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75 строки
2.9 KiB
ReStructuredText
75 строки
2.9 KiB
ReStructuredText
=====================
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Version Control in CI
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=====================
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Upgrading Mercurial
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===================
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Upgrading Mercurial in CI requires touching a handful of different
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components.
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Vendored robustcheckout
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-----------------------
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The ``robustcheckout`` Mercurial extension is used throughout CI to
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perform clones and working directory updates. The canonical home of
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the extension is in the
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https://hg.mozilla.org/hgcustom/version-control-tools repository
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at the path ``hgext/robustcheckout/__init__.py``.
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When upgrading Mercurial, the ``robustcheckout`` extension should also
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be updated to ensure it is compatible with the version of Mercurial
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being upgraded to. Typically, one simply copies the latest version
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from ``version-control-tools`` into the vendored locations.
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The locations are as follows:
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- In-tree: ``testing/mozharness/external_tools/robustcheckout.py``
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- Treescript: ``https://github.com/mozilla-releng/scriptworker-scripts/blob/master/treescript/treescript/py2/robustcheckout.py``
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- build-puppet: ``https://github.com/mozilla-releng/build-puppet/blob/master/modules/mercurial/files/robustcheckout.py``
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- ronin_puppet: ``https://github.com/mozilla-platform-ops/ronin_puppet/blob/master/modules/mercurial/files/robustcheckout.py``
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- OpenCloudConfig: ``https://github.com/mozilla-releng/OpenCloudConfig/blob/master/userdata/Configuration/FirefoxBuildResources/robustcheckout.py``
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Debian Packages for Debian and Ubuntu Based Docker Images
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---------------------------------------------------------
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``taskcluster/ci/packages/debian.yml`` and ``taskcluster/ci/packages/ubuntu.yml``
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define custom Debian packages for Mercurial. These are installed in various
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Docker images.
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To upgrade Mercurial, typically you just need to update the source URL
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and its hash in this file.
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Windows AMIs
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------------
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https://github.com/mozilla-releng/OpenCloudConfig defines the Windows
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environment for various Windows AMIs used by Taskcluster. Several of
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the files reference a ``mercurial-x.y.z-*.msi`` installer. These references
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will need to be updated to the Mercurial version being upgraded to.
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The ``robustcheckout`` extension is also vendored into this repository
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at ``userdata/Configuration/FirefoxBuildResources/robustcheckout.py``. It
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should also be updated if needed.
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Puppet Maintained Hosts
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-----------------------
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Some hosts (namely macOS machines) are managed by Puppet and Puppet is used
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to install Mercurial.
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Puppet code lives in the https://github.com/mozilla-releng/build-puppet repository.
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Relevant files are in ``modules/mercurial/``,
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``modules/packages/manifests/mozilla/mozilla-python27-mercurial-debian/``,
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and ``modules/packages/manifests/mozilla/py27_mercurial*``. A copy of
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``robustcheckout`` is also vendored at
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``modules/mercurial/files/robustcheckout.py``.
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.. note::
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The steps to upgrade Mercurial in Puppet aren't currently captured here.
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Someone should capture those...
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