refactor(api): API overhaul (#392)

api/bolt/datastore.go

@@ -0,0 +1,58 @@
+package bolt
+
+import (
+	"github.com/boltdb/bolt"
+	"time"
+)
+
+// Store defines the implementation of portainer.DataStore using
+// BoltDB as the storage system.
+type Store struct {
+	// Path where is stored the BoltDB database.
+	Path string
+
+	// Services
+	UserService *UserService
+
+	db *bolt.DB
+}
+
+const (
+	databaseFileName = "portainer.db"
+	userBucketName   = "users"
+)
+
+// NewStore initializes a new Store and the associated services
+func NewStore(storePath string) *Store {
+	store := &Store{
+		Path:        storePath,
+		UserService: &UserService{},
+	}
+	store.UserService.store = store
+	return store
+}
+
+// Open opens and initializes the BoltDB database.
+func (store *Store) Open() error {
+	path := store.Path + "/" + databaseFileName
+	db, err := bolt.Open(path, 0600, &bolt.Options{Timeout: 1 * time.Second})
+	if err != nil {
+		return err
+	}
+	store.db = db
+	return db.Update(func(tx *bolt.Tx) error {
+		_, err := tx.CreateBucketIfNotExists([]byte(userBucketName))
+		if err != nil {
+			return err
+		}
+		return nil
+	})
+}
+
+// Close closes the BoltDB database.
+func (store *Store) Close() error {
+	if store.db != nil {
+		return store.db.Close()
+	}
+	return nil
+}

api/bolt/internal/internal.go

@@ -0,0 +1,17 @@
+package internal
+
+import (
+	"github.com/portainer/portainer"
+
+	"encoding/json"
+)
+
+// MarshalUser encodes a user to binary format.
+func MarshalUser(user *portainer.User) ([]byte, error) {
+	return json.Marshal(user)
+}
+
+// UnmarshalUser decodes a user from a binary data.
+func UnmarshalUser(data []byte, user *portainer.User) error {
+	return json.Unmarshal(data, user)
+}

api/bolt/user_service.go

@@ -0,0 +1,56 @@
+package bolt
+
+import (
+	"github.com/portainer/portainer"
+	"github.com/portainer/portainer/bolt/internal"
+
+	"github.com/boltdb/bolt"
+)
+
+// UserService represents a service for managing users.
+type UserService struct {
+	store *Store
+}
+
+// User returns a user by username.
+func (service *UserService) User(username string) (*portainer.User, error) {
+	var data []byte
+	err := service.store.db.View(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(userBucketName))
+		value := bucket.Get([]byte(username))
+		if value == nil {
+			return portainer.ErrUserNotFound
+		}
+
+		data = make([]byte, len(value))
+		copy(data, value)
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var user portainer.User
+	err = internal.UnmarshalUser(data, &user)
+	if err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+// UpdateUser saves a user.
+func (service *UserService) UpdateUser(user *portainer.User) error {
+	data, err := internal.MarshalUser(user)
+	if err != nil {
+		return err
+	}
+
+	return service.store.db.Update(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(userBucketName))
+		err = bucket.Put([]byte(user.Username), data)
+		if err != nil {
+			return err
+		}
+		return nil
+	})
+}