diff options
Diffstat (limited to 'services/services-onappf/src/main/java/org/onap/policy/apex/starter/handler/PdpUpdateMessageHandler.java')
-rw-r--r-- | services/services-onappf/src/main/java/org/onap/policy/apex/starter/handler/PdpUpdateMessageHandler.java | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/services/services-onappf/src/main/java/org/onap/policy/apex/starter/handler/PdpUpdateMessageHandler.java b/services/services-onappf/src/main/java/org/onap/policy/apex/starter/handler/PdpUpdateMessageHandler.java new file mode 100644 index 000000000..835c2993a --- /dev/null +++ b/services/services-onappf/src/main/java/org/onap/policy/apex/starter/handler/PdpUpdateMessageHandler.java @@ -0,0 +1,125 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 2019 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.apex.starter.handler; + +import java.util.List; + +import org.onap.policy.apex.starter.ApexStarterConstants; +import org.onap.policy.apex.starter.comm.PdpStatusPublisher; +import org.onap.policy.apex.starter.engine.ApexEngineHandler; +import org.onap.policy.apex.starter.exception.ApexStarterException; +import org.onap.policy.common.endpoints.event.comm.TopicSink; +import org.onap.policy.common.utils.services.Registry; +import org.onap.policy.models.pdp.concepts.PdpResponseDetails; +import org.onap.policy.models.pdp.concepts.PdpStatus; +import org.onap.policy.models.pdp.concepts.PdpUpdate; +import org.onap.policy.models.pdp.enums.PdpResponseStatus; + +/** + * This class supports the handling of pdp update messages. + * + * @author Ajith Sreekumar (ajith.sreekumar@est.tech) + */ +public class PdpUpdateMessageHandler { + + + /** + * Method which handles a pdp update event from PAP. + * + * @param pdpUpdateMsg pdp update message + */ + public void handlePdpUpdateEvent(final PdpUpdate pdpUpdateMsg) { + final PdpMessageHandler pdpMessageHandler = new PdpMessageHandler(); + final PdpStatus pdpStatusContext = Registry.get(ApexStarterConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class); + PdpResponseDetails pdpResponseDetails; + if (pdpStatusContext.getName().equals(pdpUpdateMsg.getName())) { + final PdpStatusPublisher pdpStatusPublisher = Registry.get(ApexStarterConstants.REG_PDP_STATUS_PUBLISHER); + if (checkIfAlreadyHandled(pdpUpdateMsg, pdpStatusContext, pdpStatusPublisher.getInterval())) { + pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpUpdateMsg.getRequestId(), + PdpResponseStatus.SUCCESS, "Pdp already updated"); + } else { + if (null != pdpUpdateMsg.getPdpHeartbeatIntervalMs() && pdpUpdateMsg.getPdpHeartbeatIntervalMs() > 0 + && pdpStatusPublisher.getInterval() != pdpUpdateMsg.getPdpHeartbeatIntervalMs()) { + updateInterval(pdpUpdateMsg.getPdpHeartbeatIntervalMs()); + } + pdpStatusContext.setPdpGroup(pdpUpdateMsg.getPdpGroup()); + pdpStatusContext.setPdpSubgroup(pdpUpdateMsg.getPdpSubgroup()); + pdpStatusContext + .setPolicies(new PdpMessageHandler().getToscaPolicyIdentifiers(pdpUpdateMsg.getPolicies())); + if (pdpUpdateMsg.getPolicies().isEmpty()) { + final ApexEngineHandler apexEngineHandler = + Registry.get(ApexStarterConstants.REG_APEX_ENGINE_HANDLER); + if (apexEngineHandler.isApexEngineRunning()) { + try { + apexEngineHandler.shutdown(); + } catch (final ApexStarterException e) { + pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpUpdateMsg.getRequestId(), + PdpResponseStatus.FAIL, + "Pdp update failed as the policies couldn't be undeployed."); + } + } + } + Registry.registerOrReplace(ApexStarterConstants.REG_APEX_TOSCA_POLICY_LIST, pdpUpdateMsg.getPolicies()); + pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpUpdateMsg.getRequestId(), + PdpResponseStatus.SUCCESS, "Pdp update successful."); + } + final PdpStatusPublisher pdpStatusPublisherTemp = + Registry.get(ApexStarterConstants.REG_PDP_STATUS_PUBLISHER); + final PdpStatus pdpStatus = pdpMessageHandler.createPdpStatusFromContext(); + pdpStatus.setResponse(pdpResponseDetails); + pdpStatusPublisherTemp.send(pdpStatus); + } + } + + /** + * Method checks of the Pdp update message is already handled by checking the values in the context. + * + * @param pdpUpdateMsg pdp update message received from pap + * @param pdpStatusContext values saved in context memory + * @param interval the current interval in which the pdp status publisher is sending the heartbeats + * @return boolean flag which tells if the information is same or not + */ + private boolean checkIfAlreadyHandled(final PdpUpdate pdpUpdateMsg, final PdpStatus pdpStatusContext, + final long interval) { + return null != pdpStatusContext.getPdpGroup() + && pdpStatusContext.getPdpGroup().equals(pdpUpdateMsg.getPdpGroup()) + && null != pdpStatusContext.getPdpSubgroup() + && pdpStatusContext.getPdpSubgroup().equals(pdpUpdateMsg.getPdpSubgroup()) + && null != pdpStatusContext.getPolicies() + && pdpStatusContext.getPolicies() + .containsAll(new PdpMessageHandler().getToscaPolicyIdentifiers(pdpUpdateMsg.getPolicies())) + && null != pdpUpdateMsg.getPdpHeartbeatIntervalMs() && pdpUpdateMsg.getPdpHeartbeatIntervalMs() > 0 + && interval == pdpUpdateMsg.getPdpHeartbeatIntervalMs(); + } + + /** + * Method to update the time interval used by the timer task. + * + * @param interval time interval received in the pdp update message from pap + */ + public void updateInterval(final long interval) { + final PdpStatusPublisher pdpStatusPublisher = Registry.get(ApexStarterConstants.REG_PDP_STATUS_PUBLISHER); + pdpStatusPublisher.terminate(); + final List<TopicSink> topicSinks = Registry.get(ApexStarterConstants.REG_APEX_PDP_TOPIC_SINKS); + Registry.registerOrReplace(ApexStarterConstants.REG_PDP_STATUS_PUBLISHER, + new PdpStatusPublisher(topicSinks, interval)); + } +} |