前言
一直知道Google开源的一个与语言无关的数据交换协议:protobuf。只知道是一种不同于json和XML的格式,还有就是性能特别的好(这在Java和C++的实现确实是!)
最近闲下来看了下Google的Protobuf的相关东西,然而baidu出来的东西很多都过时了,我不得不花些时间来倒腾,于是就有了如下的内容。
$ sudo apt-get install autoconf automake libtool curl $ git clone https://github.com/google/protobuf $ cd protobuf
由于“你懂的”的原因,autogen无法curl下载到gmock的源代码包,所以我把gmock的包放到了自己的github上。修改autogen.sh,让它下载我github上的包
peter@ubuntu14:~/protobuf/protobuf$ git diff diff --git a/autogen.sh b/autogen.sh index 5b4c29f..f2abf77 100755 --- a/autogen.sh +++ b/autogen.sh @@ -31,7 +31,7 @@ fi # directory is set up as an SVN external. if test ! -e gmock; then echo "Google Mock not present. Fetching gmock-1.7.0 from the web..." - curl $curlopts -O https://googlemock.googlecode.com/files/gmock-1.7.0.zip + curl $curlopts -L -o gmock-1.7.0.zip https://github.com/peter-wangxu/gMock/archive/1.7.0.zip unzip -q gmock-1.7.0.zip rm gmock-1.7.0.zip mv gmock-1.7.0 gmock
#把curl那一行替换成绿色的
$ ./autogen
$ ./configure $ make $ make check $ sudo make install $ sudo ldconfig # refresh shared library cache.
NOTE : 默认是安装在“/usr/local/lib”下的,在有些平台/usr/local/lib不是默认的LD_LIBRARY_PATH变量里面,可以在通过如下命令改变安装目录
$ ./configure --prefix=/usr
当看到类似下面的文字,说明protobuf基本安装完成
============================================================================ Testsuite summary for Protocol Buffers 3.0.0-beta-2 ============================================================================ # TOTAL: 6 # PASS: 6 # SKIP: 0 # XFAIL: 0 # FAIL: 0 # XPASS: 0 # ERROR: 0 ============================================================================
接下来就是跟Python语言相关的一些配置了
cd python # 位于protobuf下 sudo python setup.py install
NOTE: 如果上面命令失败,你可以试试安装下pip的相关包,可以解决些python包的依赖问题
sudo apt-get install python-pip
接下来就是使用protobuf了
$ touch DataService.proto # 放入以下内容 message RowProto { required uint32 null_map = 1; repeated string column = 2; } message TableProto { repeated string column = 1; repeated string row = 2; }
protoc --python_out=. ./DataService.proto
创建TestDataService.py文件,放入下面内容
import sys import DataService_pb2 #create proto row = DataService_pb2.RowProto() row.null_map = 1 row.column.append("wang") row.column.append("female") row_str=row.SerializeToString() print "row_str:", row_str table = DataService_pb2.TableProto() table.column.append("name") table.column.append("gender") table.row.append(row_str) table_str = table.SerializeToString() #process proto table_proto = DataService_pb2.TableProto() table_proto.ParseFromString(table_str) print "column:" print table_proto.column row_str = table_proto.row[0] row_proto = DataService_pb2.RowProto() row_proto.ParseFromString(row_str.encode('utf8')) print "row1:" print row_proto.column
运行TestDataServer.py
peter@ubuntu14:~/protobuf/proto_test$ python TestDataService.py row_str: wangfemale column: [u'name', u'gender'] row1: [u'wang', u'female']
本期的内容就这样了,主要是protobuf的安装与配置,使用涉及的很少,后面有时间会加入更多的使用相关的内容
FAQ:
如果遇到:
protoc: error while loading shared libraries: libprotoc.so.10: cannot open shared object file: No such file or directory
解决方案
sudo ldconfig
参考文章:
https://github.com/google/protobuf
http://blog.csdn.net/whuqin/article/details/8730026