def get_dispatcher():
from mobyle.execution_engine.systems.execution_system import load_execution_classes
from mobyle.common.job_routing_model import ExecutionSystem
exec_klass = load_execution_classes()
exec_systems = {}
all_exec_in_conf = connection.ExecutionSystem.fetch({})
for exec_conf in all_exec_in_conf:
try:
klass = exec_klass[exec_conf["class"]]
except KeyError, err:
raise MobyleError('class {0} does not exist check your config'.format(exec_conf["class"]))
opts = exec_conf["drm_options"]
if opts is None:
opts = {}
native_specifications = exec_conf["native_specifications"]
if native_specifications:
opts["native_specifications"] = native_specifications
try:
exec_systems[exec_conf["_id"]] = klass(exec_conf["_id"], **opts)
except Exception, err:
msg = 'cannot instantiate class {0} : {1}'.format(exec_conf["class"]), err
_log.error(msg)
raise MobyleError(msg)
def get_execution_system(self, exec_name):
"""
fetch the execution systems configuration corresponding to exec_name from DB
:param exec_name: the name of the Execution system to fetch
:type exec_name: string
:returns: :class:`mobyle.executon_engine.systems.exceution_system.ExecutionSytem` object
"""
try:
exec_conf = connection.ExecutionSystem.fetch_one({'_id' : exec_name})
except Exception, err:
self._log.error(str(err), exc_info = True)
raise err
exec_klasses = load_execution_classes()
try:
klass = exec_klasses[exec_conf["class"]]
except KeyError, err:
raise MobyleError('class {0} does not exist check your config'.format(exec_conf["class"]))
opts = exec_conf["drm_options"]
if opts is None:
opts = {}
native_specifications = exec_conf["native_specifications"]
if native_specifications:
opts["native_specifications"] = native_specifications
try:
execution_system = klass(exec_conf["_id"], **opts)
except Exception, err:
msg = 'cannot instantiate class {0} : {1}'.format(exec_conf["class"]), err
self._log.error(msg)