use throttle from config

pkg/sources/birdwatcher/config.go

@@ -20,4 +20,6 @@ type Config struct {
 	AltPipeProtocolPrefix   string `ini:"alt_pipe_protocol_prefix"`
 	AltPipeProtocolSuffix   string `ini:"alt_pipe_protocol_suffix"`
 	NeighborsRefreshTimeout int    `ini:"neighbors_refresh_timeout"`
+
+	StreamParserThrottle int
 }

pkg/sources/birdwatcher/stream_decoder.go

@@ -16,6 +16,8 @@ func parseRoutesResponseStream(
 	meta := &api.Meta{}
 	routes := api.Routes{}
 
+	throttle := time.Duration(config.StreamParserThrottle) * time.Nanosecond
+
 	for {
 		t, err := dec.Token()
 		if err == io.EOF {
@@ -68,7 +70,7 @@ func parseRoutesResponseStream(
 				}
 
 				// Wait a bit, so our CPUs do not go up in flames.
-				time.Sleep(30000 * time.Nanosecond)
+				time.Sleep(throttle)
 
 				route := parseRouteData(rdata, config, false)
 				routes = append(routes, route)