fix: CMPv2 does not allow symlinks to adjacent files in same git repo. Fixes #13342

reposerver/repository/repository.go

@@ -1918,7 +1918,7 @@ func runConfigManagementPluginSidecars(ctx context.Context, appPath, repoPath, p
 	}
 
 	// detect config management plugin server (sidecar)
-	conn, cmpClient, err := discovery.DetectConfigManagementPlugin(ctx, appPath, pluginName, env, tarExcludedGlobs)
+	conn, cmpClient, err := discovery.DetectConfigManagementPlugin(ctx, repoPath, pluginName, env, tarExcludedGlobs)
 	if err != nil {
 		return nil, err
 	}
@@ -2169,7 +2169,7 @@ func populatePluginAppDetails(ctx context.Context, res *apiclient.RepoAppDetails
 		pluginName = q.Source.Plugin.Name
 	}
 	// detect config management plugin server (sidecar)
-	conn, cmpClient, err := discovery.DetectConfigManagementPlugin(ctx, appPath, pluginName, env, tarExcludedGlobs)
+	conn, cmpClient, err := discovery.DetectConfigManagementPlugin(ctx, repoPath, pluginName, env, tarExcludedGlobs)
 	if err != nil {
 		return fmt.Errorf("failed to detect CMP for app: %w", err)
 	}

test/e2e/custom_tool_test.go

@@ -350,3 +350,60 @@ func TestPreserveFileModeForCMP(t *testing.T) {
 			assert.Equal(t, "ConfigMap", app.Status.Resources[0].Kind)
 		})
 }
+
+func TestCMPWithSymlinkPartialFiles(t *testing.T) {
+	Given(t).
+		And(func() {
+			go startCMPServer("./testdata/cmp-symlink")
+			time.Sleep(1 * time.Second)
+			os.Setenv("ARGOCD_BINARY_NAME", "argocd")
+		}).
+		Path("guestbook-partial-symlink-files").
+		When().
+		CreateFromFile(func(app *Application) {
+			app.Spec.Source.Plugin = &ApplicationSourcePlugin{Name: "cmp-symlink-v1.0"}
+		}).
+		Sync().
+		Then().
+		Expect(OperationPhaseIs(OperationSucceeded)).
+		Expect(SyncStatusIs(SyncStatusCodeSynced)).
+		Expect(HealthIs(health.HealthStatusHealthy))
+}
+
+func TestCMPWithSymlinkFolder(t *testing.T) {
+	Given(t).
+		And(func() {
+			go startCMPServer("./testdata/cmp-symlink")
+			time.Sleep(1 * time.Second)
+			os.Setenv("ARGOCD_BINARY_NAME", "argocd")
+		}).
+		Path("guestbook-symlink-folder").
+		When().
+		CreateFromFile(func(app *Application) {
+			app.Spec.Source.Plugin = &ApplicationSourcePlugin{Name: "cmp-symlink-v1.0"}
+		}).
+		Sync().
+		Then().
+		Expect(OperationPhaseIs(OperationSucceeded)).
+		Expect(SyncStatusIs(SyncStatusCodeSynced)).
+		Expect(HealthIs(health.HealthStatusHealthy))
+}
+
+func TestCMPWithSymlinkFiles(t *testing.T) {
+	Given(t).
+		And(func() {
+			go startCMPServer("./testdata/cmp-symlink")
+			time.Sleep(1 * time.Second)
+			os.Setenv("ARGOCD_BINARY_NAME", "argocd")
+		}).
+		Path("guestbook-symlink-files").
+		When().
+		CreateFromFile(func(app *Application) {
+			app.Spec.Source.Plugin = &ApplicationSourcePlugin{Name: "cmp-symlink-v1.0"}
+		}).
+		Sync().
+		Then().
+		Expect(OperationPhaseIs(OperationSucceeded)).
+		Expect(SyncStatusIs(SyncStatusCodeSynced)).
+		Expect(HealthIs(health.HealthStatusHealthy))
+}

test/e2e/testdata/cmp-symlink/plugin.yaml

@@ -0,0 +1,10 @@
+apiVersion: argoproj.io/v1alpha1
+kind: ConfigManagementPlugin
+metadata:
+  name: cmp-symlink
+spec:
+  version: v1.0
+  init:
+    command: [kustomize, version]
+  generate:
+    command: [sh, -c, 'kustomize build --load-restrictor LoadRestrictionsNone']

test/e2e/testdata/guestbook-partial-symlink-files/guestbook-ui-deployment.yaml

@@ -0,0 +1 @@
+../guestbook/guestbook-ui-deployment.yaml

test/e2e/testdata/guestbook-partial-symlink-files/guestbook-ui-svc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: guestbook-ui
+spec:
+  ports:
+  - port: 80
+    targetPort: 80
+  selector:
+    app: guestbook-ui

test/e2e/testdata/guestbook-partial-symlink-files/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ./guestbook-ui-deployment.yaml
+  - ./guestbook-ui-svc.yaml

test/e2e/testdata/guestbook-symlink-files/guestbook-ui-deployment.yaml

@@ -0,0 +1 @@
+../guestbook/guestbook-ui-deployment.yaml

test/e2e/testdata/guestbook-symlink-files/guestbook-ui-svc.yaml

@@ -0,0 +1 @@
+../guestbook/guestbook-ui-svc.yaml

test/e2e/testdata/guestbook-symlink-files/kustomization.yaml

@@ -0,0 +1 @@
+../guestbook/kustomization.yaml

test/e2e/testdata/guestbook-symlink-folder

@@ -0,0 +1 @@
+guestbook