From aaf19de118bb9af6b726f90b4a86e1bf244541fd Mon Sep 17 00:00:00 2001
From: Brad Wadsworth <wadsworth.brad@gmail.com>
Date: Sun, 26 Jan 2025 15:38:24 -0600
Subject: [PATCH] Added ability to ignore Kustomize component directory if it
 does not exist

Signed-off-by: Brad Wadsworth <wadsworth.brad@gmail.com>
---
 pkg/apis/application/v1alpha1/types.go |  2 ++
 util/kustomize/kustomize.go            | 16 +++++++++++++++-
 util/kustomize/kustomize_test.go       |  3 ++-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/pkg/apis/application/v1alpha1/types.go b/pkg/apis/application/v1alpha1/types.go
index a53500172d94d..37ffeb8fdb423 100644
--- a/pkg/apis/application/v1alpha1/types.go
+++ b/pkg/apis/application/v1alpha1/types.go
@@ -653,6 +653,8 @@ type ApplicationSourceKustomize struct {
 	Patches KustomizePatches `json:"patches,omitempty" protobuf:"bytes,12,opt,name=patches"`
 	// Components specifies a list of kustomize components to add to the kustomization before building
 	Components []string `json:"components,omitempty" protobuf:"bytes,13,rep,name=components"`
+	// IgnoreMissingComponents prevents kustomize from failing when components do not exist locally by not appending them to kustomization file
+	IgnoreMissingComponents bool `json:"ignoreMissingComponents,omitempty" protobuf:"bytes,8,opt,name=ignoreMissingComponents"`
 	// LabelWithoutSelector specifies whether to apply common labels to resource selectors or not
 	LabelWithoutSelector bool `json:"labelWithoutSelector,omitempty" protobuf:"bytes,14,opt,name=labelWithoutSelector"`
 	// KubeVersion specifies the Kubernetes API version to pass to Helm when templating manifests. By default, Argo CD
diff --git a/util/kustomize/kustomize.go b/util/kustomize/kustomize.go
index ed6417b106d2a..fe1a25edb0358 100644
--- a/util/kustomize/kustomize.go
+++ b/util/kustomize/kustomize.go
@@ -6,6 +6,7 @@ import (
 	"net/url"
 	"os"
 	"os/exec"
+	"path"
 	"path/filepath"
 	"regexp"
 	"sort"
@@ -310,8 +311,21 @@ func (k *kustomize) Build(opts *v1alpha1.ApplicationSourceKustomize, kustomizeOp
 			}
 
 			// add components
+			foundComponents := opts.Components
+			if opts.IgnoreMissingComponents {
+				foundComponents = make([]string, 0)
+				for _, c := range opts.Components {
+					resolvedPath := path.Join(k.path, c)
+					_, err := os.Stat(resolvedPath)
+					if err != nil {
+						log.Debugf("%s component directory does not exist", resolvedPath)
+						continue
+					}
+					foundComponents = append(foundComponents, c)
+				}
+			}
 			args := []string{"edit", "add", "component"}
-			args = append(args, opts.Components...)
+			args = append(args, foundComponents...)
 			cmd := exec.Command(k.getBinaryPath(), args...)
 			cmd.Dir = k.path
 			cmd.Env = env
diff --git a/util/kustomize/kustomize_test.go b/util/kustomize/kustomize_test.go
index bf8d122bd379b..55de018374501 100644
--- a/util/kustomize/kustomize_test.go
+++ b/util/kustomize/kustomize_test.go
@@ -445,7 +445,8 @@ func TestKustomizeBuildComponents(t *testing.T) {
 	kustomize := NewKustomizeApp(appPath, appPath, git.NopCreds{}, "", "", "", "")
 
 	kustomizeSource := v1alpha1.ApplicationSourceKustomize{
-		Components: []string{"./components"},
+		Components:              []string{"./components", "./missing-components"},
+		IgnoreMissingComponents: true,
 	}
 	objs, _, _, err := kustomize.Build(&kustomizeSource, nil, nil, nil)
 	require.NoError(t, err)