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38 lines
1.7 KiB
ReStructuredText
38 lines
1.7 KiB
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Task Graph
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==========
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+--------------------------------------------------------------------+
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| This page is an import from MDN and the contents might be outdated |
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+--------------------------------------------------------------------+
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After a change to the Gecko source code is pushed to version-control,
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jobs for that change appear
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on `Treeherder <https://treeherder.mozilla.org/>`__. How does this
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work?
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- A "decision task" is created to decide what to do with the push.
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- The decision task creates a lot of additional tasks. These tasks
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include build and test tasks, along with lots of other kinds of tasks
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to build docker images, build toolchains, perform analyses, check
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syntax, and so on.
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- These tasks are arranged in a "task graph", with some tasks (e.g.,
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tests) depending on others (builds). Once its prerequisite tasks
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complete, a dependent task begins.
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- The result of each task is sent to
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`TreeHerder <https://treeherder.mozilla.org>`__ where developers and
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sheriffs can track the status of the push.
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- The outputs from each task, log files, Firefox installers, and so on,
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appear attached to each task when it completes. These are viewable in
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the `Task
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Inspector <https://tools.taskcluster.net/task-inspector/>`__.
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All of this is controlled from within the Gecko source code, through a
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process called *task-graph generation*. This means it's easy to add a
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new job or tweak the parameters of a job in a :ref:`try
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push <Try Server>`, eventually landing
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that change on an integration branch.
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The details of task-graph generation are documented :ref:`in the source
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code itself <TaskCluster Task-Graph Generation>`,
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including a some :ref:`quick recipes for common changes <How Tos>`.
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