io.cdap.cdap.internal.app.program.LauncherUtils Maven / Gradle / Ivy
/*
* Copyright © 2022 Cask Data, Inc.
*
* 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.
*/
package io.cdap.cdap.internal.app.program;
import io.cdap.cdap.common.conf.CConfiguration;
import io.cdap.cdap.common.conf.Constants;
import org.apache.twill.api.TwillPreparer;
import java.util.Map;
import java.util.Set;
/**
* Utility class for launching twill runnables.
*/
public class LauncherUtils {
/**
* Sets the JVM options overrides for all twill runnables with an override config set.
* @param cConf The configuration to use
* @param twillPreparer The twill preparer to use
* @param runnables The set of runnables to override
*/
public static void overrideJVMOpts(CConfiguration cConf, TwillPreparer twillPreparer, Set runnables) {
Map jvmOverrideConfig = cConf.getPropsWithPrefix(Constants.AppFabric.PROGRAM_JVM_OPTS_PREFIX);
for (Map.Entry jvmOverrideEntry : jvmOverrideConfig.entrySet()) {
String jvmOverrideKey = jvmOverrideEntry.getKey();
if (runnables.contains(jvmOverrideKey)) {
twillPreparer.setJVMOptions(jvmOverrideKey, jvmOverrideEntry.getValue());
}
}
}
}