def _parse(self,
root_pipeline_data=None,
params=None,
is_subprocess=False,
parent_context=None):
if root_pipeline_data is None:
root_pipeline_data = {}
if params is None:
params = {}
pipeline_data = deepcopy(
root_pipeline_data) if is_subprocess else root_pipeline_data
pipeline_inputs = self.pipeline_tree[PE.data][PE.inputs]
act_outputs = {}
scope_info = {}
process_params = {}
for key, info in pipeline_inputs.items():
if info.get(PE.source_act):
act_outputs.setdefault(info[PE.source_act],
{}).update({info[PE.source_key]: key})
continue
if info.get(PE.is_param, False):
info = params.get(key, info)
if is_subprocess:
process_params.update({key: info})
continue
scope_info.update({key: info})
output_keys = self.pipeline_tree[PE.data][PE.outputs].keys()
context = Context(act_outputs, output_keys)
for key, info in scope_info.items():
var = get_variable(key, info, context, pipeline_data)
context.set_global_var(key, var)
if is_subprocess:
if parent_context is None:
raise exceptions.DataTypeErrorException(
'parent context of subprocess cannot be none')
for key, info in process_params.items():
var = get_variable(key, info, parent_context, pipeline_data)
pipeline_data.update({key: var})
start = self.pipeline_tree[PE.start_event]
start_cls = getattr(event, start[PE.type])
start_event = start_cls(id=start[PE.id], name=start[PE.name])
end = self.pipeline_tree[PE.end_event]
end_cls = getattr(event, end[PE.type])
end_event = end_cls(id=end[PE.id], name=end[PE.name])
acts = self.pipeline_tree[PE.activities]
act_objs = []
for act in acts.values():
act_cls = getattr(activity, act[PE.type])
if act[PE.type] == PE.ServiceActivity:
component = ComponentLibrary.get_component(
act[PE.component][PE.code], act[PE.component][PE.inputs])
service = component.service()
data = component.data_for_execution(context, pipeline_data)
act_objs.append(
act_cls(id=act[PE.id],
service=service,
name=act[PE.name],
data=data,
error_ignorable=act.get(PE.error_ignorable, False),
skippable=act.get(PE.skippable, True),
can_retry=act.get(PE.can_retry, True),
timeout=act.get(PE.timeout)))
elif act[PE.type] == PE.SubProcess:
sub_tree = act[PE.pipeline]
params = act[PE.params]
sub_parser = PipelineParser(pipeline_tree=sub_tree)
act_objs.append(
act_cls(id=act[PE.id],
pipeline=sub_parser._parse(
root_pipeline_data=root_pipeline_data,
params=params,
is_subprocess=True,
parent_context=context),
name=act[PE.name]))
elif act[PE.type] == PE.LoopServiceActivity:
act_cls = getattr(activity, act[PE.type])
component = ComponentLibrary.get_component(
act[PE.component][PE.code], act[PE.component][PE.inputs])
service = component.service()
data = component.data_for_execution(context, pipeline_data)
act_objs.append(
act_cls(id=act[PE.id],
service=service,
name=act[PE.name],
data=data,
error_ignorable=act.get(PE.error_ignorable, False),
loop_times=act[PE.loop_times]))
else:
raise exceptions.FlowTypeError(u"Unknown Activity type: %s" %
act[PE.type])
gateways = self.pipeline_tree[PE.gateways]
flows = self.pipeline_tree[PE.flows]
gateway_objs = []
for gw in gateways.values():
gw_cls = getattr(gateway, gw[PE.type])
if gw[PE.type] in [PE.ParallelGateway]:
gateway_objs.append(
gw_cls(id=gw[PE.id],
converge_gateway_id=gw[PE.converge_gateway_id],
name=gw[PE.name]))
elif gw[PE.type] in [PE.ExclusiveGateway, PE.ConvergeGateway]:
gateway_objs.append(gw_cls(id=gw[PE.id], name=gw[PE.name]))
else:
raise exceptions.FlowTypeError(u"Unknown Gateway type: %s" %
gw[PE.type])
flow_objs_dict = {}
for fl in flows.values():
flow_nodes = act_objs + gateway_objs
if fl[PE.source] == start[PE.id]:
source = start_event
else:
source = filter(lambda x: x.id == fl[PE.source], flow_nodes)[0]
if fl[PE.target] == end[PE.id]:
target = end_event
else:
target = filter(lambda x: x.id == fl[PE.target], flow_nodes)[0]
flow_objs_dict[fl[PE.id]] = base.SequenceFlow(
fl[PE.id], source, target)
flow_objs = flow_objs_dict.values()
# add incoming and outgoing flow to acts
if not isinstance(start[PE.outgoing], list):
start[PE.outgoing] = [start[PE.outgoing]]
for outgoing_id in start[PE.outgoing]:
start_event.outgoing.add_flow(flow_objs_dict[outgoing_id])
if not isinstance(end[PE.incoming], list):
end[PE.incoming] = [end[PE.incoming]]
for incoming_id in end[PE.incoming]:
end_event.incoming.add_flow(flow_objs_dict[incoming_id])
for act in act_objs:
incoming = acts[act.id][PE.incoming]
if isinstance(incoming, list):
for s in incoming:
act.incoming.add_flow(flow_objs_dict[s])
else:
act.incoming.add_flow(flow_objs_dict[incoming])
act.outgoing.add_flow(flow_objs_dict[acts[act.id][PE.outgoing]])
for gw in gateway_objs:
if isinstance(gw, gateway.ExclusiveGateway):
for flow_id, con in gateways[gw.id][PE.conditions].items():
con_obj = gateway.Condition(
con[PE.evaluate],
flow_objs_dict[flow_id],
)
gw.add_condition(con_obj)
gw.incoming.add_flow(
flow_objs_dict[gateways[gw.id][PE.incoming]])
for outgoing_id in gateways[gw.id][PE.outgoing]:
gw.outgoing.add_flow(flow_objs_dict[outgoing_id])
elif isinstance(gw, gateway.ParallelGateway):
gw.incoming.add_flow(
flow_objs_dict[gateways[gw.id][PE.incoming]])
for outgoing_id in gateways[gw.id][PE.outgoing]:
gw.outgoing.add_flow(flow_objs_dict[outgoing_id])
elif isinstance(gw, gateway.ConvergeGateway):
for incoming_id in gateways[gw.id][PE.incoming]:
gw.incoming.add_flow(flow_objs_dict[incoming_id])
gw.outgoing.add_flow(
flow_objs_dict[gateways[gw.id][PE.outgoing]])
else:
raise exceptions.FlowTypeError(u"Unknown Gateway type: %s" %
type(gw))
pipeline_data = DataObject(pipeline_data)
pipeline_spec = PipelineSpec(start_event, end_event, flow_objs,
act_objs, gateway_objs, pipeline_data,
context)
return Pipeline(self.pipeline_tree[PE.id], pipeline_spec)
def parser(self, root_pipeline_data=None):
if root_pipeline_data is None:
root_pipeline_data = {}
pipeline_inputs = self.pipeline_tree['data']['inputs']
act_outputs = {}
scope_info = {}
for key, info in pipeline_inputs.iteritems():
if info.get('source_act'):
act_outputs.setdefault(info['source_act'],
{}).update({info['source_key']: key})
else:
scope_info.update({key: info})
output_keys = self.pipeline_tree['data']['outputs'].keys()
context = Context(act_outputs, output_keys)
for key, info in scope_info.iteritems():
value = get_variable(key, info, context, root_pipeline_data)
context.set_global_var(key, value)
start = self.pipeline_tree['start_event']
start_cls = getattr(event, start['type'])
start_event = start_cls(id=start['id'],
name=start['name'])
end = self.pipeline_tree['end_event']
end_cls = getattr(event, end['type'])
end_event = end_cls(id=end['id'],
name=end['name'])
acts = self.pipeline_tree['activities']
act_objs = []
for act in acts.values():
act_cls = getattr(activity, act['type'])
if act['type'] == 'ServiceActivity':
component = ComponentLibrary.get_component(
act['component']['code'], act['component']['inputs']
)
service = component.service()
data = component.data_for_execution(context, root_pipeline_data)
act_objs.append(act_cls(id=act['id'],
service=service,
name=act['name'],
data=data,
error_ignorable=act.get('error_ignorable', False)))
elif act['type'] == 'SubProcess':
pipeline_info = act['pipeline']
sub_parser = PipelineParser(pipeline_info)
act_objs.append(act_cls(id=act['id'],
pipeline=sub_parser.parser(root_pipeline_data),
name=act['name']))
else:
raise exceptions.FlowTypeError(u"Unknown Activity type: %s" %
act['type'])
gateways = self.pipeline_tree['gateways']
flows = self.pipeline_tree['flows']
gateway_objs = []
for gw in gateways.values():
gw_cls = getattr(gateway, gw['type'])
if gw['type'] in ['ParallelGateway']:
gateway_objs.append(
gw_cls(id=gw['id'],
converge_gateway_id=gw['converge_gateway_id'],
name=gw['name']))
elif gw['type'] in ['ExclusiveGateway', 'ConvergeGateway']:
gateway_objs.append(gw_cls(id=gw['id'],
name=gw['name']))
else:
raise exceptions.FlowTypeError(u"Unknown Gateway type: %s" %
gw['type'])
flow_objs_dict = {}
for fl in flows.values():
flow_nodes = act_objs + gateway_objs
if fl['source'] == start['id']:
source = start_event
else:
source = filter(lambda x: x.id == fl['source'], flow_nodes)[0]
if fl['target'] == end['id']:
target = end_event
else:
target = filter(lambda x: x.id == fl['target'], flow_nodes)[0]
flow_objs_dict[fl['id']] = base.SequenceFlow(fl['id'],
source,
target)
flow_objs = flow_objs_dict.values()
# add incoming and outgoing flow to acts
if not isinstance(start['outgoing'], list):
start['outgoing'] = [start['outgoing']]
for outgoing_id in start['outgoing']:
start_event.outgoing.add_flow(flow_objs_dict[outgoing_id])
if not isinstance(end['incoming'], list):
end['incoming'] = [end['incoming']]
for incoming_id in end['incoming']:
end_event.incoming.add_flow(flow_objs_dict[incoming_id])
for act in act_objs:
act.incoming.add_flow(flow_objs_dict[acts[act.id]['incoming']])
act.outgoing.add_flow(flow_objs_dict[acts[act.id]['outgoing']])
for gw in gateway_objs:
if isinstance(gw, gateway.ExclusiveGateway):
for flow_id, con in gateways[gw.id]['conditions'].iteritems():
con_obj = gateway.Condition(
con['evaluate'],
flow_objs_dict[flow_id],
)
gw.add_condition(con_obj)
gw.incoming.add_flow(
flow_objs_dict[gateways[gw.id]['incoming']]
)
for outgoing_id in gateways[gw.id]['outgoing']:
gw.outgoing.add_flow(flow_objs_dict[outgoing_id])
elif isinstance(gw, gateway.ParallelGateway):
gw.incoming.add_flow(
flow_objs_dict[gateways[gw.id]['incoming']]
)
for outgoing_id in gateways[gw.id]['outgoing']:
gw.outgoing.add_flow(flow_objs_dict[outgoing_id])
elif isinstance(gw, gateway.ConvergeGateway):
for incoming_id in gateways[gw.id]['incoming']:
gw.incoming.add_flow(flow_objs_dict[incoming_id])
gw.outgoing.add_flow(
flow_objs_dict[gateways[gw.id]['outgoing']]
)
else:
raise exceptions.FlowTypeError(u"Unknown Gateway type: %s" %
type(gw))
root_pipeline_data = DataObject(root_pipeline_data)
pipeline_spec = PipelineSpec(start_event, end_event, flow_objs,
act_objs, gateway_objs, root_pipeline_data,
context)
return Pipeline(self.pipeline_tree['id'], pipeline_spec)