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# Copyright (C) 2017-2019 Lars Wirzenius
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import json
import time
import ick2
class WorkAPI(ick2.APIbase):
def __init__(self, state):
super().__init__(state)
self._trans = ick2.TransactionalState(state)
def get_routes(self, path): # pragma: no cover
return [
{
'method': 'GET',
'path': '{}'.format(path),
'callback': self.GET(self.get_work),
},
{
'method': 'POST',
'path': path,
'callback': self.POST(self.update_work),
},
]
def get_work(self, token=None, **kwargs):
worker_id = self._get_client_id(**kwargs)
ick2.log.log(
'trace', msg_text='Worker wants work', worker_id=worker_id)
with self._trans.modify(token, 'workers', worker_id) as worker:
doing = worker.get('doing')
if doing:
ick2.log.log(
'trace', msg_text='Worker already got work', doing=doing)
return doing
build_id = self._pick_build(token, worker_id)
if build_id is None:
ick2.log.log('trace', msg_text='No suitable build for worker')
return {}
with self._trans.modify(token, 'builds', build_id) as build:
with self._trans.modify(token, 'log', build_id) as log:
ick2.log.log(
'trace', msg_text='Picked build for worker',
build_id=build_id, build=build.as_dict())
build_obj = ick2.Build(build)
sm = ick2.BuildStateMachine(build_obj)
if sm.get_state() == ick2.BUILD_TRIGGERED:
sm.handle_event(ick2.BuildStartsEvent())
self._append_text_to_build_log(
log,
'Build starts at {}\n'.format(
time.strftime('%Y-%m-%d %H:%M:%S')))
resp = sm.handle_event(ick2.NeedWorkEvent())
if resp is None: # pragma: no cover
ick2.log.log(
'trace', msg_text='Did not find work in build')
self._append_text_to_build_log(
log, 'Did not find work to do in build\n')
return {}
action_id, action = resp
build['worker'] = worker_id
doing = {
'build_id': build_id,
'build_number': build['build_number'],
'worker': worker_id,
'project': build['project'],
'parameters': build['parameters'],
'action_id': action_id,
'step': action,
'log': build['log'],
}
worker.from_dict({
'worker': worker_id,
'doing': doing,
})
self._append_text_to_build_log(
log,
'Action starts at {}:\n{}\n'.format(
time.strftime('%Y-%m-%d %H:%M:%S'),
json.dumps(doing, indent=4)))
ick2.log.log(
'trace', msg_text='Returning work for worker',
doing=worker['doing'])
return worker['doing']
def _get_client_id(self, **kwargs):
claims = kwargs.get('claims', {})
client_id = claims.get('aud')
if client_id is None: # pragma: no cover
raise ick2.ClientIdMissing()
return client_id
def _pick_build(self, token, worker):
def on_worker(build):
return build.get('worker') == worker
def status(build):
return build.get('status')
def is_building(build):
building_states = (ick2.BUILD_BUILDING, ick2.BUILD_NOTIFYING)
return status(build) in building_states
def is_triggered(build):
return status(build) == ick2.BUILD_TRIGGERED
builds = self._trans.get_resources(token, 'builds')
return (self._find_build(builds, on_worker, is_building) or
self._find_build(builds, is_triggered))
def _find_build(self, builds, *preds):
for build in builds:
if all(pred(build) for pred in preds):
return build['build_id']
return None
def update_work(self, update, token=None, **kwargs):
try:
worker_id = update['worker']
build_id = update['build_id']
project_name = update['project']
exit_code = update.get('exit_code')
except KeyError as e: # pragma: no cover
raise ick2.BadUpdate(str(e))
with self._trans.modify(token, 'workers', worker_id) as worker:
with self._trans.modify(token, 'builds', build_id) as build:
with self._trans.modify(token, 'log', build_id) as log:
doing = worker.get('doing', {})
self._check_work_update(doing, update)
self._append_to_build_log(log, update)
action_id = doing['action_id']
build_obj = ick2.Build(build)
sm = ick2.BuildStateMachine(build_obj)
event = ick2.create_build_event(update)
sm.handle_event(event)
action_ended = exit_code is not None
if action_ended:
self._append_text_to_build_log(
log,
'Action ends at {}, exit code {}\n'.format(
time.strftime('%Y-%m-%d %H:%M:%S'),
update['exit_code']))
if build_obj.is_finished(): # pragma: no cover
self._append_text_to_build_log(
log,
'Build ends at {}, exit code {}\n'.format(
time.strftime('%Y-%m-%d %H:%M:%S'),
build['exit_code']))
if action_ended or build_obj.is_finished():
worker.from_dict({
'worker': worker_id,
'doing': {},
})
def _check_work_update(self, doing, update): # pragma: no cover
must_match = ['worker', 'project', 'build_id', 'action_id']
for name in must_match:
if name not in update:
raise ick2.BadUpdate('{} not specified'.format(name))
if doing.get(name) is not None and doing.get(name) != update[name]:
raise ick2.BadUpdate(
'{} differs from current work: {} vs {}'.format(
name, doing.get(name), update[name]))
def _append_to_build_log(self, log, update):
ick2.log.log('trace', msg_text='appending to build log', update=update)
for stream in ['stdout', 'stderr']:
text = update.get(stream, '')
self._append_text_to_build_log(log, text)
def _append_text_to_build_log(self, log, text):
log['log'] = log.get('log', '') + (text or '')
def create(self, body, **kwargs): # pragma: no cover
pass
def update(self, body, name, **kwargs): # pragma: no cover
pass
def list(self, **kwargs): # pragma: no cover
pass
def show(self, name, **kwargs): # pragma: no cover
pass
def delete(self, name, **kwargs): # pragma: no cover
pass
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