性能测试 - Locust TCP socket client

性能测试 - Locust TCP socket client

Max.Bai

2017-04

0. 背景

Locust 是性能测试工具，但是默认只支持http协议，就是默认只有http的client，需要其他协议的测试必须自己扩展对于的client，比如下面的TCP client。

1. Tcp socket client 类

import time
import random
# from socket import socket, AF_INET, SOCK_STREAM
import socket
from locust import Locust, TaskSet, events, task



class TcpSocketClient(socket.socket):
    def __init__(self, af_inet, socket_type):
        super(TcpSocketClient, self).__init__(af_inet, socket_type)

    def connect(self, addr):
        start_time = time.time()
        try:
            super(TcpSocketClient, self).connect(addr)
        except Exception as e:
            total_time = int((time.time() - start_time) * 1000)
            events.request_failure.fire(request_type="tcpsocket", name="connect", response_time=total_time, exception=e)
        else:
            total_time = int((time.time() - start_time) * 1000)
            events.request_success.fire(request_type="tcpsocket", name="connect", response_time=total_time, response_length=0)
        
    def send(self, msg):
        start_time = time.time()
        try:
            super(TcpSocketClient, self).send(msg)
        except Exception as e:
            total_time = int((time.time() - start_time) * 1000)
            events.request_failure.fire(request_type="tcpsocket", name="send", response_time=total_time, exception=e)
        else:
            total_time = int((time.time() - start_time) * 1000)
            events.request_success.fire(request_type="tcpsocket", name="send", response_time=total_time, response_length=0)

    def recv(self, bufsize):
        recv_data = ''
        start_time = time.time()
        try:
            recv_data = super(TcpSocketClient, self).recv(bufsize)
        except Exception as e:
            total_time = int((time.time() - start_time) * 1000)
            events.request_failure.fire(request_type="tcpsocket", name="recv", response_time=total_time, exception=e)
        else:
            total_time = int((time.time() - start_time) * 1000)
            events.request_success.fire(request_type="tcpsocket", name="recv", response_time=total_time, response_length=0)
        return recv_data

2. Locust 类

class TcpSocketLocust(Locust):
    """
    This is the abstract Locust class which should be subclassed. It provides an TCP socket client
    that can be used to make TCP socket requests that will be tracked in Locust's statistics.
    """
    def __init__(self, *args, **kwargs):
        super(TcpSocketLocust, self).__init__(*args, **kwargs)
        self.client = TcpSocketClient(socket.AF_INET, socket.SOCK_STREAM)
        ADDR = (self.host, self.port)
        self.client.connect(ADDR)

3. 应用代码

class TcpTestUser(TcpSocketLocust):
    
    host = "127.0.0.1"
    port = 12345
    min_wait = 100
    max_wait = 1000

    class task_set(TaskSet):        
        @task
        def send_data(self):
            self.client.send(random_str())
            data = self.client.recv(2048).decode()
            print(data)


if __name__ == "__main__":
    user = TcpTestUser()
    user.run()

4. Tcp server 方便测试使用

#!/usr/bin/env python3
#-*- coding:utf-8 -*-

import time
from socket import socket, AF_INET, SOCK_STREAM
import threading

buffsize = 2048

def tcplink(sock, addr):
    # print 'Accept new connection from %s:%s...' % addr
    sock.send('Welcome!')
    while True:
        try:
            # data = sock.recv(buffsize)
            data = sock.recv(buffsize).decode()
            time.sleep(1)
            if data == 'exit' or not data:
                break
            sock.send('Hello, %s!' % data)
        except Exception as e:
            print(str(e))
            break
    sock.close()
    print 'Connection from %s:%s closed.' % addr

def main():
    host = ''
    port = 12345

    ADDR = (host,port)

    tctime = socket(AF_INET,SOCK_STREAM)
    tctime.bind(ADDR)
    tctime.listen(3)

    print('Wait for connection ...')
    while True:
        sock,addr = tctime.accept()
        print 'Accept new connection from %s:%s...' % addr

        t = threading.Thread(target=tcplink, args=(sock, addr))
        t.start()

if __name__=="__main__":
    main()