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# Copyright (c) 2021 AtLarge Research
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from flask import request
from flask_restful import Resource
from marshmallow import fields, Schema, validate
from werkzeug.exceptions import BadRequest, Conflict
from opendc.exts import requires_auth
from opendc.models.scenario import Scenario
def convert_to_job(scenario):
"""Convert a scenario to a job.
"""
return JobSchema().dump({
'_id': scenario['_id'],
'scenarioId': scenario['_id'],
'state': scenario['simulation']['state'],
'heartbeat': scenario['simulation'].get('heartbeat', None),
'results': scenario.get('results', {})
})
class JobSchema(Schema):
"""
Schema representing a simulation job.
"""
_id = fields.String(dump_only=True)
scenarioId = fields.String(dump_only=True)
state = fields.String(required=True,
validate=validate.OneOf(["QUEUED", "CLAIMED", "RUNNING", "FINISHED", "FAILED"]))
heartbeat = fields.DateTime()
results = fields.Dict()
class JobList(Resource):
"""
Resource representing the list of available jobs.
"""
method_decorators = [requires_auth]
def get(self):
"""Get all available jobs."""
jobs = Scenario.get_jobs()
data = list(map(convert_to_job, jobs.obj))
return {'data': data}
class Job(Resource):
"""
Resource representing a single job.
"""
method_decorators = [requires_auth]
def get(self, job_id):
"""Get the details of a single job."""
job = Scenario.from_id(job_id)
job.check_exists()
data = convert_to_job(job.obj)
return {'data': data}
def post(self, job_id):
"""Update the details of a single job."""
action = JobSchema(only=('state', 'results')).load(request.json)
job = Scenario.from_id(job_id)
job.check_exists()
old_state = job.obj['simulation']['state']
new_state = action['state']
if old_state == new_state:
data = job.update_state(new_state)
elif (old_state, new_state) == ('QUEUED', 'CLAIMED'):
data = job.update_state('CLAIMED')
elif (old_state, new_state) == ('CLAIMED', 'RUNNING'):
data = job.update_state('RUNNING')
elif (old_state, new_state) == ('RUNNING', 'FINISHED'):
data = job.update_state('FINISHED', results=action.get('results', None))
elif old_state in ('CLAIMED', 'RUNNING') and new_state == 'FAILED':
data = job.update_state('FAILED')
else:
raise BadRequest('Invalid state transition')
if not data:
raise Conflict('State conflict')
return {'data': convert_to_job(data)}
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