Implement jqPaths field using delpaths() instead of del()

Signed-off-by: puretension <[email protected]>

debug_test.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+
+	"github.com/argoproj/argo-cd/v3/pkg/apis/application/v1alpha1"
+	"github.com/argoproj/argo-cd/v3/test"
+	"github.com/argoproj/argo-cd/v3/util/argo/normalizers"
+)
+
+func main() {
+	// Create normalizer with JQPaths
+	normalizer, err := normalizers.NewIgnoreNormalizer([]v1alpha1.ResourceIgnoreDifferences{{
+		Group:   "apps",
+		Kind:    "Deployment",
+		JQPaths: []string{`.metadata.annotations // {} | [keys[] | select(startswith("customprefix.")) | ["metadata", "annotations", .]]`},
+	}}, make(map[string]v1alpha1.ResourceOverride), normalizers.IgnoreNormalizerOpts{})
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	deployment := test.NewDeployment()
+	deployment.SetAnnotations(map[string]string{
+		"customprefix.annotation1": "value1",
+		"customprefix.annotation2": "value2",
+		"other.annotation":         "keep-this",
+	})
+
+	fmt.Println("Before normalization:")
+	data, _ := json.MarshalIndent(deployment.Object, "", "  ")
+	fmt.Println(string(data))
+
+	// Apply normalization
+	err = normalizer.Normalize(deployment)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println("\nAfter normalization:")
+	data, _ = json.MarshalIndent(deployment.Object, "", "  ")
+	fmt.Println(string(data))
+
+	fmt.Println("\nAnnotations:")
+	fmt.Printf("%+v\n", deployment.GetAnnotations())
+}

docs/user-guide/diffing.md

@@ -57,6 +57,19 @@ spec:
         - .spec.template.spec.initContainers[] | select(.name == "injected-init-container")
 ```
 
+For more complex scenarios where you need to delete multiple paths based on JQ queries, use `jqPaths`. This field expects JQ queries that produce arrays of paths for use with `delpaths()`:
+
+```yaml
+spec:
+  ignoreDifferences:
+    - group: apps
+      kind: Deployment
+      jqPaths:
+        - '.metadata.annotations // {} | [keys[] | select(startswith("customprefix.")) | ["metadata", "annotations", .]]'
+```
+
+The above example will ignore all annotations that start with "customprefix." by generating the appropriate paths and using `delpaths()` to remove them.
+
 To ignore fields owned by specific managers defined in your live resources:
 
 ```yaml