Jenkins 持续化部署实例
#!/usr/bin/env python#coding=utf-8
import urllib,urllib2
import os,sys
import hashlib,tarfile
import shutil
#定义分发服务器上用的到变量，最好配个dns服务器，供内部使用
URL_LASTVER = "http://192.168.1.107/wordpress/lastver"
URL_ONLINEVER = "http://192.168.1.107/wordpress/onlinever"
URL_PKG = "
#定义本地路径变量
LOCAL_DOWNLOAD = "/data/web/wordpress/local/download/" #客户端系下载的tar包
LOCAL_DEPLOY = "/data/web/wordpress/local/deploy/" #客户端解压使用版本目录
DOC_WWW = "/data/web/wordpress/local/www" #软链 至 worpress 版本
TOBE_KEEP = 2 #要保留的版本数量
WHITE_LST = []#禁止删除版本的白名单
#定义用到的文件名字
APP_NAME = "wordpress"
LASTVER = urllib2.urlopen(URL_LASTVER).read().strip() #读取最新版本号
URL_LAST_PKG = URL_PKG + "%s-%s.tar.gz" % (APP_NAME,LASTVER) #服务端tar包
LOCAL_LAST_PKG = os.path.join(LOCAL_DOWNLOAD + "%s-%s.tar.gz" % (APP_NAME,LASTVER)) #客户端tar包
ONLINEVER = urllib2.urlopen(URL_ONLINEVER).read().strip() #读取在线版本号
LOCAL_ONLINE_PKG = os.path.join(LOCAL_DEPLOY + "%s-%s" % (APP_NAME,ONLINEVER)) #在线使用的版本
#初始化本地目录
def init():
if not os.path.exists(LOCAL_DOWNLOAD):
os.makedirs(LOCAL_DOWNLOAD)
if not os.path.exists(LOCAL_DEPLOY):
os.makedirs(LOCAL_DEPLOY)
#检查最新的版本并下载
def checkMd5file(f):#由md5判断下载是否正确
URL_LAST_PKG_MD5 = f + ".md5file"
URL_MD5 = urllib2.urlopen(URL_LAST_PKG_MD5).read().strip()
with open(LOCAL_LAST_PKG) as fd:
m = hashlib.md5(fd.read()).hexdigest()
if m == URL_MD5:
return True
return False
def downLoad(f):
# req = urllib2.urlopen(f)
# data = req.read()
# with open(LOCAL_LAST_PKG,'wb') as fd:
# fd.write(data)# 一次性读完，有点占内存
req = urllib2.urlopen(f)
n = 1
while True:
data = req.read(4096) #以4096为单位下载，节省内存
if not data:
break
if n == 1:
with open(LOCAL_LAST_PKG,'wb') as fd:
fd.write(data)
n += 1
elif n > 1:
with open(LOCAL_LAST_PKG,'a') as fd:
fd.write(data)
n += 1
if checkMd5file(URL_LAST_PKG):
return True
return False
def checkLastVersion():
WHITE_LST.append(LASTVER)#加入白名单，禁止删除
if not os.path.exists(LOCAL_LAST_PKG):
downLoad(URL_LAST_PKG)
extract_dir = os.path.join(LOCAL_DEPLOY + "%s-%s" % (APP_NAME,LASTVER))
if not os.path.exists(extract_dir): #解压本地download下的包
tar = tarfile.open(LOCAL_LAST_PKG)
tar.extractall(LOCAL_DEPLOY)
#tarFile(LOCAL_LAST,LOCAL_DEPLOY)
#解压下载的tar包
#def tarFile(fn,d):
# tar = tarfile.open(fn)
# tar.extracall('d')
#检查在线的版本，替换软链
def checkOnlineVersion():
WHITE_LST.append(ONLINEVER)#加入白名单，禁止删除
if os.path.exists(LOCAL_ONLINE_PKG):
if not os.path.exists(DOC_WWW): #此路径是指源目录
os.symlink(LOCAL_ONLINE_PKG,DOC_WWW)
else:
target = os.readlink(DOC_WWW)
if target != LOCAL_ONLINE_PKG:
os.unlink(DOC_WWW)
os.symlink(LOCAL_ONLINE_PKG,DOC_WWW)
#对版本号进行排序，删除多余不用的版本
def versionSort(l):
from distutils.version import LooseVersion
vs =
vs.sort()
return
def clear():
DOWNLOAD_LST = [:-7] for i in os.listdir(LOCAL_DOWNLOAD)] #取download下的版本号
DEPLOY_LST = for i in os.listdir(LOCAL_DEPLOY)]
tobe_del_download = versionSort(DOWNLOAD_LST)[:-TOBE_KEEP]
tobe_del_deploy = versionSort(DEPLOY_LST)[:-TOBE_KEEP]
for d in tobe_del_download:
fn = os.path.join(LOCAL_DOWNLOAD + "%s-%s.tar.gz" % (APP_NAME,d))
if d not in WHITE_LST: #不删除使用的和最新的版本
os.remove(fn)
for d in tobe_del_deploy:
fn = os.path.join(LOCAL_DEPLOY + "%s-%s" % (APP_NAME,d))
if d not in WHITE_LST: #不删除使用的和最新的版本
#os.remove(fn) #这只能删除空目录
shutil.rmtree(fn)
#执行时加个文件锁，避免重复执行
def lockFile(f):
if os.path.exists(f):
print "%s is runing......" % __file__
sys.exit()
with open(f,'w') as fd:
fd.write(str(os.getpid()))
def unlockFile(f): #解锁文件
if os.path.exists(f):
os.remove(f)
#主程序
if __name__=='__main__':
lockFile('/tmp/.deploy.lock')
init()
checkLastVersion()
print "checkLastVersion"
checkOnlineVersion()
print "checkOnlineVersion"
clear()
print "clear"
#time.sleep(10)
unlockFile('/tmp/.deploy.lock')
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