This change more or less completely changes how `ko://` is handled internally to `ko`, but the user-facing changes should only be net-positive. `ko://` was previously stripped at the highest level, and the build logic was unaware, which had some undesirable diagnostic/functional implications that are collectively addressed in this change.
With this change, the `ko://` prefix is preserved and passed to the build logic, which internally parses a new `reference` type (this was useful to have Go's type checker find all of the places that needed fixing). The main functional differences are:
1. If a reference is prefixed with `ko://` we will now fail fast in `IsSupportedReference` regardless of whether `--strict` is passed.
2. If a reference is prefixed with `ko://` it will bypass the prefix check, which allows the use of `ko://github.com/another/repo` that references a vendored binary package.
For `2.` the absence of the module prefix causes the filtering logic Jon introduced to avoid the reference. This was critical for efficiency when `ko://` isn't around because we feed every string in the yaml through it, but when the user has explicitly decorated things it's the perfect thing to be sensitive to.
Fixes: https://github.com/google/ko/issues/146
Fixes: https://github.com/google/ko/issues/152
* Create a MultiPublisher
MultiPublisher mimics io.MultiWriter in that it will publish an image to
multiple publish.Interface implementations.
* Add publish.{Tarball,Layout}Publisher
This adds support for publishing in the tarball format and to an OCI
image layout.
The tarball format isn't great, yet. It only supports writing once
instead of appending.
* Consolidate options
These were spread all over the place for no reasons. Now all the
publisher related options are grouped together.
* Add options for tarball/layout
Adds --oci-layout-path, --tarball, and --push flags.
--push=false will disable the default behavior of publishing to a
registry.
* go mod vendor
* Add Close method to publish.Interface
This allows us to defer writing to the tarball until we've collected all
the images that have been published.
* Fix tests
* Preserve YAML comments & style when resolving/applying
This is accomplished by adopting the yaml.v3 lib. It
exposes a Node struct that's used internally by the
yaml encoder/decoder
ko internally now manipulates YAML documents using this struct
Fixes#101
* add/remove vendored modules
* Apply suggestions from code review
Fix comments
Co-Authored-By: jonjohnsonjr <jonjohnson@google.com>
* update doc link
* Fix use of yaml.Decoder in a test
When the yaml.Decoder returns an io.EOF it implies
there were no YAML documents decoded and that there
are no more!
* Update pkg/resolve/resolve.go
resolve comment suggestion
Co-Authored-By: jonjohnsonjr <jonjohnson@google.com>
* leave ko prefix if we're not operating in strict mode
* move testutils to internal/testing
