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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 logging
import os
import sys
import attr
from voluptuous import All, Any, Extra, Length, Optional, Required
from .util import path
from .util.python_path import find_object
from .util.schema import Schema, optionally_keyed_by, validate_schema
from .util.yaml import load_yaml
logger = logging.getLogger(__name__)
graph_config_schema = Schema(
{
# The trust-domain for this graph.
# (See https://firefox-source-docs.mozilla.org/taskcluster/taskcluster/taskgraph.html#taskgraph-trust-domain) # noqa
Required("trust-domain"): str,
Required("task-priority"): optionally_keyed_by(
"project",
Any(
"highest",
"very-high",
"high",
"medium",
"low",
"very-low",
"lowest",
),
),
Required("workers"): {
Required("aliases"): {
str: {
Required("provisioner"): optionally_keyed_by("level", str),
Required("implementation"): str,
Required("os"): str,
Required("worker-type"): optionally_keyed_by("level", str),
}
},
},
Required("taskgraph"): {
Optional(
"register",
description="Python function to call to register extensions.",
): str,
Optional("decision-parameters"): str,
Optional(
"cached-task-prefix",
description="The taskcluster index prefix to use for caching tasks. "
"Defaults to `trust-domain`.",
): str,
Required("repositories"): All(
{
str: {
Required("name"): str,
Optional("project-regex"): str,
Optional("ssh-secret-name"): str,
# FIXME
Extra: str,
}
},
Length(min=1),
),
},
Extra: object,
}
)
"""Schema for GraphConfig"""
@attr.s(frozen=True, cmp=False)
class GraphConfig:
_config = attr.ib()
root_dir = attr.ib()
_PATH_MODIFIED = False
def __getitem__(self, name):
return self._config[name]
def __contains__(self, name):
return name in self._config
def register(self):
"""
Add the project's taskgraph directory to the python path, and register
any extensions present.
"""
modify_path = os.path.dirname(self.root_dir)
if GraphConfig._PATH_MODIFIED:
if GraphConfig._PATH_MODIFIED == modify_path:
# Already modified path with the same root_dir.
# We currently need to do this to enable actions to call
# taskgraph_decision, e.g. relpro.
return
raise Exception("Can't register multiple directories on python path.")
GraphConfig._PATH_MODIFIED = modify_path
sys.path.insert(0, modify_path)
register_path = self["taskgraph"].get("register")
if register_path:
find_object(register_path)(self)
@property
def vcs_root(self):
if path.split(self.root_dir)[-2:] != ["taskcluster", "ci"]:
raise Exception(
"Not guessing path to vcs root. "
"Graph config in non-standard location."
)
return os.path.dirname(os.path.dirname(self.root_dir))
@property
def taskcluster_yml(self):
return os.path.join(self.vcs_root, ".taskcluster.yml")
def validate_graph_config(config):
validate_schema(graph_config_schema, config, "Invalid graph configuration:")
def load_graph_config(root_dir):
config_yml = os.path.join(root_dir, "config.yml")
if not os.path.exists(config_yml):
raise Exception(f"Couldn't find taskgraph configuration: {config_yml}")
logger.debug(f"loading config from `{config_yml}`")
config = load_yaml(config_yml)
validate_graph_config(config)
return GraphConfig(config=config, root_dir=root_dir)
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