def test_orphans(config):
grapher = LookMlGrapher(config)
grapher.node_map['model_a'] = NodeType.MODEL
grapher.node_map['explore_a'] = NodeType.EXPLORE
grapher.node_map['view_a'] = NodeType.VIEW
grapher.node_map['orphan'] = NodeType.VIEW
grapher.models_to_explores.append(('model_a', 'explore_a'))
grapher.explores_to_views.append(('explore_a', 'view_a'))
grapher.tag_orphans()
orphans = grapher.orphans()
assert len(orphans) == 1
assert list(orphans)[0] == 'orphan'
def test_orphans(config):
grapher = LookMlGrapher(config)
grapher.node_map["model_a"] = NodeType.MODEL
grapher.node_map["explore_a"] = NodeType.EXPLORE
grapher.node_map["view_a"] = NodeType.VIEW
grapher.node_map["orphan"] = NodeType.VIEW
grapher.models_to_explores.append(("model_a", "explore_a"))
grapher.explores_to_views.append(("explore_a", "view_a"))
grapher.tag_orphans()
orphans = grapher.orphans()
assert len(orphans) == 1
assert list(orphans)[0] == "orphan"
class NoOrphansRule(Rule):
"""
Look for views unreferenced by any explores
"""
def __init__(self, config):
"""Initialize the rule
Args:
config (JSON): configuration
"""
self.config = config
self.grapher = LookMlGrapher(config)
self.view_dict = {}
def run(self, json_data):
"""run the rule
Args:
json_data (JSON): json_data of the lkml-parsed JSON dictionary for this file
Returns:
(tuple): tuple containing:
relevant (bool): is this rule relevant for this JSON chunk?
passed (bool): did the rule pass?
"""
pass # pragma: no cover
def process_lookml(self, lookml):
"""process the JSON_DATA of a file, delegating down to the grapher
also store metadata we'll need in a later stage
Args:
lookmlk (LookML): instance of LookML
Returns:
nothing. side effect is to store data in grapher and in this class
"""
self.grapher.process_lookml(lookml)
# we'll need the view_namme->filename mapping to output later
if lookml.has_views():
v = lookml.views()[0]
view_name = lookml.base_name
filepath = lookml.infilepath
self.view_dict[view_name] = filepath
def finish_up(self, file_out):
"""find the orphans, if any, and add results to file_out
Args:
file_out (list): list of results for files
Returns:
file_out (list)
"""
self.grapher.tag_orphans()
orphans = self.grapher.orphans()
for orphan in orphans:
simple_filepath = self.view_dict[orphan]
logging.info("Found orphan %s in %s", orphan, simple_filepath)
out = {"file": simple_filepath, "rule": self.name(), "passed": 0}
file_out.append(out)
return file_out
class NoOrphansRule(Rule):
'''
Look for views unreferenced by any explores
'''
def __init__(self, config):
'''Initialize the rule
Args:
config (JSON): configuration
'''
self.config = config
self.grapher = LookMlGrapher(config)
self.view_dict = {}
def run(self, json_data):
'''run the rule
Args:
json_data (JSON): json_data of the lookml-parser dictionary for this file
Returns:
(tuple): tuple containing:
relevant (bool): is this rule relevant for this JSON chunk?
passed (bool): did the rule pass?
'''
pass # pragma: no cover
def process_file(self, json_data):
'''process the JSON_DATA of a file, delegating down to the grapher
also store metadata we'll need in a later stage
Args:
json_data (JSON): json_data: parsed lkml file as JSON
Returns:
nothing. side effect is to store data in grapher and in this class
'''
self.grapher.process_file(filepath=None, json_data=json_data)
# we'll need the view_namme->filename mapping to output later
if 'views' in json_data['files'][0]:
view_name = json_data['files'][0]['views'][0]['_view']
filepath = json_data['files'][0]['_file_path']
self.view_dict[view_name] = filepath
def finish_up(self, file_out):
'''find the orphans, if any, and add results to file_out
Args:
file_out (list): list of results for files
Returns:
file_out (list)
'''
self.grapher.tag_orphans()
orphans = self.grapher.orphans()
for orphan in orphans:
simple_filepath = self.view_dict[orphan] #['files'][0]['_file_path']
logging.info("Found orphan %s in %s", orphan, simple_filepath)
out = {"file": simple_filepath, "rule": self.name(), "passed": 0}
file_out.append(out)
return (file_out)
