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package config
import (
"errors"
"fmt"
"os"
dockerclient "github.com/fsouza/go-dockerclient"
"github.com/openshift/imagebuilder"
)
// configOnlyExecutor implements the Executor interface that an
// imagebuilder.Builder expects to be able to call to do some heavy lifting,
// but it just refuses to do the work of ADD, COPY, or RUN. It also doesn't
// care if the working directory exists in a container, because it's really
// only concerned with letting the Builder's RunConfig get updated by changes
// from a Dockerfile. Try anything more than that and it'll return an error.
type configOnlyExecutor struct{}
func (g *configOnlyExecutor) Preserve(_ string) error {
return errors.New("ADD/COPY/RUN not supported as changes")
}
func (g *configOnlyExecutor) EnsureContainerPath(_ string) error {
return nil
}
func (g *configOnlyExecutor) EnsureContainerPathAs(_, _ string, _ *os.FileMode) error {
return nil
}
func (g *configOnlyExecutor) Copy(_ []string, copies ...imagebuilder.Copy) error {
if len(copies) == 0 {
return nil
}
return errors.New("ADD/COPY not supported as changes")
}
func (g *configOnlyExecutor) Run(_ imagebuilder.Run, _ dockerclient.Config) error {
return errors.New("RUN not supported as changes")
}
func (g *configOnlyExecutor) UnrecognizedInstruction(step *imagebuilder.Step) error {
return fmt.Errorf("did not understand change instruction %q", step.Original)
}
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