1 files changed, 71 insertions, 0 deletions
diff --git a/policy-core/src/main/java/org/onap/policy/drools/core/lock/AlwaysFailLock.java b/policy-core/src/main/java/org/onap/policy/drools/core/lock/AlwaysFailLock.java
new file mode 100644
index 00000000..0a4d327b
--- /dev/null
+++ b/policy-core/src/main/java/org/onap/policy/drools/core/lock/AlwaysFailLock.java
@@ -0,0 +1,71 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.core.lock;
+
+
+/**
+ * Lock implementation whose operations always fail.
+ */
+public class AlwaysFailLock extends LockImpl {
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * Constructs the object.
+     */
+    public AlwaysFailLock() {
+        super();
+    }
+
+    /**
+     * Constructs the object.
+     *
+     * @param resourceId identifier of the resource to be locked
+     * @param ownerKey information identifying the owner requesting the lock
+     * @param holdSec amount of time, in seconds, for which the lock should be held once
+     *        it has been granted, after which it will automatically be released
+     * @param callback callback to be invoked once the lock is granted, or subsequently
+     *        lost; must not be {@code null}
+     */
+    public AlwaysFailLock(String resourceId, String ownerKey, int holdSec, LockCallback callback) {
+        super(LockState.UNAVAILABLE, resourceId, ownerKey, holdSec, callback);
+    }
+
+    /**
+     * Always returns false.
+     */
+    @Override
+    public boolean free() {
+        return false;
+    }
+
+    /**
+     * Always fails and invokes {@link LockCallback#lockUnavailable(Lock)}.
+     */
+    @Override
+    public void extend(int holdSec, LockCallback callback) {
+        synchronized (this) {
+            setHoldSec(holdSec);
+            setCallback(callback);
+        }
+
+        notifyUnavailable();
+    }
+}