Add fs filestore

config.go

@@ -17,13 +17,20 @@ type ServerConfig struct {
 }
 
 type ServerStoreConfig struct {
-	Type string `toml:"Type"`
+	Type string                    `toml:"Type"`
+	FS   *ServerStoreFSStoreConfig `toml:"FS"`
+}
+
+type ServerStoreFSStoreConfig struct {
+	Dir string `toml:"Dir"`
 }
 
 func ServerConfigFromReader(r io.Reader) (*ServerConfig, error) {
 	decoder := toml.NewDecoder(r)
 	c := ServerConfig{
-		Store: &ServerStoreConfig{},
+		Store: &ServerStoreConfig{
+			FS: &ServerStoreFSStoreConfig{},
+		},
 	}
 	if err := decoder.Decode(&c); err != nil {
 		return nil, fmt.Errorf("error decoding server config: %w", err)
@@ -50,4 +57,8 @@ func (sc *ServerConfig) updateFromEnv() {
 	if value, ok := os.LookupEnv("GPASTE_STORE_TYPE"); ok {
 		sc.Store.Type = value
 	}
+
+	if value, ok := os.LookupEnv("GPASTE_STORE_FS_DIR"); ok {
+		sc.Store.FS.Dir = value
+	}
 }

config_test.go

@@ -18,14 +18,19 @@ URL = "http://paste.example.org"
 ListenAddr = ":8080"
 
 [Store]
-Type = "memory"
+Type = "fs"
+[Store.FS]
+Dir = "/tmp"
 `
 		expected := &gpaste.ServerConfig{
 			LogLevel:   "INFO",
 			URL:        "http://paste.example.org",
 			ListenAddr: ":8080",
 			Store: &gpaste.ServerStoreConfig{
-				Type: "memory",
+				Type: "fs",
+				FS: &gpaste.ServerStoreFSStoreConfig{
+					Dir: "/tmp",
+				},
 			},
 		}
 		sr := strings.NewReader(simpleConfig)
@@ -43,17 +48,21 @@ Type = "memory"
 		clearEnv()
 
 		var envMap map[string]string = map[string]string{
-			"GPASTE_LOGLEVEL":   "DEBUG",
-			"GPASTE_URL":        "http://gpaste.example.org",
-			"GPASTE_STORE_TYPE": "memory",
-			"GPASTE_LISTENADDR": ":8000",
+			"GPASTE_LOGLEVEL":     "DEBUG",
+			"GPASTE_URL":          "http://gpaste.example.org",
+			"GPASTE_STORE_TYPE":   "fs",
+			"GPASTE_LISTENADDR":   ":8000",
+			"GPASTE_STORE_FS_DIR": "/tmp",
 		}
 		expected := &gpaste.ServerConfig{
 			LogLevel:   "DEBUG",
 			URL:        "http://gpaste.example.org",
 			ListenAddr: ":8000",
 			Store: &gpaste.ServerStoreConfig{
-				Type: "memory",
+				Type: "fs",
+				FS: &gpaste.ServerStoreFSStoreConfig{
+					Dir: "/tmp",
+				},
 			},
 		}
 

filestore.go

@@ -6,12 +6,12 @@ import (
 )
 
 type File struct {
-	ID               string
-	OriginalFilename string
-	Body             io.ReadCloser
+	ID               string    `json:"id"`
+	OriginalFilename string    `json:"original_filename"`
+	MaxViews         uint      `json:"max_views"`
+	ExpiresOn        time.Time `json:"expires_on"`
 
-	MaxViews  uint
-	ExpiresOn time.Time
+	Body io.ReadCloser
 }
 
 type FileStore interface {

filestore_fs.go

@@ -0,0 +1,115 @@
+package gpaste
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+)
+
+type FSFileStore struct {
+	dir      string
+	metadata map[string]*File
+}
+
+func NewFSFileStore(dir string) (*FSFileStore, error) {
+	s := &FSFileStore{
+		dir:      dir,
+		metadata: make(map[string]*File),
+	}
+
+	err := s.readMetadata()
+
+	return s, err
+}
+func (s *FSFileStore) Store(f *File) error {
+	defer f.Body.Close()
+
+	metadata := &File{
+		ID:               f.ID,
+		OriginalFilename: f.OriginalFilename,
+		MaxViews:         f.MaxViews,
+		ExpiresOn:        f.ExpiresOn,
+	}
+
+	path := filepath.Join(s.dir, f.ID)
+	dst, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer dst.Close()
+
+	if _, err := io.Copy(dst, f.Body); err != nil {
+		return err
+	}
+	s.metadata[f.ID] = metadata
+	if err := s.writeMetadata(); err != nil {
+		delete(s.metadata, f.ID)
+		return err
+	}
+	return nil
+}
+
+func (s *FSFileStore) Get(id string) (*File, error) {
+	metadata, ok := s.metadata[id]
+	if !ok {
+		return nil, fmt.Errorf("no such item")
+	}
+
+	path := filepath.Join(s.dir, id)
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	metadata.Body = f
+	return metadata, nil
+}
+
+func (s *FSFileStore) Delete(id string) error {
+	path := filepath.Join(s.dir, id)
+	if err := os.Remove(path); err != nil {
+		return err
+	}
+	delete(s.metadata, id)
+	return nil
+}
+
+func (s *FSFileStore) List() ([]string, error) {
+	var results []string
+	for k := range s.metadata {
+		results = append(results, k)
+	}
+	return results, nil
+}
+
+func (s *FSFileStore) writeMetadata() error {
+	path := filepath.Join(s.dir, "metadata.json")
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	encoder := json.NewEncoder(f)
+	if err := encoder.Encode(s.metadata); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s *FSFileStore) readMetadata() error {
+	path := filepath.Join(s.dir, "metadata.json")
+	f, err := os.Open(path)
+	if err != nil {
+		// TODO: Handle errors better
+		return nil
+	}
+	defer f.Close()
+
+	decoder := json.NewDecoder(f)
+	if err := decoder.Decode(&s.metadata); err != nil {
+		return err
+	}
+	return nil
+}

filestore_fs_test.go

@@ -0,0 +1,17 @@
+package gpaste_test
+
+import (
+	"testing"
+
+	"git.t-juice.club/torjus/gpaste"
+)
+
+func TestFSFileStore(t *testing.T) {
+	dir := t.TempDir()
+	s, err := gpaste.NewFSFileStore(dir)
+	if err != nil {
+		t.Fatalf("Error creating store: %s", err)
+	}
+
+	RunFilestoreTest(s, t)
+}