From 8ec51bbede59e1fa6ac24de3607f6e7bb3e3a654 Mon Sep 17 00:00:00 2001 From: Dave Henderson Date: Thu, 17 Sep 2020 14:01:20 -0400 Subject: metrics: Initial integration of Prometheus metrics (#3709) Signed-off-by: Dave Henderson --- metrics.go | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 metrics.go (limited to 'metrics.go') diff --git a/metrics.go b/metrics.go new file mode 100644 index 0000000..a7ff3b7 --- /dev/null +++ b/metrics.go @@ -0,0 +1,32 @@ +package caddy + +import ( + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promauto" +) + +// define and register the metrics used in this package. +func init() { + prometheus.MustRegister(prometheus.NewBuildInfoCollector()) + + const ns, sub = "caddy", "admin" + + adminMetrics.requestCount = promauto.NewCounterVec(prometheus.CounterOpts{ + Namespace: ns, + Subsystem: sub, + Name: "http_requests_total", + Help: "Counter of requests made to the Admin API's HTTP endpoints.", + }, []string{"handler", "path", "code", "method"}) + adminMetrics.requestErrors = promauto.NewCounterVec(prometheus.CounterOpts{ + Namespace: ns, + Subsystem: sub, + Name: "http_request_errors_total", + Help: "Number of requests resulting in middleware errors.", + }, []string{"handler", "path", "method"}) +} + +// adminMetrics is a collection of metrics that can be tracked for the admin API. +var adminMetrics = struct { + requestCount *prometheus.CounterVec + requestErrors *prometheus.CounterVec +}{} -- cgit v1.2.3