1 files changed, 98 insertions, 0 deletions
diff --git a/utils-test/src/main/java/org/onap/policy/common/utils/time/PseudoScheduledFuture.java b/utils-test/src/main/java/org/onap/policy/common/utils/time/PseudoScheduledFuture.java
new file mode 100644
index 00000000..6ce7bc04
--- /dev/null
+++ b/utils-test/src/main/java/org/onap/policy/common/utils/time/PseudoScheduledFuture.java
@@ -0,0 +1,98 @@
+/*
+ * ============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.common.utils.time;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.Delayed;
+import java.util.concurrent.FutureTask;
+import java.util.concurrent.RunnableScheduledFuture;
+import java.util.concurrent.TimeUnit;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.Setter;
+
+/**
+ * Scheduled future that gets its time from an associated work item.
+ *
+ * @param <T> type of result returned by the future
+ */
+class PseudoScheduledFuture<T> extends FutureTask<T> implements RunnableScheduledFuture<T> {
+
+    /**
+     * {@code True} if this task is periodic, {@code false} otherwise.
+     */
+    private final boolean periodic;
+
+    /**
+     * The work item with which this is associated.
+     */
+    @Getter(AccessLevel.PROTECTED)
+    @Setter(AccessLevel.PROTECTED)
+    private WorkItem workItem;
+
+    /**
+     * Constructs the object.
+     *
+     * @param runnable action to be executed
+     * @param result value to be returned by the {@link #get()} operation
+     * @param periodic {@code true} if this task is periodic, {@code false} otherwise
+     */
+    public PseudoScheduledFuture(Runnable runnable, T result, boolean periodic) {
+        super(runnable, result);
+        this.periodic = periodic;
+    }
+
+    /**
+     * Constructs the object.
+     *
+     * @param callable action to be executed
+     * @param periodic {@code true} if this task is periodic, {@code false} otherwise
+     */
+    public PseudoScheduledFuture(Callable<T> callable, boolean periodic) {
+        super(callable);
+        this.periodic = periodic;
+    }
+
+    @Override
+    public long getDelay(TimeUnit unit) {
+        return unit.convert(workItem.getDelay(), TimeUnit.MILLISECONDS);
+    }
+
+    @Override
+    public int compareTo(Delayed other) {
+        return Long.compare(workItem.getDelay(), other.getDelay(TimeUnit.MILLISECONDS));
+    }
+
+    @Override
+    public boolean isPeriodic() {
+        return periodic;
+    }
+
+    @Override
+    public void run() {
+        if (isPeriodic()) {
+            super.runAndReset();
+
+        } else {
+            super.run();
+        }
+    }
+}