Function ProviderParts

pkg/policies/loader.go:279–328

ProviderParts returns the provider information for a given reference

(reference string)

// ProviderParts returns the provider information for a given reference
func ProviderParts(reference string) *ProviderRef {
	var ref, digest string
	// first of all, remove the @sha256 suffix to make the parsing easier
	withDigest := strings.SplitN(reference, "@sha256:", 2)

	if len(withDigest) > 1 {
		// it has digest
		ref = withDigest[0]
		digest = withDigest[1]
	} else {
		ref = reference
	}

	parts := strings.SplitN(ref, "://", 2)
	var pn []string
	if len(parts) == 1 {
		pn = strings.SplitN(parts[0], ":", 2)
	} else {
		// ref might contain the chainloop://protocol
		pn = strings.SplitN(parts[1], ":", 2)
	}

	var (
		provider string
		orgName  string
		name     = pn[0]
	)

	if len(pn) == 2 {
		provider = pn[0]
		name = pn[1]
	}
	scoped := strings.SplitN(name, "/", 2)
	if len(scoped) == 2 {
		// the policy is scoped to a specific org
		orgName = scoped[0]
		name = scoped[1]
	}

	// return the digest back
	if digest != "" {
		name = fmt.Sprintf("%s@sha256:%s", name, digest)
	}

	return &ProviderRef{
		Provider: provider,
		Name:     name,
		OrgName:  orgName,
	}
}

func ensureScheme(ref string, expected ...string) (string, error) {
	scheme, id := RefParts(ref)