Uses prometheus counter gen creating egress connector for syslog

src/autoscaler/metricsforwarder/forwarder/syslog_emitter.go

@@ -12,20 +12,14 @@ import (
 	"code.cloudfoundry.org/lager/v3"
 	"code.cloudfoundry.org/loggregator-agent-release/src/pkg/egress"
 	"code.cloudfoundry.org/loggregator-agent-release/src/pkg/egress/syslog"
+	"github.com/prometheus/client_golang/prometheus"
 )
 
 type SyslogEmitter struct {
 	logger lager.Logger
 	Writer egress.WriteCloser
 }
 
-type Counter struct{}
-
-func (c *Counter) Add(delta float64) {
-}
-func (c *Counter) Set(delta float64) {
-}
-
 func NewSyslogEmitter(logger lager.Logger, conf *config.Config) (MetricForwarder, error) {
 	var writer egress.WriteCloser
 	var protocol string
@@ -54,20 +48,27 @@ func NewSyslogEmitter(logger lager.Logger, conf *config.Config) (MetricForwarder
 		Hostname: hostname,
 	}
 
+	syslogEgressCounter := prometheus.NewCounter(prometheus.CounterOpts{
+		Namespace: "autoscaler",
+		Subsystem: "metricsforwarder",
+		Name:      "syslog_metrics_egress_counter",
+		Help:      "count of metrics sent to syslog",
+	})
+
 	switch binding.URL.Scheme {
 	case "syslog":
 		writer = syslog.NewTCPWriter(
 			binding,
 			netConf,
-			&Counter{},
+			syslogEgressCounter,
 			syslog.NewConverter(),
 		)
 	case "syslog-tls":
 		writer = syslog.NewTLSWriter(
 			binding,
 			netConf,
 			tlsConfig,
-			&Counter{},
+			syslogEgressCounter,
 			syslog.NewConverter(),
 		)
 	}