Merge branch 'design' into main

1 files changed, 19 insertions, 0 deletions

diff --git a/pkg/instance/metric.go b/pkg/instance/metric.go
new file mode 100644
index 0000000..db11bd2
--- /dev/null
+++ b/pkg/instance/metric.go
@@ -0,0 +1,19 @@
+package stfe
+
+import (
+	"github.com/google/trillian/monitoring"
+	"github.com/google/trillian/monitoring/prometheus"
+)
+
+var (
+	reqcnt  monitoring.Counter   // number of incoming http requests
+	rspcnt  monitoring.Counter   // number of valid http responses
+	latency monitoring.Histogram // request-response latency
+)
+
+func init() {
+	mf := prometheus.MetricFactory{}
+	reqcnt = mf.NewCounter("http_req", "number of http requests", "logid", "endpoint")
+	rspcnt = mf.NewCounter("http_rsp", "number of http requests", "logid", "endpoint", "status")
+	latency = mf.NewHistogram("http_latency", "http request-response latency", "logid", "endpoint", "status")
+}