1 files changed, 133 insertions, 0 deletions
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeProvider.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeProvider.java
new file mode 100644
index 000000000..afaf1c754
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeProvider.java
@@ -0,0 +1,133 @@
+/*-
+ * ============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.util.List;
+import java.util.Map;
+import java.util.UUID;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoops;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.Participant;
+import org.onap.policy.clamp.controlloop.models.messages.rest.TypedSimpleResponse;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryFactory;
+
+/**
+ * This provider class dcae of participants and control loop elements.
+ */
+public class DcaeProvider implements Closeable {
+    @Getter
+    private final ParticipantIntermediaryApi intermediaryApi;
+
+    private final ControlLoopElementHandler clElementHandler;
+
+    /**
+     * Create a participant dcae provider.
+     *
+     * @throws ControlLoopRuntimeException on errors creating the provider
+     */
+    public DcaeProvider(ParticipantDcaeParameters parameters) throws ControlLoopRuntimeException {
+        intermediaryApi = new ParticipantIntermediaryFactory().createApiImplementation();
+        intermediaryApi.init(parameters.getIntermediaryParameters());
+        clElementHandler = new ControlLoopElementHandler(parameters.getClampClientParameters(),
+                parameters.getConsulClientParameters());
+        intermediaryApi.registerControlLoopElementListener(clElementHandler);
+    }
+
+    @Override
+    public void close() throws IOException {
+        intermediaryApi.close();
+        clElementHandler.close();
+    }
+
+    /**
+     * Get the control loops.
+     *
+     * @param name the controlLoop, null to get all
+     * @param version the controlLoop, null to get all
+     * @return the control loops
+     * @throws ControlLoopException on errors getting the control loops
+     */
+    public ControlLoops getControlLoops(String name, String version) throws ControlLoopException {
+        return intermediaryApi.getControlLoops(name, version);
+    }
+
+    /**
+     * Get the dcae control loop elements.
+     *
+     * @param name the controlLoopElement, null to get all
+     * @param version the controlLoopElement, null to get all
+     * @return the control loop elements
+     * @throws ControlLoopException on errors getting the control loop elements
+     */
+    public Map<UUID, ControlLoopElement> getControlLoopElements(String name, String version)
+            throws ControlLoopException {
+        return intermediaryApi.getControlLoopElements(name, version);
+    }
+
+    /**
+     * Update the given control loop element in the dcae.
+     *
+     * @param element the control loop element to update
+     * @return response simple response returned
+     * @throws ControlLoopException on errors updating the control loop element
+     */
+    public TypedSimpleResponse<ControlLoopElement> updateControlLoopElement(ControlLoopElement element)
+            throws ControlLoopException {
+        TypedSimpleResponse<ControlLoopElement> response = new TypedSimpleResponse<>();
+        response.setResponse(intermediaryApi.updateControlLoopElementState(element.getId(),
+                element.getOrderedState(), element.getState()));
+        return response;
+    }
+
+    /**
+     * Get the current dcae participants.
+     *
+     * @param name the participant, null to get all
+     * @param version the participant, null to get all
+     * @return the list of participants
+     * @throws ControlLoopException on errors getting the participants
+     */
+    public List<Participant> getParticipants(String name, String version) throws ControlLoopException {
+        return intermediaryApi.getParticipants(name, version);
+    }
+
+    /**
+     * Update a dcae participant.
+     *
+     * @param participant the participant to update
+     * @return TypedSimpleResponse simple response
+     * @throws ControlLoopException on errors updating the participant
+     */
+
+    public TypedSimpleResponse<Participant> updateParticipant(Participant participant) throws ControlLoopException {
+        TypedSimpleResponse<Participant> response = new TypedSimpleResponse<>();
+        response.setResponse(
+                intermediaryApi.updateParticipantState(participant.getDefinition(), participant.getParticipantState()));
+        return response;
+    }
+}