package apache import ( "bufio" "fmt" "net" "net/http" "net/url" "strconv" "strings" "sync" "time" "github.com/influxdb/telegraf/plugins" ) type Apache struct { Urls []string } var sampleConfig = ` # An array of Apache status URI to gather stats. urls = ["http://localhost/server-status?auto"] ` func (n *Apache) SampleConfig() string { return sampleConfig } func (n *Apache) Description() string { return "Read Apache status information (mod_status)" } func (n *Apache) Gather(acc plugins.Accumulator) error { var wg sync.WaitGroup var outerr error for _, u := range n.Urls { addr, err := url.Parse(u) if err != nil { return fmt.Errorf("Unable to parse address '%s': %s", u, err) } wg.Add(1) go func(addr *url.URL) { defer wg.Done() outerr = n.gatherUrl(addr, acc) }(addr) } wg.Wait() return outerr } var tr = &http.Transport{ ResponseHeaderTimeout: time.Duration(3 * time.Second), } var client = &http.Client{Transport: tr} func (n *Apache) gatherUrl(addr *url.URL, acc plugins.Accumulator) error { resp, err := client.Get(addr.String()) if err != nil { return fmt.Errorf("error making HTTP request to %s: %s", addr.String(), err) } defer resp.Body.Close() if resp.StatusCode != http.StatusOK { return fmt.Errorf("%s returned HTTP status %s", addr.String(), resp.Status) } tags := getTags(addr) sc := bufio.NewScanner(resp.Body) fields := make(map[string]interface{}) for sc.Scan() { line := sc.Text() if strings.Contains(line, ":") { parts := strings.SplitN(line, ":", 2) key, part := strings.Replace(parts[0], " ", "", -1), strings.TrimSpace(parts[1]) switch key { case "Scoreboard": for field, value := range n.gatherScores(part) { fields[field] = value } default: value, err := strconv.ParseFloat(part, 64) if err != nil { continue } fields[key] = value } } } acc.AddFields("apache", fields, tags) return nil } func (n *Apache) gatherScores(data string) map[string]interface{} { var waiting, open int = 0, 0 var S, R, W, K, D, C, L, G, I int = 0, 0, 0, 0, 0, 0, 0, 0, 0 for _, s := range strings.Split(data, "") { switch s { case "_": waiting++ case "S": S++ case "R": R++ case "W": W++ case "K": K++ case "D": D++ case "C": C++ case "L": L++ case "G": G++ case "I": I++ case ".": open++ } } fields := map[string]interface{}{ "scboard_waiting": float64(waiting), "scboard_starting": float64(S), "scboard_reading": float64(R), "scboard_sending": float64(W), "scboard_keepalive": float64(K), "scboard_dnslookup": float64(D), "scboard_closing": float64(C), "scboard_logging": float64(L), "scboard_finishing": float64(G), "scboard_idle_cleanup": float64(I), "scboard_open": float64(open), } return fields } // Get tag(s) for the apache plugin func getTags(addr *url.URL) map[string]string { h := addr.Host host, port, err := net.SplitHostPort(h) if err != nil { host = addr.Host if addr.Scheme == "http" { port = "80" } else if addr.Scheme == "https" { port = "443" } else { port = "" } } return map[string]string{"server": host, "port": port} } func init() { plugins.Add("apache", func() plugins.Plugin { return &Apache{} }) }