b33ed9e5d2
Introduce the `distro` package, which contains an interface for OS implementations. Its main purpose is to convert a blueprint to a distro-specific pipeline. Also introduce the `distro/fedora30` package. It is the first implementation of the distro interface. Most of its code has been copied with minimal modifications from the blueprint package. The `blueprint` package is now back to serving a single purpose: representing a weldr blueprint. It does not depend on the `pipeline` package anymore. Change osbuild-composer and osbuild-pipeline to use the new API, hard-coding "fedora-30". This looks a bit weird now, but is the same behavior as before. All test cases now also take an "distro" key in the "compose" object.
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
package distro
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import (
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"github.com/osbuild/osbuild-composer/internal/blueprint"
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"github.com/osbuild/osbuild-composer/internal/pipeline"
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)
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type Distro interface {
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// Returns a sorted list of the output formats this distro supports.
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ListOutputFormats() []string
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// Returns the canonical filename and MIME type for a given output
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// format
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FilenameFromType(outputFormat string) (string, string, error)
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// Returns an osbuild pipeline that generates an image in the given
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// output format with all packages and customizations specified in the
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// given blueprint. `outputFormat` must be one returned by
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// ListOutputFormats().
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Pipeline(b *blueprint.Blueprint, outputFormat string) (*pipeline.Pipeline, error)
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}
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// An InvalidOutputFormatError is returned when a requested output format is
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// not supported. The requested format is included as the error message.
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type InvalidOutputFormatError struct {
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Format string
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}
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func (e *InvalidOutputFormatError) Error() string {
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return e.Format
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}
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var registered = map[string]Distro{}
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func New(name string) Distro {
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distro, ok := registered[name]
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if !ok {
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panic("unknown distro: " + name)
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}
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return distro
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}
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func Register(name string, distro Distro) {
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if _, exists := registered[name]; exists {
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panic("a distro with this name already exists: " + name)
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}
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registered[name] = distro
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}
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