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utils.go
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/
utils.go
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package app
import (
"encoding/xml"
"strconv"
"time"
"github.com/labstack/echo/v4"
"github.com/dashotv/fae"
)
// QueryString retrieves a string param from the gin request querystring
func QueryString(c echo.Context, name string) string {
return c.QueryParam(name)
}
func QueryDefaultString(c echo.Context, name, def string) string {
v := c.QueryParam(name)
if v == "" {
return def
}
return v
}
// QueryInt retrieves an integer param from the gin request querystring
func QueryInt(c echo.Context, name string) int {
v := c.QueryParam(name)
i, _ := strconv.Atoi(v)
return i
}
// QueryDefaultInt retrieves an integer param from the gin request querystring
// defaults to def argument if not found
func QueryDefaultInteger(c echo.Context, name string, def int) (int, error) {
v := c.QueryParam(name)
if v == "" {
return def, nil
}
n, err := strconv.Atoi(v)
if err != nil {
return def, err
}
if n < 0 {
return def, fae.Errorf("less than zero")
}
return n, nil
}
// QueryBool retrieves a boolean param from the gin request querystring
func QueryBool(c echo.Context, name string) bool {
return c.QueryParam(name) == "true"
}
// QueryParamString retrieves a string param from the gin request querystring
func QueryParamString(c echo.Context, name string) string {
return c.QueryParam(name)
}
// QueryParamInt retrieves an integer param from the gin request querystring
func QueryParamInt(c echo.Context, name string) int {
v := c.QueryParam(name)
i, _ := strconv.Atoi(v)
return i
}
// QueryParamBool retrieves a boolean param from the gin request querystring
func QueryParamBool(c echo.Context, name string) bool {
return c.QueryParam(name) == "true"
}
func QueryParamIntDefault(c echo.Context, name string, def string) int {
param := c.QueryParam(name)
result, err := strconv.Atoi(param)
if err == nil && result > 0 {
return result
}
d, err := strconv.Atoi(def)
if err == nil && d > 0 {
return d
}
return 0
}
func QueryParamFloatDefault(c echo.Context, name string, def string) float64 {
param := c.QueryParam(name)
result, err := strconv.ParseFloat(param, 64)
if err == nil && result > 0 {
return result
}
if def != "" {
d, err := strconv.ParseFloat(param, 64)
if err == nil && d > 0 {
return d
}
}
return 0
}
func QueryParamBoolDefault(c echo.Context, name string, def string) bool {
param := c.QueryParam(name)
if param != "" {
return param == "true"
}
if def != "" {
return def == "true"
}
return false
}
func QueryParamStringDefault(c echo.Context, name string, def string) string {
param := c.QueryParam(name)
if param != "" {
return param
}
return def
}
// stolen from gin gonic
// H is a shortcut for map[string]any
type H map[string]any
// MarshalXML allows type H to be used with xml.Marshal.
func (h H) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
start.Name = xml.Name{
Space: "",
Local: "map",
}
if err := e.EncodeToken(start); err != nil {
return err
}
for key, value := range h {
elem := xml.StartElement{
Name: xml.Name{Space: "", Local: key},
Attr: []xml.Attr{},
}
if err := e.EncodeElement(value, elem); err != nil {
return err
}
}
return e.EncodeToken(xml.EndElement{Name: start.Name})
}
// WithTimeout runs a delegate function with a timeout,
//
// Example: Wait for a channel
//
// if value, ok := WithTimeout(func()interface{}{return <- inbox}, time.Second); ok {
// // returned
// } else {
// // didn't return
// }
//
// Example: To send to a channel
//
// _, ok := WithTimeout(func()interface{}{outbox <- myValue; return nil}, time.Second)
// if !ok {
// // didn't send
// }
func WithTimeout(delegate func() interface{}, timeout time.Duration) (ret interface{}, ok bool) {
ch := make(chan interface{}, 1) // buffered
go func() { ch <- delegate() }()
select {
case ret = <-ch:
return ret, true
case <-time.After(timeout):
}
return nil, false
}
func TickTock(tag string) func() {
start := time.Now()
return func() {
app.Log.Debugf("%s: duration %v\n", tag, time.Since(start))
}
}