def func(a):
try:
log.f("ddd")
raise exception.EPNoNodeError("def")
except:
print sys.exc_info()
log.f("abc")
def _run_catch(self, func, path, path_is_dir=False):
"""
执行func并捕获异常，将文件系统异常转换为对应的异常对象
"""
ospath = self._base + path
try:
if os.path.exists(ospath):
if path_is_dir:
if os.path.isdir(ospath):
return func()
else:
if os.path.isfile(ospath):
# 判断文件是否过期，过期直接报错
mtime = os.stat(ospath).st_mtime
if mtime < time.time() - self._timeout:
self.delete_node(path, True)
else:
return func()
else:
return func()
raise exception.EPNoNodeError()
except exception.EPNoNodeError as e:
log.r(e, "Node not exist:{}".format(path))
except Exception as e:
log.r(exception.EPIOError(), "Request I/O Error")
def _run_catch(cls, func, path, path_is_dir=False):
"""
执行func并捕获异常，将kazoo异常转换为对应的异常对象
"""
try:
if not os.path.exists(path) or (path_is_dir and not os.path.isdir(path)):
raise exception.EPNoNodeError()
return func()
except exception.EPNoNodeError as e:
log.r(e, "Node not exist:{}".format(path))
except:
log.r(exception.EPIOError(), "Request I/O Error")
def _deletenode(path=np):
# 由于redis不支持事务，所以此处并不会区分节点是否存在，均直接set数据
children = self.get_children(path)
for child_node in children:
_deletenode("/".join([path, child_node]))
node_path, node_name = self._split_node_name(path)
ret = self._handle.evalsha(self._delete_lua_sha, 2, node_path,
node_name)
if ret == -1:
raise exception.EPNoNodeError("delete node[%s] error:%s" %
(path, "Node has child"))
def _run_catch(cls, func):
"""
执行func并捕获异常，将kazoo异常转换为对应的异常对象
"""
import kazoo
try:
return func()
except kazoo.interfaces.IHandler.timeout_exception:
raise exception.EPConnectTimeout()
except kazoo.exceptions.NoNodeError:
raise exception.EPNoNodeError()
except:
log.r(exception.EPIOError(), "Request I/O Error")
def _run_catch(cls, func):
"""
执行func并捕获异常，将kazoo异常转换为对应的异常对象
"""
import kazoo
try:
return func()
except kazoo.exceptions.NoNodeError:
raise exception.EPNoNodeError()
except kazoo.exceptions.ZookeeperError:
log.f("zk fail")
raise exception.EPServerError()
except Exception as e:
log.r(exception.EPIOError(), "Requesst I/O Error")
def _createnode(np=path):
node_path, node_name = self._split_node_name(np)
errmsg = {
-1: "Node has ttl or parents-node not exists",
-2: "Node exists(in parents-node record)",
-3: "Node exists"
}
if not self.exists(node_path) and node_path != "/":
if makepath:
self.create_node(node_path, makepath=True)
else:
raise exception.EPNoNodeError(node_path + " not exists")
seq = 1 if sequence else 0
tm = long(time.time()) + self._timeout if ephemeral else 0
ret = self._handle.evalsha(self._new_lua_sha, 2, node_path,
node_name, value, seq, tm)
if ret < 0:
raise exception.EPIOError("redis error when create[%s:%s]:%s" %
(node_path, node_name, errmsg[ret]))
if ephemeral:
self._new_touch(ret)
return ret