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Add a no-op GRPC responder service to the podman system service

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Add a bare minimum GRPC service to the podman system service socket.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
This commit is contained in:
Nalin Dahyabhai
2025-10-27 18:51:18 -04:00
parent e0800b5a24
commit be82989be3
16 changed files with 611 additions and 52 deletions
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22
pkg/api/server/server.go
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@@ -19,7 +19,9 @@ import (
"github.com/containers/podman/v6/libpod"
"github.com/containers/podman/v6/libpod/shutdown"
"github.com/containers/podman/v6/pkg/api/grpcpb"
"github.com/containers/podman/v6/pkg/api/handlers"
grpchandlers "github.com/containers/podman/v6/pkg/api/handlers/grpc"
"github.com/containers/podman/v6/pkg/api/server/idle"
"github.com/containers/podman/v6/pkg/api/types"
"github.com/containers/podman/v6/pkg/domain/entities"
@@ -28,12 +30,13 @@ import (
"github.com/gorilla/mux"
"github.com/gorilla/schema"
"github.com/sirupsen/logrus"
_ "google.golang.org/grpc"
_ "google.golang.org/grpc/reflection"
"google.golang.org/grpc"
"google.golang.org/grpc/reflection"
)
type APIServer struct {
http.Server // The HTTP work happens here
http.Server // The HTTP work happens here
grpc *grpc.Server // GRPC stuff happens here
net.Listener // mux for routing HTTP API calls to libpod routines
*libpod.Runtime // Where the real work happens
*schema.Decoder // Decoder for Query parameters to structs
@@ -73,6 +76,10 @@ func newServer(runtime *libpod.Runtime, listener net.Listener, opts entities.Ser
router := mux.NewRouter().UseEncodedPath()
tracker := idle.NewTracker(opts.Timeout)
serverProtocols := &http.Protocols{}
serverProtocols.SetHTTP1(true)
serverProtocols.SetHTTP2(true)
server := APIServer{
Server: http.Server{
ConnContext: func(ctx context.Context, c net.Conn) context.Context {
@@ -82,7 +89,9 @@ func newServer(runtime *libpod.Runtime, listener net.Listener, opts entities.Ser
ErrorLog: log.New(logrus.StandardLogger().Out, "", 0),
Handler: router,
IdleTimeout: opts.Timeout * 2,
Protocols: serverProtocols,
},
grpc: grpc.NewServer(),
CorsHeaders: opts.CorsHeaders,
Listener: listener,
PProfAddr: opts.PProfAddr,
@@ -92,6 +101,9 @@ func newServer(runtime *libpod.Runtime, listener net.Listener, opts entities.Ser
tlsClientCAFile: opts.TLSClientCAFile,
}
router.NewRoute().HeadersRegexp("Content-Type", "application/grpc(\\+.*)?").Handler(server.grpc)
reflection.Register(server.grpc)
server.BaseContext = func(_ net.Listener) context.Context {
ctx := context.WithValue(context.Background(), types.DecoderKey, handlers.NewAPIDecoder())
ctx = context.WithValue(ctx, types.CompatDecoderKey, handlers.NewCompatAPIDecoder())
@@ -163,6 +175,8 @@ func newServer(runtime *libpod.Runtime, listener net.Listener, opts entities.Ser
}
}
grpcpb.RegisterNoopServer(server.grpc, grpchandlers.NewNoopServer(runtime)) // TODO: make this table-driven instead of a one-off?
if logrus.IsLevelEnabled(logrus.TraceLevel) {
// If in trace mode log request and response bodies
router.Use(loggingHandler())
@@ -213,6 +227,7 @@ func (s *APIServer) Serve() error {
s.setupPprof()
if err := shutdown.Register("service", func(_ os.Signal) error {
s.grpc.GracefulStop()
err := s.Shutdown(true)
if err == nil {
// For `systemctl stop podman.service` support, exit code should be 0
@@ -247,6 +262,7 @@ func (s *APIServer) Serve() error {
}
err = s.Server.ServeTLS(s.Listener, s.tlsCertFile, s.tlsKeyFile)
} else {
s.Server.Protocols.SetUnencryptedHTTP2(true)
err = s.Server.Serve(s.Listener)
}
if err != nil && err != http.ErrServerClosed {