协程-gevent

Posted 2020-09-18

协程用gevent实现, 依赖libevent和greenlet
###安装
1. 安装libevent
   yum install libevent

2. 安装easy_install
  【1】wget -q http://peak.telecommunity.com/dist/ez_setup.py
  【2】python ez_setup.py
  【3】使用easy_install 查看命令是否可用，如果不可用可以讲路径加入到PATH中

3. 安装greenlet
    【1】yum install python-devel
    【2】easy_install greenlet
4. 安装pip
   wget https://pypi.python.org/packages/11/b6/abcb525026a4be042b486df43905d6893fb04f05aac21c32c638e939e447/pip-9.0.1.tar.gz#md5=35f01da33009719497f01a4ba69d63c9
    tar zxf pip-9.0.1.tar.gz
    cd pip-9.0.1
    python setup.py build
    python setup.py install

5. 安装gevent
   wget http://pypi.python.org/packages/source/g/gevent/gevent-0.13.1.tar.gz#md5=5c1b03d9ce39fee4cfe5ea8befb1d4c4
   tar zxf gevent-0.13.1.tar.gz
   cd gevent-0.13
   python fetch_libevent.py
   python setup.py build
   python setup.py install

6. 安装request模块
    pip install requests

7. 安装dnspython模块
    wget http://www.dnspython.org/kits/1.12.0/dnspython-1.12.0.tar.gz
     tar -zxf dnspython-1.12.0.tar.gz
     cd dnspython-1.12.0
     python setup.py install


###案例1
#!/usr/bin/env python
# _*_coding:utf-8_*_

from gevent import monkey
import os
import gevent
import time
monkey.patch_socket()

class MyGeven:

    def __init__(self):
        self.data = {}

    def get_dig_domain(self, domain):
                ret = os.system(‘dig %s |egrep -v "^$|;" >>/tmp/tmpcheck‘ % (domain) )
        if ret:
            self.data[domain] = ret

    def gprobe(self, domain_list):
        jobs = []
        for domain in domain_list:
            jobs.append(gevent.spawn(self.get_dig_domain, domain))
        gevent.joinall(jobs)

if __name__ == ‘__main__‘:
    start_ts = time.time()
    print "start....."
    domain_list = [
            "www.baidu.com",
                "www.qq.com",
                "www.163.com",
    ]
    obj = MyGeven()
    obj.gprobe(domain_list)
    print "请求数:", len(domain_list), "耗时:", time.time() - start_ts, "s"
    print obj.data


###案例2:
#!/usr/bin/env python
# _*_coding:utf-8_*_
from gevent import monkey
import gevent
import time
monkey.patch_socket()
import requests

class MyGeven:

    def __init__(self):
        self.data = {}


    def get_url_data(self, url):

        ret = requests.get(url)
        if ret:
            self.data[url] = ret


    def gprobe(self, url_list):
        jobs = []
        for url in url_list:
            jobs.append(gevent.spawn(self.get_url_data, url))
        gevent.joinall(jobs)

if __name__ == ‘__main__‘:
    start_ts = time.time()
    print "start….."
    url_list = [
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
            "http://www.baidu.com",
                "http://www.qq.com",
                "http://www.163.com",
    ]
    obj = MyGeven()
    obj.gprobe(url_list)
    print "请求数:", len(url_list), "耗时:", time.time() - start_ts, "s"
    print obj.data

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