1  //go:build !monitoring
 2  // +build !monitoring
 3  
 4  package monitoring
 5  
 6  import (
 7  	"fmt"
 8  
 9  	"github.com/lightningnetwork/lnd/lncfg"
10  	"google.golang.org/grpc"
11  )
12  
13  // GetPromInterceptors returns the set of interceptors for Prometheus
14  // monitoring if monitoring is enabled, else empty slices. Monitoring is
15  // currently disabled.
16  func GetPromInterceptors() ([]grpc.UnaryServerInterceptor, []grpc.StreamServerInterceptor) {
17  	return []grpc.UnaryServerInterceptor{}, []grpc.StreamServerInterceptor{}
18  }
19  
20  // ExportPrometheusMetrics is required for lnd to compile so that Prometheus
21  // metric exporting can be hidden behind a build tag.
22  func ExportPrometheusMetrics(_ *grpc.Server, _ lncfg.Prometheus) error {
23  	return fmt.Errorf("lnd must be built with the monitoring tag to " +
24  		"enable exporting Prometheus metrics")
25  }