w3_engine_errors.go

package w3

import (
	"net/http"

	"codeberg.org/bbfh/w3/w3errs"
	"codeberg.org/bbfh/w3/w3logs"
)

// Function responsible for rendering the error to clients
type ErrorHandler func(ctx *Context, err w3errs.Error)

func (engine *Engine) wrapErrorHandler(err_getter func(*Context) w3errs.Error) http.Handler {
	return http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
		object_index, ctx := engine.pool.AcquireObject()
		defer engine.pool.Release(object_index)

		ctx.reset()
		ctx.Writer.wrapped = writer
		ctx.Writer.responseCode = 0
		ctx.Request = request

		engine.ErrorHandler(ctx, err_getter(ctx))
	})
}

func defaultErrorHandler(ctx *Context, err w3errs.Error) {
	if err.StatusCode >= 500 {
		w3logs.LogError(
			"%s %q → %s",
			ctx.Request.Method,
			ctx.Request.URL,
			err.InternalText,
		)
	}
	ctx.SendText(err.StatusCode, err.PublicText)
}