Stop using deprecated functions

otelgrpc has deprecated otelgrpc.UnaryClientInterceptor and
otelgrpc.UnaryServerInterceptor, instead you should use NewClientHandler
with grpc.WithStatsHandler to instrument a gRPC client, and
NewServerHandler with grpc.StatsHandler to instrument a gRPC server.

Signed-off-by: Kim Christensen <[email protected]>

pkg/plugins/pluggable/connection.go

@@ -148,7 +148,7 @@ func (c *PluginConnection) Start(ctx context.Context, pluginCfg io.Reader) error
 		// Configure gRPC to propagate the span context so the plugin's traces
 		// show up under the current span
 		GRPCDialOptions: []grpc.DialOption{
-			grpc.WithUnaryInterceptor(otelgrpc.UnaryClientInterceptor()),
+			grpc.WithStatsHandler(otelgrpc.NewClientHandler()),
 		},
 	})
 

pkg/plugins/server.go

@@ -29,11 +29,11 @@ func ServeMany(c *portercontext.Context, pluginMap map[int]plugin.PluginSet) {
 		VersionedPlugins: pluginMap,
 		GRPCServer: func(opts []grpc.ServerOption) *grpc.Server {
 			opts = append(opts,
+				grpc.StatsHandler(otelgrpc.NewServerHandler()),
 				// These handlers are called from left to right. The right-most handler is the one that calls the actual implementation
 				// the grpc_recovery handler should always be last so that it can recover from a panic, and then the other handlers only get
 				// a nice error (created from the panic) to deal with
 				grpc.ChainUnaryInterceptor(
-					otelgrpc.UnaryServerInterceptor(),
 					makeLogUnaryHandler(c),
 					makePanicHandler()),
 			)