func writeHistogramForDuration(expvarMap *expvar.Map, duration time.Duration, prefix string) {
if base.LogEnabled("PerfStats") {
var durationMs int
if duration < 1*time.Second {
durationMs = int(duration/(100*time.Millisecond)) * 100
} else {
durationMs = int(duration/(1000*time.Millisecond)) * 1000
}
expvarMap.Add(fmt.Sprintf("%s-%06dms", prefix, durationMs), 1)
}
}
func (h *handler) logRequestLine() {
if !base.LogEnabled("HTTP") {
return
}
as := ""
if h.privs == adminPrivs {
as = " (ADMIN)"
} else if h.user != nil && h.user.Name() != "" {
as = fmt.Sprintf(" (as %s)", h.user.Name())
}
base.LogTo("HTTP", " #%03d: %s %s%s", h.serialNumber, h.rq.Method, h.rq.URL, as)
}
func (h *handler) logRequestLine() {
if !base.LogEnabled("HTTP") {
return
}
as := ""
if h.privs == adminPrivs {
as = " (ADMIN)"
} else if h.user != nil && h.user.Name() != "" {
as = fmt.Sprintf(" (as %s)", h.user.Name())
}
proto := ""
if h.rq.ProtoMajor >= 2 {
proto = " HTTP/2"
}
base.LogTo("HTTP", " #%03d: %s %s%s%s", h.serialNumber, h.rq.Method, sanitizeRequestURL(h.rq.URL), proto, as)
}
// Performs an HTTP POST to the url defined for the handler. If a filter function is defined,
// calls it to determine whether to POST. The payload for the POST is depends
// on the event type.
func (wh *Webhook) HandleEvent(event Event) {
var payload *bytes.Buffer
var contentType string
if wh.filter != nil {
// If filter function is defined, use it to determine whether to post
success, err := wh.filter.CallValidateFunction(event)
if err != nil {
base.Warn("Error calling webhook filter function: %v", err)
}
// If filter returns false, cancel webhook post
if !success {
return
}
}
// Different events post different content by default
switch event := event.(type) {
case *DocumentChangeEvent:
// for DocumentChangeEvent, post document body
jsonOut, err := json.Marshal(event.Doc)
if err != nil {
base.Warn("Error marshalling doc for webhook post")
return
}
contentType = "application/json"
payload = bytes.NewBuffer(jsonOut)
case *DBStateChangeEvent:
// for DBStateChangeEvent, post JSON document with the following format
//{
// “admininterface":"127.0.0.1:4985",
// “dbname":"db",
// “localtime":"2015-10-07T11:20:29.138+01:00",
// "reason":"DB started from config”,
// “state”:"online"
//}
jsonOut, err := json.Marshal(event.Doc)
if err != nil {
base.Warn("Error marshalling doc for webhook post")
return
}
contentType = "application/json"
payload = bytes.NewBuffer(jsonOut)
default:
base.Warn("Webhook invoked for unsupported event type.")
return
}
func() {
resp, err := wh.client.Post(wh.url, contentType, payload)
defer func() {
// Ensure we're closing the response, so it can be reused
if resp != nil && resp.Body != nil {
io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
}
}()
if err != nil {
base.Warn("Error attempting to post %s to url %s: %s -- %+v", event.String(), wh.SanitizedUrl(), err)
return
}
if base.LogEnabled("Events+") {
base.LogTo("Events+", "Webhook handler ran for event. Payload %s posted to URL %s, got status %s",
payload, wh.SanitizedUrl(), resp.Status)
}
}()
}
