func init() {
config.RegisterFunc(&logConfig, func() {
if logConfig.LogDebug {
Std.SetLevel(LDebug)
} else {
// Check if we should send errors to the admin email
admin := mail.AdminEmail()
from := mail.DefaultFrom()
server := mail.DefaultServer()
if admin != "" && server != "" {
writer := NewSmtpWriter(LError, server, from, admin)
Std.AddWriter(writer)
}
}
})
}
func (app *App) logError(ctx *Context, err interface{}) {
skip, stackSkip, _, _ := runtimeutil.GetPanic()
var buf bytes.Buffer
if ctx.R != nil {
buf.WriteString("Panic serving ")
buf.WriteString(ctx.R.Method)
buf.WriteByte(' ')
buf.WriteString(ctx.R.Host)
buf.WriteString(ctx.R.URL.Path)
if rq := ctx.R.URL.RawQuery; rq != "" {
buf.WriteByte('?')
buf.WriteString(rq)
}
if rf := ctx.R.URL.Fragment; rf != "" {
buf.WriteByte('#')
buf.WriteString(rf)
}
buf.WriteByte(' ')
buf.WriteString(ctx.RemoteAddress())
} else {
buf.WriteString("Panic")
}
elapsed := ctx.Elapsed()
fmt.Fprintf(&buf, " (after %s): %v\n", elapsed, err)
stack := runtimeutil.FormatStack(stackSkip)
location, code := runtimeutil.FormatCaller(skip, 5, true, true)
if location != "" {
buf.WriteString("\n At ")
buf.WriteString(location)
if code != "" {
buf.WriteByte('\n')
buf.WriteString(code)
buf.WriteByte('\n')
}
}
if stack != "" {
buf.WriteString("\nStack:\n")
buf.WriteString(stack)
}
req := ""
if ctx.R != nil {
dump, derr := httputil.DumpRequest(ctx.R, true)
if derr == nil {
// This cleans up empty lines and replaces \r\n with \n
req = stringutil.Lines(string(dump), 0, 10000, true)
buf.WriteString("\nRequest:\n")
buf.WriteString(req)
}
// Check if there are any attached files that we might
// want to send in an email
if !app.cfg.Debug && mail.AdminEmail() != "" {
ctx.R.ParseMultipartForm(32 << 20) // 32 MiB, as stdlib
if form := ctx.R.MultipartForm; form != nil {
var count int
var attachments []*mail.Attachment
var message bytes.Buffer
if len(form.File) > 0 {
for k, v := range form.File {
for _, file := range v {
f, err := file.Open()
if err != nil {
fmt.Fprintf(&message, "%s => error %s", k, err)
continue
}
attachment, err := mail.NewAttachment(file.Filename, f)
attachment.ContentType = file.Header.Get("Content-Type")
f.Close()
if err != nil {
fmt.Fprintf(&message, "%s => error %s", k, err)
continue
}
count++
fmt.Fprintf(&message, "%s => %s (%s)", k, attachment.Name, attachment.ContentType)
attachments = append(attachments, attachment)
}
}
fmt.Fprintf(&message, "\nError:\n%s", buf.String())
host, _ := os.Hostname()
from := mail.DefaultFrom()
if from == "" {
from = fmt.Sprintf("errors@%s", host)
}
msg := &mail.Message{
From: from,
To: mail.Admin,
Subject: fmt.Sprintf("Panic with %d attached files on %s", count, host),
TextBody: message.String(),
Attachments: attachments,
}
ctx.SendMail("", nil, msg)
}
}
}
}
ctx.Logger().Error(buf.String())
if app.cfg.Debug {
app.errorPage(ctx, elapsed, skip, stackSkip, req, err)
} else {
app.handleHTTPError(ctx, "Internal Server Error", http.StatusInternalServerError)
}
}