1 files changed, 107 insertions, 0 deletions
diff --git a/src/go/plugin/go.d/modules/icecast/collect.go b/src/go/plugin/go.d/modules/icecast/collect.go
new file mode 100644
index 000000000..102ad31e5
--- /dev/null
+++ b/src/go/plugin/go.d/modules/icecast/collect.go
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package icecast
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/web"
+)
+
+const (
+	urlPathServerStats = "/status-json.xsl" // https://icecast.org/docs/icecast-trunk/server_stats/
+)
+
+func (ic *Icecast) collect() (map[string]int64, error) {
+	mx := make(map[string]int64)
+
+	if err := ic.collectServerStats(mx); err != nil {
+		return nil, err
+	}
+
+	return mx, nil
+}
+
+func (ic *Icecast) collectServerStats(mx map[string]int64) error {
+	stats, err := ic.queryServerStats()
+	if err != nil {
+		return err
+	}
+	if stats.IceStats == nil {
+		return fmt.Errorf("unexpected response: no icestats found")
+	}
+	if len(stats.IceStats.Source) == 0 {
+		return fmt.Errorf("no icecast sources found")
+	}
+
+	seen := make(map[string]bool)
+
+	for _, src := range stats.IceStats.Source {
+		name := src.ServerName
+		if name == "" {
+			continue
+		}
+
+		seen[name] = true
+
+		if !ic.seenSources[name] {
+			ic.seenSources[name] = true
+			ic.addSourceCharts(name)
+		}
+
+		px := fmt.Sprintf("source_%s_", name)
+
+		mx[px+"listeners"] = src.Listeners
+	}
+
+	for name := range ic.seenSources {
+		if !seen[name] {
+			delete(ic.seenSources, name)
+			ic.removeSourceCharts(name)
+		}
+	}
+
+	return nil
+}
+
+func (ic *Icecast) queryServerStats() (*serverStats, error) {
+	req, err := web.NewHTTPRequestWithPath(ic.Request, urlPathServerStats)
+	if err != nil {
+		return nil, err
+	}
+
+	var stats serverStats
+
+	if err := ic.doOKDecode(req, &stats); err != nil {
+		return nil, err
+	}
+
+	return &stats, nil
+}
+
+func (ic *Icecast) doOKDecode(req *http.Request, in interface{}) error {
+	resp, err := ic.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("error on HTTP request '%s': %v", req.URL, err)
+	}
+	defer closeBody(resp)
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("'%s' returned HTTP status code: %d", req.URL, resp.StatusCode)
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(in); err != nil {
+		return fmt.Errorf("error on decoding response from '%s': %v", req.URL, err)
+	}
+	return nil
+}
+
+func closeBody(resp *http.Response) {
+	if resp != nil && resp.Body != nil {
+		_, _ = io.Copy(io.Discard, resp.Body)
+		_ = resp.Body.Close()
+	}
+}