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// SPDX-License-Identifier: GPL-3.0-or-later
package nginxvts
import (
"encoding/json"
"fmt"
"io"
"net/http"
"github.com/netdata/netdata/go/go.d.plugin/pkg/stm"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
func (vts *NginxVTS) collect() (map[string]int64, error) {
ms, err := vts.scapeVTS()
if err != nil {
return nil, nil
}
collected := make(map[string]interface{})
vts.collectMain(collected, ms)
vts.collectSharedZones(collected, ms)
vts.collectServerZones(collected, ms)
return stm.ToMap(collected), nil
}
func (vts *NginxVTS) collectMain(collected map[string]interface{}, ms *vtsMetrics) {
collected["uptime"] = (ms.NowMsec - ms.LoadMsec) / 1000
collected["connections"] = ms.Connections
}
func (vts *NginxVTS) collectSharedZones(collected map[string]interface{}, ms *vtsMetrics) {
collected["sharedzones"] = ms.SharedZones
}
func (vts *NginxVTS) collectServerZones(collected map[string]interface{}, ms *vtsMetrics) {
if !ms.hasServerZones() {
return
}
// "*" means all servers
collected["total"] = ms.ServerZones["*"]
}
func (vts *NginxVTS) scapeVTS() (*vtsMetrics, error) {
req, _ := web.NewHTTPRequest(vts.Request)
var total vtsMetrics
if err := vts.doOKDecode(req, &total); err != nil {
vts.Warning(err)
return nil, err
}
return &total, nil
}
func (vts *NginxVTS) doOKDecode(req *http.Request, in interface{}) error {
resp, err := vts.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()
}
}
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