TUN-8489: Add default noop logger for capnprpc

Author: DevinCarr

tunnelrpc/quic/cloudflared_client.go

@@ -32,7 +32,7 @@ func NewCloudflaredClient(ctx context.Context, stream io.ReadWriteCloser, reques
 		return nil, fmt.Errorf("expect to write %d bytes for RPC stream protocol signature, wrote %d", len(rpcStreamProtocolSignature), n)
 	}
 	transport := tunnelrpc.SafeTransport(stream)
-	conn := rpc.NewConn(transport)
+	conn := tunnelrpc.NewClientConn(transport)
 	client := pogs.NewCloudflaredServer_PogsClient(conn.Bootstrap(ctx), conn)
 	return &CloudflaredClient{
 		client:         client,

tunnelrpc/quic/cloudflared_server.go

@@ -6,8 +6,6 @@ import (
 	"io"
 	"time"
 
-	"zombiezen.com/go/capnproto2/rpc"
-
 	"github.com/cloudflare/cloudflared/tunnelrpc"
 	"github.com/cloudflare/cloudflared/tunnelrpc/pogs"
 )
@@ -58,7 +56,7 @@ func (s *CloudflaredServer) handleRPC(ctx context.Context, stream io.ReadWriteCl
 	defer transport.Close()
 
 	main := pogs.CloudflaredServer_ServerToClient(s.sessionManager, s.configManager)
-	rpcConn := rpc.NewConn(transport, rpc.MainInterface(main.Client))
+	rpcConn := tunnelrpc.NewServerConn(transport, main.Client)
 	defer rpcConn.Close()
 
 	// We ignore the errors here because if cloudflared fails to handle a request, we will just move on.

tunnelrpc/quic/session_client.go

@@ -31,7 +31,7 @@ func NewSessionClient(ctx context.Context, stream io.ReadWriteCloser, requestTim
 		return nil, fmt.Errorf("expect to write %d bytes for RPC stream protocol signature, wrote %d", len(rpcStreamProtocolSignature), n)
 	}
 	transport := tunnelrpc.SafeTransport(stream)
-	conn := rpc.NewConn(transport)
+	conn := tunnelrpc.NewClientConn(transport)
 	return &SessionClient{
 		client:         pogs.NewSessionManager_PogsClient(conn.Bootstrap(ctx), conn),
 		transport:      transport,

tunnelrpc/quic/session_server.go

@@ -6,8 +6,6 @@ import (
 	"io"
 	"time"
 
-	"zombiezen.com/go/capnproto2/rpc"
-
 	"github.com/cloudflare/cloudflared/tunnelrpc"
 	"github.com/cloudflare/cloudflared/tunnelrpc/pogs"
 )
@@ -48,7 +46,7 @@ func (s *SessionManagerServer) Serve(ctx context.Context, stream io.ReadWriteClo
 	defer transport.Close()
 
 	main := pogs.SessionManager_ServerToClient(s.sessionManager)
-	rpcConn := rpc.NewConn(transport, rpc.MainInterface(main.Client))
+	rpcConn := tunnelrpc.NewServerConn(transport, main.Client)
 	defer rpcConn.Close()
 
 	select {

tunnelrpc/registration_client.go

@@ -35,7 +35,7 @@ type registrationClient struct {
 
 func NewRegistrationClient(ctx context.Context, stream io.ReadWriteCloser, requestTimeout time.Duration) RegistrationClient {
 	transport := SafeTransport(stream)
-	conn := rpc.NewConn(transport)
+	conn := NewClientConn(transport)
 	client := pogs.NewRegistrationServer_PogsClient(conn.Bootstrap(ctx), conn)
 	return &registrationClient{
 		client:         client,

tunnelrpc/registration_server.go

@@ -4,8 +4,6 @@ import (
 	"context"
 	"io"
 
-	"zombiezen.com/go/capnproto2/rpc"
-
 	"github.com/cloudflare/cloudflared/tunnelrpc/pogs"
 )
 
@@ -28,8 +26,7 @@ func (s *RegistrationServer) Serve(ctx context.Context, stream io.ReadWriteClose
 	defer transport.Close()
 
 	main := pogs.RegistrationServer_ServerToClient(s.registrationServer)
-	rpcConn := rpc.NewConn(transport, rpc.MainInterface(main.Client))
-	defer rpcConn.Close()
+	rpcConn := NewServerConn(transport, main.Client)
 
 	select {
 	case <-rpcConn.Done():

tunnelrpc/utils.go

@@ -1,10 +1,12 @@
 package tunnelrpc
 
 import (
+	"context"
 	"io"
 	"time"
 
 	"github.com/pkg/errors"
+	capnp "zombiezen.com/go/capnproto2"
 	"zombiezen.com/go/capnproto2/rpc"
 )
 
@@ -67,3 +69,21 @@ func isTemporaryError(e error) bool {
 	t, ok := e.(temp)
 	return ok && t.Temporary()
 }
+
+// NoopCapnpLogger provides a logger to discard all capnp rpc internal logging messages as
+// they are by default provided to stdout if no logger interface is provided. These logging
+// messages in cloudflared have typically not provided a high amount of pratical value
+// as the messages are extremely verbose and don't provide a good insight into the message
+// contents or rpc method names.
+type noopCapnpLogger struct{}
+
+func (noopCapnpLogger) Infof(ctx context.Context, format string, args ...interface{})  {}
+func (noopCapnpLogger) Errorf(ctx context.Context, format string, args ...interface{}) {}
+
+func NewClientConn(transport rpc.Transport) *rpc.Conn {
+	return rpc.NewConn(transport, rpc.ConnLog(noopCapnpLogger{}))
+}
+
+func NewServerConn(transport rpc.Transport, client capnp.Client) *rpc.Conn {
+	return rpc.NewConn(transport, rpc.MainInterface(client), rpc.ConnLog(noopCapnpLogger{}))
+}