From 6544629d4e428ed4d5588ee48606690fcd58781a Mon Sep 17 00:00:00 2001
From: Balazs Nagy <julsevern@gmail.com>
Date: Sat, 22 Oct 2022 22:25:58 +0200
Subject: [PATCH] distinguish individual resources with generateName

---
 api/filters/nameref/nameref.go      |  9 ++-
 api/krusty/resourceconflict_test.go | 86 +++++++++++++++++++++++++++++
 kyaml/yaml/rnode.go                 | 18 +++++-
 3 files changed, 110 insertions(+), 3 deletions(-)

diff --git a/api/filters/nameref/nameref.go b/api/filters/nameref/nameref.go
index 7549ab7001..44c0590415 100644
--- a/api/filters/nameref/nameref.go
+++ b/api/filters/nameref/nameref.go
@@ -402,8 +402,13 @@ func (f Filter) confirmNodeMatchesReferrer(node *yaml.RNode) error {
 		return err
 	}
 	if err = checkEqual(
-		"Name", meta.Name, f.Referrer.GetName()); err != nil {
-		return err
+		"generateName",
+		meta.GenerateName,
+		f.Referrer.GetGenerateName()); err != nil {
+		if err = checkEqual(
+			"Name", meta.Name, f.Referrer.GetName()); err != nil {
+			return err
+		}
 	}
 	if err = checkEqual(
 		"Namespace", meta.Namespace, f.Referrer.GetNamespace()); err != nil {
diff --git a/api/krusty/resourceconflict_test.go b/api/krusty/resourceconflict_test.go
index 713e21feb4..5bb2d3f797 100644
--- a/api/krusty/resourceconflict_test.go
+++ b/api/krusty/resourceconflict_test.go
@@ -13,12 +13,28 @@ import (
 func writeBase(th kusttest_test.Harness) {
 	th.WriteK("base", `
 resources:
+- job.yaml
 - serviceaccount.yaml
 - rolebinding.yaml
 - clusterrolebinding.yaml
 - clusterrole.yaml
 namePrefix: pfx-
 nameSuffix: -sfx
+`)
+	th.WriteF("base/job.yaml", `
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: job-
+spec:
+  template:
+    spec:
+      containers:
+      - name: job
+        image: run/job:1.0
+        command:
+        - echo
+        - done
 `)
 	th.WriteF("base/serviceaccount.yaml", `
 apiVersion: v1
@@ -94,6 +110,20 @@ func TestBase(t *testing.T) {
 	writeBase(th)
 	m := th.Run("base", th.MakeDefaultOptions())
 	th.AssertActualEqualsExpected(m, `
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: job-
+spec:
+  template:
+    spec:
+      containers:
+      - command:
+        - echo
+        - done
+        image: run/job:1.0
+        name: job
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -145,6 +175,20 @@ func TestMidLevelA(t *testing.T) {
 	writeMidOverlays(th)
 	m := th.Run("overlays/a", th.MakeDefaultOptions())
 	th.AssertActualEqualsExpected(m, `
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: job-
+spec:
+  template:
+    spec:
+      containers:
+      - command:
+        - echo
+        - done
+        image: run/job:1.0
+        name: job
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -196,6 +240,20 @@ func TestMidLevelB(t *testing.T) {
 	writeMidOverlays(th)
 	m := th.Run("overlays/b", th.MakeDefaultOptions())
 	th.AssertActualEqualsExpected(m, `
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: job-
+spec:
+  template:
+    spec:
+      containers:
+      - command:
+        - echo
+        - done
+        image: run/job:1.0
+        name: job
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -248,6 +306,20 @@ func TestMultibasesNoConflict(t *testing.T) {
 	writeTopOverlay(th)
 	m := th.Run("combined", th.MakeDefaultOptions())
 	th.AssertActualEqualsExpected(m, `
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: job-
+spec:
+  template:
+    spec:
+      containers:
+      - command:
+        - echo
+        - done
+        image: run/job:1.0
+        name: job
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -291,6 +363,20 @@ rules:
   - watch
   - list
 ---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  generateName: job-
+spec:
+  template:
+    spec:
+      containers:
+      - command:
+        - echo
+        - done
+        image: run/job:1.0
+        name: job
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
diff --git a/kyaml/yaml/rnode.go b/kyaml/yaml/rnode.go
index b39c8037b4..a17ea2c79d 100644
--- a/kyaml/yaml/rnode.go
+++ b/kyaml/yaml/rnode.go
@@ -4,6 +4,7 @@
 package yaml
 
 import (
+	"crypto/sha256"
 	"encoding/json"
 	"fmt"
 	"log"
@@ -432,10 +433,25 @@ func (rn *RNode) getMapFieldValue(field string) *yaml.Node {
 	return nil
 }
 
+// GetGenerateName returns the name, or empty string if
+// field not found.  The setter is more restrictive.
+func (rn *RNode) GetGenerateName() string {
+	return rn.getMetaStringField(GenerateNameField)
+}
+
 // GetName returns the name, or empty string if
 // field not found.  The setter is more restrictive.
 func (rn *RNode) GetName() string {
-	return rn.getMetaStringField(NameField)
+	name := rn.getMetaStringField(NameField)
+	if name == "" {
+		data := rn.MustString()
+		suffix := fmt.Sprintf("%x", sha256.Sum256([]byte(data)))
+
+		name = fmt.Sprintf("%s[%s]", rn.GetGenerateName(), suffix[:10])
+
+	}
+
+	return name
 }
 
 // getMetaStringField returns the value of a string field in metadata.