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Apply shutdown timeout to http server to limit reload delay #14339

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merged 5 commits into from
Oct 15, 2024
Merged

Apply shutdown timeout to http server to limit reload delay #14339

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ed864d5
Apply shutdown timeout to http server to limit reload delay
carsonip Oct 11, 2024
a700622
GracefulStop first
carsonip Oct 11, 2024
21d0f48
Add changelog
carsonip Oct 11, 2024
d38d5d4
Merge branch 'main' into limit-reload-delay
carsonip Oct 14, 2024
89af8df
Merge branch 'main' into limit-reload-delay
carsonip Oct 15, 2024
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1 change: 1 addition & 0 deletions changelogs/head.asciidoc
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ https://github.com/elastic/apm-server/compare/8.15\...main[View commits]

- Track all bulk request response status codes {pull}13574[13574]
- Fix a concurrent map write panic in monitoring middleware {pull}14335[14335]
- Apply shutdown timeout to http server {pull}14339[14339]

[float]
==== Breaking Changes
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4 changes: 2 additions & 2 deletions internal/beater/http.go
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Expand Up @@ -106,9 +106,9 @@ func (h *httpServer) start() error {
return h.Serve(h.httpListener)
}

func (h *httpServer) stop() {
func (h *httpServer) stop(ctx context.Context) {
h.logger.Infof("Stop listening on: %s", h.Server.Addr)
if err := h.Shutdown(context.Background()); err != nil {
if err := h.Shutdown(ctx); err != nil {
h.logger.Errorf("error stopping http server: %s", err.Error())
if err := h.Close(); err != nil {
h.logger.Errorf("error closing http server: %s", err.Error())
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7 changes: 3 additions & 4 deletions internal/beater/server.go
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Expand Up @@ -222,11 +222,10 @@ func (s server) run(ctx context.Context) error {
})
g.Go(func() error {
<-ctx.Done()
// httpServer should stop before grpcServer to avoid a panic caused by placing a new connection into
// a closed grpc connection channel during shutdown.
// See https://github.com/elastic/gmux/issues/13
s.httpServer.stop()
s.grpcServer.GracefulStop()
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@carsonip carsonip Oct 11, 2024 •
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[to reviewer] Moving grpcServer.GracefulStop ahead of httpServer.stop, as this was how the code was originally written before elastic/gmux#13 was discovered. Now that it is fixed, we can revert it, so that it sends GOAWAY to grpc clients.

stopctx, cancel := context.WithTimeout(context.Background(), s.cfg.ShutdownTimeout)
defer cancel()
s.httpServer.stop(stopctx)
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return nil
})
if err := g.Wait(); err != http.ErrServerClosed {
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