1 files changed, 75 insertions, 0 deletions
diff --git a/controlloop/common/controller-usecases/src/main/java/org/onap/policy/drools/apps/controller/usecases/LockOperation2.java b/controlloop/common/controller-usecases/src/main/java/org/onap/policy/drools/apps/controller/usecases/LockOperation2.java
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index 000000000..f5b03d2f5
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+++ b/controlloop/common/controller-usecases/src/main/java/org/onap/policy/drools/apps/controller/usecases/LockOperation2.java
@@ -0,0 +1,75 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.apps.controller.usecases;
+
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import lombok.Getter;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.OperationProperties;
+import org.onap.policy.controlloop.actorserviceprovider.impl.OperationPartial;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
+import org.onap.policy.controlloop.eventmanager.StepContext;
+
+/**
+ * A LOCK operation for a particular target entity. This is a "pseudo" operation; it is
+ * not found within an ActorService, but is created directly.
+ */
+public class LockOperation2 extends OperationPartial {
+
+    private final StepContext stepContext;
+
+    private static final List<String> PROPERTY_NAMES = List.of(OperationProperties.AAI_TARGET_ENTITY);
+
+    /**
+     * Set when {@link #setProperty(String, Object)} is invoked.
+     */
+    @Getter
+    private String targetEntity;
+
+
+    /**
+     * Constructs the lock operation as a preprocessing step for a policy's operation.
+     *
+     * @param stepContext the context to use to request the lock
+     * @param params operation's parameters
+     */
+    public LockOperation2(StepContext stepContext, ControlLoopOperationParams params) {
+        super(params, null, PROPERTY_NAMES);
+        this.stepContext = stepContext;
+    }
+
+    @Override
+    public CompletableFuture<OperationOutcome> start() {
+        if (targetEntity == null) {
+            throw new IllegalStateException("target lock entity has not been determined yet");
+        }
+
+        return stepContext.requestLock(targetEntity);
+    }
+
+    @Override
+    public void setProperty(String name, Object value) {
+        if (OperationProperties.AAI_TARGET_ENTITY.equals(name) && value != null) {
+            targetEntity = value.toString();
+        }
+    }
+}