initializing shallow cloning logic and CRD change

Author: ayushsatyam146

cmd/git/main.go

@@ -96,7 +96,8 @@ func init() {
 	// Optional flag to be able to override the default shallow clone depth,
 	// which should be fine for almost all use cases we use the Git source step
 	// for (in the context of Shipwright build).
-	pflag.UintVar(&flagValues.depth, "depth", 1, "Create a shallow clone based on the given depth")
+	// Setting depth to 0 means no shallow clone (full clone)
+	pflag.UintVar(&flagValues.depth, "depth", 0, "Create a shallow clone with the given depth. 0 means full clone (no shallow).")
 
 	// Mostly internal flag
 	pflag.BoolVar(&flagValues.skipValidation, "skip-validation", false, "skip pre-requisite validation")
@@ -124,7 +125,7 @@ func main() {
 
 // Execute performs flag parsing, input validation and the Git clone
 func Execute(ctx context.Context) error {
-	flagValues = settings{depth: 1}
+	flagValues = settings{depth: 0}
 	pflag.Parse()
 
 	if val, ok := os.LookupEnv("GIT_SHOW_LISTING"); ok {
@@ -286,6 +287,7 @@ func clone(ctx context.Context) error {
 			cloneArgs = append(cloneArgs, "--branch", flagValues.revision)
 		}
 
+		// Only add depth if it's greater than 0 (meaning shallow clone is requested)
 		if flagValues.depth > 0 {
 			cloneArgs = append(cloneArgs, "--depth", fmt.Sprintf("%d", flagValues.depth))
 		}

deploy/crds/shipwright.io_builds.yaml

@@ -494,6 +494,13 @@ spec:
                   url:
                     description: URL describes the URL of the Git repository.
                     type: string
+                  shallowCloneDepth:
+                    description: |-
+                      The depth of the shallow clone. If not specified or set to 0, 
+                      a full clone will be performed. Values greater than 0 will 
+                      create a shallow clone with the specified depth.
+                    type: integer
+                    minimum: 0
                 type: object
               sources:
                 description: |-
@@ -2853,6 +2860,13 @@ spec:
                       url:
                         description: URL describes the URL of the Git repository.
                         type: string
+                      shallowCloneDepth:
+                        description: |-
+                          The depth of the shallow clone. If not specified or set to 0, 
+                          a full clone will be performed. Values greater than 0 will 
+                          create a shallow clone with the specified depth.
+                        type: integer
+                        minimum: 0
                     required:
                     - url
                     type: object

docs/build.md

@@ -142,6 +142,7 @@ A `Build` resource can specify a source type, such as a Git repository or an OCI
 - `source.git.url` - Specify the source location using a Git repository.
 - `source.git.cloneSecret` - For private repositories or registries, the name references a secret in the namespace that contains the SSH private key or Docker access credentials, respectively.
 - `source.git.revision` - A specific revision to select from the source repository, this can be a commit, tag or branch name. If not defined, it will fall back to the Git repository default branch.
+- `source.git.shallowCloneDepth` - The depth of the shallow clone. If not specified or set to 0, a full clone will be performed. Values greater than 0 will create a shallow clone with the specified depth.
 - `source.contextDir` - For repositories where the source code is not located at the root folder, you can specify this path here.
 
 By default, the Build controller does not validate that the Git repository exists. If the validation is desired, users can explicitly define the `build.shipwright.io/verify.repository` annotation with `true`. For example:

pkg/apis/build/v1beta1/build_conversion.go

@@ -446,7 +446,6 @@ func getAlphaBuildSource(src BuildSpec) v1alpha1.Source {
 			source.URL = &src.Source.Git.URL
 			revision = src.Source.Git.Revision
 		}
-
 	}
 
 	if credentials.Name != "" {

pkg/apis/build/v1beta1/source.go

@@ -62,6 +62,13 @@ type Git struct {
 	//
 	// +optional
 	CloneSecret *string `json:"cloneSecret,omitempty"`
+
+	// ShallowCloneDepth specifies the depth of the shallow clone.
+	// If not specified or set to 0, a full clone will be performed.
+	// Values greater than 0 will create a shallow clone with the specified depth.
+	//
+	// +optional
+	ShallowCloneDepth *int `json:"shallowCloneDepth,omitempty"`
 }
 
 // OCIArtifact describes how to obtain source code from a container image, also known as an OCI

pkg/reconciler/buildrun/resources/sources/git.go

@@ -79,6 +79,15 @@ func AppendGitStep(
 		)
 	}
 
+	// Check if shallow clone is requested
+	if source.ShallowCloneDepth != nil && *source.ShallowCloneDepth > 0 {
+		gitStep.Args = append(
+			gitStep.Args,
+			"--depth",
+			fmt.Sprintf("%d", *source.ShallowCloneDepth),
+		)
+	}
+
 	// If configure, use Git URL rewrite flag
 	if cfg.GitRewriteRule {
 		gitStep.Args = append(gitStep.Args, "--git-url-rewrite")