ValueAddTransformer

Makefile

@@ -124,7 +124,8 @@ _builtinplugins = \
 	PatchTransformer.go \
 	PrefixSuffixTransformer.go \
 	ReplicaCountTransformer.go \
-	SecretGenerator.go
+	SecretGenerator.go \
+	ValueAddTransformer.go
 
 # Maintaining this explicit list of generated files, and
 # adding it as a dependency to a few targets, to assure
@@ -149,6 +150,7 @@ $(pGen)/PatchTransformer.go: $(pSrc)/patchtransformer/PatchTransformer.go
 $(pGen)/PrefixSuffixTransformer.go: $(pSrc)/prefixsuffixtransformer/PrefixSuffixTransformer.go
 $(pGen)/ReplicaCountTransformer.go: $(pSrc)/replicacounttransformer/ReplicaCountTransformer.go
 $(pGen)/SecretGenerator.go: $(pSrc)/secretgenerator/SecretGenerator.go
+$(pGen)/ValueAddTransformer.go: $(pSrc)/valueaddtransformer/ValueAddTransformer.go
 
 # The (verbose but portable) Makefile way to convert to lowercase.
 toLowerCase = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))

api/internal/plugins/builtinhelpers/builtins.go

@@ -26,6 +26,7 @@ const (
 	PrefixSuffixTransformer
 	ReplicaCountTransformer
 	SecretGenerator
+	ValueAddTransformer
 )
 
 var stringToBuiltinPluginTypeMap map[string]BuiltinPluginType
@@ -70,4 +71,5 @@ var TransformerFactories = map[BuiltinPluginType]func() resmap.TransformerPlugin
 	PatchTransformer:               builtins.NewPatchTransformerPlugin,
 	PrefixSuffixTransformer:        builtins.NewPrefixSuffixTransformerPlugin,
 	ReplicaCountTransformer:        builtins.NewReplicaCountTransformerPlugin,
+	ValueAddTransformer:            builtins.NewValueAddTransformerPlugin,
 }

api/internal/target/kusttarget_configplugin.go

@@ -4,6 +4,8 @@
 package target
 
 import (
+	"fmt"
+
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinconfig"
 	"sigs.k8s.io/kustomize/api/internal/plugins/builtinhelpers"
 	"sigs.k8s.io/kustomize/api/resmap"
@@ -290,4 +292,10 @@ var transformerConfigurators = map[builtinhelpers.BuiltinPluginType]func(
 		}
 		return
 	},
+	// No kustomization file keyword for this yet.
+	builtinhelpers.ValueAddTransformer: func(
+		kt *KustTarget, bpt builtinhelpers.BuiltinPluginType, f tFactory, tc *builtinconfig.TransformerConfig) (
+		result []resmap.Transformer, err error) {
+		return nil, fmt.Errorf("valueadd keyword not yet defined")
+	},
 }

examples/README.md

@@ -10,6 +10,10 @@ to work with the latest _released_ version of kustomize.
 
 Basic Usage
 
+  * [valueAdd](valueAdd.md) - 
+    Add a simple string value easily to various fields, including
+    fields that happen to hold file paths.
+
   * [configGenerations](configGeneration.md) -
    Rolling update when ConfigMapGenerator changes.