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Signed-off-by: Matej Vasek <mvasek@redhat.com> |
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README.md
Templates
Packaging
When updates are made to these templates, they must be packaged (serialized as a Go byte array)
by running make generate/zz_filesystem_generated.go, and checking in the resultant ./generate/zz_filesystem_generated.go file.
How it works
The ./generate/templates directory contains Go program that generates ./generate/zz_filesystem_generated.go.
The file defines byte array variable named TemplatesZip.
The variable contains ZIP representation of the templates directory.
The byte array variable is then used to instantiate exported global variable function.EmbeddedTemplatesFS,
which implements standard Go interfaces fs.ReadDirFS and fs.StatFS.
Rationale
Until such time as embedding static assets in binaries is included in the
base go build functionality (see https://github.com/golang/go/issues/35950)
we need to use our custom serialization script (./generate/templates/main.go).
Native Go embedding introduced in Go 1.16 could be used for executable binary, however it cannot be used for library. For a library we need to generate a Go source code containing the templates.