Package co.cask.cdap.common.io

Examples of co.cask.cdap.common.io.Decoder

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  }

  @Override
  public KeyIdentifier decode(byte[] data) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Decoder decoder = new BinaryDecoder(bis);

    DatumReader<KeyIdentifier> reader = readerFactory.create(KEY_IDENTIFIER_TYPE,
                                                             KeyIdentifier.Schemas.getCurrentSchema());
    int readVersion = decoder.readInt();
    Schema readSchema = KeyIdentifier.Schemas.getSchemaVersion(readVersion);
    if (readSchema == null) {
      throw new IOException("Unknown schema version for KeyIdentifier: " + readVersion);
    }
    return reader.read(decoder, readSchema);
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  }

  @Override
  public AccessToken decode(byte[] data) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Decoder decoder = new BinaryDecoder(bis);

    DatumReader<AccessToken> reader = readerFactory.create(ACCESS_TOKEN_TYPE, AccessToken.Schemas.getCurrentSchema());
    int readVersion = decoder.readInt();
    Schema readSchema = AccessToken.Schemas.getSchemaVersion(readVersion);
    if (readSchema == null) {
      throw new IOException("Unknown schema version for AccessToken: " + readVersion);
    }
    return reader.read(decoder, readSchema);
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  }

  @Override
  public AccessTokenIdentifier decode(byte[] data) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Decoder decoder = new BinaryDecoder(bis);
    DatumReader<AccessTokenIdentifier> reader = readerFactory.create(ACCESS_TOKEN_IDENTIFIER_TYPE,
                                                                     AccessTokenIdentifier.Schemas.getCurrentSchema());
    int readVersion = decoder.readInt();
    Schema readSchema = AccessTokenIdentifier.Schemas.getSchemaVersion(readVersion);
    if (readSchema == null) {
      throw new IOException("Unknown schema version for AccessTokenIdentifier: " + readVersion);
    }
    return reader.read(decoder, readSchema);
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    SchemaHash schemaHash = new SchemaHash(buffer);
    Preconditions.checkArgument(schemaHash.equals(STREAM_EVENT_SCHEMA.getSchemaHash()),
                                "Schema from payload not matching StreamEvent schema.");

    Decoder decoder = new BinaryDecoder(new ByteBufferInputStream(buffer));

    try {
      StreamEventData data = StreamEventDataCodec.decode(decoder);

      // Read the timestamp
      long timestamp = decoder.readLong();
      return new DefaultStreamEvent(data, timestamp);

    } catch (IOException e) {
      // It should never happens, otherwise something very wrong.
      throw Throwables.propagate(e);
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        ByteBuffer buffer = ByteBuffer.wrap(content);
        SchemaHash schemaHash = new SchemaHash(buffer);
        Preconditions.checkArgument(schemaHash.equals(StreamEventDataCodec.STREAM_DATA_SCHEMA.getSchemaHash()),
                                    "Schema from payload not matching with StreamEventData schema.");

        Decoder decoder = new BinaryDecoder(new ByteBufferInputStream(buffer));
        // In old schema, timestamp is not recorded.
        builder.add(new DefaultStreamEvent(StreamEventDataCodec.decode(decoder), 0));
      }
    }
    final List<StreamEvent> events = builder.build();
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Related Classes of co.cask.cdap.common.io.Decoder

  • co.cask.cdap.common.stream.StreamEventCodec
  • co.cask.cdap.data2.transaction.stream.QueueToStreamConsumer
  • co.cask.cdap.security.auth.AccessTokenCodec
  • co.cask.cdap.security.auth.AccessTokenIdentifierCodec
  • co.cask.cdap.security.auth.KeyIdentifierCodec
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