Initial cloud-services repo - gateway service + pkg modules

pkg/utils/json_rpc_resp.go

@@ -0,0 +1,55 @@
+package utils
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+
+	"fiskerinc.com/modules/common"
+)
+
+const ErrCodeJSONRPCParse = -32700
+const ErrCodeJSONRPCInvalidRequest = -32600
+const ErrCodeJSONRPCMethodNotFound = -32601
+const ErrCodeJSONRPCInvalidParams = -32602
+const ErrCodeJSONRPCInternalError = -32603
+const ErrCodeJSONRPCServerError = -32000
+
+var ErrJSONRPCParse = errors.New("Parse error")
+var ErrJSONRPCInvalidRequest = errors.New("Invalid Request")
+var ErrJSONRPCMethodNotFound = errors.New("Method not found")
+var ErrJSONRPCInvalidParams = errors.New("Invalid params")
+var ErrJSONRPCInternalError = errors.New("Internal error")
+var ErrJSONRPCServerError = errors.New("Server error")
+
+var ErrCodeJSONRPC map[error]int = map[error]int{
+	ErrJSONRPCParse:          ErrCodeJSONRPCParse,
+	ErrJSONRPCInvalidRequest: ErrCodeJSONRPCInvalidRequest,
+	ErrJSONRPCMethodNotFound: ErrCodeJSONRPCMethodNotFound,
+	ErrJSONRPCInvalidParams:  ErrCodeJSONRPCInvalidParams,
+	ErrJSONRPCInternalError:  ErrCodeJSONRPCInternalError,
+	ErrJSONRPCServerError:    ErrCodeJSONRPCServerError,
+}
+
+var StatsCodeJSONRPC map[error]int = map[error]int{
+	ErrJSONRPCParse:          http.StatusBadRequest,
+	ErrJSONRPCInvalidRequest: http.StatusBadRequest,
+	ErrJSONRPCMethodNotFound: http.StatusNotFound,
+	ErrJSONRPCInvalidParams:  http.StatusBadRequest,
+	ErrJSONRPCInternalError:  http.StatusInternalServerError,
+	ErrJSONRPCServerError:    http.StatusServiceUnavailable,
+}
+
+func RespJSONRPCError(w http.ResponseWriter, err error, msg string) {
+	code, ok := ErrCodeJSONRPC[err]
+	if !ok {
+		code = ErrCodeJSONRPCInternalError
+	}
+	resp := common.NewJSONRPCErrorResponse(code, fmt.Sprintf("%v. %s", err.Error(), msg))
+	status, ok := StatsCodeJSONRPC[err]
+	if !ok {
+		status = http.StatusInternalServerError
+	}
+
+	RespJSON(w, status, resp)
+}