Python使用protobuf序列化和反序列化的实现

# 如果gcc版本较低，需要升级gcc
wget https://main.qcloudimg.com/raw/d7810aaf8b3073fbbc9d4049c21532aa/protobuf-2.6.1.tar.gz
tar -zxvf protobuf-2.6.1.tar.gz -C /usr/local/ && cd /usr/local/protobuf-2.6.1
./configure 
make && make install
# 可以在/etc/profile或者~/.bash_profile末尾设置永久有效
export PATH=$PATH:/usr/local/protobuf-2.6.1/bin

[root@CodeOnTheRoad ~]# protoc --version
libprotoc 2.6.1

package cls;
message Log
{
 message Content
 {
  required string key= 1; // 每组字段的 key
  required string value = 2; // 每组字段的 value
 }
 required int64time  = 1; // 时间戳，UNIX时间格式
 repeated Content contents = 2; // 一条日志里的多个kv组合
}
message LogTag
{
 required string key = 1;
 required string value  = 2;
}
message LogGroup
{
 repeated Log logs  = 1; // 多条日志合成的日志数组
 optional string contextFlow = 2; // 目前暂无效用
 optional string filename = 3; // 日志文件名
 optional string source= 4; // 日志来源，一般使用机器IP
 repeated LogTag logTags  = 5;
}
message LogGroupList
{
 repeated LogGroup logGroupList = 1; // 日志组列表
}
 

protoc cls.proto --python_out=./ 

import cls_pb2 as cls
import time
# 构建protoBuf日志内容
LogLogGroupList = cls.LogGroupList()
LogGroup = LogLogGroupList.logGroupList.add()
LogGroup.contextFlow = "1"
LogGroup.filename = "python.log"
LogGroup.source = "localhost"
LogTag = LogGroup.logTags.add()
LogTag.key = "key"
LogTag.value = "value"
Log = LogGroup.logs.add()
Log.time = int(round(time.time() * 1000000))
Content = Log.contents.add()
Content.key = "Hello"
Content.value = "World"
print(LogLogGroupList)
# 序列化
data = LogLogGroupList.SerializeToString()
print(data)

# 反序列化
LogLogGroupList = cls.LogGroupList()
LogLogGroupList.ParseFromString(data)
print(LogLogGroupList)