1.测试前提，参考先熟悉grpc测试demo:
参考官网：python 实现grpc client以及service :
https://grpc.io/docs/quickstart/python/
java实现client 和service:https://grpc.io/docs/quickstart/java/
细节我就不讲了：
主要说下.proto文件，他是实现grpc的基础，根据他产生契约helloworld_pb2，以及客户端服务端调用类：helloworld_pb2_grpc（核心调用client编写就靠他的Stub 类）：
生成契约和grpc client和 service 类
$ python -m grpc_tools.protoc -I ../../protos --python_out=. --grpc_python_out=. ../../protos/helloworld.proto
依赖文件：
grpcio==1.28.1
grpcio-tools==1.28.1
protobuf==3.11.3
coverage>=4.0
cython>=0.29.8
enum34>=1.0.4
#protobuf>=3.5.0.post1
six>=1.10
wheel>=0.29
setuptools==46.1.3
2.linux 环境搭建安装python3：
虚拟环境：基于virtualenv
安装依赖
3.安装ghz工具，安装go：
安装go环境linux教程：https://www.runoob.com/go/go-environment.html
ghza安装包下载：https://github.com/bojand/ghz/releases
wget https://github.com/bojand/ghz/releases/download/v0.52.0/ghz_0.52.0_Linux_x86_64.tar.gz
ghz 帮助文档：https://ghz.sh/docs/options
配置ghz和go环境变量vi/etc/profile：
export PATH=$PATH:/usr/local/go/bin
export PATH=$PATH:/project
source /etc/profile:
验证golang ,ghz 环境：
go version
ghz -h
4.启动grpc server:
编写一个简单的服务端grpc_server和对应的client 先mock下server可用，然后进行ghz工具压测server ：
[root@vm_master helloword]# cat grpc_client.py
import logging
import time
import grpc
import helloworld_pb2
import helloworld_pb2_grpc
import json
def run():
with grpc.insecure_channel('localhost:50051') as channel:
stub = helloworld_pb2_grpc.GreeterStub(channel)
req={"name":"jack","id":1001}
# transfer json object to bytes to send grpc request
body=json.dumps(req).encode("utf-8")
response = stub.SayHello(helloworld_pb2.HelloRequest(name=body))
# print(type(response.message))
print(response.message)
if __name__ == '__main__':
logging.basicConfig()
run()
grpc_server.py:
from concurrent import futures
import logging
import grpc
import helloworld_pb2
import helloworld_pb2_grpc
class Greeter(helloworld_pb2_grpc.GreeterServicer):
def SayHello(self, request, context):
return helloworld_pb2.HelloReply(message= request.name)
def serve():
server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
server.add_insecure_port('[::]:50051')
server.start()
server.wait_for_termination()
if __name__ == '__main__':
logging.basicConfig()
serve()
启动服务端 python grpc_server.py,在运行client测试，查看结果：
C:\Python37\python.exe D:/workspace/demos/python/helloword/grpc_client.py
{"name": "jack", "id": 1001}
Process finished with exit code 0
，接着进行压测：
前面已经安装好了ghz ，接着进行压力测试：
鉴于ghz 命令基于linux所以打算借助脚本调用 ghz 压力测试命令，以及请求参数构造：
脚本：
import subprocess
import json
def exe_cmd(args):
sub=subprocess.Popen(args,shell=False,stdout=subprocess.PIPE,stderr=subprocess.STDOUT)
out,err=sub.communicate()
return out.decode("utf-8")
def demo():
bytes_data={"name":"zhangsan","id":"10001"}
bytes_data=json.dumps(bytes_data).encode("utf-8")
args=["ghz","--skipTLS","--insecure","--proto","../../protos/helloworld.proto",
"--call","helloworld.Greeter.SayHello","--metadata",bytes_data,"-c","5","--qps","100","-z","1m","--connections","5","-t","20s","0.0.0.0:50051"]
print(exe_cmd(args))
if __name__ == '__main__':
demo()
这里输出默认是命令行展示结果：
[root@vm_master helloword]# python deso.py
Summary:
Count: 29761
Total: 60.01 s
Slowest: 71.66 ms
Fastest: 0.52 ms
Average: 3.63 ms
Requests/sec: 495.95
Response time histogram:
0.515 [1] |
7.630 [29219] |∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
14.744 [384] |∎
21.859 [133] |
28.973 [8] |
36.088 [2] |
43.202 [0] |
50.317 [3] |
57.431 [2] |
64.546 [4] |
71.660 [1] |
Latency distribution:
10 % in 1.67 ms
25 % in 2.03 ms
50 % in 3.36 ms
75 % in 4.82 ms
90 % in 5.76 ms
95 % in 6.37 ms
99 % in 12.27 ms
Status code distribution:
[OK] 29757 responses
[Unavailable] 2 responses
[Canceled] 2 responses
Error distribution:
[2] rpc error: code = Unavailable desc = transport is closing
[2] rpc error: code = Canceled desc = grpc: the client connection is closing
为了方便阅读，可以保存为html 只需添加参数 -o ./result.html -O html既可
args=["ghz","--skipTLS","--insecure","--proto","../../protos/helloworld.proto",
"--call","helloworld.Greeter.SayHello","--metadata",bytes_data,"-o","./result.html","-O","html","-c","5","-n","10","0.0.0.0:50051"]
html参考效果：https://ghz.sh/sample.html
output指标解释：https://ghz.sh/docs/output
注意事项：
def demo():
bytes_data={"name":"zhangsan","id":"10001"}
bytes_data=json.dumps(bytes_data).encode("utf-8")
args=["ghz","--skipTLS","--insecure","--proto","../../protos/helloworld.proto",
"--call","helloworld.Greeter.SayHello","--metadata",bytes_data,"-c","5","--qps","100","-z","1m","--connections","5","-t","20s","0.0.0.0:50051"]
print(exe_cmd(args))
这里bytes_data=里整数按字符串填写，否则go 转换出错，其次 一般 -d {"key":"value"}需要在proto文件定义type,这里为了通用传输字节，我直接按metadata元数据传输他会自动处理
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