feat: add configurable request timeout (#46)

README.md

@@ -74,6 +74,7 @@ GLOBAL OPTIONS:
    --port value                 Port on which to expose the Prometheus metrics. (default: "9202") [$OMADA_PORT]
    --site value                 Omada site to scrape metrics from. (default: "Default") [$OMADA_SITE]
    --interval value             Interval between scrapes, in seconds. (default: 5) [$OMADA_SCRAPE_INTERVAL]
+   --timeout value              Timeout when making requests to the Omada Controller. (default: 15) [$OMADA_REQUEST_TIMEOUT]
    --insecure                   Whether to skip verifying the SSL certificate on the controller. (default: false) [$OMADA_INSECURE]
    --disable-go-collector       Disable Go collector metrics. (default: true) [$OMADA_DISABLE_GO_COLLECTOR]
    --disable-process-collector  Disable process collector metrics. (default: true) [$OMADA_DISABLE_PROCESS_COLLECTOR]
@@ -93,6 +94,7 @@ OMADA_SITE               | Site you'd like to get metrics from. (default: "Defau
 OMADA_PORT               | Port on which to expose the Prometheus metrics. (default: 9202)
 OMADA_INSECURE           | Whether to skip verifying the SSL certificate on the controller. (default: false)
 OMADA_SCRAPE_INTERVAL    | Interval between scrapes, in seconds. (default: 5)
+OMADA_REQUEST_TIMEOUT    | Timeout when making requests to the Omada Controller. (default: 15)
 OMADA_DISABLE_GO_COLLECTOR | Disable Go collector metrics. (default: true)
 OMADA_DISABLE_PROCESS_COLLECTOR | Disable process collector metrics. (default: true)
 

cmd/exporter.go

@@ -23,6 +23,7 @@ var (
 	port                     string
 	site                     string
 	interval                 int
+	timeout                  int
 	insecure                 bool
 	goCollectorDisabled      bool
 	processCollectorDisabled bool
@@ -44,6 +45,7 @@ func Run() {
 		&cli.StringFlag{Destination: &port, Name: "port", Value: "9202", Usage: "Port on which to expose the Prometheus metrics.", EnvVars: []string{"OMADA_PORT"}},
 		&cli.StringFlag{Destination: &site, Name: "site", Value: "Default", Usage: "Omada site to scrape metrics from.", EnvVars: []string{"OMADA_SITE"}},
 		&cli.IntFlag{Destination: &interval, Name: "interval", Value: 5, Usage: "Interval between scrapes, in seconds.", EnvVars: []string{"OMADA_SCRAPE_INTERVAL"}},
+		&cli.IntFlag{Destination: &timeout, Name: "timeout", Value: 15, Usage: "Timeout when making requests to the Omada Controller.", EnvVars: []string{"OMADA_REQUEST_TIMEOUT"}},
 		&cli.BoolFlag{Destination: &insecure, Name: "insecure", Value: false, Usage: "Whether to skip verifying the SSL certificate on the controller.", EnvVars: []string{"OMADA_INSECURE"}},
 		&cli.BoolFlag{Destination: &goCollectorDisabled, Name: "disable-go-collector", Value: true, Usage: "Disable Go collector metrics.", EnvVars: []string{"OMADA_DISABLE_GO_COLLECTOR"}},
 		&cli.BoolFlag{Destination: &processCollectorDisabled, Name: "disable-process-collector", Value: true, Usage: "Disable process collector metrics.", EnvVars: []string{"OMADA_DISABLE_PROCESS_COLLECTOR"}},

pkg/api/api.go

@@ -18,7 +18,7 @@ type Client struct {
 	SiteId     string
 }
 
-func setuphttpClient(insecure bool) (*http.Client, error) {
+func setuphttpClient(insecure bool, timeout int) (*http.Client, error) {
 	jar, err := cookiejar.New(nil)
 	if err != nil {
 		return nil, fmt.Errorf("failed to init cookiejar")
@@ -28,7 +28,7 @@ func setuphttpClient(insecure bool) (*http.Client, error) {
 	t.MaxConnsPerHost = 100
 	t.MaxIdleConnsPerHost = 100
 
-	client := &http.Client{Transport: t, Timeout: time.Duration(10) * time.Second, Jar: jar}
+	client := &http.Client{Transport: t, Timeout: time.Duration(timeout) * time.Second, Jar: jar}
 
 	if insecure {
 		t.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
@@ -38,7 +38,7 @@ func setuphttpClient(insecure bool) (*http.Client, error) {
 }
 
 func Configure(c *cli.Context) (*Client, error) {
-	httpClient, err := setuphttpClient(c.Bool("insecure"))
+	httpClient, err := setuphttpClient(c.Bool("insecure"), c.Int("timeout"))
 	if err != nil {
 		return nil, err
 	}