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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 = ?
GROUP BY machine_states.tick, racks.id
'''
results = database.fetchall(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 = ?
AND machine_states.tick = ?
GROUP BY machine_states.tick, racks.id
'''
results = database.fetchall(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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