1 files changed, 104 insertions, 0 deletions
diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/acm/participant/intermediary/handler/AcLockHandler.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/acm/participant/intermediary/handler/AcLockHandler.java
new file mode 100644
index 000000000..ddf465a2d
--- /dev/null
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/acm/participant/intermediary/handler/AcLockHandler.java
@@ -0,0 +1,104 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation.
+ *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.acm.participant.intermediary.handler;
+
+import java.util.UUID;
+import lombok.RequiredArgsConstructor;
+import org.onap.policy.clamp.acm.participant.intermediary.api.InstanceElementDto;
+import org.onap.policy.clamp.models.acm.concepts.AutomationComposition;
+import org.onap.policy.clamp.models.acm.concepts.LockState;
+import org.onap.policy.clamp.models.acm.concepts.ParticipantUtils;
+import org.onap.policy.clamp.models.acm.messages.kafka.participant.AutomationCompositionStateChange;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class AcLockHandler {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(AcLockHandler.class);
+
+    private final CacheProvider cacheProvider;
+    private final ThreadHandler listener;
+
+    /**
+     * Handle a automation composition state change message.
+     *
+     * @param stateChangeMsg the state change message
+     */
+    public void handleAutomationCompositionStateChange(AutomationCompositionStateChange stateChangeMsg) {
+        if (stateChangeMsg.getAutomationCompositionId() == null) {
+            return;
+        }
+
+        var automationComposition = cacheProvider.getAutomationComposition(stateChangeMsg.getAutomationCompositionId());
+
+        if (automationComposition == null) {
+            LOGGER.debug("Automation composition {} does not use this participant",
+                    stateChangeMsg.getAutomationCompositionId());
+            return;
+        }
+
+        switch (stateChangeMsg.getLockOrderedState()) {
+            case LOCK -> handleLockState(stateChangeMsg.getMessageId(), automationComposition,
+                    stateChangeMsg.getStartPhase());
+            case UNLOCK -> handleUnlockState(stateChangeMsg.getMessageId(), automationComposition,
+                    stateChangeMsg.getStartPhase());
+            default -> LOGGER.error("StateChange message has no lock order {}", automationComposition.getKey());
+        }
+    }
+
+    private void handleLockState(UUID messageId, final AutomationComposition automationComposition,
+                                 Integer startPhaseMsg) {
+        for (var element : automationComposition.getElements().values()) {
+            var compositionInProperties = cacheProvider
+                    .getCommonProperties(automationComposition.getCompositionId(), element.getDefinition());
+            int startPhase = ParticipantUtils.findStartPhase(compositionInProperties);
+            if (startPhaseMsg.equals(startPhase)) {
+                element.setLockState(LockState.LOCKING);
+                var compositionElement = cacheProvider.createCompositionElementDto(
+                        automationComposition.getCompositionId(), element, compositionInProperties);
+                var instanceElement = new InstanceElementDto(automationComposition.getInstanceId(), element.getId(),
+                        null, element.getProperties(), element.getOutProperties());
+                listener.lock(messageId, compositionElement, instanceElement);
+            }
+        }
+    }
+
+    private void handleUnlockState(UUID messageId, final AutomationComposition automationComposition,
+                                   Integer startPhaseMsg) {
+        for (var element : automationComposition.getElements().values()) {
+            var compositionInProperties = cacheProvider
+                    .getCommonProperties(automationComposition.getCompositionId(), element.getDefinition());
+            int startPhase = ParticipantUtils.findStartPhase(compositionInProperties);
+            if (startPhaseMsg.equals(startPhase)) {
+                element.setLockState(LockState.UNLOCKING);
+                var compositionElement = cacheProvider.createCompositionElementDto(
+                        automationComposition.getCompositionId(), element, compositionInProperties);
+                var instanceElement = new InstanceElementDto(automationComposition.getInstanceId(), element.getId(),
+                        null, element.getProperties(), element.getOutProperties());
+                listener.unlock(messageId, compositionElement, instanceElement);
+            }
+        }
+    }
+}