func (s *httpServer) indexHandler(w http.ResponseWriter, req *http.Request) {
reqParams, err := http_api.NewReqParams(req)
if err != nil {
s.ctx.nsqadmin.logf("ERROR: failed to parse request params - %s", err)
http.Error(w, "INVALID_REQUEST", 500)
return
}
var topics []string
if len(s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses) != 0 {
topics, _ = lookupd.GetLookupdTopics(s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
} else {
topics, _ = lookupd.GetNSQDTopics(s.ctx.nsqadmin.opts.NSQDHTTPAddresses)
}
p := struct {
Title string
GraphOptions *GraphOptions
Topics Topics
Version string
}{
Title: "NSQ",
GraphOptions: NewGraphOptions(w, req, reqParams, s.ctx),
Topics: TopicsFromStrings(topics),
Version: version.Binary,
}
err = templates.T.ExecuteTemplate(w, "index.html", p)
if err != nil {
s.ctx.nsqadmin.logf("Template Error %s", err)
http.Error(w, "Template Error", 500)
}
}
func (s *httpServer) indexHandler(w http.ResponseWriter, req *http.Request, ps httprouter.Params) (interface{}, error) {
reqParams, err := http_api.NewReqParams(req)
if err != nil {
return nil, http_api.Err{400, "INVALID_REQUEST"}
}
var topics []string
if len(s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses) != 0 {
topics, _ = lookupd.GetLookupdTopics(s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
} else {
topics, _ = lookupd.GetNSQDTopics(s.ctx.nsqadmin.opts.NSQDHTTPAddresses)
}
p := struct {
Title string
GraphOptions *GraphOptions
Topics Topics
Version string
}{
Title: "NSQ",
GraphOptions: NewGraphOptions(w, req, reqParams, s.ctx),
Topics: TopicsFromStrings(topics),
Version: version.Binary,
}
err = templates.T.ExecuteTemplate(w, "index.html", p)
if err != nil {
s.ctx.nsqadmin.logf("ERROR: executing template - %s", err)
return nil, http_api.Err{500, "INTERNAL_ERROR"}
}
return nil, nil
}
func (t *TopicDiscoverer) syncTopics(addrs []string, pattern string) {
newTopics, err := lookupd.GetLookupdTopics(addrs)
if err != nil {
log.Printf("ERROR: could not retrieve topic list: %s", err)
}
for _, topic := range newTopics {
if _, ok := t.topics[topic]; !ok {
if !t.allowTopicName(pattern, topic) {
log.Println("Skipping topic ", topic, "as it didn't match required pattern:", pattern)
continue
}
logger, err := newConsumerFileLogger(topic)
if err != nil {
log.Printf("ERROR: couldn't create logger for new topic %s: %s", topic, err)
continue
}
t.topics[topic] = logger
go t.startTopicRouter(logger)
}
}
}
func (s *httpServer) lookupHandler(w http.ResponseWriter, req *http.Request) {
reqParams, err := http_api.NewReqParams(req)
if err != nil {
s.ctx.nsqadmin.logf("ERROR: failed to parse request params - %s", err)
http.Error(w, "INVALID_REQUEST", 500)
return
}
channels := make(map[string][]string)
allTopics, _ := lookupd.GetLookupdTopics(s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
for _, topicName := range allTopics {
var producers []string
producers, _ = lookupd.GetLookupdTopicProducers(topicName, s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
if len(producers) == 0 {
topicChannels, _ := lookupd.GetLookupdTopicChannels(topicName, s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses)
channels[topicName] = topicChannels
}
}
p := struct {
Title string
GraphOptions *GraphOptions
TopicMap map[string][]string
Lookupd []string
Version string
}{
Title: "NSQ Lookup",
GraphOptions: NewGraphOptions(w, req, reqParams, s.ctx),
TopicMap: channels,
Lookupd: s.ctx.nsqadmin.opts.NSQLookupdHTTPAddresses,
Version: version.Binary,
}
err = templates.T.ExecuteTemplate(w, "lookup.html", p)
if err != nil {
s.ctx.nsqadmin.logf("Template Error %s", err)
http.Error(w, "Template Error", 500)
}
}
func main() {
flag.Parse()
if *showVersion {
fmt.Printf("nsq_to_file v%s\n", version.Binary)
return
}
if *channel == "" {
log.Fatal("--channel is required")
}
var topicsFromNSQLookupd bool
if len(nsqdTCPAddrs) == 0 && len(lookupdHTTPAddrs) == 0 {
log.Fatal("--nsqd-tcp-address or --lookupd-http-address required.")
}
if len(nsqdTCPAddrs) != 0 && len(lookupdHTTPAddrs) != 0 {
log.Fatal("use --nsqd-tcp-address or --lookupd-http-address not both")
}
if *gzipLevel < 1 || *gzipLevel > 9 {
log.Fatalf("invalid --gzip-level value (%d), should be 1-9", *gzipLevel)
}
// TODO: remove, deprecated
if hasArg("gzip-compression") {
log.Printf("WARNING: --gzip-compression is deprecated in favor of --gzip-level")
switch *gzipCompression {
case 1:
*gzipLevel = gzip.BestSpeed
case 2:
*gzipLevel = gzip.BestCompression
case 3:
*gzipLevel = gzip.DefaultCompression
default:
log.Fatalf("invalid --gzip-compression value (%d), should be 1,2,3", *gzipCompression)
}
}
discoverer := newTopicDiscoverer()
signal.Notify(discoverer.hupChan, syscall.SIGHUP)
signal.Notify(discoverer.termChan, syscall.SIGINT, syscall.SIGTERM)
if len(topics) < 1 {
if len(lookupdHTTPAddrs) < 1 {
log.Fatal("use --topic to list at least one topic to subscribe to or specify at least one --lookupd-http-address to subscribe to all its topics")
}
topicsFromNSQLookupd = true
var err error
topics, err = lookupd.GetLookupdTopics(lookupdHTTPAddrs)
if err != nil {
log.Fatalf("ERROR: could not retrieve topic list: %s", err)
}
}
for _, topic := range topics {
if !discoverer.allowTopicName(*topicPattern, topic) {
log.Println("Skipping topic", topic, "as it didn't match required pattern:", *topicPattern)
continue
}
logger, err := newConsumerFileLogger(topic)
if err != nil {
log.Fatalf("ERROR: couldn't create logger for topic %s: %s", topic, err)
}
discoverer.topics[topic] = logger
go discoverer.startTopicRouter(logger)
}
discoverer.watch(lookupdHTTPAddrs, topicsFromNSQLookupd, *topicPattern)
}