/*
* 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.mesos.runtime.clusterframework;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.Callable;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.PosixParser;
import org.apache.flink.configuration.ConfigConstants;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.configuration.GlobalConfiguration;
import org.apache.flink.core.fs.FileSystem;
import org.apache.flink.runtime.clusterframework.BootstrapTools;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.security.SecurityUtils;
import org.apache.flink.runtime.taskmanager.TaskManager;
import org.apache.flink.runtime.util.EnvironmentInformation;
import org.apache.flink.runtime.util.JvmShutdownSafeguard;
import org.apache.flink.runtime.util.SignalHandler;
import org.apache.flink.util.Preconditions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The entry point for running a TaskManager in a Mesos container.
*/
public class MesosTaskManagerRunner {
private static final Logger LOG = LoggerFactory.getLogger(MesosTaskManagerRunner.class);
private static final Options ALL_OPTIONS;
static {
ALL_OPTIONS =
new Options()
.addOption(BootstrapTools.newDynamicPropertiesOption());
}
/** The process environment variables */
private static final Map<String, String> ENV = System.getenv();
public static void runTaskManager(String[] args, final Class<? extends TaskManager> taskManager) throws Exception {
EnvironmentInformation.logEnvironmentInfo(LOG, taskManager.getSimpleName(), args);
SignalHandler.register(LOG);
JvmShutdownSafeguard.installAsShutdownHook(LOG);
// try to parse the command line arguments
CommandLineParser parser = new PosixParser();
CommandLine cmd = parser.parse(ALL_OPTIONS, args);
final Configuration configuration;
try {
final Configuration dynamicProperties = BootstrapTools.parseDynamicProperties(cmd);
GlobalConfiguration.setDynamicProperties(dynamicProperties);
LOG.debug("Mesos dynamic properties: {}", dynamicProperties);
configuration = GlobalConfiguration.loadConfiguration();
}
catch (Throwable t) {
LOG.error("Failed to load the TaskManager configuration and dynamic properties.", t);
System.exit(TaskManager.STARTUP_FAILURE_RETURN_CODE());
return;
}
// read the environment variables
final Map<String, String> envs = System.getenv();
final String tmpDirs = envs.get(MesosConfigKeys.ENV_FLINK_TMP_DIR);
// configure local directory
String flinkTempDirs = configuration.getString(ConfigConstants.TASK_MANAGER_TMP_DIR_KEY, null);
if (flinkTempDirs != null) {
LOG.info("Overriding Mesos temporary file directories with those " +
"specified in the Flink config: {}", flinkTempDirs);
}
else if (tmpDirs != null) {
LOG.info("Setting directories for temporary files to: {}", tmpDirs);
configuration.setString(ConfigConstants.TASK_MANAGER_TMP_DIR_KEY, tmpDirs);
}
// configure the default filesystem
try {
FileSystem.setDefaultScheme(configuration);
} catch (IOException e) {
throw new IOException("Error while setting the default " +
"filesystem scheme from configuration.", e);
}
// tell akka to die in case of an error
configuration.setBoolean(ConfigConstants.AKKA_JVM_EXIT_ON_FATAL_ERROR, true);
// Infer the resource identifier from the environment variable
String containerID = Preconditions.checkNotNull(envs.get(MesosConfigKeys.ENV_FLINK_CONTAINER_ID));
final ResourceID resourceId = new ResourceID(containerID);
LOG.info("ResourceID assigned for this container: {}", resourceId);
// Run the TM in the security context
SecurityUtils.SecurityConfiguration sc = new SecurityUtils.SecurityConfiguration(configuration);
SecurityUtils.install(sc);
try {
SecurityUtils.getInstalledContext().runSecured(new Callable<Integer>() {
@Override
public Integer call() throws Exception {
TaskManager.selectNetworkInterfaceAndRunTaskManager(configuration, resourceId, taskManager);
return 0;
}
});
}
catch (Throwable t) {
LOG.error("Error while starting the TaskManager", t);
System.exit(TaskManager.STARTUP_FAILURE_RETURN_CODE());
}
}
}