bug: fix annotation bug (#1887)

#### What type of PR is this?

<!--
Add one of the following kinds:
/kind bug
/kind cleanup
/kind documentation
/kind feature
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#### What this PR does / why we need it:

When supplying a label in the compose file, it should stay in the output
too.

#### Which issue(s) this PR fixes:
<!--
*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
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Fixes https://github.com/kubernetes/kompose/issues/1885

#### Special notes for your reviewer:

Signed-off-by: Charlie Drage <charlie@charliedrage.com>

pkg/transformer/utils.go

@@ -249,10 +249,6 @@ func ConfigAllLabels(name string, service *kobject.ServiceConfig) map[string]str
 func ConfigAnnotations(service kobject.ServiceConfig) map[string]string {
 	annotations := map[string]string{}
 
-	if !service.WithKomposeAnnotation {
-		return annotations
-	}
-
 	for key, value := range service.Annotations {
 		annotations[key] = value
 	}
@@ -270,6 +266,15 @@ func ConfigAnnotations(service kobject.ServiceConfig) map[string]string {
 		annotations["kompose.version"] = version.VERSION + " (" + version.GITCOMMIT + ")"
 	}
 
+	// if service.WithKomposeAnnotation = false, we remove **all** kompose annotations (io.kompose.*)
+	if !service.WithKomposeAnnotation {
+		for key := range annotations {
+			if strings.HasPrefix(key, "kompose.") {
+				delete(annotations, key)
+			}
+		}
+	}
+
 	return annotations
 }
 

script/test/cmd/tests.sh

@@ -386,3 +386,8 @@ os_cmd="kompose -f $KOMPOSE_ROOT/script/test/fixtures/envvars-with-status/compos
 os_output="$KOMPOSE_ROOT/script/test/fixtures/envvars-with-status/output-os.yaml"
 convert::expect_success "$k8s_cmd" "$k8s_output" || exit 1
 convert::expect_success "$os_cmd" "$os_output" || exit 1
+
+# Test label in compose.yaml appears in the output annotation
+k8s_cmd="kompose -f $KOMPOSE_ROOT/script/test/fixtures/label/compose.yaml convert --stdout --with-kompose-annotation=false"
+k8s_output="$KOMPOSE_ROOT/script/test/fixtures/label/output-k8s.yaml"
+convert::expect_success "$k8s_cmd" "$k8s_output" || exit 1

script/test/fixtures/configmap-file-configs/compose-3.yaml

@@ -5,6 +5,4 @@ services:
       - "8081:8080"
       - "8026:8025"
     volumes:
-      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - /tmp:/tmp:ro
-      - /sys:/sys:ro
-      - /var/lib/docker/:/var/lib/docker:ro

script/test/fixtures/configmap-file-configs/output-k8s-3.yaml

@@ -45,3 +45,4 @@ spec:
             - containerPort: 8025
               protocol: TCP
       restartPolicy: Always
+

script/test/fixtures/configmap-file-configs/output-os-3.yaml

@@ -73,3 +73,4 @@ spec:
       name: latest
       referencePolicy:
         type: ""
+

script/test/fixtures/label/compose.yaml

@@ -0,0 +1,7 @@
+services:
+  app:
+    image: node:18-alpine
+    ports:
+      - 3000:3000
+    labels:
+      - "com.example.label=foo"

script/test/fixtures/label/output-k8s.yaml

@@ -0,0 +1,47 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    com.example.label: foo
+  labels:
+    io.kompose.service: app
+  name: app
+spec:
+  ports:
+    - name: "3000"
+      port: 3000
+      targetPort: 3000
+  selector:
+    io.kompose.service: app
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  annotations:
+    com.example.label: foo
+  labels:
+    io.kompose.service: app
+  name: app
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      io.kompose.service: app
+  template:
+    metadata:
+      annotations:
+        com.example.label: foo
+      labels:
+        io.kompose.network/label-default: "true"
+        io.kompose.service: app
+    spec:
+      containers:
+        - image: node:18-alpine
+          name: app
+          ports:
+            - containerPort: 3000
+              protocol: TCP
+      restartPolicy: Always
+