def resolve_and_build(self):
""" resolves the dependencies of this build target and builds it """
pdebug("resolving and building task '%s'" % self.name,
groups=["build_task"])
indent_text(indent="++2")
toret = self.build(**self.resolve_dependencies())
indent_text(indent="--2")
return toret
def register_dependency(self, data_src, data_sink):
""" registers a dependency of data_src -> data_sink
by placing appropriate entries in provides_for and depends_on
"""
pdebug("registering dependency %s -> %s" % (data_src, data_sink))
if (data_src not in self._gettask(data_sink).depends_on):
self._gettask(data_sink).depends_on.append(data_src)
if (data_sink not in self._gettask(data_src).provides_for):
self._gettask(data_src).provides_for.append(data_sink)
def update_task(self, taskname, ignore_dependents=[]):
pout("updating task %s" % taskname)
last_value = self._gettask(taskname).value
self.build_task(taskname)
if last_value != self._gettask(taskname).value:
dependent_order = self.resolve_dependency_graph(taskname)
for index, dependent in enumerate(dependent_order):
if (dependent not in ignore_dependents and
self.tasks[dependent].last_build_time > 0):
self.update_task(
dependent,
ignore_dependents=dependent_order[index:])
else:
pdebug("no change in %s" % taskname)
