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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
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import json
import logging
import os
import re
import mozpack.path as mozpath
import taskgraph
from taskgraph.transforms.base import TransformSequence
from taskgraph.util.schema import Schema
from voluptuous import Optional, Required
from gecko_taskgraph.util.docker import (
create_context_tar,
generate_context_hash,
image_path,
)
from .. import GECKO
from .task import task_description_schema
logger = logging.getLogger(__name__)
CONTEXTS_DIR = "docker-contexts"
DIGEST_RE = re.compile("^[0-9a-f]{64}$")
IMAGE_BUILDER_IMAGE = (
"mozillareleases/image_builder:5.0.0"
"@sha256:"
"e510a9a9b80385f71c112d61b2f2053da625aff2b6d430411ac42e424c58953f"
)
transforms = TransformSequence()
docker_image_schema = Schema(
{
# Name of the docker image.
Required("name"): str,
# Name of the parent docker image.
Optional("parent"): str,
# Treeherder symbol.
Required("symbol"): str,
# relative path (from config.path) to the file the docker image was defined
# in.
Optional("job-from"): str,
# Arguments to use for the Dockerfile.
Optional("args"): {str: str},
# Name of the docker image definition under taskcluster/docker, when
# different from the docker image name.
Optional("definition"): str,
# List of package tasks this docker image depends on.
Optional("packages"): [str],
Optional(
"index",
description="information for indexing this build so its artifacts can be discovered",
): task_description_schema["index"],
Optional(
"cache",
description="Whether this image should be cached based on inputs.",
): bool,
}
)
transforms.add_validate(docker_image_schema)
@transforms.add
def fill_template(config, tasks):
if not taskgraph.fast and config.write_artifacts:
if not os.path.isdir(CONTEXTS_DIR):
os.makedirs(CONTEXTS_DIR)
for task in tasks:
image_name = task.pop("name")
job_symbol = task.pop("symbol")
args = task.pop("args", {})
packages = task.pop("packages", [])
parent = task.pop("parent", None)
for p in packages:
if f"packages-{p}" not in config.kind_dependencies_tasks:
raise Exception(
"Missing package job for {}-{}: {}".format(
config.kind, image_name, p
)
)
if not taskgraph.fast:
context_path = mozpath.relpath(image_path(image_name), GECKO)
if config.write_artifacts:
context_file = os.path.join(CONTEXTS_DIR, f"{image_name}.tar.gz")
logger.info(f"Writing {context_file} for docker image {image_name}")
context_hash = create_context_tar(
GECKO, context_path, context_file, image_name, args
)
else:
context_hash = generate_context_hash(
GECKO, context_path, image_name, args
)
else:
if config.write_artifacts:
raise Exception("Can't write artifacts if `taskgraph.fast` is set.")
context_hash = "0" * 40
digest_data = [context_hash]
digest_data += [json.dumps(args, sort_keys=True)]
description = "Build the docker image {} for use by dependent tasks".format(
image_name
)
args["DOCKER_IMAGE_PACKAGES"] = " ".join(f"<{p}>" for p in packages)
# Adjust the zstandard compression level based on the execution level.
# We use faster compression for level 1 because we care more about
# end-to-end times. We use slower/better compression for other levels
# because images are read more often and it is worth the trade-off to
# burn more CPU once to reduce image size.
zstd_level = "3" if int(config.params["level"]) == 1 else "10"
# include some information that is useful in reconstructing this task
# from JSON
taskdesc = {
"label": f"{config.kind}-{image_name}",
"description": description,
"attributes": {
"image_name": image_name,
"artifact_prefix": "public",
},
"always-target": True,
"expiration-policy": "long",
"scopes": [],
"treeherder": {
"symbol": job_symbol,
"platform": "taskcluster-images/opt",
"kind": "other",
"tier": 1,
},
"run-on-projects": [],
"worker-type": "images-gcp",
"worker": {
"implementation": "docker-worker",
"os": "linux",
"artifacts": [
{
"type": "file",
"path": "/workspace/image.tar.zst",
"name": "public/image.tar.zst",
}
],
"env": {
"CONTEXT_TASK_ID": {"task-reference": "<decision>"},
"CONTEXT_PATH": "public/docker-contexts/{}.tar.gz".format(
image_name
),
"HASH": context_hash,
"PROJECT": config.params["project"],
"IMAGE_NAME": image_name,
"DOCKER_IMAGE_ZSTD_LEVEL": zstd_level,
"DOCKER_BUILD_ARGS": {"task-reference": json.dumps(args)},
"GECKO_BASE_REPOSITORY": config.params["base_repository"],
"GECKO_HEAD_REPOSITORY": config.params["head_repository"],
"GECKO_HEAD_REV": config.params["head_rev"],
},
"chain-of-trust": True,
"max-run-time": 7200,
# FIXME: We aren't currently propagating the exit code
},
}
# Retry for 'funsize-update-generator' if exit status code is -1
if image_name in ["funsize-update-generator"]:
taskdesc["worker"]["retry-exit-status"] = [-1]
worker = taskdesc["worker"]
if image_name == "image_builder":
worker["docker-image"] = IMAGE_BUILDER_IMAGE
digest_data.append(f"image-builder-image:{IMAGE_BUILDER_IMAGE}")
else:
worker["docker-image"] = {"in-tree": "image_builder"}
deps = taskdesc.setdefault("dependencies", {})
deps["docker-image"] = f"{config.kind}-image_builder"
if packages:
deps = taskdesc.setdefault("dependencies", {})
for p in sorted(packages):
deps[p] = f"packages-{p}"
if parent:
deps = taskdesc.setdefault("dependencies", {})
deps["parent"] = f"{config.kind}-{parent}"
worker["env"]["PARENT_TASK_ID"] = {
"task-reference": "<parent>",
}
if "index" in task:
taskdesc["index"] = task["index"]
if task.get("cache", True) and not taskgraph.fast:
taskdesc["cache"] = {
"type": "docker-images.v2",
"name": image_name,
"digest-data": digest_data,
}
yield taskdesc
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