1 files changed, 73 insertions, 0 deletions
diff --git a/qpid/java/systests/src/main/java/org/apache/qpid/test/framework/clocksynch/LocalClockSynchronizer.java b/qpid/java/systests/src/main/java/org/apache/qpid/test/framework/clocksynch/LocalClockSynchronizer.java
new file mode 100644
index 0000000000..f448d5f23c
--- /dev/null
+++ b/qpid/java/systests/src/main/java/org/apache/qpid/test/framework/clocksynch/LocalClockSynchronizer.java
@@ -0,0 +1,73 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ *
+ */
+package org.apache.qpid.test.framework.clocksynch;
+
+/**
+ * LocalClockSynchronizer is a fake {@link ClockSynchronizer} that simply calls System.nanoTime(). It exists so that
+ * the same tests can be run distributed or locally, taking timings against the ClockSynchronizer interface without
+ * being aware of how they are being run.
+ *
+ * <p/><table id="crc"><caption>CRC Card</caption>
+ * <tr><th> Responsibilities <th> Collaborations
+ * <tr><td> Supply the local clock with no delta.
+ * </table>
+ */
+public class LocalClockSynchronizer implements ClockSynchronizer
+{
+    /**
+     * The slave side should call this to copute a clock delta with the reference.
+     *
+     * @throws org.apache.qpid.test.framework.clocksynch.ClockSynchFailureException
+     *          If synchronization cannot be achieved.
+     */
+    public void synch() throws ClockSynchFailureException
+    { }
+
+    /**
+     * Gets the clock delta in nano seconds.
+     *
+     * @return The clock delta in nano seconds.
+     */
+    public long getDelta()
+    {
+        return 0L;
+    }
+
+    /**
+     * Gets an estimate of the clock error in nan seconds.
+     *
+     * @return An estimate of the clock error in nan seconds.
+     */
+    public long getEpsilon()
+    {
+        return 0L;
+    }
+
+    /**
+     * Gets the local clock time with any computed delta added in.
+     *
+     * @return The local clock time with any computed delta added in.
+     */
+    public long nanoTime()
+    {
+        return System.nanoTime();
+    }
+}