com.continuuity.weave.yarn.utils.YarnUtils.java Source code

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Here is the source code for com.continuuity.weave.yarn.utils.YarnUtils.java

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/*
 * Copyright 2012-2013 Continuuity,Inc. All Rights Reserved.
 *
 * 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 com.continuuity.weave.yarn.utils;

import com.continuuity.weave.api.LocalFile;
import com.continuuity.weave.filesystem.Location;
import com.google.common.base.Preconditions;
import com.google.common.base.Throwables;
import org.apache.hadoop.yarn.api.records.LocalResource;
import org.apache.hadoop.yarn.api.records.LocalResourceType;
import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
import org.apache.hadoop.yarn.util.ConverterUtils;
import org.apache.hadoop.yarn.util.Records;

import java.io.IOException;

/**
 * Collection of helper methods to simplify YARN calls.
 */
public class YarnUtils {

    public static LocalResource createLocalResource(Location location) {
        try {
            LocalResource resource = Records.newRecord(LocalResource.class);
            resource.setVisibility(LocalResourceVisibility.APPLICATION);
            resource.setType(LocalResourceType.FILE);
            resource.setResource(ConverterUtils.getYarnUrlFromURI(location.toURI()));
            resource.setTimestamp(location.lastModified());
            resource.setSize(location.length());
            return resource;
        } catch (IOException e) {
            throw Throwables.propagate(e);
        }
    }

    public static LocalResource createLocalResource(LocalFile localFile) {
        Preconditions.checkArgument(localFile.getLastModified() >= 0, "Last modified time should be >= 0.");
        Preconditions.checkArgument(localFile.getSize() >= 0, "File size should be >= 0.");

        LocalResource resource = Records.newRecord(LocalResource.class);
        resource.setVisibility(LocalResourceVisibility.APPLICATION);
        resource.setResource(ConverterUtils.getYarnUrlFromURI(localFile.getURI()));
        resource.setTimestamp(localFile.getLastModified());
        resource.setSize(localFile.getSize());
        return setLocalResourceType(resource, localFile);
    }

    private static LocalResource setLocalResourceType(LocalResource localResource, LocalFile localFile) {
        if (localFile.isArchive()) {
            if (localFile.getPattern() == null) {
                localResource.setType(LocalResourceType.ARCHIVE);
            } else {
                localResource.setType(LocalResourceType.PATTERN);
                localResource.setPattern(localFile.getPattern());
            }
        } else {
            localResource.setType(LocalResourceType.FILE);
        }
        return localResource;
    }

    private YarnUtils() {
    }
}