/*
* *
* 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
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*/
package org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime.ContainerExecutionException;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime.ContainerRuntimeContext;
import java.util.Map;
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class DelegatingLinuxContainerRuntime implements LinuxContainerRuntime {
private static final Log LOG = LogFactory
.getLog(DelegatingLinuxContainerRuntime.class);
private DefaultLinuxContainerRuntime defaultLinuxContainerRuntime;
private DockerLinuxContainerRuntime dockerLinuxContainerRuntime;
@Override
public void initialize(Configuration conf)
throws ContainerExecutionException {
PrivilegedOperationExecutor privilegedOperationExecutor =
PrivilegedOperationExecutor.getInstance(conf);
defaultLinuxContainerRuntime = new DefaultLinuxContainerRuntime(
privilegedOperationExecutor);
defaultLinuxContainerRuntime.initialize(conf);
dockerLinuxContainerRuntime = new DockerLinuxContainerRuntime(
privilegedOperationExecutor);
dockerLinuxContainerRuntime.initialize(conf);
}
private LinuxContainerRuntime pickContainerRuntime(Container container) {
Map<String, String> env = container.getLaunchContext().getEnvironment();
LinuxContainerRuntime runtime;
if (DockerLinuxContainerRuntime.isDockerContainerRequested(env)){
runtime = dockerLinuxContainerRuntime;
} else {
runtime = defaultLinuxContainerRuntime;
}
if (LOG.isInfoEnabled()) {
LOG.info("Using container runtime: " + runtime.getClass()
.getSimpleName());
}
return runtime;
}
@Override
public void prepareContainer(ContainerRuntimeContext ctx)
throws ContainerExecutionException {
Container container = ctx.getContainer();
LinuxContainerRuntime runtime = pickContainerRuntime(container);
runtime.prepareContainer(ctx);
}
@Override
public void launchContainer(ContainerRuntimeContext ctx)
throws ContainerExecutionException {
Container container = ctx.getContainer();
LinuxContainerRuntime runtime = pickContainerRuntime(container);
runtime.launchContainer(ctx);
}
@Override
public void signalContainer(ContainerRuntimeContext ctx)
throws ContainerExecutionException {
Container container = ctx.getContainer();
LinuxContainerRuntime runtime = pickContainerRuntime(container);
runtime.signalContainer(ctx);
}
@Override
public void reapContainer(ContainerRuntimeContext ctx)
throws ContainerExecutionException {
Container container = ctx.getContainer();
LinuxContainerRuntime runtime = pickContainerRuntime(container);
runtime.reapContainer(ctx);
}
}