Examples of com.google.protobuf.CodedOutputStream

com.google.protobuf.CodedOutputStream
Encodes and writes protocol message fields.
This class contains two kinds of methods: methods that write specific protocol message constructs and field types (e.g. {@link #writeTag} and{@link #writeInt32}) and methods that write low-level values (e.g. {@link #writeRawVarint32} and {@link #writeRawBytes}). If you are writing encoded protocol messages, you should use the former methods, but if you are writing some other format of your own design, use the latter.
This class is totally unsynchronized. @author kneton@google.com Kenton Varda

    if (m == null) return null;
    int serializedSize = m.getSerializedSize();
    int vintSize = CodedOutputStream.computeRawVarint32Size(serializedSize);
    byte [] buffer = new byte[serializedSize + vintSize];
    // Passing in a byte array saves COS creating a buffer which it does when using streams.
    CodedOutputStream cos = CodedOutputStream.newInstance(buffer);
    // This will write out the vint preamble and the message serialized.
    cos.writeMessageNoTag(m);
    cos.flush();
    cos.checkNoSpaceLeft();
    return ByteBuffer.wrap(buffer);
  }

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        int length = body.readableBytes();
        ChannelBuffer header =
            channel.getConfig().getBufferFactory().getBuffer(
                    body.order(),
                    CodedOutputStream.computeRawVarint32Size(length));
        CodedOutputStream codedOutputStream = CodedOutputStream
                .newInstance(new ChannelBufferOutputStream(header));
        codedOutputStream.writeRawVarint32(length);
        codedOutputStream.flush();
        return wrappedBuffer(header, body);
    }

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    }


    private static byte[] makeConnectionMessage(Counter.Value value)
            throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        CodedOutputStream codedOutput = CodedOutputStream.newInstance(out);
        codedOutput.writeRawLittleEndian32(value.getSerializedSize());
        value.writeTo(codedOutput);
        codedOutput.flush();


        byte[] all = out.toByteArray();
        return all;
    }

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    }
  }
  
  private void doVarIntTest(int value) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    CodedOutputStream cout = CodedOutputStream.newInstance(baos);
    cout.writeRawVarint32(value);
    cout.flush();


    DataInputStream dis = new DataInputStream(
        new ByteArrayInputStream(baos.toByteArray()));
    assertEquals(value, ProtoUtil.readRawVarint32(dis));
  }

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    }
  }


  @Override
  public int encode(PositionedByteRange dst, CellProtos.Cell val) {
    CodedOutputStream os = outputStreamFromByteRange(dst);
    try {
      int before = os.spaceLeft(), after, written;
      val.writeTo(os);
      after = os.spaceLeft();
      written = before - after;
      dst.setPosition(dst.getPosition() + written);
      return written;
    } catch (IOException e) {
      throw new RuntimeException("Error while encoding type.", e);

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        return new HistogramRollup(bins);
    }


    private void serializeBins(Collection<Bin<SimpleTarget>> bins, byte[] buf) throws IOException {
        CodedOutputStream protobufOut = CodedOutputStream.newInstance(buf);


        protobufOut.writeRawByte(Constants.VERSION_1_HISTOGRAM);


        for (Bin<SimpleTarget> bin : bins) {
            protobufOut.writeRawVarint64((long) bin.getCount());
            protobufOut.writeDoubleNoTag(bin.getMean());
        }
    }

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    @Override
    public ByteBuffer toByteBuffer(String o) {
        try {
            byte[] buf = new byte[computeBufLength(o)];
            CodedOutputStream out = CodedOutputStream.newInstance(buf);
            writeToOutputStream(o, out);
            return ByteBuffer.wrap(buf);
        } catch (IOException e) {
            throw new RuntimeException("Serialization problems", e);
        }

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            return (AbstractSerializer<T>)fullInstance;   
    }


    private static void serializeRollup(BasicRollup basicRollup, byte[] buf) throws IOException {
        rollupSize.update(buf.length);
        CodedOutputStream protobufOut = CodedOutputStream.newInstance(buf);
        serializeRollup(basicRollup, protobufOut);
    }

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        else
            return in.readRawVarint64();
    }


    private static void serializeFullResMetric(Object o, byte[] buf) throws IOException {
        CodedOutputStream protobufOut = CodedOutputStream.newInstance(buf);
        byte type = typeOf(o);
        fullResSize.update(sizeOf(o, type));
        protobufOut.writeRawByte(Constants.VERSION_1_FULL_RES);


        switch (type) {
            case Constants.B_I32:
                protobufOut.writeRawByte(type);
                protobufOut.writeRawVarint32((Integer) o);
                break;
            case Constants.B_I64:
                protobufOut.writeRawByte(type);
                protobufOut.writeRawVarint64((Long) o);
                break;
            case Constants.B_DOUBLE:
                protobufOut.writeRawByte(type);
                protobufOut.writeDoubleNoTag((Double) o);
                break;
            case Type.B_FLOAT_AS_DOUBLE:
                protobufOut.writeRawByte(Constants.B_DOUBLE);
                protobufOut.writeDoubleNoTag(((Float) o).doubleValue());
                break;
            default:
                throw new SerializationException(String.format("Cannot serialize %s", o.getClass().getName()));
        }
    }

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        }
        return sz;
    }
    
    private static void serializeCounterRollup(CounterRollup rollup, byte[] buf) throws IOException {
        CodedOutputStream out = CodedOutputStream.newInstance(buf);
        CounterRollupSize.update(buf.length);
        out.writeRawByte(Constants.VERSION_1_COUNTER_ROLLUP);
        putUnversionedDoubleOrLong(rollup.getCount(), out);
        out.writeDoubleNoTag(rollup.getRate());
        out.writeRawVarint32(rollup.getSampleCount());
    }

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