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create_interactive.py
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create_interactive.py
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# -*- coding: utf-8 -*-
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import absolute_import, print_function, unicode_literals
import logging
import re
import taskcluster_urls
from .util import (
create_tasks,
fetch_graph_and_labels
)
from taskgraph.util.taskcluster import (
send_email,
get_root_url,
)
from .registry import register_callback_action
from taskgraph.util import taskcluster
logger = logging.getLogger(__name__)
EMAIL_SUBJECT = 'Your Interactive Task for {label}'
EMAIL_CONTENT = '''\
As you requested, Firefox CI has created an interactive task to run {label}
on revision {revision} in {repo}. Click the button below to connect to the
task. You may need to wait for it to begin running.
'''
###
# Security Concerns
#
# An "interactive task" is, quite literally, shell access to a worker. That
# is limited by being in a Docker container, but we assume that Docker has
# bugs so we do not want to rely on container isolation exclusively.
#
# Interactive tasks should never be allowed on hosts that build binaries
# leading to a release -- level 3 builders.
#
# Users must not be allowed to create interactive tasks for tasks above
# their own level.
#
# Interactive tasks must not have any routes that might make them appear
# in the index to be used by other production tasks.
#
# Interactive tasks should not be able to write to any docker-worker caches.
SCOPE_WHITELIST = [
# this is not actually secret, and just about everything needs it
re.compile(r'^secrets:get:project/taskcluster/gecko/hgfingerprint$'),
# public downloads are OK
re.compile(r'^docker-worker:relengapi-proxy:tooltool.download.public$'),
# level-appropriate secrets are generally necessary to run a task; these
# also are "not that secret" - most of them are built into the resulting
# binary and could be extracted by someone with `strings`.
re.compile(r'^secrets:get:project/releng/gecko/build/level-[0-9]/\*'),
# ptracing is generally useful for interactive tasks, too!
re.compile(r'^docker-worker:feature:allowPtrace$'),
# docker-worker capabilities include loopback devices
re.compile(r'^docker-worker:capability:device:.*$'),
]
def context(params):
# available for any docker-worker tasks at levels 1, 2; and for
# test tasks on level 3 (level-3 builders are firewalled off)
if int(params['level']) < 3:
return [{'worker-implementation': 'docker-worker'}]
else:
return [{'worker-implementation': 'docker-worker', 'kind': 'test'}]
@register_callback_action(
title='Create Interactive Task',
name='create-interactive',
symbol='create-inter',
generic=True,
description=(
'Create a a copy of the task that you can interact with'
),
order=50,
context=context,
schema={
'type': 'object',
'properties': {
'notify': {
'type': 'string',
'format': 'email',
'title': 'Who to notify of the pending interactive task',
'description': (
'Enter your email here to get an email containing a link '
'to interact with the task'
),
# include a default for ease of users' editing
'default': 'noreply@noreply.mozilla.org',
},
},
'additionalProperties': False,
},
)
def create_interactive_action(parameters, graph_config, input, task_group_id, task_id):
# fetch the original task definition from the taskgraph, to avoid
# creating interactive copies of unexpected tasks. Note that this only applies
# to docker-worker tasks, so we can assume the docker-worker payload format.
decision_task_id, full_task_graph, label_to_taskid = fetch_graph_and_labels(
parameters, graph_config)
task = taskcluster.get_task_definition(task_id)
label = task['metadata']['name']
def edit(task):
if task.label != label:
return task
task_def = task.task
# drop task routes (don't index this!)
task_def['routes'] = []
# only try this once
task_def['retries'] = 0
# short expirations, at least 3 hour maxRunTime
task_def['deadline'] = {'relative-datestamp': '12 hours'}
task_def['created'] = {'relative-datestamp': '0 hours'}
task_def['expires'] = {'relative-datestamp': '1 day'}
# filter scopes with the SCOPE_WHITELIST
task.task['scopes'] = [s for s in task.task.get('scopes', [])
if any(p.match(s) for p in SCOPE_WHITELIST)]
payload = task_def['payload']
# make sure the task runs for long enough..
payload['maxRunTime'] = max(3600 * 3, payload.get('maxRunTime', 0))
# no caches or artifacts
payload['cache'] = {}
payload['artifacts'] = {}
# enable interactive mode
payload.setdefault('features', {})['interactive'] = True
payload.setdefault('env', {})['TASKCLUSTER_INTERACTIVE'] = 'true'
return task
# Create the task and any of its dependencies. This uses a new taskGroupId to avoid
# polluting the existing taskGroup with interactive tasks.
label_to_taskid = create_tasks(graph_config, [label], full_task_graph, label_to_taskid,
parameters, modifier=edit)
taskId = label_to_taskid[label]
logger.info('Created interactive task {}; sending notification'.format(taskId))
if input and 'notify' in input:
email = input['notify']
# no point sending to a noreply address!
if email == 'noreply@noreply.mozilla.org':
return
info = {
'url': taskcluster_urls.ui(get_root_url(False), 'tasks/{}/connect'.format(taskId)),
'label': label,
'revision': parameters['head_rev'],
'repo': parameters['head_repository'],
}
send_email(
email,
subject=EMAIL_SUBJECT.format(**info),
content=EMAIL_CONTENT.format(**info),
link={
'text': 'Connect',
'href': info['url'],
},
use_proxy=True)