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// Package recover provides recovery for specific routes or for the whole app via middleware. See _examples/miscellaneous/recover
package recover
import (
"fmt"
"runtime"
"strconv"
"github.com/kataras/iris/v12/context"
)
func getRequestLogs(ctx context.Context) string {
var status, ip, method, path string
status = strconv.Itoa(ctx.GetStatusCode())
path = ctx.Path()
method = ctx.Method()
ip = ctx.RemoteAddr()
// the date should be logged by iris' Logger, so we skip them
return fmt.Sprintf("%v %s %s %s", status, path, method, ip)
}
// New returns a new recover middleware,
// it recovers from panics and logs
// the panic message to the application's logger "Warn" level.
func New() context.Handler {
return func(ctx context.Context) {
defer func() {
if err := recover(); err != nil {
if ctx.IsStopped() {
return
}
var stacktrace string
for i := 1; ; i++ {
_, f, l, got := runtime.Caller(i)
if !got {
break
}
stacktrace += fmt.Sprintf("%s:%d\n", f, l)
}
// when stack finishes
logMessage := fmt.Sprintf("Recovered from a route's Handler('%s')\n", ctx.HandlerName())
logMessage += fmt.Sprintf("At Request: %s\n", getRequestLogs(ctx))
logMessage += fmt.Sprintf("Trace: %s\n", err)
logMessage += fmt.Sprintf("\n%s", stacktrace)
ctx.Application().Logger().Warn(logMessage)
ctx.StatusCode(500)
ctx.StopExecution()
}
}()
ctx.Next()
}
}
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