1 files changed, 128 insertions, 0 deletions
diff --git a/utils-test/src/main/java/org/onap/policy/common/utils/time/WorkItem.java b/utils-test/src/main/java/org/onap/policy/common/utils/time/WorkItem.java
new file mode 100644
index 00000000..af3d5d7e
--- /dev/null
+++ b/utils-test/src/main/java/org/onap/policy/common/utils/time/WorkItem.java
@@ -0,0 +1,128 @@
+/*
+ * ============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 lombok.AccessLevel;
+import lombok.Getter;
+import org.onap.policy.common.utils.time.TestTime;
+
+/**
+ * Work item to be executed at some time.
+ */
+class WorkItem {
+
+    /**
+     * Pseudo time with which this item is associated.
+     */
+    private final TestTime currentTime;
+
+    /**
+     * Time, in milliseconds, when the timer should fire next.
+     */
+    @Getter(AccessLevel.PROTECTED)
+    private long nextMs;
+
+
+    /**
+     * Constructs the object.
+     *
+     * @param currentTime time with which this item is associated
+     * @param delayMs time, in milliseconds, before this item should be executed
+     */
+    public WorkItem(TestTime currentTime, long delayMs) {
+        if (delayMs < 0) {
+            throw new IllegalArgumentException("invalid delay " + delayMs);
+        }
+
+        this.currentTime = currentTime;
+        bumpNextTime(delayMs);
+    }
+
+    /**
+     * Gets the delay until the item should be fired.
+     *
+     * @return the delay until the item should be fired
+     */
+    public long getDelay() {
+        return (nextMs - currentTime.getMillis());
+    }
+
+    /**
+     * Determines if this work item was canceled.
+     *
+     * @return {@code true} if this item was canceled, {@code false} otherwise
+     */
+    public boolean wasCancelled() {
+        return false;
+    }
+
+    /**
+     * Bumps {@link #nextMs}, if this is a periodic task. The default method simply
+     * returns {@code false}.
+     *
+     * @return {@code true} if the time was bumped, {@code false} otherwise (i.e., it is
+     *         not a periodic task)
+     */
+    public boolean bumpNextTime() {
+        return false;
+    }
+
+    /**
+     * Bumps {@link #nextMs}, setting it to the current time plus the given delay.
+     *
+     * @param delayMs time, in milliseconds, before this item should be (re-)executed
+     */
+    protected void bumpNextTime(long delayMs) {
+        if (delayMs < 0) {
+            throw new IllegalArgumentException("negative delay");
+        }
+
+        // always bump by at least 1 millisecond
+        this.nextMs = currentTime.getMillis() + Math.max(1, delayMs);
+    }
+
+    /**
+     * Interrupts the thread that created the work item, if appropriate. The default
+     * method does nothing.
+     */
+    public void interrupt() {
+        // do nothing
+    }
+
+    /**
+     * Determines if this item is associated with the given object. The default method
+     * simply returns {@code false}.
+     *
+     * @param associate candidate associate (e.g., Timer)
+     * @return {@code true} if the item is associated with the given object, {@code false}
+     *         otherwise
+     */
+    public boolean isAssociatedWith(Object associate) {
+        return false;
+    }
+
+    /**
+     * Fires/executes this item. The default method does nothing.
+     */
+    public void fire() {
+        // do nothing
+    }
+}