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How to use Subscribe method of event Package

Best Testkube code snippet using event.Subscribe

client_test.go

Source:client_test.go

...53		subsCopy[key] = val54	}55	return subsCopy56}57func TestSubscribe(t *testing.T) {58	ps := NewPubSub(logging.NewLogger("testing"))59	s := kite.New("s", "0.0.0")60	s.Config.DisableAuthentication = true61	doneC, subscribe := handlerWrapper(ps.Subscribe)62	s.HandleFunc("client.Subscribe", subscribe)63	ts := httptest.NewServer(s)64	defer ts.Close()65	c1 := kite.New("c1", "0.0.0").NewClient(fmt.Sprintf("%s/kite", ts.URL))66	c2 := kite.New("c2", "0.0.0").NewClient(fmt.Sprintf("%s/kite", ts.URL))67	err := c1.Dial()68	if err != nil {69		t.Fatal("Failed to connect to testing Kite", err)70	}71	err = c2.Dial()72	if err != nil {73		t.Fatal("Failed to connect to testing Kite", err)74	}75	// Should require arguments76	_, err = c1.Tell("client.Subscribe")77	if err == nil {78		t.Error("client.Subscribe should require args")79	}80	if err = wait(doneC, time.Second); err != nil {81		t.Fatalf("want err = nil; got %v", err)82	}83	// Should require eventName84	_, err = c1.Tell("client.Subscribe", struct {85		Data      string86		OnPublish dnode.Function87	}{88		Data:      "foo",89		OnPublish: dnode.Callback(func(f *dnode.Partial) {}),90	})91	if err == nil {92		t.Error("client.Subscribe should require EventName")93	}94	if err = wait(doneC, time.Second); err != nil {95		t.Fatalf("want err = nil; got %v", err)96	}97	// Should require onPublish98	_, err = c1.Tell("client.Subscribe", struct {99		eventName string100		Data      string101	}{102		eventName: "foo",103		Data:      "bar",104	})105	if err == nil {106		t.Error("client.Subscribe should require OnPublish")107	}108	if err = wait(doneC, time.Second); err != nil {109		t.Fatalf("want err = nil; got %v", err)110	}111	// Should require valid onPublish func112	_, err = c1.Tell("client.Subscribe", struct {113		eventName string114		onPublish string115	}{116		eventName: "foo",117		onPublish: "bar",118	})119	if err == nil {120		t.Error("client.Subscribe should require a valid OnPublish func")121	}122	if err = wait(doneC, time.Second); err != nil {123		t.Fatalf("want err = nil; got %v", err)124	}125	// Should subscribe to any given event name126	pRes, err := c1.Tell("client.Subscribe", SubscribeRequest{127		EventName: "test",128		OnPublish: dnode.Callback(func(f *dnode.Partial) {}),129	})130	if err != nil {131		t.Error(err)132	}133	if err = wait(doneC, time.Second); err != nil {134		t.Fatalf("want err = nil; got %v", err)135	}136	subs := getCopy(ps, "test")137	if len(subs) != 1 {138		t.Fatal("client.Subscribe should store a single onPublish callback")139	}140	// Should return the subIndex141	var res SubscribeResponse142	if err = pRes.Unmarshal(&res); err != nil {143		t.Errorf("client.Subscribe should return a valid response struct. err:%s", err)144	}145	if expected := 1; res.ID != expected {146		t.Errorf(147			"client.Subscribe should return the response id. Wanted:%d, Got:%d",148			expected, res.ID,149		)150	}151	// Should store the proper callback152	successC := make(chan struct{}, 1)153	pRes, _ = c1.Tell("client.Subscribe", SubscribeRequest{154		EventName: "test",155		OnPublish: dnode.Callback(func(f *dnode.Partial) {156			select {157			case successC <- struct{}{}:158			case <-time.After(time.Second): // Don't leak go-routines.159			}160		}),161	})162	if err = wait(doneC, time.Second); err != nil {163		t.Fatalf("want err = nil; got %v", err)164	}165	if err != nil {166		t.Fatal(err)167	}168	subs = getCopy(ps, "test")169	if len(subs) != 2 {170		t.Fatal("client.Subscribe should store multiple onPublish callbacks")171	}172	subs[2].Call()173	if err = wait(successC, time.Second); err != nil {174		t.Fatalf("want err = nil; got %v", err)175	}176	if err = pRes.Unmarshal(&res); err != nil {177		t.Errorf("client.Subscribe should return a valid response struct. err:%s", err)178	}179	if expected := 2; res.ID != expected {180		t.Errorf(181			"client.Subscribe should return the response id. Wanted:%d, Got:%d",182			expected, res.ID,183		)184	}185	// Should allow multiple clients to subscribe186	pRes, err = c2.Tell("client.Subscribe", SubscribeRequest{187		EventName: "test",188		OnPublish: dnode.Callback(func(_ *dnode.Partial) {}),189	})190	if err != nil {191		t.Error(err)192	}193	if err = wait(doneC, time.Second); err != nil {194		t.Fatalf("want err = nil; got %v", err)195	}196	subs = getCopy(ps, "test")197	if len(subs) != 3 {198		t.Fatal("client.Subscribe should allow multiple clients to Sub")199	}200	if err = pRes.Unmarshal(&res); err != nil {201		t.Errorf("client.Subscribe should return a valid response struct. err:%s", err)202	}203	if expected := 3; res.ID != expected {204		t.Errorf(205			"client.Subscribe should return the response id. Wanted:%d, Got:%d",206			expected, res.ID,207		)208	}209	// disconnectFunc will be added to kite's OnDisconnect callback slice.210	// Since kite callbacks are synchronous, we will provide synchronization211	// with Subscriptions map.212	disconnectedC := make(chan struct{})213	s.OnDisconnect(func(_ *kite.Client) {214		select {215		case disconnectedC <- struct{}{}:216		case <-time.After(time.Second):217		}218	})219	// Should remove onPublish func after the client disconnects220	c1.Close()221	if err = wait(disconnectedC, 2*time.Second); err != nil {222		t.Fatalf("want err = nil; got %v", err)223	}224	subs = getCopy(ps, "test")225	if len(subs) != 1 {226		t.Error("client.Subscribe",227			"should remove all of a clients callbacks on Disconnect")228	}229	// Should remove the map, when all clients disconnect230	c2.Close()231	if err = wait(disconnectedC, 2*time.Second); err != nil {232		t.Fatalf("want err = nil; got %v", err)233	}234	subs = getCopy(ps, "test")235	if subs != nil {236		t.Error("client.Subscribe",237			"should remove the event map when all clients disconnect")238	}239}240func TestPublish(t *testing.T) {241	ps := NewPubSub(logging.NewLogger("testing"))242	s := kite.New("s", "0.0.0")243	s.Config.DisableAuthentication = true244	doneC, publish := handlerWrapper(ps.Publish)245	s.HandleFunc("client.Publish", publish)246	ts := httptest.NewServer(s)247	defer ts.Close()248	k := kite.New("c", "0.0.0")249	c := k.NewClient(fmt.Sprintf("%s/kite", ts.URL))250	err := c.Dial()251	if err != nil {252		t.Fatal("Failed to connect to testing Kite", err)253	}254	// Should require args255	_, err = c.Tell("client.Publish")256	if err == nil {257		t.Error("client.Publish should require args")258	}259	if err = wait(doneC, time.Second); err != nil {260		t.Fatalf("want err = nil; got %v", err)261	}262	// Should require eventName263	_, err = c.Tell("client.Publish", struct {264		Random string265		Data   string266	}{267		Random: "foo",268		Data:   "bar",269	})270	if err == nil {271		t.Error("client.Publish should require EventName")272	}273	if err = wait(doneC, time.Second); err != nil {274		t.Fatalf("want err = nil; got %v", err)275	}276	// Should require subscriptions for the given event277	_, err = c.Tell("client.Publish", PublishRequest{278		EventName: "foo",279	})280	if err == nil {281		t.Error("client.Publish should return an error, without any subs")282	}283	if err = wait(doneC, time.Second); err != nil {284		t.Fatalf("want err = nil; got %v", err)285	}286	// Should call onPublish callbacks287	callbackCount := 0288	ps.Subscriptions["test"] = map[int]dnode.Function{289		0: {mockCaller(func(v ...interface{}) error {290			callbackCount += 1291			return nil292		})},293		1: {mockCaller(func(v ...interface{}) error {294			callbackCount += 2295			return nil296		})},297	}298	_, err = c.Tell("client.Publish", PublishRequest{299		EventName: "test",300	})301	if err != nil {302		t.Fatal("client.Publish should call onPublish callbacks without error.", err)303	}304	if err = wait(doneC, time.Second); err != nil {305		t.Fatalf("want err = nil; got %v", err)306	}307	if callbackCount != 3 {308		t.Fatal("client.Publish should call onPublish callbacks")309	}310	// Should publish arbitrary data311	var b []byte312	updatedC := make(chan struct{}, 1)313	ps.Subscriptions["other"] = map[int]dnode.Function{314		0: {mockCaller(func(v ...interface{}) error {315			b = v[0].([]interface{})[0].(*dnode.Partial).Raw316			select {317			case updatedC <- struct{}{}:318			case <-time.After(time.Second):319			}320			return nil321		})},322	}323	_, err = c.Tell("client.Publish", struct {324		EventName string325		CountData int326		ListData  []string327	}{328		EventName: "other",329		CountData: 42,330		ListData:  []string{"life", "universe", "everything"},331	})332	if err != nil {333		t.Fatal("client.Publish should publish data without error", err)334	}335	if err = wait(doneC, time.Second); err != nil {336		t.Fatalf("want err = nil; got %v", err)337	}338	// callback is called by another go-routine. we need to synchronize it.339	if err = wait(updatedC, time.Second); err != nil {340		t.Fatalf("want err = nil; got %v", err)341	}342	// This might be a faulty check, because the order of the data may343	// change. If it does, we'll just unmarshall and compare.344	expected := `{"EventName":"other","CountData":42,"ListData":["life","universe","everything"]}`345	if string(b) != expected {346		t.Error("client.Publish should publish arbitrary")347	}348}349func TestUnsubscribe(t *testing.T) {350	ps := NewPubSub(logging.NewLogger("testing"))351	s := kite.New("s", "0.0.0")352	s.Config.DisableAuthentication = true353	donePubC, publish := handlerWrapper(ps.Publish)354	s.HandleFunc("client.Publish", publish)355	doneSubC, subscribe := handlerWrapper(ps.Subscribe)356	s.HandleFunc("client.Subscribe", subscribe)357	doneUnsubC, unsubscribe := handlerWrapper(ps.Unsubscribe)358	s.HandleFunc("client.Unsubscribe", unsubscribe)359	ts := httptest.NewServer(s)360	defer ts.Close()361	c1 := kite.New("c1", "0.0.0").NewClient(fmt.Sprintf("%s/kite", ts.URL))362	c2 := kite.New("c2", "0.0.0").NewClient(fmt.Sprintf("%s/kite", ts.URL))363	err := c1.Dial()364	if err != nil {365		t.Fatal("Failed to connect to testing Kite", err)366	}367	err = c2.Dial()368	if err != nil {369		t.Fatal("Failed to connect to testing Kite", err)370	}371	// Track the calls to our subs.372	callsMu := sync.Mutex{} // protects calls map.373	calls := map[string]bool{}374	var wg sync.WaitGroup375	wg.Add(3)376	// Setup our event, sub index 1377	_, err = c1.Tell("client.Subscribe", SubscribeRequest{378		EventName: "test",379		OnPublish: dnode.Callback(func(f *dnode.Partial) {380			defer wg.Done()381			callsMu.Lock()382			defer callsMu.Unlock()383			calls["c1:1"] = true384		}),385	})386	if err != nil {387		t.Fatal(err)388	}389	if err = wait(doneSubC, time.Second); err != nil {390		t.Fatalf("want err = nil; got %v", err)391	}392	// Setup our event, sub index 2393	_, err = c2.Tell("client.Subscribe", SubscribeRequest{394		EventName: "test",395		OnPublish: dnode.Callback(func(f *dnode.Partial) {396			defer wg.Done()397			callsMu.Lock()398			defer callsMu.Unlock()399			calls["c2:2"] = true400		}),401	})402	if err != nil {403		t.Fatal(err)404	}405	if err = wait(doneSubC, time.Second); err != nil {406		t.Fatalf("want err = nil; got %v", err)407	}408	// Setup our event, sub index 3409	_, err = c2.Tell("client.Subscribe", SubscribeRequest{410		EventName: "test",411		OnPublish: dnode.Callback(func(f *dnode.Partial) {412			defer wg.Done()413			callsMu.Lock()414			defer callsMu.Unlock()415			calls["c2:3"] = true416		}),417	})418	if err != nil {419		t.Fatal(err)420	}421	if err = wait(doneSubC, time.Second); err != nil {422		t.Fatalf("want err = nil; got %v", err)423	}424	// Setup our event, sub index 4425	_, err = c1.Tell("client.Subscribe", SubscribeRequest{426		EventName: "test",427		OnPublish: dnode.Callback(func(f *dnode.Partial) {428			defer wg.Done()429			callsMu.Lock()430			defer callsMu.Unlock()431			calls["c1:4"] = true432		}),433	})434	if err != nil {435		t.Fatal(err)436	}437	if err = wait(doneSubC, time.Second); err != nil {438		t.Fatalf("want err = nil; got %v", err)439	}...

filter_system.go

Source:filter_system.go

...139	es.install <- sub140	<-sub.installed141	return &Subscription{ID: sub.id, f: sub, es: es}142}143// SubscribeLogs creates a subscription that will write all logs matching the144// given criteria to the given logs channel. Default value for the from and to145// block is "latest". If the fromBlock > toBlock an error is returned.146func (es *EventSystem) SubscribeLogs(crit FilterCriteria, logs chan []*types.Log) (*Subscription, error) {147	var from, to rpc.BlockNumber148	if crit.FromBlock == nil {149		from = rpc.LatestBlockNumber150	} else {151		from = rpc.BlockNumber(crit.FromBlock.Int64())152	}153	if crit.ToBlock == nil {154		to = rpc.LatestBlockNumber155	} else {156		to = rpc.BlockNumber(crit.ToBlock.Int64())157	}158	// only interested in pending logs159	if from == rpc.PendingBlockNumber && to == rpc.PendingBlockNumber {160		return es.subscribePendingLogs(crit, logs), nil161	}162	// only interested in new mined logs163	if from == rpc.LatestBlockNumber && to == rpc.LatestBlockNumber {164		return es.subscribeLogs(crit, logs), nil165	}166	// only interested in mined logs within a specific block range167	if from >= 0 && to >= 0 && to >= from {168		return es.subscribeLogs(crit, logs), nil169	}170	// interested in mined logs from a specific block number, new logs and pending logs171	if from >= rpc.LatestBlockNumber && to == rpc.PendingBlockNumber {172		return es.subscribeMinedPendingLogs(crit, logs), nil173	}174	// interested in logs from a specific block number to new mined blocks175	if from >= 0 && to == rpc.LatestBlockNumber {176		return es.subscribeLogs(crit, logs), nil177	}178	return nil, fmt.Errorf("invalid from and to block combination: from > to")179}180// subscribeMinedPendingLogs creates a subscription that returned mined and181// pending logs that match the given criteria.182func (es *EventSystem) subscribeMinedPendingLogs(crit FilterCriteria, logs chan []*types.Log) *Subscription {183	sub := &subscription{184		id:        rpc.NewID(),185		typ:       MinedAndPendingLogsSubscription,186		logsCrit:  crit,187		created:   time.Now(),188		logs:      logs,189		hashes:    make(chan common.Hash),190		headers:   make(chan *types.Header),191		installed: make(chan struct{}),192		err:       make(chan error),193	}194	return es.subscribe(sub)195}196// subscribeLogs creates a subscription that will write all logs matching the197// given criteria to the given logs channel.198func (es *EventSystem) subscribeLogs(crit FilterCriteria, logs chan []*types.Log) *Subscription {199	sub := &subscription{200		id:        rpc.NewID(),201		typ:       LogsSubscription,202		logsCrit:  crit,203		created:   time.Now(),204		logs:      logs,205		hashes:    make(chan common.Hash),206		headers:   make(chan *types.Header),207		installed: make(chan struct{}),208		err:       make(chan error),209	}210	return es.subscribe(sub)211}212// subscribePendingLogs creates a subscription that writes transaction hashes for213// transactions that enter the transaction pool.214func (es *EventSystem) subscribePendingLogs(crit FilterCriteria, logs chan []*types.Log) *Subscription {215	sub := &subscription{216		id:        rpc.NewID(),217		typ:       PendingLogsSubscription,218		logsCrit:  crit,219		created:   time.Now(),220		logs:      logs,221		hashes:    make(chan common.Hash),222		headers:   make(chan *types.Header),223		installed: make(chan struct{}),224		err:       make(chan error),225	}226	return es.subscribe(sub)227}228// SubscribeNewHeads creates a subscription that writes the header of a block that is229// imported in the chain.230func (es *EventSystem) SubscribeNewHeads(headers chan *types.Header) *Subscription {231	sub := &subscription{232		id:        rpc.NewID(),233		typ:       BlocksSubscription,234		created:   time.Now(),235		logs:      make(chan []*types.Log),236		hashes:    make(chan common.Hash),237		headers:   headers,238		installed: make(chan struct{}),239		err:       make(chan error),240	}241	return es.subscribe(sub)242}243// SubscribePendingTxEvents creates a subscription that writes transaction hashes for244// transactions that enter the transaction pool.245func (es *EventSystem) SubscribePendingTxEvents(hashes chan common.Hash) *Subscription {246	sub := &subscription{247		id:        rpc.NewID(),248		typ:       PendingTransactionsSubscription,249		created:   time.Now(),250		logs:      make(chan []*types.Log),251		hashes:    hashes,252		headers:   make(chan *types.Header),253		installed: make(chan struct{}),254		err:       make(chan error),255	}256	return es.subscribe(sub)257}258type filterIndex map[Type]map[rpc.ID]*subscription259// broadcast event to filters that match criteria.260func (es *EventSystem) broadcast(filters filterIndex, ev interface{}) {261	if ev == nil {262		return263	}264	switch e := ev.(type) {265	case []*types.Log:266		if len(e) > 0 {267			for _, f := range filters[LogsSubscription] {268				if matchedLogs := filterLogs(e, f.logsCrit.FromBlock, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics); len(matchedLogs) > 0 {269					f.logs <- matchedLogs270				}271			}272		}273	case core.RemovedLogsEvent:274		for _, f := range filters[LogsSubscription] {275			if matchedLogs := filterLogs(e.Logs, f.logsCrit.FromBlock, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics); len(matchedLogs) > 0 {276				f.logs <- matchedLogs277			}278		}279	case *event.TypeMuxEvent:280		switch muxe := e.Data.(type) {281		case core.PendingLogsEvent:282			for _, f := range filters[PendingLogsSubscription] {283				if e.Time.After(f.created) {284					if matchedLogs := filterLogs(muxe.Logs, nil, f.logsCrit.ToBlock, f.logsCrit.Addresses, f.logsCrit.Topics); len(matchedLogs) > 0 {285						f.logs <- matchedLogs286					}287				}288			}289		}290	case core.TxPreEvent:291		for _, f := range filters[PendingTransactionsSubscription] {292			f.hashes <- e.Tx.Hash()293		}294	case core.ChainEvent:295		for _, f := range filters[BlocksSubscription] {296			f.headers <- e.Block.Header()297		}298		if es.lightMode && len(filters[LogsSubscription]) > 0 {299			es.lightFilterNewHead(e.Block.Header(), func(header *types.Header, remove bool) {300				for _, f := range filters[LogsSubscription] {301					if matchedLogs := es.lightFilterLogs(header, f.logsCrit.Addresses, f.logsCrit.Topics, remove); len(matchedLogs) > 0 {302						f.logs <- matchedLogs303					}304				}305			})306		}307	}308}309func (es *EventSystem) lightFilterNewHead(newHeader *types.Header, callBack func(*types.Header, bool)) {310	oldh := es.lastHead311	es.lastHead = newHeader312	if oldh == nil {313		return314	}315	newh := newHeader316	// find common ancestor, create list of rolled back and new block hashes317	var oldHeaders, newHeaders []*types.Header318	for oldh.Hash() != newh.Hash() {319		if oldh.Number.Uint64() >= newh.Number.Uint64() {320			oldHeaders = append(oldHeaders, oldh)321			oldh = core.GetHeader(es.backend.ChainDb(), oldh.ParentHash, oldh.Number.Uint64()-1)322		}323		if oldh.Number.Uint64() < newh.Number.Uint64() {324			newHeaders = append(newHeaders, newh)325			newh = core.GetHeader(es.backend.ChainDb(), newh.ParentHash, newh.Number.Uint64()-1)326			if newh == nil {327				// happens when CHT syncing, nothing to do328				newh = oldh329			}330		}331	}332	// roll back old blocks333	for _, h := range oldHeaders {334		callBack(h, true)335	}336	// check new blocks (array is in reverse order)337	for i := len(newHeaders) - 1; i >= 0; i-- {338		callBack(newHeaders[i], false)339	}340}341// filter logs of a single header in light client mode342func (es *EventSystem) lightFilterLogs(header *types.Header, addresses []common.Address, topics [][]common.Hash, remove bool) []*types.Log {343	if bloomFilter(header.Bloom, addresses, topics) {344		// Get the logs of the block345		ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)346		defer cancel()347		receipts, err := es.backend.GetReceipts(ctx, header.Hash())348		if err != nil {349			return nil350		}351		var unfiltered []*types.Log352		for _, receipt := range receipts {353			for _, log := range receipt.Logs {354				logcopy := *log355				logcopy.Removed = remove356				unfiltered = append(unfiltered, &logcopy)357			}358		}359		logs := filterLogs(unfiltered, nil, nil, addresses, topics)360		return logs361	}362	return nil363}364// eventLoop (un)installs filters and processes mux events.365func (es *EventSystem) eventLoop() {366	var (367		index = make(filterIndex)368		sub   = es.mux.Subscribe(core.PendingLogsEvent{})369		// Subscribe TxPreEvent form txpool370		txCh  = make(chan core.TxPreEvent, txChanSize)371		txSub = es.backend.SubscribeTxPreEvent(txCh)372		// Subscribe RemovedLogsEvent373		rmLogsCh  = make(chan core.RemovedLogsEvent, rmLogsChanSize)374		rmLogsSub = es.backend.SubscribeRemovedLogsEvent(rmLogsCh)375		// Subscribe []*types.Log376		logsCh  = make(chan []*types.Log, logsChanSize)377		logsSub = es.backend.SubscribeLogsEvent(logsCh)378		// Subscribe ChainEvent379		chainEvCh  = make(chan core.ChainEvent, chainEvChanSize)380		chainEvSub = es.backend.SubscribeChainEvent(chainEvCh)381	)382	// Unsubscribe all events383	defer sub.Unsubscribe()384	defer txSub.Unsubscribe()385	defer rmLogsSub.Unsubscribe()386	defer logsSub.Unsubscribe()387	defer chainEvSub.Unsubscribe()388	for i := UnknownSubscription; i < LastIndexSubscription; i++ {389		index[i] = make(map[rpc.ID]*subscription)390	}391	for {392		select {393		case ev, active := <-sub.Chan():394			if !active { // system stopped...

main.go

Source:main.go

...19	client, err := examples.CreateChainClientWithSDKConf(sdkConfigOrg1Client1Path)20	if err != nil {21		log.Fatalln(err)22	}23	go testSubscribeBlock(client, false)24	go testSubscribeBlock(client, true)25	go testSubscribeTx(client)26	go testSubscribeContractEvent(client)27	select {}28}29func testSubscribeBlock(client *sdk.ChainClient, onlyHeader bool) {30	ctx, cancel := context.WithCancel(context.Background())31	defer cancel()32	c, err := client.SubscribeBlock(ctx, 0, 10, true, onlyHeader)33	//c, err := client.SubscribeBlock(ctx, 10, -1, true, onlyHeader)34	if err != nil {35		log.Fatalln(err)36	}37	for {38		select {39		case block, ok := <-c:40			if !ok {41				fmt.Println("chan is close!")42				return43			}44			if block == nil {45				log.Fatalln("require not nil")46			}47			if onlyHeader {48				blockHeader, ok := block.(*common.BlockHeader)49				if !ok {50					log.Fatalln("require true")51				}52				fmt.Printf("recv blockHeader [%d] => %+v\n", blockHeader.BlockHeight, blockHeader)53			} else {54				blockInfo, ok := block.(*common.BlockInfo)55				if !ok {56					log.Fatalln("require true")57				}58				fmt.Printf("recv blockInfo [%d] => %+v\n", blockInfo.Block.Header.BlockHeight, blockInfo)59			}60			//if err := client.Stop(); err != nil {61			//	return62			//}63			//return64		case <-ctx.Done():65			return66		}67	}68}69func testSubscribeTx(client *sdk.ChainClient) {70	ctx, cancel := context.WithCancel(context.Background())71	defer cancel()72	c, err := client.SubscribeTx(ctx, 10, 30, "", nil)73	//c, err := client.SubscribeTx(ctx, 0, 4, "", nil)74	//c, err := client.SubscribeTx(ctx, 0, -1, "", []string{"1b70bb886c784a0587590da3a0af8fd336aa1a806be4431db31ceeba4a912f93"})75	//c, err := client.SubscribeTx(ctx, 0, -1, syscontract.SystemContract_CERT_MANAGE.String(), nil)76	if err != nil {77		log.Fatalln(err)78	}79	for {80		select {81		case txI, ok := <-c:82			if !ok {83				fmt.Println("chan is close!")84				return85			}86			if txI == nil {87				log.Fatalln("require not nil")88			}89			tx, ok := txI.(*common.Transaction)90			if !ok {91				log.Fatalln("require true")92			}93			fmt.Printf("recv tx [%s] => %+v\n", tx.Payload.TxId, tx)94			//if err := client.Stop(); err != nil {95			//	return96			//}97			//return98		case <-ctx.Done():99			return100		}101	}102}103func testSubscribeContractEvent(client *sdk.ChainClient) {104	ctx, cancel := context.WithCancel(context.Background())105	defer cancel()106	//è®¢éæå®åçº¦çåçº¦äºä»¶107	// 1. è·åææåå²+å®æ¶108	// c, err := client.SubscribeContractEvent(ctx, 0, -1, "claim005", "topic_vx")109	// 2. è·åå®æ¶110	//c, err := client.SubscribeContractEvent(ctx, -1, -1, "claim005", "topic_vx")111	// 3. è·åå®æ¶(å¼å®¹èçæ¬)112	//c, err := client.SubscribeContractEvent(ctx, 0, 0, "claim005", "topic_vx")113	// 4. è·ååå²å°æå®åå²é«åº¦114	//c, err := client.SubscribeContractEvent(ctx, 0, 10, "claim005", "topic_vx")115	// 5. è·ååå²å°æå®å®æ¶é«åº¦116	//c, err := client.SubscribeContractEvent(ctx, 0, 28, "claim005", "topic_vx")117	// 6. è·åå®æ¶ç´å°æå®é«åº¦118	//c, err := client.SubscribeContractEvent(ctx, -1, 25, "claim005", "topic_vx")119	// 7. è®¢éæætopic120	c, err := client.SubscribeContractEvent(ctx, 0, -1, "claim005", "")121	// 7. æ¥éï¼èµ·å§é«åº¦é«äºå½ååºåé«åº¦ï¼ç´æ¥éåº122	//c, err := client.SubscribeContractEvent(ctx, 25, 30, "claim005", "topic_vx")123	// 8. æ¥éï¼èµ·å§é«åº¦ä½äºç»æ¢é«åº¦124	//c, err := client.SubscribeContractEvent(ctx, 25, 20, "claim005", "topic_vx")125	// 9. æ¥éï¼èµ·å§é«åº¦/ç»æ¢é«åº¦ä½äº-1126	//c, err := client.SubscribeContractEvent(ctx, -2, 20, "claim005", "topic_vx")127	//c, err := client.SubscribeContractEvent(ctx, 0, 0, "claim005", "")128	//c, err := client.SubscribeContractEvent(ctx, "64f50d594c2a739c7088f9fc6785e1934030e17b52f1a894baec61b98633a59f", "9c01b4c21d1907ab27aa23343493b3c9872777e3")129	if err != nil {130		log.Fatalln(err)131	}132	for {133		select {134		case event, ok := <-c:135			if !ok {136				fmt.Println("chan is close!")137				return138			}139			if event == nil {140				log.Fatalln("require not nil")141			}142			contractEventInfo, ok := event.(*common.ContractEventInfo)...

Using AI Code Generation

1import (2func main() {3	c := cron.New()4	c.AddFunc("*/1 * * * * *", func() { fmt.Println("Every second") })5	c.Start()6	select {}7}

Using AI Code Generation

1import (2type Event struct {3	Subscribers []func(string)4}5func (e *Event) Subscribe(subscriber func(string)) {6	e.Subscribers = append(e.Subscribers, subscriber)7}8func (e *Event) Publish(msg string) {9	for _, subscriber := range e.Subscribers {10		subscriber(msg)11	}12}13func main() {14	e := new(Event)15	e.Subscribe(func(msg string) {16		fmt.Println("Subscriber 1:", msg)17	})18	e.Subscribe(func(msg string) {19		fmt.Println("Subscriber 2:", msg)20	})21	e.Publish("Hello")22}

Using AI Code Generation

1import (2type Event struct {3	Subscribers []func(interface{})4}5func (e *Event) Subscribe(sub func(interface{})) {6	e.Subscribers = append(e.Subscribers, sub)7}8func (e *Event) Publish(data interface{}) {9	for _, sub := range e.Subscribers {10		sub(data)11	}12}13func main() {14	e := &Event{}15	e.Subscribe(func(data interface{}) {16		fmt.Println("Subscriber 1:", data)17	})18	e.Subscribe(func(data interface{}) {19		fmt.Println("Subscriber 2:", data)20	})21	e.Publish("Hello World")22}23import (24type Event struct {25	Subscribers []func(interface{})26}27func (e *Event) Subscribe(sub func(interface{})) {28	e.Subscribers = append(e.Subscribers, sub)29}30func (e *Event) Publish(data interface{}) {31	for _, sub := range e.Subscribers {32		sub(data)33	}34}35type Subscriber struct {36}37func (s *Subscriber) HandleEvent(data interface{}) {38	fmt.Println("Subscriber:", s.Name, "Data:", data)39}40func main() {41	e := &Event{}42	s1 := &Subscriber{Name: "S1"}43	s2 := &Subscriber{Name: "S2"}44	e.Subscribe(s1.HandleEvent)45	e.Subscribe(s2.HandleEvent)46	e.Publish("Hello World")47}48import (49type Event struct {50	Subscribers []func(interface{})51}52func (e *Event) Subscribe(sub func(interface{})) {53	e.Subscribers = append(e.Subscribers, sub)54}55func (e *Event) Publish(data interface{}) {56	for _, sub := range e.Subscribers {57		sub(data)58	}59}60type Subscriber struct {61}62func (s *Subscriber) HandleEvent(data interface{}) {63	fmt.Println("Subscriber:", s.Name, "Data:", data)64}65func main() {66	e := &Event{}

Using AI Code Generation

1import (2func main() {3	event := NewEvent()4	event.Subscribe("test", func() {5		fmt.Println("test")6	})7	event.Subscribe("test", func() {8		fmt.Println("test")9	})10	event.Publish("test")11}12type Event struct {13}14func NewEvent() *Event {15	return &Event{16		events: make(map[string][]reflect.Value),17	}18}19func (e *Event) Subscribe(name string, fn interface{}) {20	e.events[name] = append(e.events[name], reflect.ValueOf(fn))21}22func (e *Event) Publish(name string) {23	for _, fn := range e.events[name] {24		fn.Call([]reflect.Value{})25	}26}

Using AI Code Generation

1import "fmt"2func main() {3    e := event.NewEvent()4    s := event.NewSubscriber()5    e.Subscribe(s)6    e.Publish("Hello World")7}8import "fmt"9func main() {10    e := event.NewEvent()11    s := event.NewSubscriber()12    e.Subscribe(s)13    e.Publish("Hello World")14}15import "fmt"16func main() {17    e := event.NewEvent()18    s := event.NewSubscriber()19    e.Subscribe(s)20    e.Publish("Hello World")21}22import "fmt"23func main() {24    e := event.NewEvent()25    s := event.NewSubscriber()26    e.Subscribe(s)27    e.Publish("Hello World")28}29import "fmt"30func main() {31    e := event.NewEvent()32    s := event.NewSubscriber()33    e.Subscribe(s)34    e.Publish("Hello World")35}36import "fmt"37func main() {38    e := event.NewEvent()

Using AI Code Generation

1import (2func main() {3	e := NewEvent()4	e.Subscribe(func() {5		fmt.Println("Hello World")6	})7	e.Publish()8	time.Sleep(time.Second)9}10import (11func main() {12	e := NewEvent()13	e.Subscribe(func() {14		fmt.Println("Hello World")15	})16	e.Publish()17	time.Sleep(time.Second)18}19type Event struct {20	subscribers []func()21}22func NewEvent() *Event {23	return &Event{}24}25func (e *Event) Subscribe(f func()) {26	e.subscribers = append(e.subscribers, f)27}28func (e *Event) Publish() {29	for _, f := range e.subscribers {30		f()31	}32}33import (34func main() {35	e := NewEvent()36	e.Subscribe(func() {37		fmt.Println("Hello World")38	})39	e.Subscribe(func() {40		fmt.Println("Hello Go")41	})42	e.Publish()43	time.Sleep(time.Second)44}45type Event struct {46	subscribers []func()47}48func NewEvent() *Event {49	return &Event{}50}51func (e *Event) Subscribe(f func()) {52	e.subscribers = append(e.subscribers, f)53}54func (e *Event) Publish() {55	for _, f := range e.subscribers {56		f()57	}58}59import (60func main() {61	e := NewEvent()62	e.Subscribe(func() {63		fmt.Println("Hello World")64	})

Using AI Code Generation

1import "fmt"2import "time"3type Event struct {4    Data interface{}5}6type EventListener struct {7}8func (e *EventListener) Subscribe() {9    e.Events = make(chan *Event)10}11func (e *EventListener) Unsubscribe() {12    close(e.Events)13}14func (e *EventListener) Listen() {15    for {16        fmt.Println(event.Name)17    }18}19func main() {20    listener := EventListener{}21    listener.Subscribe()22    go listener.Listen()23    time.Sleep(time.Second)24    listener.Unsubscribe()25}26main.main()27listener.Events = make(chan *Event)28main.main()29listener.Unsubscribe()30main.main()31listener.Events <- &Event{Name: "test"}32main.main()

Using AI Code Generation

1import (2type Event struct {3	subscribers []interface{}4}5func (e *Event) Subscribe(f interface{}) {6	e.subscribers = append(e.subscribers, f)7}8func (e *Event) Unsubscribe(f interface{}) {9	for i, s := range e.subscribers {10		if s == f {11			e.subscribers = append(e.subscribers[:i], e.subscribers[i+1:]...)12		}13	}14}15func (e *Event) Publish(params ...interface{}) {16	for _, s := range e.subscribers {17		f := reflect.ValueOf(s)18		in := make([]reflect.Value, len(params))19		for k, param := range params {20			in[k] = reflect.ValueOf(param)21		}22		f.Call(in)23	}24}25var event = Event{}26func subscriber1(name string, age int) {27	fmt.Println("Subscriber 1 called with name", name, "and age", age)28}29func subscriber2(name string, age int) {30	fmt.Println("Subscriber 2 called with name", name, "and age", age)31}32func main() {33	event.Subscribe(subscriber1)34	event.Subscribe(subscriber2)35	event.Publish("John", 25)36	event.Unsubscribe(subscriber1)37	event.Publish("Mary", 30)38}39import (40type Event struct {

Using AI Code Generation

1import (2func main() {3e := events.New()4e.Subscribe("event", func() {5fmt.Println("Hello world")6})7e.Call("event")8}9import (10func main() {11e := events.New()12e.Subscribe("event", func() {13fmt.Println("Hello world")14})15e.Call("event")16}17import (18func main() {19e := events.New()20e.Subscribe("event", func() {21fmt.Println("Hello world")22})23e.Call("event")24}25import (26func main() {27e := events.New()28e.Subscribe("event", func() {29fmt.Println("Hello world")30})31e.Call("event")32}33import (34func main() {35e := events.New()36e.Subscribe("event", func() {37fmt.Println("Hello world")38})39e.Call("event")40}41import (42func main() {43e := events.New()44e.Subscribe("event", func() {45fmt.Println("Hello world")46})47e.Call("event")48}

Automation Testing Tutorials

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