add multikeysend endpoint

controllers_v2/keysend.ctrl.go

@@ -28,6 +28,18 @@ type KeySendRequestBody struct {
 	CustomRecords map[string]string `json:"customRecords" validate:"omitempty"`
 }
 
+type MultiKeySendRequestBody struct {
+	Keysends []KeySendRequestBody `json:"keysends"`
+}
+type MultiKeySendResponseBody struct {
+	Keysends []KeySendResult `json:"keysends"`
+}
+
+type KeySendResult struct {
+	Keysend KeySendResponseBody     `json:",omitempty"`
+	Error   responses.ErrorResponse `json:",omitempty"`
+}
+
 type KeySendResponseBody struct {
 	Amount          int64  `json:"amount"`
 	Fee             int64  `json:"fee"`
@@ -57,10 +69,71 @@ func (controller *KeySendController) KeySend(c echo.Context) error {
 		c.Logger().Errorf("Failed to load keysend request body: %v", err)
 		return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
 	}
+	_, err := controller.SingleKeySend(c, &reqBody, userID)
+	return err
+}
+
+// // MultiKeySend godoc
+// @Summary      Make multiple keysend payments
+// @Description  Pay multiple nodes without an invoice using their public key
+// @Accept       json
+// @Produce      json
+// @Tags         Payment
+// @Param        MultiKeySendRequestBody  body      MultiKeySendRequestBody  True  "Invoice to pay"
+// @Success      200                 {object}  MultiKeySendResponseBody
+// @Failure      400                 {object}  responses.ErrorResponse
+// @Failure      500                 {object}  responses.ErrorResponse
+// @Router       /v2/payments/keysend/multi [post]
+// @Security     OAuth2Password
+func (controller *KeySendController) MultiKeySend(c echo.Context) error {
+	// TODO
+	// - V create request and response structs
+	// - V extract shared code
+	// - V call shared code in loop
+	// - V fill and return response
+	// - test
+	// - integration tests
+	// - PR
+	// - deploy
+	// - Update API
+	// - mail sam
+	userID := c.Get("UserID").(int64)
+	reqBody := MultiKeySendRequestBody{}
+	if err := c.Bind(&reqBody); err != nil {
+		c.Logger().Errorf("Failed to load keysend request body: %v", err)
+		return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
+	}
+	result := &MultiKeySendResponseBody{
+		Keysends: []KeySendResult{},
+	}
+	for _, keysend := range reqBody.Keysends {
+		keysend := keysend
+		res, err := controller.SingleKeySend(c, &keysend, userID)
+		if err != nil {
+			controller.svc.Logger.Errorf("Error making keysend split payment %v %s", keysend, err.Error())
+			result.Keysends = append(result.Keysends, KeySendResult{
+				Keysend: KeySendResponseBody{
+					Destination: keysend.Destination,
+				},
+				Error: responses.ErrorResponse{Error: true, Code: 500, Message: err.Error()},
+			})
+		}
+		result.Keysends = append(result.Keysends, KeySendResult{
+			Keysend: *res,
+			Error: responses.ErrorResponse{
+				Error: false,
+				Code:  200,
+			},
+		})
+	}
+	return c.JSON(http.StatusOK, result)
+}
+
+func (controller *KeySendController) SingleKeySend(c echo.Context, reqBody *KeySendRequestBody, userID int64) (result *KeySendResponseBody, err error) {
 
 	if err := c.Validate(&reqBody); err != nil {
 		c.Logger().Errorf("Invalid keysend request body: %v", err)
-		return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
+		return nil, c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
 	}
 
 	lnPayReq := &lnd.LNPayReq{
@@ -74,12 +147,12 @@ func (controller *KeySendController) KeySend(c echo.Context) error {
 
 	invoice, err := controller.svc.AddOutgoingInvoice(c.Request().Context(), userID, "", lnPayReq)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	currentBalance, err := controller.svc.CurrentUserBalance(c.Request().Context(), userID)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	minimumBalance := invoice.Amount
@@ -88,14 +161,14 @@ func (controller *KeySendController) KeySend(c echo.Context) error {
 	}
 	if currentBalance < minimumBalance {
 		c.Logger().Errorf("User does not have enough balance invoice_id:%v user_id:%v balance:%v amount:%v", invoice.ID, userID, currentBalance, invoice.Amount)
-		return c.JSON(http.StatusBadRequest, responses.NotEnoughBalanceError)
+		return nil, c.JSON(http.StatusBadRequest, responses.NotEnoughBalanceError)
 	}
 
 	invoice.DestinationCustomRecords = map[uint64][]byte{}
 	for key, value := range reqBody.CustomRecords {
 		intKey, err := strconv.Atoi(key)
 		if err != nil {
-			return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
+			return nil, c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
 		}
 		invoice.DestinationCustomRecords[uint64(intKey)] = []byte(value)
 	}
@@ -103,7 +176,7 @@ func (controller *KeySendController) KeySend(c echo.Context) error {
 	if err != nil {
 		c.Logger().Errorf("Payment failed: user_id:%v error: %v", userID, err)
 		sentry.CaptureException(err)
-		return c.JSON(http.StatusBadRequest, echo.Map{
+		return nil, c.JSON(http.StatusBadRequest, echo.Map{
 			"error":   true,
 			"code":    10,
 			"message": err.Error(),
@@ -119,5 +192,5 @@ func (controller *KeySendController) KeySend(c echo.Context) error {
 		PaymentHash:     sendPaymentResponse.PaymentHashStr,
 	}
 
-	return c.JSON(http.StatusOK, responseBody)
+	return responseBody, c.JSON(http.StatusOK, responseBody)
 }

docs/docs.go

@@ -397,6 +397,57 @@ const docTemplate = `{
                 }
             }
         },
+        "/v2/payments/keysend/multi": {
+            "post": {
+                "security": [
+                    {
+                        "OAuth2Password": []
+                    }
+                ],
+                "description": "Pay multiple nodes without an invoice using their public key",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Payment"
+                ],
+                "summary": "Make multiple keysend payments",
+                "parameters": [
+                    {
+                        "description": "Invoice to pay",
+                        "name": "MultiKeySendRequestBody",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/v2controllers.MultiKeySendRequestBody"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "$ref": "#/definitions/v2controllers.MultiKeySendResponseBody"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    },
+                    "500": {
+                        "description": "Internal Server Error",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/v2/users": {
             "post": {
                 "description": "Create a new account with a login and password",
@@ -543,6 +594,9 @@ const docTemplate = `{
         "v2controllers.CreateUserResponseBody": {
             "type": "object",
             "properties": {
+                "id": {
+                    "type": "integer"
+                },
                 "login": {
                     "type": "string"
                 },
@@ -660,6 +714,39 @@ const docTemplate = `{
                 }
             }
         },
+        "v2controllers.KeySendResult": {
+            "type": "object",
+            "properties": {
+                "error": {
+                    "$ref": "#/definitions/responses.ErrorResponse"
+                },
+                "keysend": {
+                    "$ref": "#/definitions/v2controllers.KeySendResponseBody"
+                }
+            }
+        },
+        "v2controllers.MultiKeySendRequestBody": {
+            "type": "object",
+            "properties": {
+                "keysends": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/v2controllers.KeySendRequestBody"
+                    }
+                }
+            }
+        },
+        "v2controllers.MultiKeySendResponseBody": {
+            "type": "object",
+            "properties": {
+                "keysends": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/v2controllers.KeySendResult"
+                    }
+                }
+            }
+        },
         "v2controllers.PayInvoiceRequestBody": {
             "type": "object",
             "required": [
@@ -719,7 +806,7 @@ var SwaggerInfo = &swag.Spec{
 	Version:          "0.9.0",
 	Host:             "",
 	BasePath:         "/",
-	Schemes:          []string{"https", "http"},
+	Schemes:          []string{},
 	Title:            "LndHub.go",
 	Description:      "Accounting wrapper for the Lightning Network providing separate accounts for end-users.",
 	InfoInstanceName: "swagger",

docs/swagger.json

@@ -1,8 +1,4 @@
 {
-    "schemes": [
-        "https",
-        "http"
-    ],
     "swagger": "2.0",
     "info": {
         "description": "Accounting wrapper for the Lightning Network providing separate accounts for end-users.",
@@ -393,6 +389,57 @@
                 }
             }
         },
+        "/v2/payments/keysend/multi": {
+            "post": {
+                "security": [
+                    {
+                        "OAuth2Password": []
+                    }
+                ],
+                "description": "Pay multiple nodes without an invoice using their public key",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Payment"
+                ],
+                "summary": "Make multiple keysend payments",
+                "parameters": [
+                    {
+                        "description": "Invoice to pay",
+                        "name": "MultiKeySendRequestBody",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/v2controllers.MultiKeySendRequestBody"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "$ref": "#/definitions/v2controllers.MultiKeySendResponseBody"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    },
+                    "500": {
+                        "description": "Internal Server Error",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/v2/users": {
             "post": {
                 "description": "Create a new account with a login and password",
@@ -539,6 +586,9 @@
         "v2controllers.CreateUserResponseBody": {
             "type": "object",
             "properties": {
+                "id": {
+                    "type": "integer"
+                },
                 "login": {
                     "type": "string"
                 },
@@ -656,6 +706,39 @@
                 }
             }
         },
+        "v2controllers.KeySendResult": {
+            "type": "object",
+            "properties": {
+                "error": {
+                    "$ref": "#/definitions/responses.ErrorResponse"
+                },
+                "keysend": {
+                    "$ref": "#/definitions/v2controllers.KeySendResponseBody"
+                }
+            }
+        },
+        "v2controllers.MultiKeySendRequestBody": {
+            "type": "object",
+            "properties": {
+                "keysends": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/v2controllers.KeySendRequestBody"
+                    }
+                }
+            }
+        },
+        "v2controllers.MultiKeySendResponseBody": {
+            "type": "object",
+            "properties": {
+                "keysends": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/v2controllers.KeySendResult"
+                    }
+                }
+            }
+        },
         "v2controllers.PayInvoiceRequestBody": {
             "type": "object",
             "required": [

docs/swagger.yaml

@@ -64,6 +64,8 @@ definitions:
     type: object
   v2controllers.CreateUserResponseBody:
     properties:
+      id:
+        type: integer
       login:
         type: string
       password:
@@ -141,6 +143,27 @@ definitions:
       payment_preimage:
         type: string
     type: object
+  v2controllers.KeySendResult:
+    properties:
+      error:
+        $ref: '#/definitions/responses.ErrorResponse'
+      keysend:
+        $ref: '#/definitions/v2controllers.KeySendResponseBody'
+    type: object
+  v2controllers.MultiKeySendRequestBody:
+    properties:
+      keysends:
+        items:
+          $ref: '#/definitions/v2controllers.KeySendRequestBody'
+        type: array
+    type: object
+  v2controllers.MultiKeySendResponseBody:
+    properties:
+      keysends:
+        items:
+          $ref: '#/definitions/v2controllers.KeySendResult'
+        type: array
+    type: object
   v2controllers.PayInvoiceRequestBody:
     properties:
       amount:
@@ -418,6 +441,38 @@ paths:
       summary: Make a keysend payment
       tags:
       - Payment
+  /v2/payments/keysend/multi:
+    post:
+      consumes:
+      - application/json
+      description: Pay multiple nodes without an invoice using their public key
+      parameters:
+      - description: Invoice to pay
+        in: body
+        name: MultiKeySendRequestBody
+        required: true
+        schema:
+          $ref: '#/definitions/v2controllers.MultiKeySendRequestBody'
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            $ref: '#/definitions/v2controllers.MultiKeySendResponseBody'
+        "400":
+          description: Bad Request
+          schema:
+            $ref: '#/definitions/responses.ErrorResponse'
+        "500":
+          description: Internal Server Error
+          schema:
+            $ref: '#/definitions/responses.ErrorResponse'
+      security:
+      - OAuth2Password: []
+      summary: Make multiple keysend payments
+      tags:
+      - Payment
   /v2/users:
     post:
       consumes:
@@ -447,9 +502,6 @@ paths:
       summary: Create an account
       tags:
       - Account
-schemes:
-- https
-- http
 securityDefinitions:
   OAuth2Password:
     flow: password

v2_endpoints.go

@@ -13,11 +13,13 @@ func RegisterV2Endpoints(svc *service.LndhubService, e *echo.Echo, secured *echo
 		e.POST("/v2/users", v2controllers.NewCreateUserController(svc).CreateUser, strictRateLimitMiddleware, adminMw)
 	}
 	invoiceCtrl := v2controllers.NewInvoiceController(svc)
+	keysendCtrl := v2controllers.NewKeySendController(svc)
 	secured.POST("/v2/invoices", invoiceCtrl.AddInvoice)
 	secured.GET("/v2/invoices/incoming", invoiceCtrl.GetIncomingInvoices)
 	secured.GET("/v2/invoices/outgoing", invoiceCtrl.GetOutgoingInvoices)
 	secured.GET("/v2/invoices/:payment_hash", invoiceCtrl.GetInvoice)
 	securedWithStrictRateLimit.POST("/v2/payments/bolt11", v2controllers.NewPayInvoiceController(svc).PayInvoice)
-	securedWithStrictRateLimit.POST("/v2/payments/keysend", v2controllers.NewKeySendController(svc).KeySend)
+	securedWithStrictRateLimit.POST("/v2/payments/keysend", keysendCtrl.KeySend)
+	securedWithStrictRateLimit.POST("/v2/payments/keysend/multi", keysendCtrl.MultiKeySend)
 	secured.GET("/v2/balance", v2controllers.NewBalanceController(svc).Balance)
 }