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# 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
"""
Graph morphs are modifications to task-graphs that take place *after* the
optimization phase.
These graph morphs are largely invisible to developers running `./mach`
locally, so they should be limited to changes that do not modify the meaning of
the graph.
"""
# Note that the translation of `{'task-reference': '..'}` and
# `artifact-reference` are handled in the optimization phase (since
# optimization involves dealing with taskIds directly). Similarly,
# `{'relative-datestamp': '..'}` is handled at the last possible moment during
# task creation.
import logging
import os
import re
from slugid import nice as slugid
from .graph import Graph
from .task import Task
from .taskgraph import TaskGraph
from .util.workertypes import get_worker_type
here = os.path.abspath(os.path.dirname(__file__))
logger = logging.getLogger(__name__)
MAX_ROUTES = 10
registered_morphs = []
def register_morph(func):
registered_morphs.append(func)
return func
def amend_taskgraph(taskgraph, label_to_taskid, to_add):
"""Add the given tasks to the taskgraph, returning a new taskgraph"""
new_tasks = taskgraph.tasks.copy()
new_edges = set(taskgraph.graph.edges)
for task in to_add:
new_tasks[task.task_id] = task
assert task.label not in label_to_taskid
label_to_taskid[task.label] = task.task_id
for depname, dep in task.dependencies.items():
new_edges.add((task.task_id, dep, depname))
taskgraph = TaskGraph(new_tasks, Graph(set(new_tasks), new_edges))
return taskgraph, label_to_taskid
def derive_index_task(task, taskgraph, label_to_taskid, parameters, graph_config):
"""Create the shell of a task that depends on `task` and on the given docker
image."""
purpose = "index-task"
label = f"{purpose}-{task.label}"
provisioner_id, worker_type = get_worker_type(
graph_config, "misc", parameters["level"]
)
task_def = {
"provisionerId": provisioner_id,
"workerType": worker_type,
"dependencies": [task.task_id],
"created": {"relative-datestamp": "0 seconds"},
"deadline": task.task["deadline"],
# no point existing past the parent task's deadline
"expires": task.task["deadline"],
"metadata": {
"name": label,
"description": "{} for {}".format(
purpose, task.task["metadata"]["description"]
),
"owner": task.task["metadata"]["owner"],
"source": task.task["metadata"]["source"],
},
"scopes": [],
"payload": {
"image": {
"path": "public/image.tar.zst",
"namespace": "taskgraph.cache.level-3.docker-images.v2.index-task.latest",
"type": "indexed-image",
},
"features": {
"taskclusterProxy": True,
},
"maxRunTime": 600,
},
}
# only include the docker-image dependency here if it is actually in the
# taskgraph (has not been optimized). It is included in
# task_def['dependencies'] unconditionally.
dependencies = {"parent": task.task_id}
task = Task(
kind="misc",
label=label,
attributes={},
task=task_def,
dependencies=dependencies,
)
task.task_id = slugid()
return task, taskgraph, label_to_taskid
def make_index_task(parent_task, taskgraph, label_to_taskid, parameters, graph_config):
index_paths = [
r.split(".", 1)[1] for r in parent_task.task["routes"] if r.startswith("index.")
]
parent_task.task["routes"] = [
r for r in parent_task.task["routes"] if not r.startswith("index.")
]
task, taskgraph, label_to_taskid = derive_index_task(
parent_task, taskgraph, label_to_taskid, parameters, graph_config
)
# we need to "summarize" the scopes, otherwise a particularly
# namespace-heavy index task might have more scopes than can fit in a
# temporary credential.
scopes = set()
domain_index_regex = re.compile(
r"({trust_domain}\.v2\.[^.]*\.).*".format(
trust_domain=re.escape(graph_config["trust-domain"])
)
)
index_path_res = [domain_index_regex]
for path in graph_config["taskgraph"].get("index-path-regexes", ()):
index_path_res.append(re.compile(path))
for path in index_paths:
for index_path_re in index_path_res:
match = index_path_re.match(path)
if match:
path = match.group(1) + "*"
break
scope = f"index:insert-task:{path}"
scopes.add(scope)
task.task["scopes"] = sorted(scopes)
task.task["payload"]["command"] = ["insert-indexes.js"] + index_paths
task.task["payload"]["env"] = {
"TARGET_TASKID": parent_task.task_id,
"INDEX_RANK": parent_task.task.get("extra", {}).get("index", {}).get("rank", 0),
}
return task, taskgraph, label_to_taskid
@register_morph
def add_index_tasks(taskgraph, label_to_taskid, parameters, graph_config):
"""
The TaskCluster queue only allows 10 routes on a task, but we have tasks
with many more routes, for purposes of indexing. This graph morph adds
"index tasks" that depend on such tasks and do the index insertions
directly, avoiding the limits on task.routes.
"""
logger.debug("Morphing: adding index tasks")
added = []
for label, task in taskgraph.tasks.items():
if len(task.task.get("routes", [])) <= MAX_ROUTES:
continue
task, taskgraph, label_to_taskid = make_index_task(
task, taskgraph, label_to_taskid, parameters, graph_config
)
added.append(task)
if added:
taskgraph, label_to_taskid = amend_taskgraph(taskgraph, label_to_taskid, added)
logger.info(f"Added {len(added)} index tasks")
return taskgraph, label_to_taskid
def _get_morph_url():
"""
Guess a URL for the current file, for source metadata for created tasks.
If we checked out the taskgraph code with run-task in the decision task,
we can use TASKGRAPH_* to find the right version, which covers the
existing use case.
"""
taskgraph_repo = os.environ.get(
)
taskgraph_rev = os.environ.get("TASKGRAPH_HEAD_REV", "default")
return f"{taskgraph_repo}/raw-file/{taskgraph_rev}/src/taskgraph/morph.py"
@register_morph
def add_code_review_task(taskgraph, label_to_taskid, parameters, graph_config):
logger.debug("Morphing: adding code review task")
review_config = parameters.get("code-review")
if not review_config:
return taskgraph, label_to_taskid
code_review_tasks = {}
for label, task in taskgraph.tasks.items():
if task.attributes.get("code-review"):
code_review_tasks[task.label] = task.task_id
if code_review_tasks:
code_review_task_def = {
"provisionerId": "built-in",
"workerType": "succeed",
"dependencies": sorted(code_review_tasks.values()),
# This option permits to run the task
# regardless of the dependencies tasks exit status
# as we are interested in the task failures
"requires": "all-resolved",
"created": {"relative-datestamp": "0 seconds"},
"deadline": {"relative-datestamp": "1 day"},
# no point existing past the parent task's deadline
"expires": {"relative-datestamp": "1 day"},
"metadata": {
"name": "code-review",
"description": "List all issues found in static analysis and linting tasks",
"owner": parameters["owner"],
"source": _get_morph_url(),
},
"scopes": [],
"payload": {},
"routes": ["project.relman.codereview.v1.try_ending"],
"extra": {
"code-review": {
"phabricator-build-target": review_config[
"phabricator-build-target"
],
"repository": parameters["head_repository"],
"revision": parameters["head_rev"],
}
},
}
task = Task(
kind="misc",
label="code-review",
attributes={},
task=code_review_task_def,
dependencies=code_review_tasks,
)
task.task_id = slugid()
taskgraph, label_to_taskid = amend_taskgraph(taskgraph, label_to_taskid, [task])
logger.info("Added code review task.")
return taskgraph, label_to_taskid
def morph(taskgraph, label_to_taskid, parameters, graph_config):
"""Apply all morphs"""
for m in registered_morphs:
taskgraph, label_to_taskid = m(
taskgraph, label_to_taskid, parameters, graph_config
)
return taskgraph, label_to_taskid