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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2021 Nordix Foundation.
* ================================================================================
* 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.clamp.controlloop.participant.dcae.main.handler;
import java.io.Closeable;
import java.io.IOException;
import java.time.Instant;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ClElementStatistics;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
import org.onap.policy.clamp.controlloop.participant.dcae.httpclient.ClampHttpClient;
import org.onap.policy.clamp.controlloop.participant.dcae.httpclient.ConsulDcaeHttpClient;
import org.onap.policy.clamp.controlloop.participant.dcae.model.Loop;
import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
import org.onap.policy.common.endpoints.parameters.RestServerParameters;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class handles implementation of controlLoopElement updates.
*/
public class ControlLoopElementHandler implements ControlLoopElementListener, Closeable {
private static final Logger LOGGER = LoggerFactory.getLogger(ControlLoopElementHandler.class);
private final ClampHttpClient clampClient;
private final ConsulDcaeHttpClient consulClient;
private static final String LOOP = "pmsh_loop";
private static final String TEMPLATE = "LOOP_TEMPLATE_k8s_pmsh";
private static final String BLUEPRINT_DEPLOYED = "BLUEPRINT_DEPLOYED";
private static final String MICROSERVICE_INSTALLED_SUCCESSFULLY = "MICROSERVICE_INSTALLED_SUCCESSFULLY";
private static final int CHECK_COUNT = 10;
private static final String BODY_CONSUL =
"{ \"subscription\": { \"subscriptionName\": \"subscriptiona\", \"administrativeState\": \"UNLOCKED\", "
+ "\"fileBasedGP\": 15, \"fileLocation\": \"/pm/pm.xml\", \"nfFilter\": "
+ "{ \"nfNames\": [ \"^pnf1.*\" ], \"modelInvariantIDs\": "
+ "[ \"5845y423-g654-6fju-po78-8n53154532k6\", \"7129e420-d396-4efb-af02-6b83499b12f8\" ], "
+ "\"modelVersionIDs\": [ \"e80a6ae3-cafd-4d24-850d-e14c084a5ca9\" ] }, \"measurementGroups\": "
+ "[ { \"measurementGroup\": { \"measurementTypes\": [ { \"measurementType\": \"countera\" }, "
+ "{ \"measurementType\": \"counterb\" } ], \"managedObjectDNsBasic\": [ { \"DN\": \"dna\" }, "
+ "{ \"DN\": \"dnb\" } ] } }, { \"measurementGroup\": { \"measurementTypes\": "
+ "[ { \"measurementType\": \"counterc\" }, { \"measurementType\": \"counterd\" } ], "
+ "\"managedObjectDNsBasic\": " + "[ { \"DN\": \"dnc\" }, { \"DN\": \"dnd\" } ] } } ] } }";
/**
* Constructor.
*/
public ControlLoopElementHandler(RestServerParameters clampParameters, RestServerParameters consulParameters) {
clampClient = new ClampHttpClient(clampParameters);
consulClient = new ConsulDcaeHttpClient(consulParameters);
}
/**
* Callback method to handle a control loop element state change.
*
* @param controlLoopElementId the ID of the control loop element
* @param currentState the current state of the control loop element
* @param newState the state to which the control loop element is changing to
*/
@Override
public void controlLoopElementStateChange(UUID controlLoopElementId, ControlLoopState currentState,
ControlLoopOrderedState newState) {
switch (newState) {
case UNINITIALISED:
Loop loop = clampClient.getstatus(LOOP);
if (loop != null) {
clampClient.undeploy(LOOP);
DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
.updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.UNINITIALISED);
}
break;
case PASSIVE:
DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
.updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.PASSIVE);
break;
case RUNNING:
DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
.updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.RUNNING);
break;
default:
LOGGER.debug("Unknown orderedstate {}", newState);
break;
}
}
private Loop getStatus() throws PfModelException {
Loop loop = clampClient.getstatus(LOOP);
if (loop == null) {
loop = clampClient.create(LOOP, TEMPLATE);
}
if (loop == null) {
throw new PfModelException(null, "");
}
return loop;
}
private void deploy() throws PfModelException {
if (!consulClient.deploy(BODY_CONSUL)) {
throw new PfModelException(null, "deploy to consul failed");
}
if (!clampClient.deploy(LOOP)) {
throw new PfModelException(null, "deploy failed");
}
}
/**
* Callback method to handle an update on a control loop element.
*
* @param element the information on the control loop element
* @param controlLoopDefinition toscaServiceTemplate
* @throws PfModelException in case of an exception
*/
@Override
public void controlLoopElementUpdate(ControlLoopElement element, ToscaServiceTemplate controlLoopDefinition)
throws PfModelException {
try {
Loop loop = getStatus();
if (BLUEPRINT_DEPLOYED.equals(ClampHttpClient.getStatusCode(loop))) {
deploy();
boolean deployedFlag = false;
for (int i = 0; i < CHECK_COUNT; i++) {
//sleep 10 seconds
TimeUnit.SECONDS.sleep(CHECK_COUNT);
loop = getStatus();
String status = ClampHttpClient.getStatusCode(loop);
if (MICROSERVICE_INSTALLED_SUCCESSFULLY.equals(status)) {
DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
.updateControlLoopElementState(element.getId(), element.getOrderedState(),
ControlLoopState.PASSIVE);
deployedFlag = true;
break;
}
}
if (!deployedFlag) {
LOGGER.warn("DCAE is not deployed properly, ClElement state will be UNINITIALISED2PASSIVE");
DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
.updateControlLoopElementState(element.getId(), element.getOrderedState(),
ControlLoopState.UNINITIALISED2PASSIVE);
}
}
} catch (PfModelException e) {
throw e;
} catch (Exception e) {
throw new PfModelException(null, e.getMessage(), e);
}
}
/**
* Handle controlLoopElement statistics.
*
* @param controlLoopElementId controlloop element id
*/
@Override
public void handleStatistics(UUID controlLoopElementId) {
ControlLoopElement clElement = DcaeHandler.getInstance().getDcaeProvider()
.getIntermediaryApi().getControlLoopElement(controlLoopElementId);
if (clElement != null) {
ClElementStatistics clElementStatistics = new ClElementStatistics();
clElementStatistics.setControlLoopState(clElement.getState());
clElementStatistics.setTimeStamp(Instant.now());
DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
.updateControlLoopElementStatistics(controlLoopElementId, clElementStatistics);
}
}
@Override
public void close() throws IOException {
clampClient.close();
consulClient.close();
}
}
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