Example usage for org.apache.hadoop.crypto CipherSuite getUnknownValue

Introduction

In this page you can find the example usage for org.apache.hadoop.crypto CipherSuite getUnknownValue.

Prototype

public int getUnknownValue() 

Source Link

Usage

From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Obtain a CryptoCodec based on the CipherSuite set in a FileEncryptionInfo
 * and the available CryptoCodecs configured in the Configuration.
 * //from   ww  w.ja v  a 2 s.c  o  m
 * @param conf
 *            Configuration
 * @param feInfo
 *            FileEncryptionInfo
 * @return CryptoCodec
 * @throws IOException
 *             if no suitable CryptoCodec for the CipherSuite is
 *             available.
 */
private static CryptoCodec getCryptoCodec(Configuration conf, FileEncryptionInfo feInfo) throws IOException {
    final CipherSuite suite = feInfo.getCipherSuite();
    if (suite.equals(CipherSuite.UNKNOWN)) {
        throw new IOException("NameNode specified unknown CipherSuite with ID " + suite.getUnknownValue()
                + ", cannot instantiate CryptoCodec.");
    }
    final CryptoCodec codec = CryptoCodec.getInstance(conf, suite);
    if (codec == null) {
        throw new UnknownCipherSuiteException("No configuration found for the cipher suite "
                + suite.getConfigSuffix() + " prefixed with " + HADOOP_SECURITY_CRYPTO_CODEC_CLASSES_KEY_PREFIX
                + ". Please see the example configuration "
                + "hadoop.security.crypto.codec.classes.EXAMPLECIPHERSUITE "
                + "at core-default.xml for details.");
    }
    return codec;
}

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