gobblin.data.management.copy.TestCopyableDataset.java Source code

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Here is the source code for gobblin.data.management.copy.TestCopyableDataset.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 gobblin.data.management.copy;

import java.io.IOException;
import java.util.Collection;
import java.util.List;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;

import com.google.common.collect.Lists;

import gobblin.dataset.FileSystemDataset;

/**
 * Implementation of {@link CopyableDataset} for testing.
 */
public class TestCopyableDataset implements CopyableDataset, FileSystemDataset {

    public static final int FILE_COUNT = 10;
    public static final String ORIGIN_PREFIX = "/test";
    public static final String DESTINATION_PREFIX = "/destination";
    public static final String RELATIVE_PREFIX = "/relative";
    public static final OwnerAndPermission OWNER_AND_PERMISSION = new OwnerAndPermission("owner", "group",
            FsPermission.getDefault());

    private final Path datasetRoot;

    public TestCopyableDataset(Path datasetRoot) {
        this.datasetRoot = datasetRoot;
    }

    public TestCopyableDataset() {
        this.datasetRoot = new Path(ORIGIN_PREFIX);
    }

    @Override
    public Collection<? extends CopyEntity> getCopyableFiles(FileSystem targetFs, CopyConfiguration configuration)
            throws IOException {

        List<CopyEntity> files = Lists.newArrayList();

        for (int i = 0; i < FILE_COUNT; i++) {
            FileStatus origin = new FileStatus(10, false, 0, 0, 0, new Path(this.datasetRoot, Integer.toString(i)));
            CopyableFile.Builder builder = CopyableFile
                    .builder(FileSystem.getLocal(new Configuration()), origin, datasetRoot(), configuration)
                    .destinationOwnerAndPermission(OWNER_AND_PERMISSION)
                    .ancestorsOwnerAndPermission(Lists.newArrayList(OWNER_AND_PERMISSION))
                    .checksum("checksum".getBytes());
            modifyCopyableFile(builder, origin);
            files.add(builder.build());
        }

        return files;
    }

    @Override
    public Path datasetRoot() {
        return this.datasetRoot;
    }

    protected void modifyCopyableFile(CopyableFile.Builder builder, FileStatus origin) {
    }

    @Override
    public String datasetURN() {
        return datasetRoot().toString();
    }
}