Add TimeBasedLoadTest base class

Signed-off-by: Mesbah_Alam@ca.ibm.com <Mesbah_Alam@ca.ibm.com>

stf.load/src/stf.load/net/adoptopenjdk/loadTest/TimeBasedLoadTest.java

@@ -0,0 +1,60 @@
+/*******************************************************************************
+* 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
+*
+*      https://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 net.adoptopenjdk.loadTest;
+
+import net.adoptopenjdk.stf.StfException;
+import net.adoptopenjdk.stf.environment.StfTestArguments;
+import net.adoptopenjdk.stf.extensions.core.StfCoreExtension;
+import net.adoptopenjdk.stf.plugin.interfaces.StfPluginInterface;
+import net.adoptopenjdk.stf.util.TimeParser; 
+
+/** 
+ * An abstract class to be extended and implemented by STF test plugins that needs the capability to run 
+ * in a time-based fashion. 
+ * */
+public abstract class TimeBasedLoadTest implements StfPluginInterface {
+
+	String defaultTimeout = "3h";
+	protected String timeLimit;
+	protected StfTestArguments testArgs;
+	protected boolean isTimeBasedLoadTest = true;
+	protected String finalTimeout = defaultTimeout; 
+
+	public void pluginInit(StfCoreExtension stf) throws StfException {
+
+		// When used as a time based test, this STF test plugin accepts the following two parameters:
+		//   (1) timeLimit : Optional Time duration value (e.g. 5s, 5m, 5h) for which the load should be run. 
+		//   (2) workload  : Optional workload value used in a subset of tests (e.g. DAA).
+		testArgs = stf.env().getTestProperties("timeLimit=[0]","workload=[none]");
+		timeLimit = testArgs.get("timeLimit");
+
+		// When We are running an iteration based load test, no timeLimit is specified 
+		if ( timeLimit.equals("0")) {
+			isTimeBasedLoadTest = false; 
+		}
+
+		if (isTimeBasedLoadTest) { 
+			long finalTimeoutInSeconds = TimeParser.parseTimeSpecification(defaultTimeout).getSeconds() + 
+				TimeParser.parseTimeSpecification(timeLimit).getSeconds();
+			finalTimeout = finalTimeoutInSeconds + "s"; 
+		}
+	}
+
+	public void setUp(StfCoreExtension test) throws StfException {
+	}
+
+	public void tearDown(StfCoreExtension stf) throws StfException {
+	}
+}