c7c4ec19a3
We try to expose metadata to users about what dib included in the image and source-repositories was not doing that, so this fixes it. It also permits easy introspection from other elements (such as an upcoming PyPI cache layer). Change-Id: I1e48e65f69ebe1f4556cc3bf35ccf195e99bcc76
45 lines
2.0 KiB
Markdown
45 lines
2.0 KiB
Markdown
With this element other elements can register source code repositories by
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placing their details in the file source-repository-\*. An example
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of an element "custom-element" that wants to retrieve the ironic source
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from git and pbr from a tarball would be
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*File : elements/custom-element/source-repository-ironic*
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#<name> <type> <destination> <location> [<ref>]
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# <ref> defaults to master if not specified
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ironic git /usr/local/ironic git://github.com/openstack/ironic.git
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*File : elements/custom-element/source-repository-pbr*
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pbr tar /usr/local/pbr http://tarballs.openstack.org/pbr/pbr-master.tar.gz
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diskimage-builder will then retrieve the sources specified and place them
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at the directory \<destination\>
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A number of environment variables can be set by the process calling
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diskimage-builder which can change the details registered by the element, these are
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DIB_REPOTYPE_<name> : change the registered type
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DIB_REPOLOCATION_<name> : change the registered location
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DIB_REPOREF_<name> : change the registered reference
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for example if you would like diskimage-builder to get ironic from a local
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mirror you could set DIB_REPOLOCATION_ironic=git://localgitserver/ironic.git
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Alternatively if you would like to use the keystone element and build an image with
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keystone from a stable branch then you would set DIB_REPOREF_keystone=stable/grizzly
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Git sources will be cloned to \<destination\>
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Tarballs will be extracted to \<destination\>. Tarballs should contain a
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single topleval directory, regardless of the name of this top level directory
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it will be renamed to \<destination\>
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If mulitple elements register a source location with the same <destination>
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then source-repositories will exit with an error. Care should therefore be taken
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to only use elements together that download source to different locations.
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The repository paths built into the image are stored in
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etc/dib-source-repositories, one repository per line. This permits later review
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of the repositories (by users or by other elements).
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