Golang http_api.NegotiateV1函数代码示例

func TestTombstoneRecover(t *testing.T) {
	opts := NewNSQLookupdOptions()
	opts.Logger = newTestLogger(t)
	opts.TombstoneLifetime = 50 * time.Millisecond
	tcpAddr, httpAddr, nsqlookupd := mustStartLookupd(opts)
	defer nsqlookupd.Exit()

	topicName := "tombstone_recover"
	topicName2 := topicName + "2"

	conn := mustConnectLookupd(t, tcpAddr)
	defer conn.Close()

	identify(t, conn, "ip.address", 5000, 5555, "fake-version")

	nsq.Register(topicName, "channel1").WriteTo(conn)
	_, err := nsq.ReadResponse(conn)
	equal(t, err, nil)

	nsq.Register(topicName2, "channel2").WriteTo(conn)
	_, err = nsq.ReadResponse(conn)
	equal(t, err, nil)

	endpoint := fmt.Sprintf("http://%s/topic/tombstone?topic=%s&node=%s",
		httpAddr, topicName, "ip.address:5555")
	_, err = http_api.NegotiateV1("POST", endpoint, nil)
	equal(t, err, nil)

	endpoint = fmt.Sprintf("http://%s/lookup?topic=%s", httpAddr, topicName)
	data, err := http_api.NegotiateV1("GET", endpoint, nil)
	equal(t, err, nil)
	producers, _ := data.Get("producers").Array()
	equal(t, len(producers), 0)

	endpoint = fmt.Sprintf("http://%s/lookup?topic=%s", httpAddr, topicName2)
	data, err = http_api.NegotiateV1("GET", endpoint, nil)
	equal(t, err, nil)
	producers, _ = data.Get("producers").Array()
	equal(t, len(producers), 1)

	time.Sleep(75 * time.Millisecond)

	endpoint = fmt.Sprintf("http://%s/lookup?topic=%s", httpAddr, topicName)
	data, err = http_api.NegotiateV1("GET", endpoint, nil)
	equal(t, err, nil)
	producers, _ = data.Get("producers").Array()
	equal(t, len(producers), 1)
}

func API(endpoint string) (data *simplejson.Json, err error) {
	d := make(map[string]interface{})
	err = http_api.NegotiateV1(endpoint, &d)
	data = simplejson.New()
	data.SetPath(nil, d)
	return
}

// GetLookupdTopicChannels returns a []string containing a union of the channels
// from all the given lookupd for the given topic
func GetLookupdTopicChannels(topic string, lookupdHTTPAddrs []string) ([]string, error) {
	success := false
	var allChannels []string
	var lock sync.Mutex
	var wg sync.WaitGroup
	for _, addr := range lookupdHTTPAddrs {
		wg.Add(1)
		endpoint := fmt.Sprintf("http://%s/channels?topic=%s", addr, url.QueryEscape(topic))
		log.Printf("LOOKUPD: querying %s", endpoint)
		go func(endpoint string) {
			data, err := http_api.NegotiateV1("GET", endpoint, nil)
			lock.Lock()
			defer lock.Unlock()
			defer wg.Done()
			if err != nil {
				log.Printf("ERROR: lookupd %s - %s", endpoint, err.Error())
				return
			}
			success = true
			// {"data":{"channels":["test"]}}
			channels, _ := data.Get("channels").StringArray()
			allChannels = stringy.Union(allChannels, channels)
		}(endpoint)
	}
	wg.Wait()
	sort.Strings(allChannels)
	if success == false {
		return nil, errors.New("unable to query any lookupd")
	}
	return allChannels, nil
}

// GetNSQDTopics returns a []string containing all the topics
// produced by the given nsqd
func GetNSQDTopics(nsqdHTTPAddrs []string) ([]string, error) {
	var topics []string
	var lock sync.Mutex
	var wg sync.WaitGroup
	success := false
	for _, addr := range nsqdHTTPAddrs {
		wg.Add(1)
		endpoint := fmt.Sprintf("http://%s/stats?format=json", addr)
		log.Printf("NSQD: querying %s", endpoint)

		go func(endpoint string) {
			data, err := http_api.NegotiateV1("GET", endpoint, nil)
			lock.Lock()
			defer lock.Unlock()
			defer wg.Done()
			if err != nil {
				log.Printf("ERROR: lookupd %s - %s", endpoint, err.Error())
				return
			}
			success = true
			topicList, _ := data.Get("topics").Array()
			for i := range topicList {
				topicInfo := data.Get("topics").GetIndex(i)
				topics = stringy.Add(topics, topicInfo.Get("topic_name").MustString())
			}
		}(endpoint)
	}
	wg.Wait()
	sort.Strings(topics)
	if success == false {
		return nil, errors.New("unable to query any nsqd")
	}
	return topics, nil
}

// GetLookupdProducers returns a ProducerList metadata for each node connected to the given lookupds
func (c *ClusterInfo) GetLookupdProducers(lookupdHTTPAddrs []string) (ProducerList, error) {
	var success bool
	var output []*Producer
	var lock sync.Mutex
	var wg sync.WaitGroup

	allProducers := make(map[string]*Producer)
	maxVersion, _ := semver.Parse("0.0.0")

	type respType struct {
		Producers []*Producer `json:"producers"`
	}

	for _, addr := range lookupdHTTPAddrs {
		wg.Add(1)
		endpoint := fmt.Sprintf("http://%s/nodes", addr)
		c.logf("LOOKUPD: querying %s", endpoint)
		go func(addr string, endpoint string) {
			defer wg.Done()

			var resp respType
			err := http_api.NegotiateV1(endpoint, &resp)
			if err != nil {
				c.logf("ERROR: lookupd %s - %s", endpoint, err)
				return
			}

			lock.Lock()
			defer lock.Unlock()
			success = true
			for _, producer := range resp.Producers {
				key := producer.TCPAddress()
				p, ok := allProducers[key]
				if !ok {
					if maxVersion.LT(producer.VersionObj) {
						maxVersion = producer.VersionObj
					}
					sort.Sort(producer.Topics)
					p = producer
					allProducers[key] = p
					output = append(output, p)
				}
				p.RemoteAddresses = append(p.RemoteAddresses, fmt.Sprintf("%s/%s", addr, producer.Address()))
			}
		}(addr, endpoint)
	}
	wg.Wait()

	if success == false {
		return nil, errors.New("unable to query any lookupd")
	}

	for _, producer := range allProducers {
		if producer.VersionObj.LT(maxVersion) {
			producer.OutOfDate = true
		}
	}
	sort.Sort(ProducersByHost{output})
	return output, nil
}

func (s *httpServer) deleteChannelHandler(w http.ResponseWriter, req *http.Request) {
	if req.Method != "POST" {
		s.ctx.nsqadmin.logf("ERROR: invalid %s to POST only method", req.Method)
		http.Error(w, "INVALID_REQUEST", 500)
		return
	}
	reqParams := &http_api.PostParams{req}

	topicName, channelName, err := http_api.GetTopicChannelArgs(reqParams)
	if err != nil {
		http.Error(w, err.Error(), 500)
		return
	}

	rd, _ := reqParams.Get("rd")
	if !strings.HasPrefix(rd, "/") {
		rd = fmt.Sprintf("/topic/%s", url.QueryEscape(topicName))
	}

	for _, addr := range s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses {
		nsqlookupdVersion, err := lookupd.GetVersion(addr)
		if err != nil {
			s.ctx.nsqadmin.logf("ERROR: failed to get nsqlookupd %s version - %s", addr, err)
		}

		uri := "delete_channel"
		if !nsqlookupdVersion.LT(v1EndpointVersion) {
			uri = "channel/delete"
		}

		endpoint := fmt.Sprintf("http://%s/%s?topic=%s&channel=%s",
			addr, uri,
			url.QueryEscape(topicName),
			url.QueryEscape(channelName))
		s.ctx.nsqadmin.logf("LOOKUPD: querying %s", endpoint)
		_, err = http_api.NegotiateV1("POST", endpoint, nil)
		if err != nil {
			s.ctx.nsqadmin.logf("ERROR: lookupd %s - %s", endpoint, err)
			continue
		}
	}

	producerAddrs := s.getProducers(topicName)
	s.performVersionNegotiatedRequestsToNSQD(
		s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses,
		producerAddrs,
		"delete_channel",
		"channel/delete",
		fmt.Sprintf("topic=%s&channel=%s",
			url.QueryEscape(topicName), url.QueryEscape(channelName)))

	s.notifyAdminAction("delete_channel", topicName, channelName, "", req)

	http.Redirect(w, req, rd, 302)
}

func (s *httpServer) deleteTopicHandler(w http.ResponseWriter, req *http.Request) {
	if req.Method != "POST" {
		s.ctx.nsqadmin.logf("ERROR: invalid %s to POST only method", req.Method)
		http.Error(w, "INVALID_REQUEST", 500)
		return
	}
	reqParams := &http_api.PostParams{req}

	topicName, err := reqParams.Get("topic")
	if err != nil {
		http.Error(w, "MISSING_ARG_TOPIC", 500)
		return
	}

	rd, _ := reqParams.Get("rd")
	if !strings.HasPrefix(rd, "/") {
		rd = "/"
	}

	// for topic removal, you need to get all the producers *first*
	producerAddrs := s.getProducers(topicName)

	// remove the topic from all the lookupds
	for _, addr := range s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses {
		nsqlookupdVersion, err := lookupd.GetVersion(addr)
		if err != nil {
			s.ctx.nsqadmin.logf("ERROR: failed to get nsqlookupd %s version - %s", addr, err)
		}

		uri := "delete_topic"
		if !nsqlookupdVersion.LT(v1EndpointVersion) {
			uri = "topic/delete"
		}

		endpoint := fmt.Sprintf("http://%s/%s?topic=%s", addr, uri, url.QueryEscape(topicName))
		s.ctx.nsqadmin.logf("LOOKUPD: querying %s", endpoint)
		_, err = http_api.NegotiateV1("POST", endpoint, nil)
		if err != nil {
			s.ctx.nsqadmin.logf("ERROR: lookupd %s - %s", endpoint, err)
			continue
		}
	}

	s.performVersionNegotiatedRequestsToNSQD(
		s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses,
		producerAddrs,
		"delete_topic",
		"topic/delete",
		fmt.Sprintf("topic=%s", url.QueryEscape(topicName)))

	s.notifyAdminAction("delete_topic", topicName, "", "", req)

	http.Redirect(w, req, rd, 302)
}

// GetVersion returns a semver.Version object by querying /info
func GetVersion(addr string) (semver.Version, error) {
	endpoint := fmt.Sprintf("http://%s/info", addr)
	log.Printf("version negotiation %s", endpoint)
	info, err := http_api.NegotiateV1("GET", endpoint, nil)
	if err != nil {
		log.Printf("ERROR: %s - %s", endpoint, err)
		return semver.Version{}, err
	}
	version := info.Get("version").MustString("unknown")
	return semver.Parse(version)
}

func TestChannelUnregister(t *testing.T) {
	opts := NewNSQLookupdOptions()
	opts.Logger = newTestLogger(t)
	tcpAddr, httpAddr, nsqlookupd := mustStartLookupd(opts)
	defer nsqlookupd.Exit()

	topics := nsqlookupd.DB.FindRegistrations("topic", "*", "*")
	equal(t, len(topics), 0)

	topicName := "channel_unregister"

	conn := mustConnectLookupd(t, tcpAddr)
	defer conn.Close()

	tcpPort := 5000
	httpPort := 5555
	identify(t, conn, "ip.address", tcpPort, httpPort, "fake-version")

	nsq.Register(topicName, "ch1").WriteTo(conn)
	v, err := nsq.ReadResponse(conn)
	equal(t, err, nil)
	equal(t, v, []byte("OK"))

	topics = nsqlookupd.DB.FindRegistrations("topic", topicName, "")
	equal(t, len(topics), 1)

	channels := nsqlookupd.DB.FindRegistrations("channel", topicName, "*")
	equal(t, len(channels), 1)

	nsq.UnRegister(topicName, "ch1").WriteTo(conn)
	v, err = nsq.ReadResponse(conn)
	equal(t, err, nil)
	equal(t, v, []byte("OK"))

	topics = nsqlookupd.DB.FindRegistrations("topic", topicName, "")
	equal(t, len(topics), 1)

	// we should still have mention of the topic even though there is no producer
	// (ie. we haven't *deleted* the channel, just unregistered as a producer)
	channels = nsqlookupd.DB.FindRegistrations("channel", topicName, "*")
	equal(t, len(channels), 1)

	endpoint := fmt.Sprintf("http://%s/lookup?topic=%s", httpAddr, topicName)
	data, err := http_api.NegotiateV1("GET", endpoint, nil)
	equal(t, err, nil)
	returnedProducers, err := data.Get("producers").Array()
	equal(t, err, nil)
	equal(t, len(returnedProducers), 1)
}

// GetVersion returns a semver.Version object by querying /info
func (c *ClusterInfo) GetVersion(addr string) (semver.Version, error) {
	endpoint := fmt.Sprintf("http://%s/info", addr)
	c.logf("version negotiation %s", endpoint)
	var resp struct {
		Version string `json:'version'`
	}
	err := http_api.NegotiateV1(endpoint, &resp)
	if err != nil {
		c.logf("ERROR: %s - %s", endpoint, err)
		return semver.Version{}, err
	}
	if resp.Version == "" {
		resp.Version = "unknown"
	}
	return semver.Parse(resp.Version)
}

// GetNSQDTopicProducers returns a []string containing the addresses of all the nsqd
// that produce the given topic out of the given nsqd
func (c *ClusterInfo) GetNSQDTopicProducers(topic string, nsqdHTTPAddrs []string) ([]string, error) {
	var addresses []string
	var lock sync.Mutex
	var wg sync.WaitGroup
	success := false

	type respType struct {
		Topics []struct {
			Name string `json:"topic_name"`
		} `json:"topics"`
	}

	for _, addr := range nsqdHTTPAddrs {
		wg.Add(1)
		endpoint := fmt.Sprintf("http://%s/stats?format=json", addr)
		c.logf("NSQD: querying %s", endpoint)

		go func(endpoint, addr string) {
			defer wg.Done()

			var resp respType
			err := http_api.NegotiateV1(endpoint, &resp)
			lock.Lock()
			defer lock.Unlock()
			if err != nil {
				c.logf("ERROR: nsqd %s - %s", endpoint, err.Error())
				return
			}
			success = true

			for _, t := range resp.Topics {
				if t.Name == topic {
					addresses = append(addresses, addr)
					return
				}
			}
		}(endpoint, addr)
	}
	wg.Wait()
	if success == false {
		return nil, errors.New("unable to query any nsqd")
	}
	return addresses, nil
}

func TestClientAttributes(t *testing.T) {
	userAgent := "Test User Agent"

	opts := NewOptions()
	opts.Logger = newTestLogger(t)
	opts.Verbose = true
	opts.SnappyEnabled = true
	tcpAddr, httpAddr, nsqd := mustStartNSQD(opts)
	defer os.RemoveAll(opts.DataPath)
	defer nsqd.Exit()

	conn, err := mustConnectNSQD(tcpAddr)
	equal(t, err, nil)
	defer conn.Close()

	data := identify(t, conn, map[string]interface{}{
		"snappy":     true,
		"user_agent": userAgent,
	}, frameTypeResponse)
	resp := struct {
		Snappy    bool   `json:"snappy"`
		UserAgent string `json:"user_agent"`
	}{}
	err = json.Unmarshal(data, &resp)
	equal(t, err, nil)
	equal(t, resp.Snappy, true)

	r := snappystream.NewReader(conn, snappystream.SkipVerifyChecksum)
	w := snappystream.NewWriter(conn)
	readValidate(t, r, frameTypeResponse, "OK")

	topicName := "test_client_attributes" + strconv.Itoa(int(time.Now().Unix()))
	sub(t, readWriter{r, w}, topicName, "ch")

	testURL := fmt.Sprintf("http://127.0.0.1:%d/stats?format=json", httpAddr.Port)

	statsData, err := http_api.NegotiateV1("GET", testURL, nil)
	equal(t, err, nil)

	client := statsData.Get("topics").GetIndex(0).Get("channels").GetIndex(0).Get("clients").GetIndex(0)
	equal(t, client.Get("user_agent").MustString(), userAgent)
	equal(t, client.Get("snappy").MustBool(), true)
}

// GetNSQDTopics returns a []string containing all the topics produced by the given nsqd
func (c *ClusterInfo) GetNSQDTopics(nsqdHTTPAddrs []string) ([]string, error) {
	var success bool
	var topics []string
	var lock sync.Mutex
	var wg sync.WaitGroup

	type respType struct {
		Topics []struct {
			Name string `json:"topic_name"`
		} `json:"topics"`
	}

	for _, addr := range nsqdHTTPAddrs {
		wg.Add(1)
		endpoint := fmt.Sprintf("http://%s/stats?format=json", addr)
		c.logf("NSQD: querying %s", endpoint)
		go func(endpoint string) {
			defer wg.Done()

			var resp respType
			err := http_api.NegotiateV1(endpoint, &resp)
			if err != nil {
				c.logf("ERROR: lookupd %s - %s", endpoint, err)
				return
			}

			lock.Lock()
			defer lock.Unlock()
			success = true
			for _, topic := range resp.Topics {
				topics = stringy.Add(topics, topic.Name)
			}
		}(endpoint)
	}
	wg.Wait()

	if success == false {
		return nil, errors.New("unable to query any nsqd")
	}

	sort.Strings(topics)
	return topics, nil
}

// GetLookupdTopics returns a []string containing a union of all the topics
// from all the given lookupd
func (c *ClusterInfo) GetLookupdTopics(lookupdHTTPAddrs []string) ([]string, error) {
	var success bool
	var allTopics []string
	var lock sync.Mutex
	var wg sync.WaitGroup

	type respType struct {
		Topics []string `json:"topics"`
	}

	for _, addr := range lookupdHTTPAddrs {
		wg.Add(1)
		endpoint := fmt.Sprintf("http://%s/topics", addr)
		c.logf("LOOKUPD: querying %s", endpoint)
		go func(endpoint string) {
			defer wg.Done()

			var resp respType
			err := http_api.NegotiateV1(endpoint, &resp)
			if err != nil {
				c.logf("ERROR: lookupd %s - %s", endpoint, err)
				return
			}

			lock.Lock()
			defer lock.Unlock()
			success = true
			allTopics = append(allTopics, resp.Topics...)
		}(endpoint)
	}
	wg.Wait()

	if success == false {
		return nil, errors.New("unable to query any lookupd")
	}

	allTopics = stringy.Uniq(allTopics)
	sort.Strings(allTopics)
	return allTopics, nil
}

// GetLookupdTopicProducers returns a []string of the broadcast_address:http_port of all the
// producers for a given topic by unioning the results returned from the given lookupd
func (c *ClusterInfo) GetLookupdTopicProducers(topic string, lookupdHTTPAddrs []string) ([]string, error) {
	success := false
	var allSources []string
	var lock sync.Mutex
	var wg sync.WaitGroup

	type respType struct {
		Producers []Producer `json:"producers"`
	}

	for _, addr := range lookupdHTTPAddrs {
		wg.Add(1)

		endpoint := fmt.Sprintf("http://%s/lookup?topic=%s", addr, url.QueryEscape(topic))
		c.logf("LOOKUPD: querying %s", endpoint)

		go func(endpoint string) {
			defer wg.Done()

			var resp respType
			err := http_api.NegotiateV1(endpoint, &resp)
			lock.Lock()
			defer lock.Unlock()
			if err != nil {
				c.logf("ERROR: lookupd %s - %s", endpoint, err.Error())
				return
			}
			success = true

			for _, producer := range resp.Producers {
				allSources = stringy.Add(allSources, producer.HTTPAddress())
			}
		}(endpoint)
	}
	wg.Wait()
	if success == false {
		return nil, errors.New("unable to query any lookupd")
	}
	return allSources, nil
}