Best K6 code snippet using netext.Read
module.go
Source:module.go
...46 GROUP_BALANCER_RACK_AFFINITY: &kafkago.RackAffinityGroupBalancer{},47 }48 // Initialize the isolation levels map49 IsolationLevels = map[string]kafkago.IsolationLevel{50 ISOLATION_LEVEL_READ_UNCOMMITTED: kafkago.ReadUncommitted,51 ISOLATION_LEVEL_READ_COMMITTED: kafkago.ReadCommitted,52 }53 // Register the module namespace (aka. JS import path)54 modules.Register("k6/x/kafka", New())55}56type (57 Kafka struct {58 vu modules.VU59 metrics kafkaMetrics60 serializerRegistry *Serde[Serializer]61 deserializerRegistry *Serde[Deserializer]62 exports *goja.Object63 }64 RootModule struct{}65 KafkaModule struct {66 *Kafka67 }68)69var (70 _ modules.Instance = &KafkaModule{}71 _ modules.Module = &RootModule{}72)73// New creates a new instance of the root module74func New() *RootModule {75 return &RootModule{}76}77// NewModuleInstance creates a new instance of the Kafka module78func (*RootModule) NewModuleInstance(vu modules.VU) modules.Instance {79 rt := vu.Runtime()80 m, err := registerMetrics(vu)81 if err != nil {82 common.Throw(vu.Runtime(), err)83 }84 // Create a new Kafka module85 kafkaModuleInstance := &KafkaModule{86 Kafka: &Kafka{87 vu: vu,88 metrics: m,89 serializerRegistry: NewSerializersRegistry(),90 deserializerRegistry: NewDeserializersRegistry(),91 exports: rt.NewObject(),92 },93 }94 // Export constants to the JS code95 kafkaModuleInstance.defineConstants()96 mustExport := func(name string, value interface{}) {97 if err := kafkaModuleInstance.exports.Set(name, value); err != nil {98 common.Throw(rt, err)99 }100 }101 // Export the functions from the Kafka module to the JS code102 // The Writer is a constructor and must be called with new, e.g. new Writer(...)103 mustExport("Writer", kafkaModuleInstance.XWriter)104 // The Reader is a constructor and must be called with new, e.g. new Reader(...)105 mustExport("Reader", kafkaModuleInstance.XReader)106 // The Connection is a constructor and must be called with new, e.g. new Connection(...)107 mustExport("Connection", kafkaModuleInstance.XConnection)108 // This causes the struct fields to be exported to the native (camelCases) JS code.109 vu.Runtime().SetFieldNameMapper(goja.TagFieldNameMapper("json", true))110 return kafkaModuleInstance111}112// Exports returns the exports of the Kafka module, which are the functions113// that can be called from the JS code.114func (c *KafkaModule) Exports() modules.Exports {115 return modules.Exports{116 Default: c.Kafka.exports,117 }118}119func (c *KafkaModule) defineConstants() {...
forward.go
Source:forward.go
...25 logger: logger,26 udpBufferPool: bytesext.NewPoolWith(0, math.MaxUint16),27 }28}29func (f *forwarder) ForwardTCP(ctx context.Context, downstream io.ReadWriteCloser) error {30 upstreamConn, err := f.dialer.DialContext(ctx, "tcp", f.opts.UpstreamTCP)31 if err != nil {32 upstreamConn.Close()33 return err34 }35 upstream := netext.NewTimedConn(upstreamConn, f.opts.Timeout, f.opts.Timeout)36 errc := make(chan error, 2)37 go f.stream(downstream, upstream, errc)38 go f.stream(upstream, downstream, errc)39 return f.wait(ctx, upstreamConn.Close, downstream.Close, errc, 2)40}41func (f *forwarder) ForwardUDP(ctx context.Context, downstream io.ReadWriteCloser) error {42 upstreamConn, err := f.dialer.DialContext(ctx, "udp", f.opts.UpstreamUDP)43 if err != nil {44 downstream.Close()45 return err46 }47 upstream := netext.NewTimedConn(upstreamConn, f.opts.Timeout, f.opts.Timeout)48 errc := make(chan error, 2)49 go func() { // upstream -> downstream50 buf := f.udpBufferPool.Get(math.MaxUint16)51 var (52 n int53 err error54 )55 for {56 if n, err = upstream.Read(buf); err != nil {57 break58 }59 if err = encoding.WriteU16SizedBytes(downstream, buf[:n]); err == nil {60 if f, ok := downstream.(ioext.Flusher); ok {61 err = f.Flush()62 }63 }64 if err != nil {65 break66 }67 }68 f.udpBufferPool.Put(buf)69 errc <- err70 }()71 go func() { // downstream -> upstream72 buf := f.udpBufferPool.Get(math.MaxUint16)73 var (74 n int75 err error76 )77 for {78 if n, err = encoding.ReadU16SizedBytes(downstream, buf); err != nil {79 break80 }81 // NOTE: use of WriteTo with pre-connected connection82 if _, err = upstream.Write(buf[:n]); err != nil {83 break84 }85 }86 f.udpBufferPool.Put(buf)87 errc <- err88 }()89 return f.wait(ctx, upstreamConn.Close, downstream.Close, errc, 2)90}91func (f *forwarder) wait(ctx context.Context, upCloseFunc, downCloseFunc func() error, errc <-chan error, n int) error {92 donec := ctx.Done()93 multierr := &errorsext.MultiErr{}94 closed := false95 for n > 0 {96 select {97 case err := <-errc:98 n--99 multierr.Append(err)100 case <-donec:101 donec = nil102 }103 if !closed {104 closed = true105 _ = upCloseFunc()106 _ = downCloseFunc()107 }108 }109 if !closed {110 _ = upCloseFunc()111 _ = downCloseFunc()112 }113 return multierr.Err()114}115func (f *forwarder) stream(dst io.Writer, src io.Reader, errc chan error) {116 _, err := goodogioutil.Copy(dst, src, false)117 errc <- err118}...
tcp.go
Source:tcp.go
...55 return56 }57 p.upstreams.Inc()58 errc := make(chan error, 2)59 streamFunc := func(dst, src io.ReadWriter, msg string) {60 _, err := goodogioutil.Copy(dst, src, false)61 p.logger.Debug(msg,62 zap.String("upstream", p.conf.ServerHost()),63 zap.String("downstream", downstreamConn.RemoteAddr().String()),64 zap.Error(err),65 )66 if err != nil {67 p.readWriteErrors.Inc()68 }69 errc <- err70 }71 downstream := netext.NewTimedConn(downstreamConn, p.conf.Timeout, p.conf.Timeout)72 upstream = tryWrapWithCompression(upstream, p.conf.Compression)73 go streamFunc(downstream, upstream, "upstream->downstream done")...
Read
Using AI Code Generation
1import (2func main() {3 http.HandleFunc("/", handler)4 http.ListenAndServe(":8080", nil)5}6func handler(w http.ResponseWriter, r *http.Request) {7 fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])8}9import (10func main() {11 http.HandleFunc("/", handler)12 http.ListenAndServe(":8080", nil)13}14func handler(w http.ResponseWriter, r *http.Request) {15 fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])16}17import (18func main() {19 http.HandleFunc("/", handler)20 http.ListenAndServe(":8080", nil)21}22func handler(w http.ResponseWriter, r *http.Request) {23 fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])24}25import (26func main() {27 http.HandleFunc("/", handler)28 http.ListenAndServe(":8080", nil)29}30func handler(w http.ResponseWriter, r *http.Request) {31 fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])32}33import (34func main() {35 http.HandleFunc("/", handler)36 http.ListenAndServe(":8080", nil)37}38func handler(w http.ResponseWriter, r *http.Request) {39 fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])40}41import (42func main() {43 http.HandleFunc("/", handler)44 http.ListenAndServe(":8080", nil)45}46func handler(w http.ResponseWriter, r *http.Request) {47 fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])48}
Read
Using AI Code Generation
1import (2func main() {3 conn, err := net.Dial("tcp", "localhost:8080")4 if err != nil {5 fmt.Println(err)6 }7 b := make([]byte, 1024)8 n, err := conn.Read(b)9 if err != nil {10 fmt.Println(err)11 }12 fmt.Println(string(b[:n]))13}14import (15func main() {16 conn, err := net.Dial("tcp", "localhost:8080")17 if err != nil {18 fmt.Println(err)19 }20 conn.Write([]byte("Hello World"))21}22import (23func main() {24 conn, err := net.Dial("tcp", "localhost:8080")25 if err != nil {26 fmt.Println(err)27 }28 b := make([]byte, 1024)29 n, _, err := conn.ReadFrom(b)30 if err != nil {31 fmt.Println(err)32 }33 fmt.Println(string(b[:n]))34}35import (36func main() {37 conn, err := net.Dial("tcp", "localhost:8080")38 if err != nil {39 fmt.Println(err)40 }41 conn.WriteTo([]byte("Hello World"), nil)42}43import (44func main() {45 conn, err := net.Dial("tcp", "localhost:8080")46 if err != nil {47 fmt.Println(err)48 }49 conn.CloseWrite()50}
Read
Using AI Code Generation
1import (2func main() {3 req, err := http.NewRequest("GET", "/", nil)4 if err != nil {5 fmt.Println(err)6 }7 rr := httptest.NewRecorder()8 handler := http.HandlerFunc(HelloWorldHandler)9 handler.ServeHTTP(rr, req)10 if status := rr.Code; status != http.StatusOK {11 fmt.Println(status)12 }13 fmt.Println(rr.Body.String())14 if rr.Body.String() != expected {15 fmt.Println(rr.Body.String())16 }17}18func HelloWorldHandler(w http.ResponseWriter, r *http.Request) {19 fmt.Fprintf(w, "Hello World")20}21import (22func main() {23 req, err := http.NewRequest("GET", "/", nil)24 if err != nil {25 fmt.Println(err)26 }27 rr := httptest.NewRecorder()28 handler := http.HandlerFunc(HelloWorldHandler)29 handler.ServeHTTP(rr, req)30 if status := rr.Code; status != http.StatusOK {31 fmt.Println(status)32 }33 fmt.Println(rr.Body.String())34 if rr.Body.String() != expected {35 fmt.Println(rr.Body.String())36 }
Read
Using AI Code Generation
1import (2func main() {3server, err := net.Listen("tcp", ":8080")4if err != nil {5fmt.Println("Error listening:", err.Error())6}7defer server.Close()8conn, err := server.Accept()9if err != nil {10fmt.Println("Error accepting: ", err.Error())11}12go handleRequest(conn)13}14func handleRequest(conn net.Conn) {15buf := make([]byte, 1024)16_, err := conn.Read(buf)17if err != nil {18fmt.Println("Error reading:", err.Error())19}20conn.Write([]byte("Message received."))21conn.Close()22}23import (24func main() {25conn, err := net.Dial("tcp", "
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