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BashJavaUtils.java
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BashJavaUtils.java
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/*
* 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.flink.runtime.util;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.configuration.TaskManagerOptions;
import org.apache.flink.runtime.clusterframework.TaskExecutorResourceSpec;
import org.apache.flink.runtime.clusterframework.TaskExecutorResourceUtils;
import org.apache.flink.runtime.taskexecutor.TaskManagerRunner;
import java.util.Arrays;
import static org.apache.flink.util.Preconditions.checkArgument;
/**
* Utility class for using java utilities in bash scripts.
*/
public class BashJavaUtils {
private static final String EXECUTION_PREFIX = "BASH_JAVA_UTILS_EXEC_RESULT:";
public static void main(String[] args) throws Exception {
checkArgument(args.length > 0, "Command not specified.");
switch (Command.valueOf(args[0])) {
case GET_TM_RESOURCE_DYNAMIC_CONFIGS:
getTmResourceDynamicConfigs(args);
break;
case GET_TM_RESOURCE_JVM_PARAMS:
getTmResourceJvmParams(args);
break;
default:
// unexpected, Command#valueOf should fail if a unknown command is passed in
throw new RuntimeException("Unexpected, something is wrong.");
}
}
private static void getTmResourceDynamicConfigs(String[] args) throws Exception {
Configuration configuration = getConfigurationForStandaloneTaskManagers(args);
TaskExecutorResourceSpec taskExecutorResourceSpec = TaskExecutorResourceUtils.resourceSpecFromConfig(configuration);
System.out.println(EXECUTION_PREFIX + TaskExecutorResourceUtils.generateDynamicConfigsStr(taskExecutorResourceSpec));
}
private static void getTmResourceJvmParams(String[] args) throws Exception {
Configuration configuration = getConfigurationForStandaloneTaskManagers(args);
TaskExecutorResourceSpec taskExecutorResourceSpec = TaskExecutorResourceUtils.resourceSpecFromConfig(configuration);
System.out.println(EXECUTION_PREFIX + TaskExecutorResourceUtils.generateJvmParametersStr(taskExecutorResourceSpec));
}
private static Configuration getConfigurationForStandaloneTaskManagers(String[] args) throws Exception {
Configuration configuration = TaskManagerRunner.loadConfiguration(Arrays.copyOfRange(args, 1, args.length));
return TaskExecutorResourceUtils.getConfigurationMapLegacyTaskManagerHeapSizeToConfigOption(
configuration, TaskManagerOptions.TOTAL_FLINK_MEMORY);
}
/**
* Commands that BashJavaUtils supports.
*/
public enum Command {
/**
* Get dynamic configs of task executor resources.
*/
GET_TM_RESOURCE_DYNAMIC_CONFIGS,
/**
* Get JVM parameters of task executor resources.
*/
GET_TM_RESOURCE_JVM_PARAMS
}
}