1 files changed, 152 insertions, 0 deletions
diff --git a/services/services-onappf/src/main/java/org/onap/policy/apex/services/onappf/handler/PdpMessageHandler.java b/services/services-onappf/src/main/java/org/onap/policy/apex/services/onappf/handler/PdpMessageHandler.java
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index 000000000..e3f0c04a1
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+++ b/services/services-onappf/src/main/java/org/onap/policy/apex/services/onappf/handler/PdpMessageHandler.java
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+/*-
+ * ============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.services.onappf.handler;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.onap.policy.apex.services.onappf.ApexStarterConstants;
+import org.onap.policy.apex.services.onappf.parameters.PdpStatusParameters;
+import org.onap.policy.apex.services.onappf.parameters.ToscaPolicyTypeIdentifierParameters;
+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.enums.PdpHealthStatus;
+import org.onap.policy.models.pdp.enums.PdpResponseStatus;
+import org.onap.policy.models.pdp.enums.PdpState;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyIdentifier;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifier;
+
+/**
+ * This class supports the handling of pdp messages.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpMessageHandler {
+
+    /**
+     * Method to create PdpStatus message from the parameters which will be saved to the context
+     *
+     * @param instanceId instance id of apex pdp
+     * @param pdpStatusParameters pdp status parameters read from the configuration file
+     *
+     * @return PdpStatus the pdp status message
+     */
+    public PdpStatus createPdpStatusFromParameters(final String instanceId,
+            final PdpStatusParameters pdpStatusParameters) {
+        final PdpStatus pdpStatus = new PdpStatus();
+        pdpStatus.setPdpType(pdpStatusParameters.getPdpType());
+        pdpStatus.setState(PdpState.PASSIVE);
+        pdpStatus.setHealthy(PdpHealthStatus.HEALTHY);
+        pdpStatus.setDescription(pdpStatusParameters.getDescription());
+        pdpStatus.setName(instanceId);
+        pdpStatus.setSupportedPolicyTypes(getSupportedPolicyTypesFromParameters(pdpStatusParameters));
+        return pdpStatus;
+    }
+
+    /**
+     * Method to get supported policy types from the parameters.
+     *
+     * @param pdpStatusParameters
+     * @return list of PolicyTypeIdent
+     */
+    private List<ToscaPolicyTypeIdentifier> getSupportedPolicyTypesFromParameters(
+            final PdpStatusParameters pdpStatusParameters) {
+        final List<ToscaPolicyTypeIdentifier> supportedPolicyTypes =
+                new ArrayList<>(pdpStatusParameters.getSupportedPolicyTypes().size());
+        for (final ToscaPolicyTypeIdentifierParameters policyTypeIdentParameters : pdpStatusParameters
+                .getSupportedPolicyTypes()) {
+            supportedPolicyTypes.add(new ToscaPolicyTypeIdentifier(policyTypeIdentParameters.getName(),
+                    policyTypeIdentParameters.getVersion()));
+        }
+        return supportedPolicyTypes;
+    }
+
+    /**
+     * Method to create PdpStatus message from the context, which is to be sent by apex-pdp to pap.
+     *
+     * @return PdpStatus the pdp status message
+     */
+    public PdpStatus createPdpStatusFromContext() {
+        final PdpStatus pdpStatusContext = Registry.get(ApexStarterConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class);
+        final PdpStatus pdpStatus = new PdpStatus();
+        pdpStatus.setName(pdpStatusContext.getName());
+        pdpStatus.setPdpType(pdpStatusContext.getPdpType());
+        pdpStatus.setState(pdpStatusContext.getState());
+        pdpStatus.setHealthy(pdpStatusContext.getHealthy());
+        pdpStatus.setDescription(pdpStatusContext.getDescription());
+        pdpStatus.setSupportedPolicyTypes(pdpStatusContext.getSupportedPolicyTypes());
+        pdpStatus.setPolicies(pdpStatusContext.getPolicies());
+        pdpStatus.setPdpGroup(pdpStatusContext.getPdpGroup());
+        pdpStatus.setPdpSubgroup(pdpStatusContext.getPdpSubgroup());
+        return pdpStatus;
+    }
+
+    /**
+     * Method to get a final pdp status when the apex started is shutting down.
+     *
+     * @param policies list of ToscaPolicy
+     *
+     * @return PdpStatus
+     */
+    public PdpStatus getTerminatedPdpStatus() {
+        final PdpStatus pdpStatusInContext = Registry.get(ApexStarterConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class);
+        pdpStatusInContext.setState(PdpState.TERMINATED);
+        pdpStatusInContext.setDescription("Apex pdp shutting down.");
+        return createPdpStatusFromContext();
+    }
+
+    /**
+     * Method create PdpResponseDetails which will be sent as part of pdp status to PAP.
+     *
+     * @param requestId request id of the PdpUpdate message from pap
+     * @param status response status to be sent back
+     * @param responseMessage response message to be sent back
+     *
+     * @return PdpResponseDetails
+     */
+    public PdpResponseDetails createPdpResonseDetails(final String requestId, final PdpResponseStatus status,
+            final String responseMessage) {
+        final PdpResponseDetails pdpResponseDetails = new PdpResponseDetails();
+        pdpResponseDetails.setResponseTo(requestId);
+        pdpResponseDetails.setResponseStatus(status);
+        pdpResponseDetails.setResponseMessage(responseMessage);
+        return pdpResponseDetails;
+    }
+
+    /**
+     * Method to retrieve list of ToscaPolicyIdentifier from the list of ToscaPolicy.
+     *
+     * @param policies list of ToscaPolicy
+     *
+     * @return policyTypeIdentifiers
+     */
+    public List<ToscaPolicyIdentifier> getToscaPolicyIdentifiers(final List<ToscaPolicy> policies) {
+        final List<ToscaPolicyIdentifier> policyIdentifiers = new ArrayList<>(policies.size());
+        for (final ToscaPolicy policy : policies) {
+            if (null != policy.getName() && null != policy.getVersion()) {
+                policyIdentifiers.add(new ToscaPolicyIdentifier(policy.getName(), policy.getVersion()));
+            }
+        }
+        return policyIdentifiers;
+    }
+}