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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2018 Ericsson. All rights reserved.
* Modifications Copyright (C) 2019-2020 Nordix Foundation.
* Modifications Copyright (C) 2021 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.domains.onap.vcpe;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import java.time.Instant;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.BlockingQueue;
import org.onap.policy.appclcm.AppcLcmBody;
import org.onap.policy.appclcm.AppcLcmDmaapWrapper;
import org.onap.policy.appclcm.AppcLcmInput;
import org.onap.policy.appclcm.AppcLcmOutput;
import org.onap.policy.common.gson.InstantAsMillisTypeAdapter;
/**
* Respond to an APPC request with a given delay.
*/
public class AppcResponseCreator {
// The request from APPC
private final String jsonRequestString;
// The queue for APPC responses
private final BlockingQueue<String> appcResponseQueue;
// The timer task for response generation
private final Timer appcTimer;
private static final Gson gson = new GsonBuilder()
.registerTypeAdapter(Instant.class, new InstantAsMillisTypeAdapter()).setPrettyPrinting().create();
private static Integer nextResponseCode = 400;
/**
* Respond to the given APPC request after the given amount of milliseconds.
*
* @param appcResponseQueue the queue into which to put the APPC response
* @param jsonRequestString the request JSON string
* @param milliSecondsToWait the number of milliseconds to wait
*/
public AppcResponseCreator(BlockingQueue<String> appcResponseQueue, String jsonRequestString,
long milliSecondsToWait) {
this.jsonRequestString = jsonRequestString;
this.appcResponseQueue = appcResponseQueue;
appcTimer = new Timer();
appcTimer.schedule(new AppcTimerTask(), milliSecondsToWait);
}
private class AppcTimerTask extends TimerTask {
/**
* {@inheritDoc}.
*/
@Override
public void run() {
AppcLcmDmaapWrapper requestWrapper = null;
requestWrapper = gson.fromJson(jsonRequestString, AppcLcmDmaapWrapper.class);
AppcLcmInput request = requestWrapper.getBody().getInput();
AppcLcmOutput response = new AppcLcmOutput(request);
response.getStatus().setCode(nextResponseCode);
if (nextResponseCode == 400) {
response.getStatus().setMessage("Restart Successful");
nextResponseCode = 100;
} else if (nextResponseCode == 100) {
response.getStatus().setMessage("Restart Request Accepted");
nextResponseCode = 200;
} else {
response.getStatus().setMessage("Error in Restart Operation");
nextResponseCode = 400;
}
response.setPayload("");
AppcLcmDmaapWrapper responseWrapper = new AppcLcmDmaapWrapper();
responseWrapper.setBody(new AppcLcmBody());
responseWrapper.getBody().setOutput(response);
responseWrapper.setVersion(requestWrapper.getVersion());
responseWrapper.setRpcName(requestWrapper.getRpcName());
responseWrapper.setCorrelationId(requestWrapper.getCorrelationId());
responseWrapper.setType(requestWrapper.getType());
appcResponseQueue.add(gson.toJson(responseWrapper));
}
}
}
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