bug 1477021: create pipfile-update task for funsize-update-generator. r=sfraser

--HG--
extra : rebase_source : 8a7bc1b481b6d477dc6b1ea6a0bd392e73f16f74

taskcluster/ci/config.yml

@@ -70,6 +70,7 @@ treeherder:
         'langpack': 'Langpack sigatures and uploads'
         'TPS': 'Sync tests'
         'UV': 'Update verify'
+        'pipfu': 'pipfile update'
 
 index:
     products:

taskcluster/ci/pipfile-update/kind.yml

@@ -0,0 +1,44 @@
+# 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/.
+
+loader: taskgraph.loader.transform:loader
+
+transforms:
+   - taskgraph.transforms.pipfile_update:transforms
+   - taskgraph.transforms.task:transforms
+
+
+job-defaults:
+   name: pipfile_update
+   description: Update Pipfile.lock
+   run-on-projects: []
+   treeherder:
+      kind: build
+      platform: linux64/opt
+      tier: 1
+   worker-type: aws-provisioner-v1/gecko-{level}-b-linux
+   worker:
+      implementation: docker-worker
+      os: linux
+      docker-image: {in-tree: pipfile-updates}
+      max-run-time: 2400
+      command:
+         - /runme.sh
+      artifacts:
+         - name: 'public/build/Pipfile.lock.diff'
+           path: '/home/worker/artifacts/Pipfile.lock.diff'
+           type: file
+   scopes:
+      - secrets:get:project/releng/gecko/build/level-{level}/arc-phabricator-token
+
+
+jobs:
+   funsize-update-generator:
+      treeherder:
+         symbol: pipfu(fug)
+      worker:
+         env:
+            PIPFILE_DIRECTORY: "taskcluster/docker/funsize-update-generator"
+            PYTHON3: "1"
+            REVIEWERS: "sfraser, bhearsum"

taskcluster/docs/kinds.rst

@@ -448,6 +448,11 @@ repo-update
 Repo-Update tasks are tasks that perform some action on the project repo itself,
 in order to update its state in some way.
 
+pipfile-update
+--------------
+Pipfile-update tasks generate update Pipfile.lock for in-tree Pipfiles, and attach
+patches with the updates to Phabricator.
+
 partials
 --------
 Partials takes the complete.mar files produced in previous tasks and generates partial

taskcluster/taskgraph/target_tasks.py

@@ -572,6 +572,16 @@ def target_tasks_searchfox(full_task_graph, parameters, graph_config):
             'searchfox-macosx64-searchfox/debug']
 
 
+@_target_task('pipfile_update')
+def target_tasks_pipfile_update(full_task_graph, parameters, graph_config):
+    """Select the set of tasks required to perform nightly in-tree pipfile updates
+    """
+    def filter(task):
+        # For now any task in the repo-update kind is ok
+        return task.kind in ['pipfile-update']
+    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]
+
+
 @_target_task('file_update')
 def target_tasks_file_update(full_task_graph, parameters, graph_config):
     """Select the set of tasks required to perform nightly in-tree file updates

taskcluster/taskgraph/transforms/pipfile_update.py

@@ -0,0 +1,27 @@
+# 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/.
+"""
+Transform the repo-update task into an actual task description.
+"""
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+from taskgraph.transforms.base import TransformSequence
+from taskgraph.util.schema import resolve_keyed_by
+
+transforms = TransformSequence()
+
+
+@transforms.add
+def resolve_keys(config, tasks):
+    for task in tasks:
+        env = task['worker'].setdefault('env', {})
+        env['BRANCH'] = config.params['project']
+        for envvar in env:
+            resolve_keyed_by(env, envvar, envvar, **config.params)
+
+        for envvar in list(env.keys()):
+            if not env.get(envvar):
+                del env[envvar]
+        yield task