Quelle diffoscope.py Sprache: Python

# 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/.
"""
This transform construct tasks to perform diffs between builds, as
defined in kind.yml
"""

from taskgraph.transforms.base import TransformSequence
from taskgraph.util.schema import Schema
from taskgraph.util.taskcluster import get_artifact_path
from voluptuous import Any, Optional, Required

from gecko_taskgraph.transforms.task import task_description_schema

index_or_string = Any(
    str,
    {Required("index-search"): str},
)

diff_description_schema = Schema(
    {
        # Name of the diff task.
        Required("name"): str,
        # Treeherder tier.
        Required("tier"): int,
        # Treeherder symbol.
        Required("symbol"): str,
        # relative path (from config.path) to the file the task was defined in.
        Optional("task-from"): str,
        # Original and new builds to compare.
        Required("original"): index_or_string,
        Required("new"): index_or_string,
        # Arguments to pass to diffoscope, used for task-defaults in
        # taskcluster/kinds/diffoscope/kind.yml
        Optional("args"): str,
        # Extra arguments to pass to diffoscope, that can be set per job.
        Optional("extra-args"): str,
        # Fail the task when differences are detected.
        Optional("fail-on-diff"): bool,
        # What artifact to check the differences of. Defaults to target.tar.xz
        # for Linux, target.dmg for Mac, target.zip for Windows, target.apk for
        # Android.
        Optional("artifact"): str,
        # Whether to unpack first. Diffoscope can normally work without unpacking,
        # but when one needs to --exclude some contents, that doesn't work out well
        # if said content is packed (e.g. in omni.ja).
        Optional("unpack"): bool,
        # Commands to run before performing the diff.
        Optional("pre-diff-commands"): [str],
        # Only run the task on a set of projects/branches.
        Optional("run-on-projects"): task_description_schema["run-on-projects"],
        Optional("optimization"): task_description_schema["optimization"],
    }
)

transforms = TransformSequence()
transforms.add_validate(diff_description_schema)

@transforms.add
def fill_template(config, tasks):
    dummy_tasks = {}

    for task in tasks:
        name = task["name"]

        deps = {}
        urls = {}
        previous_artifact = None
        artifact = task.get("artifact")
        for k in ("original", "new"):
            value = task[k]
            if isinstance(value, str):
                deps[k] = value
                dep_name = k
                os_hint = value
            else:
                index = value["index-search"]
                if index not in dummy_tasks:
                    dummy_tasks[index] = {
                        "label": "index-search-" + index,
                        "description": index,
                        "worker-type": "invalid/always-optimized",
                        "run": {
                            "using": "always-optimized",
                        },
                        "optimization": {
                            "index-search": [index],
                        },
                    }
                    yield dummy_tasks[index]
                deps[index] = "index-search-" + index
                dep_name = index
                os_hint = index.split(".")[-1]
            if artifact:
                pass
            elif "linux" in os_hint:
                artifact = "target.tar.xz"
            elif "macosx" in os_hint:
                artifact = "target.dmg"
            elif "android" in os_hint:
                artifact = "target.apk"
            elif "win" in os_hint:
                artifact = "target.zip"
            else:
                raise Exception(f"Cannot figure out the OS for {value!r}")
            if previous_artifact is not None and previous_artifact != artifact:
                raise Exception("Cannot compare builds from different OSes")
            urls[k] = {
                "artifact-reference": "<{}/{}>".format(
                    dep_name, get_artifact_path(task, artifact)
                ),
            }
            previous_artifact = artifact

        taskdesc = {
            "label": "diff-" + name,
            "description": name,
            "treeherder": {
                "symbol": task["symbol"],
                "platform": "diff/opt",
                "kind": "other",
                "tier": task["tier"],
            },
            "worker-type": "b-linux-gcp",
            "worker": {
                "docker-image": {"in-tree": "diffoscope"},
                "artifacts": [
                    {
                        "type": "file",
                        "path": f"/builds/worker/{f}",
                        "name": f"public/{f}",
                    }
                    for f in (
                        "diff.html",
                        "diff.txt",
                    )
                ],
                "env": {
                    "ORIG_URL": urls["original"],
                    "NEW_URL": urls["new"],
                    "DIFFOSCOPE_ARGS": " ".join(
                        task[k] for k in ("args", "extra-args") if k in task
                    ),
                    "PRE_DIFF": "; ".join(task.get("pre-diff-commands", [])),
                },
                "max-run-time": 1800,
            },
            "run": {
                "using": "run-task",
                "checkout": task.get("unpack", False),
                "command": "/builds/worker/bin/get_and_diffoscope{}{}".format(
                    " --unpack" if task.get("unpack") else "",
                    " --fail" if task.get("fail-on-diff") else "",
                ),
            },
            "dependencies": deps,
            "optimization": task.get("optimization"),
        }
        if "run-on-projects" in task:
            taskdesc["run-on-projects"] = task["run-on-projects"]

        if artifact.endswith(".dmg"):
            taskdesc.setdefault("fetches", {}).setdefault("toolchain", []).extend(
                [
                    "linux64-cctools-port",
                    "linux64-libdmg",
                ]
            )

        yield taskdesc

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