def service_list_to_containers(execution: Execution,
service_list: List[Service],
placement=None) -> str:
"""Given a subset of services from an execution, tries to start them, return one of 'ok', 'requeue' for temporary failures and 'fatal' for fatal failures."""
backend = _get_backend()
ordered_service_list = sorted(service_list, key=lambda x: x.startup_order)
env_subst_dict = {
'execution_id': execution.id,
"execution_name": execution.name,
'user_name': execution.user_id,
'deployment_name': get_conf().deployment_name,
}
for service in execution.services:
env_subst_dict['dns_name#' + service.name] = service.dns_name
for service in ordered_service_list:
env_subst_dict['dns_name#self'] = service.dns_name
if placement is not None:
service.assign_backend_host(placement[service.id])
service.set_starting()
instance = ServiceInstance(execution, service, env_subst_dict)
try:
backend_id, ip_address, ports = backend.spawn_service(instance)
except ZoeStartExecutionRetryException as ex:
log.warning(
'Temporary failure starting service {} of execution {}: {}'.
format(service.id, execution.id, ex.message))
service.set_error(ex.message)
execution.set_error_message(ex.message)
terminate_execution(execution)
execution.set_scheduled()
return "requeue"
except ZoeStartExecutionFatalException as ex:
log.error(
'Fatal error trying to start service {} of execution {}: {}'.
format(service.id, execution.id, ex.message))
service.set_error(ex.message)
execution.set_error_message(ex.message)
terminate_execution(execution)
execution.set_error()
return "fatal"
except Exception as ex:
log.error('Fatal error trying to start service {} of execution {}'.
format(service.id, execution.id))
log.exception('BUG, this error should have been caught earlier')
execution.set_error_message(str(ex))
terminate_execution(execution)
execution.set_error()
return "fatal"
else:
log.debug('Service {} started'.format(instance.name))
service.set_active(backend_id, ip_address, ports)
return "ok"
def execution_submit(state: SQLManager, scheduler: ZoeBaseScheduler,
execution: Execution):
"""Submit a new execution to the scheduler."""
if _digest_application_description(state, execution):
execution.set_scheduled()
scheduler.incoming(execution)