Add TARGET_RESOURCE variable for BackupConfigurationTemplate (#814)

Author: Md. Emruz Hossain

apis/constants.go

@@ -18,6 +18,7 @@ const (
 	TargetName        = "TARGET_NAME"
 	TargetAPIVersion  = "TARGET_API_VERSION"
 	TargetKind        = "TARGET_KIND"
+	TargetResource    = "TARGET_RESOURCE"
 	TargetNamespace   = "TARGET_NAMESPACE"
 	TargetMountPath   = "TARGET_MOUNT_PATH"
 	TargetDirectories = "TARGET_DIRECTORIES"

go.mod

@@ -32,7 +32,7 @@ require (
 	github.com/stretchr/testify v1.3.0
 	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f // indirect
 	golang.org/x/net v0.0.0-20190522155817-f3200d17e092 // indirect
-	golang.org/x/sys v0.0.0-20190523142557-0e01d883c5c5 // indirect
+	golang.org/x/sys v0.0.0-20190528183647-3626398d7749 // indirect
 	gomodules.xyz/cert v1.0.0
 	gomodules.xyz/envsubst v0.0.0-20190321051520-c745d52104af
 	google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873 // indirect

go.sum

@@ -439,8 +439,8 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190508100423-12bbe5a7a520 h1:5/ojcKo2vQ2eroPDFcBB9tuc4N42a5njs7UWP2jk3KU=
 golang.org/x/sys v0.0.0-20190508100423-12bbe5a7a520/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190523142557-0e01d883c5c5 h1:sM3evRHxE/1RuMe1FYAL3j7C7fUfIjkbE+NiDAYUF8U=
-golang.org/x/sys v0.0.0-20190523142557-0e01d883c5c5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190528183647-3626398d7749 h1:oG2HS+e2B9VqK95y67B5MgJIJhOPY27/m5uJKJhHzus=
+golang.org/x/sys v0.0.0-20190528183647-3626398d7749/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

pkg/controller/backup.go

@@ -10,6 +10,7 @@ import (
 	"k8s.io/client-go/kubernetes/scheme"
 	"k8s.io/client-go/tools/reference"
 	core_util "kmodules.xyz/client-go/core/v1"
+	discovery "kmodules.xyz/client-go/discovery"
 	meta_util "kmodules.xyz/client-go/meta"
 	wapi "kmodules.xyz/webhook-runtime/apis/workload/v1"
 	"stash.appscode.dev/stash/apis"
@@ -69,6 +70,12 @@ func (c *StashController) applyBackupAnnotationLogic(w *wapi.Workload) error {
 		inputs[apis.TargetName] = w.Name
 		inputs[apis.TargetNamespace] = w.Namespace
 
+		gvr, err := discovery.ResourceForGVK(c.kubeClient.Discovery(), w.GroupVersionKind())
+		if err != nil {
+			return err
+		}
+		inputs[apis.TargetResource] = gvr.Resource
+
 		err = resolve.ResolveBackend(&backupTemplate.Spec.Backend, inputs)
 		if err != nil {
 			return err