2016年7月27日 星期三

Install Protocol Buffers for Python on CentOS 6.7 and Windows 7


Install protoc on CentOS 6.7

Clone the repo
git clone https://github.com/google/protobuf.git

Below is to follow here
https://github.com/google/protobuf/blob/master/src/README.md

Install tools
sudo yum install -y autoconf automake libtool curl make g++ unzip

Generate configure script
cd protobuf
./autogen.sh

Build C++ runtime and protoc
./configure --prefix=/usr
make
make check
sudo make install
sudo ldconfig # refresh shared library cache.

Test
protoc --version
libprotoc 3.0.0


Install Protocol Buffers for Python on Centos 6.7

Download and install it
wget https://github.com/google/protobuf/releases/download/v3.0.0-beta-4/protobuf-python-3.0.0-beta-4.tar.gz
tar -zxvf protobuf-python-3.0.0-beta-4.tar.gz
cd protobuf-3.0.0-beta-4/
cd python
python setup.py build
python setup.py test
python setup.py install (as root)


Install protoc.exe on Windows 7
Extract and place protoc.exe to C:\Windows\

Test
protoc --version
libprotoc 3.0.0

Install Protocol Buffers for Python on Windows 7

Protobuf for Python
Extract, go to ./python folder
python setup.py build
python setup.py test
python setup.py install (as root)


Test Protocol Buffers for Python on CentOS 6.7 and Windows 7

Create proto file
Create a file called Order.proto with following content
syntax="proto2";
message Order
{
  required int32 time = 1;
  required int32 userid = 2;
  required float price = 3;
  optional string desc = 4;
}

Generate .py file
protoc --python_out=. Order.proto

Create main.py
Create a file called main.py with following content
from Order_pb2 import *
if __name__=='__main__':
    order = Order()
    order.time = 123
    order.userid = 456
    order.price = 78.9
    order.desc = "here"
    print ('order', order)
    print ('time', order.time)
    print ('userid', order.userid)
    print ('price', order.price)
    print ('desc', order.desc)

Run main.py
D:\Lab\ProtocolBuffers>python main.py
order time: 123
userid: 456
price: 78.9
desc: "here"

time 123
userid 456
price 78.9
desc here

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