cli: add the show command for routing policy of neighbor

% gobgp -u 10.0.255.1 neighbor 10.0.0.3 policy
DefaultImportPolicy: ACCEPT
DefaultImportPolicy: ACCEPT
ImportPolicies:
  PolicyName policy0:
    StatementName st0:
      Conditions:
        PrefixSet:    ps0   192.168.0.0/16  16..24
        NeighborSet:  ns0   10.0.0.2
        MatchOption:  ALL
      Actions:
        REJECT
  PolicyName policy5:
ExportPolicies:
  PolicyName policy1:
    StatementName st1:
      Conditions:
        PrefixSet:    ps1   192.168.20.0/24
                            192.168.200.0/24
        NeighborSet:  ns0   10.0.0.2
        MatchOption:  ALL
      Actions:
        REJECT

1 files changed, 41 insertions, 0 deletions

diff --git a/server/peer.go b/server/peer.go
index 2a4e71a0..a89fb303 100644
--- a/server/peer.go
+++ b/server/peer.go
@@ -587,6 +587,47 @@ func (peer *Peer) handleGrpc(grpcReq *GrpcRequest) {
 			}
 		}
 		result.Data = err
+	case REQ_NEIGHBOR_POLICY:
+		result := &GrpcResponse{}
+		resInPolicies := []*api.PolicyDefinition{}
+		resOutPolicies := []*api.PolicyDefinition{}
+
+		// Add importpolies that has been set in the configuration file to the list.
+		// However, peer haven't target importpolicy when add PolicyDefinition of name only to the list.
+		conInPolicyNames := peer.peerConfig.ApplyPolicy.ImportPolicies
+		for _, conInPolicyName := range conInPolicyNames {
+			for _, inPolicy := range peer.importPolicies {
+				if conInPolicyName == inPolicy.Name {
+					resInPolicies = append(resInPolicies, inPolicy.ToApiStruct())
+				} else {
+					resInPolicies = append(resInPolicies, &api.PolicyDefinition{PolicyDefinitionName: conInPolicyName})
+				}
+
+			}
+		}
+		// Add importpolies that has been set in the configuration file to the list.
+		// However, peer haven't target importpolicy when add PolicyDefinition of name only to the list.
+		conOutPolicyNames := peer.peerConfig.ApplyPolicy.ExportPolicies
+		for _, conOutPolicyName := range conOutPolicyNames {
+			for _, outPolicy := range peer.exportPolicies {
+				if conOutPolicyName == outPolicy.Name {
+					resOutPolicies = append(resOutPolicies, outPolicy.ToApiStruct())
+				} else {
+					resOutPolicies = append(resOutPolicies, &api.PolicyDefinition{PolicyDefinitionName: conOutPolicyName})
+				}
+
+			}
+		}
+		result.Data = &api.ApplyPolicy{
+			DefaultImportPolicy: int64(peer.defaultImportPolicy),
+			ImportPolicies:      resInPolicies,
+			DefaultExportPolicy: int64(peer.defaultExportPolicy),
+			ExportPolicies:      resOutPolicies,
+		}
+		grpcReq.ResponseCh <- result
+
+		close(grpcReq.ResponseCh)
+		return
 	}
 	grpcReq.ResponseCh <- result
 	close(grpcReq.ResponseCh)