1 files changed, 197 insertions, 0 deletions
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java
new file mode 100644
index 000000000..96677f320
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java
@@ -0,0 +1,197 @@
+/*-
+ * ============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();
+    }
+}