def register(self, namespace, name, locktype):
fullName = "%s.%s" % (namespace, name)
if fullName in self.resources:
raise ValueError(
"Owner %s: acquire: resource %s is already acquired" %
(str(self), fullName))
manager = ResourceManager.getInstance()
self.lock.acquire()
try:
if fullName in self.requests:
raise ValueError("request %s is already requested by %s" %
(str(fullName), str(self)))
try:
request = manager.registerResource(namespace, name, locktype,
self._onRequestFinished)
except ValueError, ex:
self.log.debug(
"%s: request for '%s' could not be processed (%s)" %
(str(self), fullName, str(ex)))
raise se.InvalidResourceName()
except KeyError, ex:
self.log.debug("%s: resource '%s' does not exist" %
(str(self), fullName))
raise se.ResourceDoesNotExist()
def acquire(self,
namespace,
name,
locktype,
timeout_ms,
raiseonfailure=None):
fullName = "%s.%s" % (namespace, name)
if raiseonfailure is None:
raiseonfailure = self.raiseonfailure
manager = ResourceManager.getInstance()
if timeout_ms is not None:
timeout = timeout_ms / 1000.0
self.lock.acquire()
try:
try:
if fullName in self.resources:
raise ValueError(
"Owner %s: acquire: resource %s is already acquired" %
(str(self), fullName))
try:
resource = manager.acquireResource(namespace, name,
locktype, timeout)
self.resources[resource.fullName] = resource
if hasattr(self.ownerobject, "resourceAcquired"):
self.ownerobject.resourceAcquired(
namespace, name, locktype)
except RequestTimedOutError:
self.log.debug(
"%s: request for '%s' timed out after '%f' seconds" %
(str(self), fullName, timeout))
raise se.ResourceTimeout()
except ValueError, ex:
self.log.debug(
"%s: request for '%s' could not be proccessed (%s)" %
(str(self), fullName, str(ex)))
raise se.InvalidResourceName()
except KeyError, ex:
self.log.debug("%s: resource '%s' does not exist" %
(str(self), fullName))
except Exception, ex:
self.log.warn(
"Unexpected exception caught while owner '%s' tried to acquire '%s'"
% (str(self), fullName),
exc_info=True)
raise se.ResourceException()
def register(self, namespace, name, locktype):
fullName = "%s.%s" % (namespace, name)
if fullName in self.resources:
raise ValueError("Owner %s: acquire: resource %s is already "
"acquired" % (self, fullName))
manager = ResourceManager.getInstance()
self.lock.acquire()
try:
if fullName in self.requests:
raise ValueError("request %s is already requested by %s" %
(fullName, self))
try:
request = manager.registerResource(namespace, name, locktype,
self._onRequestFinished)
except ValueError as ex:
self.log.debug(
"%s: request for '%s' could not be processed "
"(%s)", self, fullName, ex)
raise se.InvalidResourceName()
except KeyError:
self.log.debug("%s: resource '%s' does not exist", self,
fullName)
raise se.ResourceDoesNotExist()
except Exception:
self.log.warn(
"Unexpected exception caught while owner '%s' "
"tried to acquire '%s'",
self,
fullName,
exc_info=True)
raise se.ResourceException()
if hasattr(self.ownerobject, "resourceRegistered"):
self.ownerobject.resourceRegistered(namespace, name, locktype)
self.requests[fullName] = request
finally:
self.lock.release()
self.log.debug("%s: request registered %s", self, request)