// GetNSQDTopics returns a []string containing all the topics produced by the given nsqd
func (c *ClusterInfo) GetNSQDTopics(nsqdHTTPAddrs []string) ([]string, error) {
var topics []string
var lock sync.Mutex
var wg sync.WaitGroup
var errs []error
type respType struct {
Topics []struct {
Name string `json:"topic_name"`
} `json:"topics"`
}
for _, addr := range nsqdHTTPAddrs {
wg.Add(1)
go func(addr string) {
defer wg.Done()
endpoint := fmt.Sprintf("http://%s/stats?format=json", addr)
c.logf("CI: querying nsqd %s", endpoint)
var resp respType
err := c.client.NegotiateV1(endpoint, &resp)
if err != nil {
lock.Lock()
errs = append(errs, err)
lock.Unlock()
return
}
lock.Lock()
defer lock.Unlock()
for _, topic := range resp.Topics {
topics = stringy.Add(topics, topic.Name)
}
}(addr)
}
wg.Wait()
if len(errs) == len(nsqdHTTPAddrs) {
return nil, fmt.Errorf("Failed to query any nsqd: %s", ErrList(errs))
}
sort.Strings(topics)
if len(errs) > 0 {
return topics, ErrList(errs)
}
return topics, nil
}
// 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 := c.client.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
}