在远程机器上执行脚本时,为了能够保证脚本的实时性,我们一般会将脚本存放到SVN上,远程机器通过SVN的操作去更新脚本;
SVN更新脚本只需要2步就可以实现了,这个地方使用到pysvn库,看下实现
# 初始化client
self.client = pysvn.Client()
self.client.set_default_username(self.username)
self.client.set_default_password(util.decrypt_des(self.password))
#更新代码
self.client.update(self.localPath)
但是,在实际情况中,可能会出现update失败的情况,我们增加异常后,重新checkout的操作,如下
#判断更新是否成功
revision = None
try:
revision = self.client.update(self.localPath)
except:
log.exception(traceback.format_exc())
revision = None
if not os.path.exists(os.path.join(self.localPath, ".svn")):
revision = None
#更新失败,则重新checkout
if revision is None or revision[0].number == -1:
.......
self.client.checkout(self.url, self.localPath)
update异常一般这样就可以解决了,如果我们在比较复杂的环境下,比如,有些机器需要通过代理访问SVN,如何做呢?
svn通过代理,使用的方式是配置文件的方式,那我们需要将代理服务器信息,以文件写入的方式写到配置文件中,然后使用配置文件初始化svn对象即可,代码如下:
useProxy = util.get_prop("proxy.enable")
if useProxy != "False":
self._init_servers(configDir)
self.client = pysvn.Client(configDir)
else:
self.client = pysvn.Client()
self.client.set_default_username(self.username)
self.client.set_default_password(util.decrypt_des(self.password))
这样就ok了~最后附上全部的代码片段
class SVNInfo:
def __init__(self, **kwargs):
self.agent = agent.Agent()
if "id" in kwargs:
self.id = kwargs["id"]
if "url" in kwargs:
self.url = kwargs["url"]
if "username" in kwargs:
self.username = kwargs["username"]
if "password" in kwargs:
self.password = kwargs["password"]
if "localpath" in kwargs:
self.localPath = kwargs["localpath"]
if "startversion" in kwargs:
self.startVersion = kwargs["startversion"]
if "preversion" in kwargs:
self.preVersion = kwargs["preversion"]
def _init_servers(self, configDir):
proxyIP = util.get_prop("proxy.ip")
proxyPort = util.get_prop("proxy.port")
proxyUserName = util.get_prop("proxy.username")
proxyPwd = util.get_prop("proxy.password")
configStr = "[global]\r\n" \
"http-proxy-host = %s\r\n" \
"http-proxy-port = %s\r\n" \
"http-proxy-username = %s\r\n" \
"http-proxy-password = %s" % (proxyIP, proxyPort, proxyUserName, proxyPwd)
serversFilePath = os.path.join(configDir, "servers")
serverFile = codecs.open(serversFilePath, "w", "utf-8")
serverFile.write(configStr)
serverFile.close()
def init(self):
self.localPath = util.get_act_str(self.localPath, self.agent.envDict)
configDir = os.path.join(tempfile.gettempdir(), "pysvn")
if not os.path.exists(configDir):
os.makedirs(configDir)
useProxy = util.get_prop("proxy.enable")
if useProxy != "False":
self._init_servers(configDir)
self.client = pysvn.Client(configDir)
else:
self.client = pysvn.Client()
self.client.set_default_username(self.username)
self.client.set_default_password(util.decrypt_des(self.password))
def update(self):
try:
self.init()
revision = None
try:
revision = self.client.update(self.localPath)
except:
log.exception(traceback.format_exc())
revision = None
if not os.path.exists(os.path.join(self.localPath, ".svn")):
revision = None
if revision is None or revision[0].number == -1:
log.exception("into rename")
bakName = os.path.basename(self.localPath) + "_" + util.format_time()
os.popen("rename \"%s\" \"%s\"" % (self.localPath, bakName))
log.exception("into checkout")
self.client.checkout(self.url, self.localPath)
except:
log.exception(traceback.format_exc())