Golang logger.Warningf函數代碼示例

// BuildEventsMetrics builds the metrics for the events
func BuildEventsMetrics(events *[]interface{}) *structs.StatusMetrics {
	metrics := structs.StatusMetrics{}

	metrics.Total = len(*events)

	for _, e := range *events {
		event := e.(map[string]interface{})

		check, ok := event["check"].(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert this check to an interface: %+v", event["check"])
			continue
		}

		status, ok := check["status"].(float64)
		if !ok {
			logger.Warningf("Could not assert this status to a flot64: %+v", check["status"])
			continue
		}

		if status == 2.0 {
			metrics.Critical++
			continue
		} else if status == 1.0 {
			metrics.Warning++
			continue
		}
		metrics.Unknown++
	}

	return &metrics
}

func initSensu(apis []SensuConfig) []SensuConfig {
	for i, api := range apis {
		// Set a datacenter name if missing
		if api.Name == "" {
			logger.Warningf("Sensu API %s has no name property, make sure to set it in your configuration. Generating a temporary one...", api.URL)
			apis[i].Name = fmt.Sprintf("sensu-%v", rand.Intn(100))
		}

		// Escape special characters in DC name
		r := strings.NewReplacer(":", "", "/", "", ";", "", "?", "")
		apis[i].Name = r.Replace(apis[i].Name)

		// Make sure the host is not empty
		if api.Host == "" {
			logger.Fatalf("Sensu API %q Host is missing", api.Name)
		}

		// Determine the protocol to use
		prot := "http"
		if api.Ssl {
			prot += "s"
		}

		// Set the API URL
		apis[i].URL = fmt.Sprintf("%s://%s:%d%s", prot, api.Host, api.Port, api.Path)
	}
	return apis
}

// BuildClientsMetrics builds the metrics for the events
func BuildClientsMetrics(clients *[]interface{}) *structs.StatusMetrics {
	metrics := structs.StatusMetrics{}

	metrics.Total = len(*clients)

	for _, c := range *clients {
		client := c.(map[string]interface{})

		status, ok := client["status"].(int)
		if !ok {
			logger.Warningf("Could not assert this status to an int: %+v", client["status"])
			continue
		}

		if status == 2.0 {
			metrics.Critical++
			continue
		} else if status == 1.0 {
			metrics.Warning++
			continue
		} else if status == 0.0 {
			continue
		}
		metrics.Unknown++
	}

	return &metrics
}

func (c *Config) initSensu() {
	for i, api := range c.Sensu {
		prot := "http"
		if api.Name == "" {
			logger.Warningf("Sensu API %s has no name property. Generating random one...", api.URL)
			c.Sensu[i].Name = fmt.Sprintf("sensu-%v", rand.Intn(100))
		}
		// escape special characters in DC name
		r := strings.NewReplacer(":", "", "/", "", ";", "", "?", "")
		c.Sensu[i].Name = r.Replace(api.Name)

		if api.Host == "" {
			logger.Fatalf("Sensu API %q Host is missing", api.Name)
		}
		if api.Timeout == 0 {
			c.Sensu[i].Timeout = 10
		} else if api.Timeout >= 1000 { // backward compatibility with < 0.3.0 version
			c.Sensu[i].Timeout = api.Timeout / 1000
		}
		if api.Port == 0 {
			c.Sensu[i].Port = 4567
		}
		if api.Ssl {
			prot += "s"
		}
		c.Sensu[i].URL = fmt.Sprintf("%s://%s:%d%s", prot, api.Host, c.Sensu[i].Port, api.Path)
	}
}

// WebServer starts the web server and serves GET & POST requests
func (u *Uchiwa) WebServer(publicPath *string, auth auth.Config) {
	// Private endpoints
	http.Handle("/aggregates", auth.Authenticate(http.HandlerFunc(u.aggregatesHandler)))
	http.Handle("/aggregates/", auth.Authenticate(http.HandlerFunc(u.aggregatesHandler)))
	http.Handle("/checks", auth.Authenticate(http.HandlerFunc(u.checksHandler)))
	http.Handle("/clients", auth.Authenticate(http.HandlerFunc(u.clientsHandler)))
	http.Handle("/clients/", auth.Authenticate(http.HandlerFunc(u.clientsHandler)))
	http.Handle("/config", auth.Authenticate(http.HandlerFunc(u.configHandler)))
	http.Handle("/datacenters", auth.Authenticate(http.HandlerFunc(u.datacentersHandler)))
	http.Handle("/events", auth.Authenticate(http.HandlerFunc(u.eventsHandler)))
	http.Handle("/events/", auth.Authenticate(http.HandlerFunc(u.eventsHandler)))
	http.Handle("/request", auth.Authenticate(http.HandlerFunc(u.requestHandler)))
	http.Handle("/results/", auth.Authenticate(http.HandlerFunc(u.resultsHandler)))
	http.Handle("/stashes", auth.Authenticate(http.HandlerFunc(u.stashesHandler)))
	http.Handle("/stashes/", auth.Authenticate(http.HandlerFunc(u.stashesHandler)))
	http.Handle("/subscriptions", auth.Authenticate(http.HandlerFunc(u.subscriptionsHandler)))
	if u.Config.Uchiwa.Enterprise == false {
		http.Handle("/metrics", auth.Authenticate(http.HandlerFunc(u.metricsHandler)))
	}

	// Static files
	http.Handle("/", http.FileServer(http.Dir(*publicPath)))

	// Public endpoints
	http.Handle("/config/", http.HandlerFunc(u.configHandler))
	http.Handle("/health", http.HandlerFunc(u.healthHandler))
	http.Handle("/health/", http.HandlerFunc(u.healthHandler))
	http.Handle("/login", auth.GetIdentification())

	listen := fmt.Sprintf("%s:%d", u.Config.Uchiwa.Host, u.Config.Uchiwa.Port)
	logger.Warningf("Uchiwa is now listening on %s", listen)
	logger.Fatal(http.ListenAndServe(listen, nil))
}

func setDc(v interface{}, dc string) {
	m, ok := v.(map[string]interface{})
	if !ok {
		logger.Warningf("Could not assert interface: %+v", v)
	} else {
		m["dc"] = dc
	}
}

func (u *Uchiwa) buildClientHistory(client, dc string, history []interface{}) []interface{} {
	for _, h := range history {
		m, ok := h.(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert this client history to an interface: %+v", h)
			continue
		}

		// Set some attributes for easier frontend consumption
		check, ok := m["check"].(string)
		if !ok {
			continue
		}
		m["client"] = client
		m["dc"] = dc
		m["acknowledged"] = helpers.IsAcknowledged(check, client, dc, u.Data.Stashes)

		// Add missing attributes to last_result object
		if m["last_result"] != nil {
			if m["last_status"] == 0.0 {
				continue
			}

			event, err := helpers.GetEvent(check, client, dc, &u.Data.Events)
			if err != nil {
				continue
			}

			lastResult, ok := m["last_result"].(map[string]interface{})
			if !ok {
				continue
			}

			if event["action"] != nil {
				lastResult["action"] = event["action"]
			}
			if event["occurrences"] != nil {
				lastResult["occurrences"] = event["occurrences"]
			}
		}

		// Maintain backward compatiblity with Sensu <= 0.17
		// by constructing the last_result object
		if m["last_status"] != nil && m["last_status"] != 0.0 {
			event, err := helpers.GetEvent(check, client, dc, &u.Data.Events)
			if err != nil {
				continue
			}
			m["last_result"] = event
		} else {
			m["last_result"] = map[string]interface{}{"last_execution": m["last_execution"], "status": m["last_status"]}
		}
	}

	return history
}

func (u *Uchiwa) findOutput(id *string, h map[string]interface{}, dc *string) string {
	if h["last_status"] == 0 {
		return ""
	}

	for _, e := range u.Data.Events {
		// does the dc match?
		m, ok := e.(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert this event to an interface %+v", e)
			continue
		}
		if m["dc"] != *dc {
			continue
		}

		// does the client match?
		c, ok := m["client"].(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert this client to an interface: %+v", c)
			continue
		}

		if c["name"] != *id {
			continue
		}

		// does the check match?
		k := m["check"].(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert this check to an interface: %+v", k)
			continue
		}
		if k["name"] != h["check"] {
			continue
		}
		return k["output"].(string)
	}

	return ""
}

// FindDcFromInterface ...
func FindDcFromInterface(data interface{}, datacenters *[]sensu.Sensu) (*sensu.Sensu, map[string]interface{}, error) {
	m, ok := data.(map[string]interface{})
	if !ok {
		logger.Warningf("Type assertion failed. Could not assert the given interface into a map: %+v", data)
		return nil, nil, errors.New("Could not determine the datacenter.")
	}

	id := m["dc"].(string)
	if id == "" {
		logger.Warningf("The received interface does not contain any datacenter information: ", data)
		return nil, nil, errors.New("Could not determine the datacenter.")
	}

	for _, dc := range *datacenters {
		if dc.Name == id {
			return &dc, m, nil
		}
	}

	logger.Warningf("Could not find the datacenter %s into %+v: ", id, data)
	return nil, nil, fmt.Errorf("Could not find the datacenter %s", id)
}

func findModel(id string, dc string, checks []interface{}) map[string]interface{} {
	for _, k := range checks {
		m, ok := k.(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert check interface %+v", k)
			continue
		}
		if m["name"] == id && m["dc"] == dc {
			return m
		}
	}
	return nil
}

func (u *Uchiwa) findClientInClients(id *string, dc *string) (map[string]interface{}, error) {
	for _, c := range u.Data.Clients {
		m, ok := c.(map[string]interface{})
		if !ok {
			logger.Warningf("Could not assert this client to an interface %+v", c)
			continue
		}
		if m["name"] == *id && m["dc"] == *dc {
			return m, nil
		}
	}
	return nil, fmt.Errorf("Could not find client %s", *id)
}

func (s *Sensu) getSlice(endpoint string, limit int) ([]interface{}, error) {
	apis := shuffle(s.APIs)

	for i := 0; i < len(apis); i++ {
		logger.Debugf("GET %s/%s", s.APIs[i].URL, endpoint)
		slice, err := apis[i].getSlice(endpoint, limit)
		if err == nil {
			return slice, err
		}
		logger.Warningf("GET %s/%s returned: %v", s.APIs[i].URL, endpoint, err)
	}

	return nil, errors.New("")
}

func (s *Sensu) postPayload(endpoint string, payload string) (map[string]interface{}, error) {
	apis := shuffle(s.APIs)

	for i := 0; i < len(apis); i++ {
		logger.Debugf("POST %s/%s", s.APIs[i].URL, endpoint)
		m, err := apis[i].postPayload(endpoint, payload)
		if err == nil {
			return m, err
		}
		logger.Warningf("POST %s/%s returned: %v", s.APIs[i].URL, endpoint, err)
	}

	return nil, errors.New("")
}

func (s *Sensu) getBytes(endpoint string) ([]byte, *http.Response, error) {
	apis := shuffle(s.APIs)

	for i := 0; i < len(apis); i++ {
		logger.Debugf("GET %s/%s", s.APIs[i].URL, endpoint)
		bytes, res, err := apis[i].getBytes(endpoint)
		if err == nil {
			return bytes, res, err
		}
		logger.Warningf("GET %s/%s returned: %v", s.APIs[i].URL, endpoint, err)
	}

	return nil, nil, errors.New("")
}

func (s *Sensu) delete(endpoint string) error {
	apis := shuffle(s.APIs)

	var err error
	for i := 0; i < len(apis); i++ {
		logger.Infof("DELETE %s/%s", s.APIs[i].URL, endpoint)
		err = apis[i].delete(endpoint)
		if err == nil {
			return err
		}
		logger.Warningf("DELETE %s/%s returned: %v", s.APIs[i].URL, endpoint, err)
	}

	return err
}