forked from multiangle/Distributed_Microblog_Spider
/
server_proxy.py
442 lines (376 loc) · 16.3 KB
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server_proxy.py
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__author__ = 'multiangle'
"""
NAME: server_proxy.py
PY_VERSION: python3.4
FUNCTION: This part is used to get large number of proxy
from certain http proxy website, then verify if
they are useful. Useful proxy is saved in cache
and provided to client to get info from website
VERSION: _0.2_
UPDATE HISTORY:
_0.2_: add the partition to monitor the state of proxy pool
_0.1_: the first edition
"""
#======================================================================
#----------------import package--------------------------
# import python package
from multiprocessing import Process
import os
import re,json
import time
import threading
import urllib.request as request
import random
# import from this folder
from server_config import GET_PROXY_URL,PROXY_POOL_SIZE,PROXY_PATH #about proxy
from server_config import VERIFY_PROXY_THREAD_NUM,MAX_VALID_PROXY_THREAD_NUM
import server_config
import File_Interface as FI
from DB_Interface import MySQL_Interface
#=======================================================================
class proxy_manager(threading.Thread):
def __init__(self,proxy_pool,proxy_lock,proxy_pool_size=PROXY_POOL_SIZE):
threading.Thread.__init__(self)
self.proxy_pool=proxy_pool
self.proxy_pool_size=proxy_pool_size
self.proxy_lock=proxy_lock
self.start_up()
def start_up(self):
"""
function: used to recover info when start up this process
for example, read stored proxy list
"""
pass
#TODO
def run(self):
"""
function: The main circle of this process.
Monitor the state of proxy pool
"""
thread_pool=[]
run_value=[int(self.proxy_pool_size/1),int(self.proxy_pool_size/2)]
MAX_VALID_PROXY_THREAD_NUM=2 # maximum num of thread of find valid proxy
for i in range(MAX_VALID_PROXY_THREAD_NUM): # initialize of thread pool
temp_t=find_valid_proxy(self.proxy_pool,self.proxy_lock)
thread_pool.append(temp_t)
if run_value.__len__()!=MAX_VALID_PROXY_THREAD_NUM: # check data formation
raise ValueError('the length of run_value is not equal to '
'MAX_VALID_PROXY_THREAD_NUM')
maintain_proxy_thread=keep_proxy_valid(self.proxy_pool)
maintain_proxy_thread.start()
state_persistance_thread=state_persistance(self.proxy_pool)
state_persistance_thread.start()
while (True):
time.sleep(0.1)
for i in range(thread_pool.__len__()):
if not thread_pool[i].is_alive():
if self.proxy_pool.size()<=run_value[i]:
thread_pool[i]=find_valid_proxy(self.proxy_pool,self.proxy_lock)
thread_pool[i].start()
if not maintain_proxy_thread.is_alive():
maintain_proxy_thread=keep_proxy_valid(self.proxy_pool)
maintain_proxy_thread.start()
if not state_persistance_thread.is_alive():
state_persistance_thread=state_persistance(self.proxy_pool)
state_persistance_thread.start()
class state_persistance(threading.Thread):
"""
function: monitor and note the state of proxy pool,including the current
size of proxy pool, the input speed of new proxy , and the output speed.
and manage the average size oj of proxy_pool class
"""
def __init__(self,proxy_pool):
threading.Thread.__init__(self)
self.proxy_pool=proxy_pool
self.dbi=MySQL_Interface()
def run(self):
while True:
time_stick=time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))
current_size=self.proxy_pool.size()
[input,output]=self.proxy_pool.update_proxy_state()
insert_value=[[current_size,time_stick,input,output]]
self.dbi.insert_asList('proxy_table',insert_value,unique=True)
time.sleep(server_config.PROXY_MONITOR_GAP)
class find_valid_proxy(threading.Thread):
"""
function: Get raw proxy list,check them ,and find valide proxy list
"""
def __init__(self,proxy_pool,proxy_lock):
threading.Thread.__init__(self)
self.proxy_pool=proxy_pool #proxy pool
self.proxy_lock=proxy_lock
self.raw_proxy=[]
self.raw_proxy_lock=threading.Lock()
def run(self):
self.get_raw_proxy()
self.threads=[]
for i in range(VERIFY_PROXY_THREAD_NUM):
t=check_proxy(self.raw_proxy,self.proxy_pool,self.raw_proxy_lock,self.proxy_lock)
self.threads.append(t)
for t in self.threads:
t.start()
def get_raw_proxy(self):
RAW_PROXY_RATIO=5 # the ratio of raw and valid proxy
current_proxy_num=self.proxy_pool.size()
fetch_size=max(0,PROXY_POOL_SIZE-current_proxy_num)*RAW_PROXY_RATIO+1
url=GET_PROXY_URL.format(NUM=fetch_size)
try:
time.sleep(random.randint(2,2*MAX_VALID_PROXY_THREAD_NUM))
res=request.urlopen(url)
res=res.read()
res=str(res,encoding='utf-8')
self.raw_proxy=res.split('\r\n')
if self.raw_proxy.__len__()<fetch_size:
print('*** warning: find_valid_proxy -> get_raw_proxy: '
'the proxy num got from web is not enough \n '
'the wanted size is {want_size}, the gotten size is {gotten_size}'
.format(want_size=fetch_size,gotten_size=str(self.raw_proxy.__len__())))
else:
print('get {num} proxy from website'.format(num=fetch_size))
except Exception as e:
print('error: find_valid_proxy -> get_raw_proxy: ',e)
# if can't get proxy ,sleep for 1 sec , then try again
try:
time.sleep(random.randint(2,2*MAX_VALID_PROXY_THREAD_NUM))
res=request.urlopen(url).read()
res=str(res,encoding='utf-8')
self.raw_proxy=res.split('\r\n')
if self.raw_proxy.__len__()<fetch_size:
print('*** warning: find_valid_proxy -> get_raw_proxy: '
'the proxy num got from web is not enough \n '
'the wanted size is {want_size}, the gotten size is {gotten_size}'
.format(want_size=fetch_size,gotten_size=str(self.raw_proxy.__len__())))
except Exception as e:
print('error: find_valid_proxy -> get_raw_proxy: ',e)
# raise IOError('Unable to get raw proxy from website')
print('Unable to get raw proxy from website')
class check_proxy(threading.Thread):
def __init__(self,raw_proxy,proxy_pool,raw_proxy_lock,proxy_lock):
threading.Thread.__init__(self)
self.raw_proxy=raw_proxy
self.proxy_pool=proxy_pool
self.raw_proxy_lock=raw_proxy_lock
self.proxy_lock=proxy_lock
def run(self):
while(True):
if not self.raw_proxy: # if raw_proxy is empty ,end this threading
break
self.raw_proxy_lock.acquire()
current_raw_proxy=self.raw_proxy.pop(0)
self.raw_proxy_lock.release()
handler=request.ProxyHandler({'http':'http://%s'%(current_raw_proxy)})
self.opener=request.build_opener(handler)
testurl='http://m.weibo.cn/page/tpl?containerid=1005051221171697_-_FOLLOWERS&page=3'
t1=time.time()
try:
page=self.getData(testurl,timeout=10)
page=re.findall(r'"card_group":.+?]}]',page)[0]
page='{'+page[:page.__len__()-1]
page=json.loads(page)
temp_list=[self.card_group_item_parse(x) for x in page['card_group']]
usetime=time.time()-t1
self.proxy_lock.acquire()
self.proxy_pool.add([[current_raw_proxy,usetime]])
self.proxy_lock.release()
except Exception as e:
pass
def getData(self,url,timeout=10):
headers= {'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) '
'AppleWebKit/600.1.3 (KHTML, like Gecko) '
'Version/8.0 Mobile/12A4345d Safari/600.1.4'}
req=request.Request(url,headers=headers)
result=self.opener.open(req,timeout=timeout)
return result.read().decode('utf-8')
def card_group_item_parse(self,sub_block):
"""
:param user_block : json type
:return: user : dict type
"""
user_block=sub_block['user']
user_block_keys=user_block.keys()
user={}
if 'profile_url' in user_block_keys:
user['basic_page']=user_block['profile_url']
if 'screen_name' in user_block_keys:
user['name']=user_block['screen_name']
if 'desc2' in user_block_keys:
user['recent_update_time']=user_block['desc2']
if 'desc1' in user_block_keys:
user['recent_update_content']=user_block['desc1']
if 'gender' in user_block_keys:
user['gender']=('male' if user_block['gender']=='m' else 'female')
if 'verified_reason' in user_block_keys:
user['verified_reason']=user_block['verified_reason']
if 'profile_image_url' in user_block_keys:
user['profile']=user_block['profile_image_url']
if 'statuses_count' in user_block_keys:
temp=user_block['statuses_count']
if isinstance(temp,str):
temp=int(temp.replace('万','0000'))
user['blog_num']=temp
if 'description' in user_block_keys:
user['description']=user_block['description']
if 'follow_me' in user_block_keys:
user['follow_me']=user_block['follow_me']
if 'id' in user_block_keys:
user['uid']=user_block['id']
if 'fansNum' in user_block_keys:
temp=user_block['fansNum']
if isinstance(temp,str):
temp=int(temp.replace('万','0000'))
user['fans_num']=temp
return user
class proxy_pool():
"""
Core Data: proxy_pool ,formation as [[],[],[]]
Method: get(num)
add(data)
"""
def __init__(self):
self.proxy=[]
self.ave_proxy_size=0 # used to monitor the state of proxy pool
self.proxy_size_list=[]
self.input_speed=0
self.output_speed=0
def add(self,data):
"""
Data Formation: each item be formation of list[[],[],...,[]]
[[ip:port(str),timedelay(float)],[ip:port(str),timedelay(float)]]
and so on
"""
self.proxy=data+self.proxy
if isinstance(data,list) and data.__len__()>0:
self.input_speed+=data.__len__()
def insert(self,single_data):
"""
Data Formation: each item be formation of
[ip:port(str),timedelay(float)] and so on
"""
self.proxy.insert(0,single_data)
self.input_speed+=1
def sort(self): # sort according to the timedelay
pass
#TODO
def empty(self): #清空proxy列表
self.output_speed+=self.proxy.__len__()
self.proxy=[]
def get(self,num): # return [[]...[]]
if self.proxy.__len__()==0:
return []
if self.proxy.__len__()<num:
num=self.proxy.__len__()
res=[x for x in self.proxy[0:num]]
self.proxy=self.proxy[num:]
self.output_speed+=num
return res
def pop(self):
if self.proxy.__len__()==0:
return []
self.output_speed+=1
return self.proxy.pop()
def size(self):
return self.proxy.__len__()
def get_ave_proxy_size(self):
return self.ave_proxy_size
def update_proxy_state(self): # return the value of in&output speed
if self.proxy_size_list.__len__()>server_config.PROXY_SIZE_STATE_LIST_LEN:
self.proxy_size_list.pop()
self.proxy_size_list.insert(0,self.proxy.__len__())
else:
self.proxy_size_list.insert(0,self.proxy.__len__())
self.ave_proxy_size=int(sum(self.proxy_size_list)/self.proxy_size_list.__len__())
a=self.input_speed # and reset these two values as 0
b=self.output_speed
self.input_speed=0
self.output_speed=0
return [a,b]
class keep_proxy_valid(threading.Thread):
def __init__(self,proxy_pool):
threading.Thread.__init__(self)
self.proxy_pool=proxy_pool
def run(self):
while True:
if self.proxy_pool.size()==0:
time.sleep(0.5)
continue
try:
c_proxy=self.proxy_pool.pop()[0]
except:
time.sleep(0.5)
continue
# url='http://m.sina.cn/'
url='http://m.weibo.cn/page/tpl?containerid=1005051221171697_-_FOLLOWERS&page=3'
handler=request.ProxyHandler({'http':'http://%s'%(c_proxy)})
t_start=time.time()
try:
page=self.getData(url,handler,timeout=5)
page=re.findall(r'"card_group":.+?]}]',page)[0]
page='{'+page[:page.__len__()-1]
page=json.loads(page)
temp_list=[self.card_group_item_parse(x) for x in page['card_group']]
usetime=time.time()-t_start
self.proxy_pool.insert([c_proxy,usetime])
print('proxy {proxy} is valid, insert it'.format(proxy=c_proxy))
except Exception as e:
print(e)
print('proxy {proxy} is invalid ,drop it'.format(proxy=c_proxy))
def getData(self,url,handler,timeout=10):
headers= {'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) '
'AppleWebKit/600.1.3 (KHTML, like Gecko) '
'Version/8.0 Mobile/12A4345d Safari/600.1.4'}
req=request.Request(url,headers=headers)
opener=request.build_opener(handler)
page=opener.open(req,timeout=timeout)
return page.read().decode('utf-8')
def card_group_item_parse(self,sub_block):
"""
:param user_block : json type
:return: user : dict type
"""
user_block=sub_block['user']
user_block_keys=user_block.keys()
user={}
if 'profile_url' in user_block_keys:
user['basic_page']=user_block['profile_url']
if 'screen_name' in user_block_keys:
user['name']=user_block['screen_name']
if 'desc2' in user_block_keys:
user['recent_update_time']=user_block['desc2']
if 'desc1' in user_block_keys:
user['recent_update_content']=user_block['desc1']
if 'gender' in user_block_keys:
user['gender']=('male' if user_block['gender']=='m' else 'female')
if 'verified_reason' in user_block_keys:
user['verified_reason']=user_block['verified_reason']
if 'profile_image_url' in user_block_keys:
user['profile']=user_block['profile_image_url']
if 'statuses_count' in user_block_keys:
temp=user_block['statuses_count']
if isinstance(temp,str):
temp=int(temp.replace('万','0000'))
user['blog_num']=temp
if 'description' in user_block_keys:
user['description']=user_block['description']
if 'follow_me' in user_block_keys:
user['follow_me']=user_block['follow_me']
if 'id' in user_block_keys:
user['uid']=user_block['id']
if 'fansNum' in user_block_keys:
temp=user_block['fansNum']
if isinstance(temp,str):
temp=int(temp.replace('万','0000'))
user['fans_num']=temp
return user
def proxy_info_print(str_info,type='NORMAL'): # decide if normal of key infomation should be print
from server_config import PROXY_NORMAL_INFO_PRINT
if type=='NORMAL':
if PROXY_NORMAL_INFO_PRINT:
print(str_info)
if __name__=='__main__':
proxy_lock=threading.Lock()
proxy=proxy_pool()
t=proxy_manager(proxy,proxy_lock)
t.start()
while True:
time.sleep(0.1)
print(proxy.size())