1 files changed, 44 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/haproxy/init.go b/src/go/collectors/go.d.plugin/modules/haproxy/init.go
new file mode 100644
index 000000000..2163b9624
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/haproxy/init.go
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package haproxy
+
+import (
+	"errors"
+
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus/selector"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
+)
+
+func (h Haproxy) validateConfig() error {
+	if h.URL == "" {
+		return errors.New("'url' is not set")
+	}
+	if _, err := web.NewHTTPRequest(h.Request); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (h Haproxy) initPrometheusClient() (prometheus.Prometheus, error) {
+	httpClient, err := web.NewHTTPClient(h.Client)
+	if err != nil {
+		return nil, err
+	}
+
+	prom := prometheus.NewWithSelector(httpClient, h.Request, sr)
+	return prom, nil
+}
+
+var sr, _ = selector.Expr{
+	Allow: []string{
+		metricBackendHTTPResponsesTotal,
+		metricBackendCurrentQueue,
+		metricBackendQueueTimeAverageSeconds,
+		metricBackendBytesInTotal,
+		metricBackendResponseTimeAverageSeconds,
+		metricBackendSessionsTotal,
+		metricBackendCurrentSessions,
+		metricBackendBytesOutTotal,
+	},
+}.Parse()