) {
throw new PoolingFeatureException("missing message requestId");
}
if (numHops < 0) {
throw new PoolingFeatureException("invalid message hop count");
}
}
}
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