In buildconfig, detect current branch and it's remote url as defaults.

cli/command/command.go

@@ -152,7 +152,7 @@ func ConvertOpenShiftCommand() cli.Command {
 			},
 			cli.StringFlag{
 				Name:   "build-branch",
-				Value:  "master",
+				Value:  "",
 				Usage:  "Specify repository branch to use for buildconfig (default master)",
 				EnvVar: "BUILDBRANCH",
 			},

cmd/convert.go

@@ -113,8 +113,8 @@ Available Commands:{{range .Commands}}{{if .IsAvailableCommand}}
   {{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{ if .HasAvailableLocalFlags}}
 
 Resource Flags:
-      --build-branch             Specify repository branch to use for buildconfig (default master)
-      --build-repo               Specify source repository for buildconfig (default remote origin)
+      --build-branch             Specify repository branch to use for buildconfig (default is current branch name)
+      --build-repo               Specify source repository for buildconfig (default is current branch's remote url
   -c, --chart                    Create a Helm chart for converted objects
       --daemon-set               Generate a Kubernetes daemonset object
   -d, --deployment               Generate a Kubernetes deployment object

pkg/transformer/openshift/openshift.go

@@ -100,6 +100,29 @@ func getGitRemote(composeFileDir string, remote string) (string, error) {
 	return url, nil
 }
 
+// getGitCurrentBranch gets current git branch name for the current git repo
+func getGitCurrentBranch(composeFileDir string) (string, error) {
+	cmd := exec.Command("git", "rev-parse", "--abbrev-ref", "HEAD")
+	cmd.Dir = composeFileDir
+	out, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+	return strings.TrimRight(string(out), "\n"), nil
+}
+
+// getGitRemoteForBranch gets git remote for a branch
+func getGitRemoteForBranch(composeFileDir string, branch string) (string, error) {
+	cmd := exec.Command("sh", "-c", fmt.Sprintf("git branch -r | grep %s", branch))
+	cmd.Dir = composeFileDir
+
+	out, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+	return strings.Split(strings.Trim(string(out), "\n "), "/")[0], nil
+}
+
 // getComposeFileDir returns compose file directory
 func getComposeFileDir(inputFile string) (string, error) {
 	if strings.Index(inputFile, "/") != 0 {
@@ -302,6 +325,7 @@ func (o *OpenShift) Transform(komposeObject kobject.KomposeObject, opt kobject.C
 	var composeFileDir string
 	hasBuild := false
 	buildRepo := opt.BuildRepo
+	buildBranch := opt.BuildBranch
 
 	for name, service := range komposeObject.ServiceConfigs {
 		var objects []runtime.Object
@@ -326,14 +350,26 @@ func (o *OpenShift) Transform(komposeObject kobject.KomposeObject, opt kobject.C
 						logrus.Warningf("Error in detecting compose file's directory.")
 						continue
 					}
+					if !hasGitBinary() && (buildRepo == "" || buildBranch == "") {
+						logrus.Fatalf("Git is not installed! Please install Git to create buildconfig, else supply source repository to use for build using '--build-repo' option.")
+					}
+					if buildBranch == "" {
+						buildBranch, err = getGitCurrentBranch(composeFileDir)
+						if err != nil {
+							logrus.Fatalf("Buildconfig cannot be created because current git branch couldn't be detected.")
+						}
+					}
 					if opt.BuildRepo == "" {
-						if hasGitBinary() {
-							buildRepo, err = getGitRemote(composeFileDir, "origin")
+						var buildRemote string
+						buildRemote, err = getGitRemoteForBranch(composeFileDir, buildBranch)
+						if err != nil {
+							logrus.Fatalf("Buildconfig cannot be created because remote for current git branch couldn't be detected.")
+						}
+						buildRepo, err = getGitRemote(composeFileDir, buildRemote)
 						if err != nil {
 							logrus.Fatalf("Buildconfig cannot be created because git remote origin repo couldn't be detected.")
 						}
 					}
-					}
 					hasBuild = true
 				}
 				objects = append(objects, initBuildConfig(name, service, opt.InputFile, buildRepo, opt.BuildBranch)) // Openshift BuildConfigs