def test_graph_builds_dags_correctly(stub_graph_set):
shgraph = SnowShuGraph()
_, vals = stub_graph_set
full_catalog = [
vals.iso_relation, vals.view_relation, vals.downstream_relation,
vals.upstream_relation, vals.birelation_left, vals.birelation_right
]
graph = nx.Graph()
graph.add_nodes_from(full_catalog)
shgraph.graph = graph
for sub in shgraph.get_graphs():
assert isinstance(sub, nx.DiGraph)
def _execute(self,
barf: bool = False,
name: Optional[str] = None) -> Optional[str]:
graph = SnowShuGraph()
if name is not None:
self.config.name = name
graph.build_graph(self.config)
if self.incremental:
# TODO replica container should not be started for analyze commands
self.config.target_profile.adapter.initialize_replica(
self.config.source_profile.name, self.incremental)
incremental_target_catalog = self.config.target_profile.adapter.build_catalog(
patterns=SnowShuGraph.build_sum_patterns_from_configs(
self.config),
thread_workers=self.config.threads)
graph.graph = SnowShuGraph.catalog_difference(
graph.graph, incremental_target_catalog)
graphs = graph.get_connected_subgraphs()
if len(graphs) < 1:
args = (' new ', ' incremental ',
'; image up-to-date') if self.incremental else (' ', ' ',
'')
message = "No{}relations found per provided{}replica configuration{}, exiting.".format(
*args)
return message
if not self.config.target_profile.adapter.container:
# TODO replica container should not be started for analyze commands
self.config.target_profile.adapter.initialize_replica(
self.config.source_profile.name)
runner = GraphSetRunner()
runner.execute_graph_set(graphs,
self.config.source_profile.adapter,
self.config.target_profile.adapter,
threads=self.config.threads,
analyze=self.run_analyze,
barf=barf)
if not self.run_analyze:
relations = [
relation for graph in graphs for relation in graph.nodes
]
if self.config.source_profile.adapter.SUPPORTS_CROSS_DATABASE:
logger.info('Creating x-database links in target...')
self.config.target_profile.adapter.enable_cross_database()
logger.info('X-database enabled.')
self.config.target_profile.adapter.create_all_database_extensions()
logger.info('Applying %s emulation functions to target...',
self.config.source_profile.adapter.name)
for function in self.config.source_profile.adapter.SUPPORTED_FUNCTIONS:
self.config.target_profile.adapter.create_function_if_available(
function, relations)
logger.info('Emulation functions applied.')
self.config.target_profile.adapter.finalize_replica()
return printable_result(graph_to_result_list(graphs), self.run_analyze)