How to use handleMetric method of json Package

Best K6 code snippet using json.handleMetric

statsdproxy.go

Source:statsdproxy.go

1package main2import (3	"bytes"4	"encoding/json"5	"flag"6	"fmt"7	"hash/fnv"8	"log"9	"net"10	"os"11	"time"12)13// StatsdServer represents a backend instance14type StatsdServer struct {15	IP       string16	UDPPort  string17	MgmtPort string18}19// Configuration stores the core configuration of the proxy20type Configuration struct {21	CheckInterval uint22	ListenPort    uint23	Servers       []StatsdServer24}25// UDPAddress returns the string representation of the statsd udp endpoint26func (s *StatsdServer) UDPAddress() string {27	return net.JoinHostPort(s.IP, s.UDPPort)28}29// MgmtAddress returns the string representation of the statsd management30// address31func (s *StatsdServer) MgmtAddress() string {32	return net.JoinHostPort(s.IP, s.MgmtPort)33}34// CheckStatsdHealth checks the health of a single instance35func (s *StatsdServer) CheckStatsdHealth() (up bool, err error) {36	addr := s.MgmtAddress()37	conn, err := net.Dial("tcp", addr)38	if err != nil {39		return false, fmt.Errorf("Failed to connect to %s: %s", addr, err)40	}41	defer conn.Close()42	count, err := conn.Write([]byte("health\n"))43	if count != 7 || err != nil {44		return false, fmt.Errorf("Failed to get health on %s: %s", addr, err)45	}46	buffer := make([]byte, 100)47	count, err = conn.Read(buffer)48	if count != 11 || err != nil {49		return false, fmt.Errorf("Unable to read health response from %s: %s", addr, err)50	}51	if bytes.Equal(buffer[0:count], []byte("health: up\n")) {52		conn.Write([]byte("quit\n"))53		return true, error(nil)54	}55	return false, fmt.Errorf("Health check to %s failed: Response %s", addr, string(buffer))56}57// CheckBackend checks each backend server in turn58func CheckBackend(servers []StatsdServer, statusChan chan<- []StatsdServer, done <-chan struct{}, checkInterval uint) {59	for {60		select {61		case <-done:62			return63		default:64			var liveServers []StatsdServer65			for _, server := range servers {66				up, err := server.CheckStatsdHealth()67				if up && err == nil {68					liveServers = append(liveServers, server)69				} else {70					log.Printf("Removing server %s: %s", server.UDPAddress(), err)71				}72			}73			statusChan <- liveServers74		}75		time.Sleep(time.Duration(checkInterval) * time.Second)76	}77}78// HandleMetric handles an individual metric string by hashing and passing to a79// backend80func HandleMetric(servers []StatsdServer, metric []byte) {81	h := fnv.New32a()82	metric = bytes.TrimSpace(metric)83	metricName := bytes.SplitN(metric, []byte(":"), 2)[0]84	h.Write(metricName)85	if len(servers) > 0 {86		destIndex := h.Sum32() % uint32(len(servers))87		LocalAddr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")88		if err != nil {89			log.Printf("Failed to resolve local udp address: %s", err)90		}91		RemoteAddr, err := net.ResolveUDPAddr("udp", servers[destIndex].UDPAddress())92		if err != nil {93			log.Printf("Failed to resolve remote address (%s): %s", servers[destIndex].UDPAddress(), err)94		}95		Conn, err := net.DialUDP("udp", LocalAddr, RemoteAddr)96		defer Conn.Close()97		if err != nil {98			log.Printf("Failed to write metric to %s: %s",99				servers[destIndex].UDPAddress(),100				err,101			)102		} else {103			_, err := Conn.Write(metric)104			if err != nil {105				log.Printf("Failed to write metric to %s: %s", servers[destIndex].UDPAddress(), err)106			}107		}108	}109}110// LoadConfig loads the config from the config file111func LoadConfig(filename string) Configuration {112	file, err := os.Open(filename)113	if err != nil {114		log.Fatalf("Failed to read config %s: %s", filename, err)115	}116	configuration := Configuration{}117	err = json.NewDecoder(file).Decode(&configuration)118	if err != nil {119		log.Fatalf("Failed to decode config %s: %s", filename, err)120	}121	return configuration122}123// ListenStatsD listens for stats on the default port124func ListenStatsD(port uint, done <-chan struct{}, metricChan chan<- []byte) {125	ServerAddr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf(":%d", port))126	if err != nil {127		log.Printf("Failed to resolve listening address: %s", err)128	}129	ServerConn, err := net.ListenUDP("udp", ServerAddr)130	if err != nil {131		log.Printf("Failed to listen at listening port: %s", err)132	}133	defer ServerConn.Close()134	for {135		select {136		case <-done:137			return138		default:139			buf := make([]byte, 1024, 1024)140			count, _, err := ServerConn.ReadFromUDP(buf)141			if err != nil {142				log.Printf("Failed to read from socket: %s", err)143			} else {144				metricChan <- buf[0:count]145			}146		}147	}148}149func main() {150	var configFile = flag.String("config", "/etc/statsdproxy.json", "Config file to load")151	flag.Parse()152	config := LoadConfig(*configFile)153	liveServers := config.Servers154	done := make(chan struct{})155	defer close(done)156	statusChan := make(chan []StatsdServer)157	metricChan := make(chan []byte, 100)158	go CheckBackend(config.Servers, statusChan, done, config.CheckInterval)159	go ListenStatsD(config.ListenPort, done, metricChan)160	for {161		select {162		case liveServers = <-statusChan:163			if len(liveServers) == 0 {164				log.Printf("No live servers to send metrics to. Dropping packets")165			}166		case metric := <-metricChan:167			go HandleMetric(liveServers, metric)168		}169	}170}...

metrics.go

Source:metrics.go

...16	Host   string    `json:"host"`17	CPU    float64   `json:"cpu"`    // CPU load18	Memory float64   `json:"memory"` // MB19}20func handleMetric(w http.ResponseWriter, r *http.Request) {21	if r.Method != "POST" {22		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)23		return24	}25	defer r.Body.Close()26	var m Metric27	const maxSize = 1 << 20 // MB28	dec := json.NewDecoder(io.LimitReader(r.Body, maxSize))29	if err := dec.Decode(&m); err != nil {30		log.Printf("error decoding: %s", err)31		http.Error(w, err.Error(), http.StatusBadRequest)32		return33	}34	id := db.Add(m)35	log.Printf("metric: %+v (id=%s)", m, id)36	w.Header().Set("Content-Type", "application/json")37	resp := map[string]interface{}{38		"id": id,39	}40	if err := json.NewEncoder(w).Encode(resp); err != nil {41		log.Printf("error reply: %s", err)42	}43}44func main() {45	http.HandleFunc("/metric", handleMetric)46	addr := os.Getenv("ADDR")47	if addr == "" {48		addr = ":8080"49	}50	log.Printf("server ready on %s", addr)51	if err := http.ListenAndServe(addr, nil); err != nil {52		log.Fatal(err)53	}54}...

handleMetric

Using AI Code Generation

1import (2func main() {3    http.HandleFunc("/", handleMetric)4    log.Fatal(http.ListenAndServe(":8080", nil))5}6func handleMetric(w http.ResponseWriter, r *http.Request) {7    enc := json.NewEncoder(w)8    enc.SetIndent("", "  ")9    enc.Encode(map[string]interface{}{10        "time": time.Now().Format(time.RFC3339),11    })12}13import (14func main() {15    http.HandleFunc("/", handleMetric)16    log.Fatal(http.ListenAndServe(":8080", nil))17}18func handleMetric(w http.ResponseWriter, r *http.Request) {19    enc := json.NewEncoder(w)20    enc.SetIndent("", "  ")21    enc.Encode(map[string]interface{}{22        "time": time.Now().Format(time.RFC3339),23    })24}25import (26func main() {27    http.HandleFunc("/", handleMetric)28    log.Fatal(http.ListenAndServe(":8080", nil))29}30func handleMetric(w http.ResponseWriter, r *http.Request) {31    enc := json.NewEncoder(w)32    enc.SetIndent("", "  ")33    enc.Encode(map[string]interface{}{34        "time": time.Now().Format(time.RFC3339),35    })36}37import (38func main() {39    http.HandleFunc("/", handleMetric)40    log.Fatal(http.ListenAndServe(":8080", nil))41}42func handleMetric(w http.ResponseWriter, r *http.Request) {

handleMetric

Using AI Code Generation

1import (2var (3	registry = prometheus.NewRegistry()4	counter = promauto.NewCounter(prometheus.CounterOpts{5	}, []string{"method", "code"})6type jsonHandler struct {7}8func (h *jsonHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {9	counter.WithLabelValues(r.Method, "200").Inc()10	h.handler.ServeHTTP(w, r)11}12func main() {13	router := mux.NewRouter()14	jh := &jsonHandler{15		handler: promhttp.HandlerFor(registry, promhttp.HandlerOpts{}),16	}17	router.Handle("/metrics", jh)18	router.HandleFunc("/hello", handleMetric).Methods("GET")19	log.Fatal(http.ListenAndServe(":8080", router))20}21func handleMetric(w http.ResponseWriter, r *http.Request) {22	w.Header().Set("Content-Type", "application/json")23	m := map[string]interface{}{24	}25	enc := json.NewEncoder(w)26	if err := enc.Encode(m); err != nil {27		http.Error(w, err.Error(), http.StatusInternalServerError)28	}29}

handleMetric

Using AI Code Generation

1func main() {2}3func main() {4}5func main() {6}7func handleMetric() {8}9func main() {10}11func handleMetric() {12}13func main() {14}15func handleMetric() {16}

handleMetric

Using AI Code Generation

1import (2func main() {3	json := &JSON{}4	json.handleMetric()5}6import (7func main() {8	fmt.Println("Hello World")9}10import (11func main() {12	fmt.Println("Hello World")13}14import (15func main() {16	fmt.Println("Hello World")17}18import (19func main() {20	fmt.Println("Hello World")21}22import (23func main() {24	fmt.Println("Hello World")25}26import (27func main() {28	fmt.Println("Hello World")29}30import (31func main() {32	fmt.Println("Hello World")33}34import (35func main() {36	fmt.Println("Hello World")37}38import (39func main() {40	fmt.Println("Hello World")41}42import (43func main() {44	fmt.Println("Hello World")45}46import (47func main() {48	fmt.Println("Hello World")49}50import (51func main() {52	fmt.Println("Hello World")53}54import (55func main() {56	fmt.Println("Hello World")57}58import (59func main() {60	fmt.Println("Hello World")61}62import (63func main() {64	fmt.Println("Hello World")65}66import (67func main() {68	fmt.Println("Hello World")69}70import (71func main() {72	fmt.Println("Hello World")73}74import (

handleMetric

Using AI Code Generation

1import (2type Metric struct {3}4func main() {5	jsonString := `{"path": "1.go", "value": 1.1}`6	err := json.Unmarshal([]byte(jsonString), &metric)7	if err != nil {8		fmt.Println("Error unmarshalling json string")9		fmt.Println(err)10	}11	metric.handleMetric()12}13func (metric *Metric) handleMetric() {14	fmt.Println("Handling metric")15	fmt.Println("Path: " + metric.Path)16	fmt.Println("Value: ", metric.Value)17}

handleMetric

Using AI Code Generation

1import (2type Metric struct {3}4func (m *Metric) handleMetric() {5}6func main() {7	m := &Metric{}8	dec := json.NewDecoder(os.Stdin)9	for {10		if err := dec.Decode(m); err != nil {11		}12		m.handleMetric()13	}14}15import (16type Metric struct {17}18func (m *Metric) handleMetric() {19}20func main() {21	m := &Metric{}22	dec := json.NewDecoder(os.Stdin)23	for {24		if err := dec.Decode(m); err != nil {25		}26		m.handleMetric()27	}28}29import (30type Metric struct {31}32func (m *Metric) handleMetric() {33}34func main() {35	m := &Metric{}36	dec := json.NewDecoder(os.Stdin)37	for {38		if err := dec.Decode(m); err != nil {39		}40		m.handleMetric()41	}42}43import (44type Metric struct {45}46func (m *Metric) handleMetric() {47}48func main() {49	m := &Metric{}50	dec := json.NewDecoder(os.Stdin)51	for {52		if err := dec.Decode(m); err != nil {53		}54		m.handleMetric()55	}56}57import (58type Metric struct {59}60func (m *Metric) handleMetric() {61}62func main() {63	m := &Metric{}64	dec := json.NewDecoder(os.Stdin)65	for {66		if err := dec.Decode(m); err != nil {

handleMetric

Using AI Code Generation

1import (2func main() {3	var jsonInput = make(map[string]interface{})4	fmt.Println("Please enter the metric name and value")5	scanner := bufio.NewScanner(os.Stdin)6	for scanner.Scan() {7		input = scanner.Text()8		if input == "" {9		}10		str := strings.Split(input, " ")11		metricValue = toFloat(str[1])12	}13	jsonData, err := json.Marshal(jsonInput)14	if err != nil {15		fmt.Println("Error in marshaling data")16	}17	json.Unmarshal(jsonData, &jsonInput)18	fmt.Println(jsonInput)19}20func toFloat(s string) float64 {21	f, err := strconv.ParseFloat(s, 64)22	if err != nil {23		fmt.Println(err)24	}25}26import (27func main() {28	var jsonInput = make(map[string]interface{})29	fmt.Println("Please enter the metric name and value")30	scanner := bufio.NewScanner(os.Stdin)31	for scanner.Scan() {32		input = scanner.Text()33		if input == "" {34		}35		str := strings.Split(input, " ")36		metricValue = toFloat(str[1])37	}38	jsonData, err := json.Marshal(jsonInput)39	if err != nil {40		fmt.Println("Error in marshaling data")41	}42	json.Unmarshal(jsonData, &jsonInput)43	fmt.Println(jsonInput)44}45func toFloat(s string) float64 {46	f, err := strconv.ParseFloat(s, 64)47	if err != nil {48		fmt.Println(err)49	}50}51import (

handleMetric

Using AI Code Generation

1import (2func main() {3    j.HandleMetric()4    fmt.Println(j)5}6type JSON struct {7}8func (j *JSON) HandleMetric() {9}10{John 20}11{John 20}12type JSON struct {13}14func (j *JSON) HandleMetric() {15}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.