def link_graph(self, linker: Linker, manifest: Manifest):
for source in manifest.sources.values():
linker.add_node(source.unique_id)
for node in manifest.nodes.values():
self.link_node(linker, node, manifest)
cycle = linker.find_cycles()
if cycle:
raise RuntimeError("Found a cycle: {}".format(cycle))
def link_node(self, linker: Linker, node: NonSourceNode,
manifest: Manifest):
linker.add_node(node.unique_id)
for dependency in node.depends_on_nodes:
if dependency in manifest.nodes:
linker.dependency(node.unique_id,
(manifest.nodes[dependency].unique_id))
elif dependency in manifest.sources:
linker.dependency(node.unique_id,
(manifest.sources[dependency].unique_id))
else:
dbt.exceptions.dependency_not_found(node, dependency)