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package xlog
// A sink which dispatches to zero or more other sinks.
type MultiSink struct {
sinks []Sink
}
// Add a sink to the MultiSink. Idempotent.
func (ms *MultiSink) Add(sink Sink) {
for _, s := range ms.sinks {
if s == sink {
return
}
}
ms.sinks = append(ms.sinks, sink)
}
// Remove a sink from the MultiSink. Idempotent.
func (ms *MultiSink) Remove(sink Sink) {
var newSinks []Sink
for _, s := range ms.sinks {
if s != sink {
newSinks = append(newSinks, s)
}
}
ms.sinks = newSinks
}
// (Implements Sink.)
func (ms *MultiSink) ReceiveLocally(sev Severity, format string, params ...interface{}) {
for _, s := range ms.sinks {
s.ReceiveLocally(sev, format, params...)
}
}
// (Implements Sink.)
func (ms *MultiSink) ReceiveFromChild(sev Severity, format string, params ...interface{}) {
for _, s := range ms.sinks {
s.ReceiveFromChild(sev, format, params...)
}
}
// The null sink. All log messages to this sink will be discarded.
var NullSink Sink
func init() {
NullSink = &MultiSink{}
}
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