/
common.go
65 lines (52 loc) · 1.27 KB
/
common.go
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package api
import (
"github.com/labstack/echo"
v "gopkg.in/go-playground/validator.v9"
"reflect"
)
var validate = v.New()
func bindAndValidParams(c echo.Context, params Param) (err error) {
cc := c.(*HydroApiContext)
params.SetAddress(cc.Address)
if err := c.Bind(params); err != nil {
panic(BindError())
}
bindUrlParam(c, params)
return validate.Struct(params)
}
func bindUrlParam(c echo.Context, ptr interface{}) {
typ := reflect.TypeOf(ptr).Elem()
val := reflect.ValueOf(ptr).Elem()
for i := 0; i < typ.NumField(); i++ {
typeField := typ.Field(i)
structField := val.Field(i)
if !structField.CanSet() {
continue
}
inputFieldName := typeField.Tag.Get("param")
if inputFieldName == "" {
continue
}
structField.SetString(c.Param(inputFieldName))
continue
}
}
func commonHandler(params Param, fn func(Param) (interface{}, error)) echo.HandlerFunc {
return func(c echo.Context) (err error) {
var req Param
if params != nil {
// Params is shared among all request
// We create a new one for each request
req = reflect.New(reflect.TypeOf(params).Elem()).Interface().(Param)
err = bindAndValidParams(c, req)
}
if err != nil {
return
}
resp, err := fn(req)
if err != nil {
return
}
return commonResponse(c, resp)
}
}