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path: root/opendc/models/room_state.py
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from opendc.models.model import Model
from opendc.util import database


class RoomState(Model):
    JSON_TO_PYTHON_DICT = {'RoomState': {'roomId': 'room_id', 'loadFraction': 'load_fraction', 'tick': 'tick'}}

    @classmethod
    def _from_database_row(cls, row):
        """Instantiate a RoomState from a database row."""

        return cls(room_id=row[0], load_fraction=row[1], tick=row[2])

    @classmethod
    def from_experiment_id(cls, experiment_id):
        """Query RoomStates by their Experiment id."""

        room_states = []

        statement = '''
            SELECT rooms.id, avg(machine_states.load_fraction), machine_states.tick
            FROM rooms
                JOIN tiles ON rooms.id = tiles.room_id
                JOIN objects ON tiles.object_id = objects.id
                JOIN racks ON objects.id = racks.id
                JOIN machines ON racks.id = machines.rack_id
                JOIN machine_states ON machines.id = machine_states.machine_id
            WHERE objects.type = "RACK"
                AND machine_states.experiment_id = %s
            GROUP BY machine_states.tick, rooms.id
        '''
        results = database.fetch_all(statement, (experiment_id, ))

        for row in results:
            room_states.append(cls._from_database_row(row))

        return room_states

    @classmethod
    def from_experiment_id_and_tick(cls, experiment_id, tick):
        """Query RoomStates by their Experiment id."""

        room_states = []

        statement = '''
            SELECT rooms.id, avg(machine_states.load_fraction), machine_states.tick
            FROM rooms
                JOIN tiles ON rooms.id = tiles.room_id
                JOIN objects ON tiles.object_id = objects.id
                JOIN racks ON objects.id = racks.id
                JOIN machines ON racks.id = machines.rack_id
                JOIN machine_states ON machines.id = machine_states.machine_id
            WHERE objects.type = "RACK"
                AND machine_states.experiment_id = %s
                AND machine_states.tick = %s
            GROUP BY rooms.id
        '''
        results = database.fetch_all(statement, (experiment_id, tick))

        for row in results:
            room_states.append(cls._from_database_row(row))

        return room_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