Introduce type Server

backend/generic.go

@@ -22,8 +22,8 @@ var (
 // Each lists all entries of type t in the backend and calls function f() with
 // the id and data.
 func Each(be interface {
-	lister
-	getter
+	Lister
+	Getter
 }, t Type, f func(id ID, data []byte, err error)) error {
 	ids, err := be.List(t)
 	if err != nil {
@@ -45,7 +45,7 @@ func Each(be interface {
 
 // Each lists all entries of type t in the backend and calls function f() with
 // the id.
-func EachID(be lister, t Type, f func(ID)) error {
+func EachID(be Lister, t Type, f func(ID)) error {
 	ids, err := be.List(t)
 	if err != nil {
 		return err
@@ -101,7 +101,7 @@ func Hash(data []byte) ID {
 // Find loads the list of all blobs of type t and searches for IDs which start
 // with prefix. If none is found, nil and ErrNoIDPrefixFound is returned. If
 // more than one is found, nil and ErrMultipleIDMatches is returned.
-func Find(be lister, t Type, prefix string) (ID, error) {
+func Find(be Lister, t Type, prefix string) (ID, error) {
 	p, err := hex.DecodeString(prefix)
 	if err != nil {
 		return nil, err
@@ -134,7 +134,7 @@ func Find(be lister, t Type, prefix string) (ID, error) {
 
 // FindSnapshot takes a string and tries to find a snapshot whose ID matches
 // the string as closely as possible.
-func FindSnapshot(be lister, s string) (ID, error) {
+func FindSnapshot(be Lister, s string) (ID, error) {
 	// parse ID directly
 	if id, err := ParseID(s); err == nil {
 		return id, nil
@@ -151,7 +151,7 @@ func FindSnapshot(be lister, s string) (ID, error) {
 
 // PrefixLength returns the number of bytes required so that all prefixes of
 // all IDs of type t are unique.
-func PrefixLength(be lister, t Type) (int, error) {
+func PrefixLength(be Lister, t Type) (int, error) {
 	// load all IDs of the given type
 	list, err := be.List(t)
 	if err != nil {

backend/interface.go

@@ -21,43 +21,43 @@ var (
 	ErrAlreadyPresent = errors.New("blob is already present in backend")
 )
 
-type lister interface {
+type Lister interface {
 	List(Type) (IDs, error)
 }
 
-type getter interface {
+type Getter interface {
 	Get(Type, ID) ([]byte, error)
 }
 
-type creater interface {
+type Creater interface {
 	Create(Type, []byte) (ID, error)
 }
 
-type tester interface {
+type Tester interface {
 	Test(Type, ID) (bool, error)
 }
 
-type remover interface {
+type Remover interface {
 	Remove(Type, ID) error
 }
 
-type closer interface {
+type Closer interface {
 	Close() error
 }
 
-type deleter interface {
+type Deleter interface {
 	Delete() error
 }
 
-type locationer interface {
+type Locationer interface {
 	Location() string
 }
 
-type backend interface {
-	lister
-	getter
-	creater
-	tester
-	remover
-	closer
+type Backend interface {
+	Lister
+	Getter
+	Creater
+	Tester
+	Remover
+	Closer
 }