Examples with Builder com.google.protobuf.Message.Builder used on opensource projects

Example 1 with Builder

use of com.google.protobuf.Message.Builder in project grpc-java by grpc.

the class ProtoUtils method jsonMarshaller.

/**
   * Create a {@code Marshaller} for json protos of the same type as {@code defaultInstance}.
   *
   * <p>This is an unstable API and has not been optimized yet for performance.
   */
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/1786")
public static <T extends Message> Marshaller<T> jsonMarshaller(final T defaultInstance, final Parser parser, final Printer printer) {
    final Charset charset = Charset.forName("UTF-8");
    return new Marshaller<T>() {

        @Override
        public InputStream stream(T value) {
            try {
                return new ByteArrayInputStream(printer.print(value).getBytes(charset));
            } catch (InvalidProtocolBufferException e) {
                throw Status.INTERNAL.withCause(e).withDescription("Unable to print json proto").asRuntimeException();
            }
        }

        @SuppressWarnings("unchecked")
        @Override
        public T parse(InputStream stream) {
            Builder builder = defaultInstance.newBuilderForType();
            Reader reader = new InputStreamReader(stream, charset);
            T proto;
            try {
                parser.merge(reader, builder);
                proto = (T) builder.build();
                reader.close();
            } catch (InvalidProtocolBufferException e) {
                throw Status.INTERNAL.withDescription("Invalid protobuf byte sequence").withCause(e).asRuntimeException();
            } catch (IOException e) {
                // Same for now, might be unavailable
                throw Status.INTERNAL.withDescription("Invalid protobuf byte sequence").withCause(e).asRuntimeException();
            }
            return proto;
        }
    };
}

Example 2 with Builder

use of com.google.protobuf.Message.Builder in project camel by apache.

the class ProtobufDataFormat method unmarshal.

/*
     * (non-Javadoc)
     * @see org.apache.camel.spi.DataFormat#unmarshal(org.apache.camel.Exchange,
     * java.io.InputStream)
     */
public Object unmarshal(final Exchange exchange, final InputStream inputStream) throws Exception {
    ObjectHelper.notNull(defaultInstance, "defaultInstance or instanceClassName must be set", this);
    Builder builder = defaultInstance.newBuilderForType().mergeFrom(inputStream);
    if (!builder.isInitialized()) {
        // TODO which exception should be thrown here?
        throw new InvalidPayloadException(exchange, defaultInstance.getClass());
    }
    return builder.build();
}