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website: update new buidler interface

This commit is contained in:
Mitchell Hashimoto 2013-06-12 16:07:52 -07:00
parent 521b59a6fa
commit 66faf73799
1 changed files with 4 additions and 2 deletions
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website/source/docs/extend/builder.html.markdown
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@ -38,7 +38,7 @@ type Builder interface {
// Run is where the actual build should take place. It takes a Ui to
// send messages to the user, Hook to execute hooks, and Cache in order
// to save files across runs.
Run(Ui, Hook, Cache) Artifact
Run(Ui, Hook, Cache) (Artifact, error)
// Cancel cancels a possibly running Builder. This should block until
// the builder actually cancels and cleans up after itself.
@ -87,7 +87,9 @@ how the built-in builders are all implemented.
Finally, as a result of `Run`, an implementation of `packer.Artifact` should
be returned. More details on creating a `packer.Artifact` are covered in the
artifact section below.
artifact section below. If something goes wrong during the build, an error
can be returned, as well. Note that it is perfectly fine to produce no artifact
and no error, although this is rare.
### The "Cancel" Method