Installation store now returns an error with installation and not claim

Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

Author: silvin-lubecki

internal/store/app.go

@@ -57,7 +57,8 @@ func (a ApplicationStore) InstallationStore(context string) (InstallationStore,
 	if err := os.MkdirAll(path, 0755); err != nil {
 		return nil, errors.Wrapf(err, "failed to create installation store directory for context %q", context)
 	}
-	return claim.NewClaimStore(crud.NewFileSystemStore(path, "json")), nil
+	claimStore := claim.NewClaimStore(crud.NewFileSystemStore(path, "json"))
+	return &installationStore{claimStore: claimStore}, nil
 }
 
 // CredentialStore initializes and returns a context based credential store

internal/store/installation.go

@@ -1,13 +1,41 @@
 package store
 
-import "github.com/deislabs/duffle/pkg/claim"
+import (
+	"fmt"
+
+	"github.com/deislabs/duffle/pkg/claim"
+)
 
 // InstallationStore is an interface to persist claims.
 type InstallationStore interface {
 	List() ([]string, error)
-	Store(installationName claim.Claim) error
+	Store(installation claim.Claim) error
 	Read(installationName string) (claim.Claim, error)
 	Delete(installationName string) error
 }
 
-var _ InstallationStore = &claim.Store{}
+var _ InstallationStore = &installationStore{}
+
+type installationStore struct {
+	claimStore claim.Store
+}
+
+func (i installationStore) List() ([]string, error) {
+	return i.claimStore.List()
+}
+
+func (i installationStore) Store(installation claim.Claim) error {
+	return i.claimStore.Store(installation)
+}
+
+func (i installationStore) Read(installationName string) (claim.Claim, error) {
+	c, err := i.claimStore.Read(installationName)
+	if err == claim.ErrClaimNotFound {
+		return claim.Claim{}, fmt.Errorf("Installation %q not found", installationName)
+	}
+	return c, err
+}
+
+func (i installationStore) Delete(installationName string) error {
+	return i.claimStore.Delete(installationName)
+}