api/cli: add api to retrieve statements and support showing them via cli

$ gobgp policy statement
$ gobgp policy statement st0

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

1 files changed, 29 insertions, 0 deletions

diff --git a/server/server.go b/server/server.go
index 18c2693e..e25d314f 100644
--- a/server/server.go
+++ b/server/server.go
@@ -1643,6 +1643,13 @@ func (server *BgpServer) handleGrpc(grpcReq *GrpcRequest) []*SenderMsg {
 			ResponseErr: err,
 		}
 		close(grpcReq.ResponseCh)
+	case REQ_STATEMENT:
+		if err := server.handleGrpcGetStatement(grpcReq); err != nil {
+			grpcReq.ResponseCh <- &GrpcResponse{
+				ResponseErr: err,
+			}
+		}
+		close(grpcReq.ResponseCh)
 	case REQ_POLICY_ROUTEPOLICY, REQ_POLICY_ROUTEPOLICIES:
 		info := server.policy.PolicyMap
 		typ := grpcReq.RequestType
@@ -1754,6 +1761,28 @@ func (server *BgpServer) handleGrpcModDefinedSet(grpcReq *GrpcRequest) error {
 	return err
 }
 
+func (server *BgpServer) handleGrpcGetStatement(grpcReq *GrpcRequest) error {
+	arg := grpcReq.Data.(*api.Statement)
+	name := arg.Name
+	found := false
+	for _, s := range server.policy.StatementMap {
+		if name != "" && name != s.Name {
+			continue
+		}
+		grpcReq.ResponseCh <- &GrpcResponse{
+			Data: s.ToApiStruct(),
+		}
+		found = true
+		if name != "" {
+			break
+		}
+	}
+	if !found {
+		return fmt.Errorf("not found %s", name)
+	}
+	return nil
+}
+
 func (server *BgpServer) handleMrt(grpcReq *GrpcRequest) {
 	now := uint32(time.Now().Unix())
 	view := ""