Examples with UnknownCryptoProtocolVersionException org.apache.hadoop.hdfs.UnknownCryptoProtocolVersionException used on opensource projects

Example 1 with UnknownCryptoProtocolVersionException

use of org.apache.hadoop.hdfs.UnknownCryptoProtocolVersionException in project hadoop by apache.

the class FSNamesystem method chooseProtocolVersion.

/**
   * If the file is within an encryption zone, select the appropriate 
   * CryptoProtocolVersion from the list provided by the client. Since the
   * client may be newer, we need to handle unknown versions.
   *
   * @param zone EncryptionZone of the file
   * @param supportedVersions List of supported protocol versions
   * @return chosen protocol version
   * @throws IOException
   */
CryptoProtocolVersion chooseProtocolVersion(EncryptionZone zone, CryptoProtocolVersion[] supportedVersions) throws UnknownCryptoProtocolVersionException, UnresolvedLinkException, SnapshotAccessControlException {
    Preconditions.checkNotNull(zone);
    Preconditions.checkNotNull(supportedVersions);
    // Right now, we only support a single protocol version,
    // so simply look for it in the list of provided options
    final CryptoProtocolVersion required = zone.getVersion();
    for (CryptoProtocolVersion c : supportedVersions) {
        if (c.equals(CryptoProtocolVersion.UNKNOWN)) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Ignoring unknown CryptoProtocolVersion provided by " + "client: " + c.getUnknownValue());
            }
            continue;
        }
        if (c.equals(required)) {
            return c;
        }
    }
    throw new UnknownCryptoProtocolVersionException("No crypto protocol versions provided by the client are supported." + " Client provided: " + Arrays.toString(supportedVersions) + " NameNode supports: " + Arrays.toString(CryptoProtocolVersion.values()));
}