Example usage for org.apache.hadoop.fs FileChecksum FileChecksum

Introduction

In this page you can find the example usage for org.apache.hadoop.fs FileChecksum FileChecksum.

Prototype

FileChecksum

Source Link

Usage

From source file:com.pigai.hadoop.HttpFSFileSystem.java

License:Apache License

@Override
public FileChecksum getFileChecksum(Path f) throws IOException {
    Map<String, String> params = new HashMap<String, String>();
    params.put(OP_PARAM, Operation.GETFILECHECKSUM.toString());
    HttpURLConnection conn = getConnection(Operation.GETFILECHECKSUM.getMethod(), params, f, true);
    validateResponse(conn, HttpURLConnection.HTTP_OK);
    final JSONObject json = (JSONObject) ((JSONObject) jsonParse(conn)).get(FILE_CHECKSUM_JSON);
    return new FileChecksum() {
        @Override//from  ww  w. ja  v  a  2 s.c  o  m
        public String getAlgorithmName() {
            return (String) json.get(CHECKSUM_ALGORITHM_JSON);
        }

        @Override
        public int getLength() {
            return ((Long) json.get(CHECKSUM_LENGTH_JSON)).intValue();
        }

        @Override
        public byte[] getBytes() {
            return StringUtils.hexStringToByte((String) json.get(CHECKSUM_BYTES_JSON));
        }

        public void write(DataOutput out) throws IOException {
            throw new UnsupportedOperationException();
        }

        public void readFields(DataInput in) throws IOException {
            throw new UnsupportedOperationException();
        }
    };
}

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From source file:org.apache.falcon.hadoop.JailedFileSystem.java

License:Apache License

@Override
public FileChecksum getFileChecksum(Path f) throws IOException {
    final byte[] md5 = DigestUtils.md5(FileUtils.readFileToByteArray(new File(toLocalPath(f).toString())));
    return new FileChecksum() {

        @Override/*w  w  w.  j a  v  a 2 s.  c  om*/
        public String getAlgorithmName() {
            return "MD5";
        }

        @Override
        public int getLength() {
            return md5.length;
        }

        @Override
        public byte[] getBytes() {
            return md5;
        }

        @Override
        public void write(DataOutput out) throws IOException {
        }

        @Override
        public void readFields(DataInput in) throws IOException {
        }
    };
}

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