Adding depth in case of git config in fetch section of app/package

config/config/crds.yml

@@ -209,6 +209,10 @@ spec:
                             git:
                               description: Uses git to clone repository
                               properties:
+                                depth:
+                                  description: depth of commits to fetch; 1 (default) means only latest commit, 0 means everything (optional)
+                                  format: int64
+                                  type: integer
                                 forceHTTPBasicAuth:
                                   description: Force the usage of HTTP Basic Auth when Basic Auth is provided (optional)
                                   type: boolean
@@ -828,6 +832,10 @@ spec:
                     git:
                       description: Uses git to clone repository
                       properties:
+                        depth:
+                          description: depth of commits to fetch; 1 (default) means only latest commit, 0 means everything (optional)
+                          format: int64
+                          type: integer
                         forceHTTPBasicAuth:
                           description: Force the usage of HTTP Basic Auth when Basic Auth is provided (optional)
                           type: boolean
@@ -1653,6 +1661,10 @@ spec:
                   git:
                     description: Uses git to clone repository containing package list
                     properties:
+                      depth:
+                        description: depth of commits to fetch; 1 (default) means only latest commit, 0 means everything (optional)
+                        format: int64
+                        type: integer
                       forceHTTPBasicAuth:
                         description: Force the usage of HTTP Basic Auth when Basic Auth is provided (optional)
                         type: boolean

pkg/apis/kappctrl/v1alpha1/types_fetch.go

@@ -109,6 +109,9 @@ type AppFetchGit struct {
 	// Force the usage of HTTP Basic Auth when Basic Auth is provided (optional)
 	// +optional
 	ForceHTTPBasicAuth bool `json:"forceHTTPBasicAuth,omitempty" protobuf:"varint,7,opt,name=forceHTTPBasicAuth"`
+	// depth of commits to fetch; 1 (default) means only latest commit, 0 means everything (optional)
+	// +optional
+	Depth *int64 `json:"depth,omitempty" protobuf:"bytes,8,opt,name=depth"`
 }
 
 // +k8s:openapi-gen=true

pkg/fetch/vendir.go

@@ -160,6 +160,13 @@ func (v *Vendir) httpConf(http v1alpha1.AppFetchHTTP) vendirconf.DirectoryConten
 }
 
 func (v *Vendir) gitConf(git v1alpha1.AppFetchGit) vendirconf.DirectoryContents {
+
+	// By default, we only fetch the latest commit.
+	depth := 1
+	if git.Depth != nil {
+		depth = int(*(git.Depth))
+	}
+
 	return vendirconf.DirectoryContents{
 		Path:        vendirEntireDirPath,
 		NewRootPath: git.SubPath,
@@ -171,6 +178,7 @@ func (v *Vendir) gitConf(git v1alpha1.AppFetchGit) vendirconf.DirectoryContents
 			LFSSkipSmudge:          git.LFSSkipSmudge,
 			DangerousSkipTLSVerify: v.shouldSkipTLSVerify(git.URL, GitURL),
 			ForceHTTPBasicAuth:     git.ForceHTTPBasicAuth,
+			Depth:                  depth,
 		},
 	}
 }

pkg/fetch/vendir_test.go

@@ -149,3 +149,38 @@ func TestExtractHost(t *testing.T) {
 		})
 	}
 }
+
+func Test_GitConfig_depth(t *testing.T) {
+	k8scs := k8sfake.NewSimpleClientset()
+	config, err := kcconfig.NewConfig(k8scs)
+	assert.NoError(t, err)
+
+	vendir := fetch.NewVendir("default", k8scs,
+		fetch.VendirOpts{SkipTLSConfig: config}, exec.NewPlainCmdRunner())
+
+	type testCase struct {
+		URL           string
+		Depth         *int64
+		ExpectedDepth int
+	}
+	testCases := []testCase{
+		{"https://github.com/bitnami/charts/", convertToInt64(1), 1},
+		{"https://gitlab.com/bitnami/charts/", convertToInt64(0), 0},
+		{"https://gitlab.com/bitnami/charts/", nil, 1},
+	}
+	for i, tc := range testCases {
+		err = vendir.AddDir(v1alpha1.AppFetch{
+			Git: &v1alpha1.AppFetchGit{URL: tc.URL, Depth: tc.Depth},
+		},
+			"dirpath/0")
+		assert.NoError(t, err)
+
+		vConf := vendir.Config()
+		assert.Equal(t, i+1, len(vConf.Directories), "Failed on iteration %d", i)
+		assert.Equal(t, tc.ExpectedDepth, vConf.Directories[i].Contents[0].Git.Depth, "Expected depth: %d, Got: %d", tc.ExpectedDepth, vConf.Directories[i].Contents[0].Git.Depth)
+	}
+}
+
+func convertToInt64(x int64) *int64 {
+	return &x
+}