forked from mirrors/gecko-dev
58 lines
2.1 KiB
Python
58 lines
2.1 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import logging
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from taskgraph.util.templates import merge
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from taskgraph.util.yaml import load_yaml
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logger = logging.getLogger(__name__)
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def loader(kind, path, config, params, loaded_tasks):
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"""
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Get the input elements that will be transformed into tasks in a generic
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way. The elements themselves are free-form, and become the input to the
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first transform.
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By default, this reads tasks from the `tasks` key, or from yaml files
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named by `tasks-from`. The entities are read from mappings, and the
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keys to those mappings are added in the `name` key of each entity.
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If there is a `task-defaults` config, then every task is merged with it.
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This provides a simple way to set default values for all tasks of a kind.
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The `task-defaults` key can also be specified in a yaml file pointed to by
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`tasks-from`. In this case it will only apply to tasks defined in the same
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file.
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Other kind implementations can use a different loader function to
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produce inputs and hand them to `transform_inputs`.
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"""
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def generate_tasks():
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defaults = config.get("task-defaults")
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for name, task in config.get("tasks", {}).items():
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if defaults:
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task = merge(defaults, task)
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task["task-from"] = "kind.yml"
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yield name, task
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for filename in config.get("tasks-from", []):
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tasks = load_yaml(path, filename)
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file_defaults = tasks.pop("task-defaults", None)
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if defaults:
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file_defaults = merge(defaults, file_defaults or {})
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for name, task in tasks.items():
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if file_defaults:
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task = merge(file_defaults, task)
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task["task-from"] = filename
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yield name, task
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for name, task in generate_tasks():
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task["name"] = name
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logger.debug(f"Generating tasks for {kind} {name}")
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yield task
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