org.apache.flume.sink.customhdfs.MockFileSystem.java Source code

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Here is the source code for org.apache.flume.sink.customhdfs.MockFileSystem.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.flume.sink.customhdfs;

import java.io.IOException;
import java.net.URI;

import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
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 org.apache.hadoop.util.Progressable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MockFileSystem extends FileSystem {

    private static final Logger logger = LoggerFactory.getLogger(MockFileSystem.class);

    FileSystem fs;
    int numberOfRetriesRequired;
    MockFsDataOutputStream latestOutputStream;
    int currentRenameAttempts;
    boolean closeSucceed = true;

    public MockFileSystem(FileSystem fs, int numberOfRetriesRequired) {
        this.fs = fs;
        this.numberOfRetriesRequired = numberOfRetriesRequired;
    }

    public MockFileSystem(FileSystem fs, int numberOfRetriesRequired, boolean closeSucceed) {
        this.fs = fs;
        this.numberOfRetriesRequired = numberOfRetriesRequired;
        this.closeSucceed = closeSucceed;
    }

    @Override
    public FSDataOutputStream append(Path arg0, int arg1, Progressable arg2) throws IOException {

        latestOutputStream = new MockFsDataOutputStream(fs.append(arg0, arg1, arg2), closeSucceed);

        return latestOutputStream;
    }

    @Override
    public FSDataOutputStream create(Path arg0) throws IOException {
        //throw new IOException ("HI there2");
        latestOutputStream = new MockFsDataOutputStream(fs.create(arg0), closeSucceed);

        return latestOutputStream;
    }

    @Override
    public FSDataOutputStream create(Path arg0, FsPermission arg1, boolean arg2, int arg3, short arg4, long arg5,
            Progressable arg6) throws IOException {
        throw new IOException("Not a real file system");
    }

    @Override
    @Deprecated
    public boolean delete(Path arg0) throws IOException {
        return fs.delete(arg0);
    }

    @Override
    public boolean delete(Path arg0, boolean arg1) throws IOException {
        return fs.delete(arg0, arg1);
    }

    @Override
    public FileStatus getFileStatus(Path arg0) throws IOException {
        return fs.getFileStatus(arg0);
    }

    @Override
    public URI getUri() {
        return fs.getUri();
    }

    @Override
    public Path getWorkingDirectory() {
        return fs.getWorkingDirectory();
    }

    @Override
    public FileStatus[] listStatus(Path arg0) throws IOException {
        return fs.listStatus(arg0);
    }

    @Override
    public boolean mkdirs(Path arg0, FsPermission arg1) throws IOException {
        // TODO Auto-generated method stub
        return fs.mkdirs(arg0, arg1);
    }

    @Override
    public FSDataInputStream open(Path arg0, int arg1) throws IOException {
        return fs.open(arg0, arg1);
    }

    @Override
    public boolean rename(Path arg0, Path arg1) throws IOException {
        currentRenameAttempts++;
        logger.info("Attempting to Rename: '" + currentRenameAttempts + "' of '" + numberOfRetriesRequired + "'");
        if (currentRenameAttempts >= numberOfRetriesRequired || numberOfRetriesRequired == 0) {
            logger.info("Renaming file");
            return fs.rename(arg0, arg1);
        } else {
            throw new IOException("MockIOException");
        }
    }

    @Override
    public void setWorkingDirectory(Path arg0) {
        fs.setWorkingDirectory(arg0);

    }
}