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from opendc.models.model import Model
from opendc.util import database
class RackState(Model):
JSON_TO_PYTHON_DICT = {'RackState': {'rackId': 'rack_id', 'loadFraction': 'load_fraction', 'tick': 'tick'}}
@classmethod
def _from_database_row(cls, row):
"""Instantiate a RackState from a database row."""
return cls(rack_id=row[0], load_fraction=row[1], tick=row[2])
@classmethod
def from_experiment_id(cls, experiment_id):
"""Query RackStates by their Experiment id."""
rack_states = []
statement = '''
SELECT racks.id, avg(machine_states.load_fraction), machine_states.tick
FROM racks
JOIN machines ON racks.id = machines.rack_id
JOIN machine_states ON machines.id = machine_states.machine_id
WHERE machine_states.experiment_id = %s
GROUP BY machine_states.tick, racks.id
'''
results = database.fetch_all(statement, (experiment_id, ))
for row in results:
rack_states.append(cls._from_database_row(row))
return rack_states
@classmethod
def from_experiment_id_and_tick(cls, experiment_id, tick):
"""Query RackStates by their Experiment id."""
rack_states = []
statement = '''
SELECT racks.id, avg(machine_states.load_fraction), machine_states.tick
FROM racks
JOIN machines ON racks.id = machines.rack_id
JOIN machine_states ON machines.id = machine_states.machine_id
WHERE machine_states.experiment_id = %s
AND machine_states.tick = %s
GROUP BY machine_states.tick, racks.id
'''
results = database.fetch_all(statement, (experiment_id, tick))
for row in results:
rack_states.append(cls._from_database_row(row))
return rack_states
def google_id_has_at_least(self, google_id, authorization_level):
"""Return True if the User has at least the given auth level over this RackState."""
if authorization_level in ['EDIT', 'OWN']:
return False
return True
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