def exec_pipeline(self, pstr):
md = MDRepository()
p = yaml.safe_load(six.StringIO(pstr))
print("\n{}".format(yaml.dump(p)))
pl = Plumbing(p, pid="test")
res = pl.process(md, state={'batch': True, 'stats': {}})
return res, md
class PipelineCallback():
"""
A delayed pipeline callback used as a post for parse_metadata
"""
def __init__(self, entry_point, req, stats):
self.entry_point = entry_point
self.plumbing = Plumbing(req.plumbing.pipeline, "%s-via-%s" % (req.plumbing.id, entry_point))
self.req = req
self.stats = stats
def __call__(self, *args, **kwargs):
t = args[0]
if t is None:
raise ValueError("PipelineCallback must be called with a parse-tree argument")
try:
return self.plumbing.process(self.req.md, state={self.entry_point: True, 'stats': self.stats}, t=t)
except Exception, ex:
traceback.print_exc(ex)
raise ex