VictoriaMetrics/lib/ingestserver/opentsdbhttp/server.go
Nikolay ebebaecd94
lib/netutil: init implimentation of proxy protocol ()
* lib/netutil: init implimentation of proxy protocol
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3335

* wip

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2023-01-26 23:25:22 -08:00

105 lines
3.0 KiB
Go

package opentsdbhttp
import (
"context"
"net"
"net/http"
"sync"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
"github.com/VictoriaMetrics/metrics"
)
var (
writeRequests = metrics.NewCounter(`vm_ingestserver_requests_total{type="opentsdbhttp", name="write", net="tcp"}`)
writeErrors = metrics.NewCounter(`vm_ingestserver_request_errors_total{type="opentsdbhttp", name="write", net="tcp"}`)
)
// Server represents HTTP OpenTSDB server.
type Server struct {
s *http.Server
ln net.Listener
wg sync.WaitGroup
}
// MustStart starts HTTP OpenTSDB server on the given addr.
//
// If useProxyProtocol is set to true, then the incoming connections are accepted via proxy protocol.
// See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
//
// MustStop must be called on the returned server when it is no longer needed.
func MustStart(addr string, useProxyProtocol bool, insertHandler func(r *http.Request) error) *Server {
logger.Infof("starting HTTP OpenTSDB server at %q", addr)
lnTCP, err := netutil.NewTCPListener("opentsdbhttp", addr, useProxyProtocol, nil)
if err != nil {
logger.Fatalf("cannot start HTTP OpenTSDB collector at %q: %s", addr, err)
}
return MustServe(lnTCP, insertHandler)
}
// MustServe serves OpenTSDB HTTP put requests from ln.
//
// MustStop must be called on the returned server when it is no longer needed.
func MustServe(ln net.Listener, insertHandler func(r *http.Request) error) *Server {
h := newRequestHandler(insertHandler)
hs := &http.Server{
Handler: h,
ReadHeaderTimeout: 5 * time.Second,
IdleTimeout: time.Minute,
// Do not set ReadTimeout and WriteTimeout here,
// since these timeouts must be controlled by request handler.
}
s := &Server{
s: hs,
ln: ln,
}
s.wg.Add(1)
go func() {
defer s.wg.Done()
err := s.s.Serve(s.ln)
if err == http.ErrServerClosed {
return
}
if err != nil {
logger.Fatalf("error serving HTTP OpenTSDB at %q: %s", s.ln.Addr(), err)
}
}()
return s
}
// Wait waits until the server is stopped with MustStop.
func (s *Server) Wait() {
s.wg.Wait()
}
// MustStop stops HTTP OpenTSDB server.
func (s *Server) MustStop() {
logger.Infof("stopping HTTP OpenTSDB server at %q...", s.ln.Addr())
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := s.s.Shutdown(ctx); err != nil {
logger.Fatalf("cannot close HTTP OpenTSDB server at %q: %s", s.ln.Addr(), err)
}
s.wg.Wait()
logger.Infof("OpenTSDB HTTP server at %q has been stopped", s.ln.Addr())
}
func newRequestHandler(insertHandler func(r *http.Request) error) http.Handler {
rh := func(w http.ResponseWriter, r *http.Request) {
if !httpserver.CheckBasicAuth(w, r) {
return
}
writeRequests.Inc()
if err := insertHandler(r); err != nil {
writeErrors.Inc()
httpserver.Errorf(w, r, "%s", err)
return
}
w.WriteHeader(http.StatusNoContent)
}
return http.HandlerFunc(rh)
}