Make product API versions independently installable

backend/product/app/urls/internal/domain_provider.go

@@ -2,8 +2,8 @@ package domainproviderimp
 
 import (
 	"net/url"
-	"os"
 
+	"git.sendico.io/tech/sxchnge/shared/errors"
 	"git.sendico.io/tech/sxchnge/shared/logging"
 	"go.uber.org/zap"
 )
@@ -21,11 +21,19 @@ func (dp *DomainProviderImp) GetAPILink(linkElem ...string) (string, error) {
 	return url.JoinPath(dp.apiEndpoint, linkElem...)
 }
 
-func CreateDomainProviderImp(logger mlogger.Logger, domain, protocol, apiPointEnv string) (*DomainProviderImp, error) {
+func CreateDomainProviderImp(logger mlogger.Logger, domain, protocol, apiPath string) (*DomainProviderImp, error) {
+	if protocol != "http" && protocol != "https" {
+		return nil, merrors.InvalidArgument("API protocol must be http or https")
+	}
+	parsed, err := url.Parse(protocol + "://" + domain)
+	if err != nil {
+		return nil, merrors.OpaqueWrap(merrors.ErrInvalidArg, err, "invalid API origin")
+	}
+	if parsed.Hostname() == "" || parsed.Host != domain || parsed.User != nil || parsed.Path != "" || parsed.RawQuery != "" || parsed.Fragment != "" {
+		return nil, merrors.InvalidArgument("API domain must be a host with optional port")
+	}
 	p := new(DomainProviderImp)
-	p.domain = os.Getenv(protocol) + "://" + os.Getenv(domain)
-	var err error
-	apiPath := os.Getenv(apiPointEnv)
+	p.domain = protocol + "://" + domain
 	if p.apiEndpoint, err = url.JoinPath(p.domain, apiPath); err != nil {
 		logger.Error("Failed to create domain provider", zap.String("domain", p.domain), zap.String("api_path", apiPath))
 		return nil, err