def run(self):
Task.run(self)
if self.valid:
# prepare a task product
self.product = []
# if the action preset is not None or empty initialize the transform
if self.preset['action'][self.ontology['action']]:
# ensure all resources are loaded in the asset
self.resource.asset.touch()
# initialize a transform
self.transform = ResourceTransform(self.resource)
self.transform.transform(self.preset, self.ontology['action'])
self.node['transform'] = self.transform.node
# if the transform yields not viable input there really is nothing much to do...
if not any((any(pivot.stream) for pivot in self.transform.pivot.values())):
self.invalidate(u'Task did not yield any viable input')
# if we are still go, invoke the action
if self.valid: self.action()
class ResourceTask(Task):
def __init__(self, job, ontology, path):
Task.__init__(self, job, ontology)
self.location = self.env.repository[self.env.host].decode_resource_path(path)
self.resource = None
self.transform = None
self.product = None
self.action = None
self._preset = None
if self.location is None:
self.invalidate(u'Invalid resource path provided {}'.format(path))
@property
def preset(self):
if self._preset is None:
if self.ontology['preset'] in self.env.preset:
self._preset = self.env.preset[self.ontology['preset']]
return self._preset
def load(self):
Task.load(self)
if self.valid:
if self.preset is None:
self.invalidate(u'Could not determine preset')
else:
# Add the resource location and transform to the node
self.node['origin'] = self.location.node
self.resource = self.cache.find(self.location)
if self.resource:
# if the action is defined in the preset, the preset supports the action
if self.ontology['action'] in self.preset['action']:
# locate a method that implements the action
self.action = getattr(self, self.ontology['action'], None)
if self.action is None:
self.invalidate(u'Unknown action {}'.format(self.ontology['action']))
else:
self.invalidate(u'Action {} is not defined in preset {}'.format(self.ontology['action'], self.ontology['preset']))
else:
self.invalidate(u'Invalid resource location')
def unload(self):
if self.valid:
# Mark products as volatile to make sure they are indexed
# and add their location to the task node
if self.product:
self.node['product'] = []
for p in self.product:
p.volatile = True
self.node['product'].append(p.location.node)
# Commit the asset
self.resource.asset.commit()
Task.unload(self)
def run(self):
Task.run(self)
if self.valid:
# prepare a task product
self.product = []
# if the action preset is not None or empty initialize the transform
if self.preset['action'][self.ontology['action']]:
# ensure all resources are loaded in the asset
self.resource.asset.touch()
# initialize a transform
self.transform = ResourceTransform(self.resource)
self.transform.transform(self.preset, self.ontology['action'])
self.node['transform'] = self.transform.node
# if the transform yields not viable input there really is nothing much to do...
if not any((any(pivot.stream) for pivot in self.transform.pivot.values())):
self.invalidate(u'Task did not yield any viable input')
# if we are still go, invoke the action
if self.valid: self.action()
def produce(self, override=None):
# copy the location ontology
p = Ontology.clone(self.location)
# allow the location to recalculate those concepts
del p['volume path']
del p['file name']
del p['directory']
# explicitly set the volume and host from the task
p['host'] = self.env.host
p['volume'] = self.ontology['volume']
# for copy and move we try to set a profile from the source
if self.ontology['action'] in set(('copy', 'move', 'pack')):
if self.resource.meta['profile']:
p['profile'] = self.resource.meta['profile']
# for transcode we try to set the profile from the transform
elif self.ontology['action'] == 'transcode':
for pivot in self.transform.pivot.values():
if 'profile' in pivot.location:
p['profile'] = pivot.location['profile']
# whatever happened, if a profile has been explicitly provided by the task
# it will override anything we set implicitly
if self.ontology['profile']:
p['profile'] = self.ontology['profile']
# if an override was given set some concepts from it
if override:
for i in set((
'kind',
'language',
'stream order',
'resource path digest',
'routing type'
)):
if i in override: p[i] = override[i]
# try to produce a product
product = self.resource.asset.locate_resource(p)
if product:
self.product.append(product)
else:
self.log.error(u'Could not determine destination path from:\n%s', self.env.encode_json(p))
return product
def info(self):
self.resource.info(self)
def copy(self):
self.resource.copy(self)
def move(self):
self.resource.move(self)
def delete(self):
self.resource.delete(self)
def explode(self):
self.resource.explode(self)
def pack(self):
self.resource.pack(self)
def tag(self):
self.resource.tag(self)
def optimize(self):
self.resource.optimize(self)
def transcode(self):
self.resource.transcode(self)
def update(self):
self.resource.update(self)
def prepare(self):
# push a task to explode the resource
o = self.job.ontology.project('ns.system.task')
o['action'] = 'explode'
explode = ResourceTask(self.job, o, self.location['path'])
explode.constrain({'scope':'task', 'reference':self.key, 'status':'completed'})
self.job.push(explode)
# push a task to repack the resource fragments
o = self.job.ontology.project('ns.system.task')
o['action'] = 'pack'
o['preset'] = 'fragment'
pack = ResourceTask(self.job, o, self.location['path'])
pack.constrain({'scope':'task', 'reference':self.key, 'status':'completed'})
pack.constrain({'scope':'group', 'reference':explode.key, 'status':'completed'})
self.job.push(pack)
