table: add string method for easier debugging

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>

2 files changed, 24 insertions, 5 deletions

diff --git a/table/destination.go b/table/destination.go
index de2bf659..61d3e4c8 100644
--- a/table/destination.go
+++ b/table/destination.go
@@ -76,6 +76,21 @@ func (lhs *PeerInfo) Equal(rhs *PeerInfo) bool {
 	return false
 }
 
+func (i *PeerInfo) String() string {
+	if i.Address == nil {
+		return "local"
+	}
+	s := bytes.NewBuffer(make([]byte, 0, 64))
+	s.WriteString(fmt.Sprintf("{ %s | ", i.Address))
+	s.WriteString(fmt.Sprintf("as: %d", i.AS))
+	s.WriteString(fmt.Sprintf(", id: %s", i.ID))
+	if i.RouteReflectorClient {
+		s.WriteString(fmt.Sprintf(", cluster-id: %s", i.RouteReflectorClusterID))
+	}
+	s.WriteString(" }")
+	return s.String()
+}
+
 type Destination struct {
 	routeFamily    bgp.RouteFamily
 	nlri           bgp.AddrPrefixInterface
diff --git a/table/path.go b/table/path.go
index 386d39c3..22a068eb 100644
--- a/table/path.go
+++ b/table/path.go
@@ -297,11 +297,15 @@ func (path *Path) getPathAttr(pattrType bgp.BGPAttrType) (int, bgp.PathAttribute
 
 // return Path's string representation
 func (path *Path) String() string {
-	str := fmt.Sprintf("Source: %v, ", path.GetSource())
-	str += fmt.Sprintf(" NLRI: %s, ", path.getPrefix())
-	str += fmt.Sprintf(" nexthop: %s, ", path.GetNexthop())
-	str += fmt.Sprintf(" withdraw: %s, ", path.IsWithdraw)
-	return str
+	s := bytes.NewBuffer(make([]byte, 0, 64))
+	s.WriteString(fmt.Sprintf("{ %s | ", path.getPrefix()))
+	s.WriteString(fmt.Sprintf("src: %s", path.GetSource()))
+	s.WriteString(fmt.Sprintf(", nh: %s", path.GetNexthop()))
+	if path.IsWithdraw {
+		s.WriteString(", withdraw")
+	}
+	s.WriteString(" }")
+	return s.String()
 }
 
 func (path *Path) getPrefix() string {