add clone options

internal/config/config.go

@@ -142,7 +142,9 @@ type BaseStep struct {
 }
 
 type CloneStep struct {
-	BaseStep `json:",inline"`
+	BaseStep          `json:",inline"`
+	Depth             *int `json:"depth"`
+	RecurseSubmodules bool `json:"recurse_submodules"`
 }
 
 type RunStep struct {
@@ -793,6 +795,10 @@ func checkConfig(config *Config) error {
 				// TODO(sgotti) we could use the run step command as step name but when the
 				// command is very long or multi line it doesn't makes sense and will
 				// probably be quite unuseful/confusing from an UI point of view
+				case *CloneStep:
+					if step.Depth != nil && *step.Depth < 1 {
+						return errors.Errorf("depth value must be greater than 0 for clone step in task %q", task.Name)
+					}
 				case *RunStep:
 					if step.Command == "" {
 						return errors.Errorf("no command defined for step %d (run) in task %q", i, task.Name)

internal/runconfig/runconfig.go

@@ -57,10 +57,9 @@ func stepFromConfigStep(csi interface{}, variables map[string]string) interface{
 	case *config.CloneStep:
 		// transform a "clone" step in a "run" step command
 		rs := &config.RunStep{}
-
 		rs.Type = "run"
 		rs.Name = "Clone repository and checkout code"
-		rs.Command = `
+		rs.Command = fmt.Sprintf(`
 set -x
 
 mkdir ~/.ssh
@@ -96,15 +95,15 @@ Host $AGOLA_GIT_HOST
 EOF
 )
 
-git clone $AGOLA_REPOSITORY_URL .
+git clone %s $AGOLA_REPOSITORY_URL .
 git fetch origin $AGOLA_GIT_REF
 
 if [ -n "$AGOLA_GIT_COMMITSHA" ]; then
 	git checkout $AGOLA_GIT_COMMITSHA
 else
 	git checkout FETCH_HEAD
 fi
-`
+`, genCloneOptions(cs))
 
 		return rs
 
@@ -444,3 +443,14 @@ func genValue(val config.Value, variables map[string]string) string {
 		panic(fmt.Errorf("wrong value type: %q", val.Value))
 	}
 }
+
+func genCloneOptions(c *config.CloneStep) string {
+	cloneoptions := []string{}
+	if c.Depth != nil {
+		cloneoptions = append(cloneoptions, fmt.Sprintf("--depth %d", *c.Depth))
+	}
+	if c.RecurseSubmodules {
+		cloneoptions = append(cloneoptions, "--recurse-submodules")
+	}
+	return strings.Join(cloneoptions, " ")
+}