bgpd: Add ability to display information about bestpath in json

When retrieving information about neighbors or summary in json
add some information about what bestPath particulars we have for
this bgp session.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

diff --git a/bgpd/bgp_vty.c b/bgpd/bgp_vty.c
index 355d1037b8b472985f0175b281c7f13c639bcf97..ea6632bf1329768274fef90be86349492aed7cb9 100644 (file)
--- a/bgpd/bgp_vty.c
+++ b/bgpd/bgp_vty.c
@@ -6652,6 +6652,48 @@ DEFUN (show_bgp_memory,
        return CMD_SUCCESS;
 }
 
+static void bgp_show_bestpath_json(struct bgp *bgp, json_object *json)
+{
+       json_object *bestpath = json_object_new_object();
+
+       if (bgp_flag_check(bgp, BGP_FLAG_ASPATH_IGNORE))
+               json_object_string_add(bestpath, "asPath", "ignore");
+
+       if (bgp_flag_check(bgp, BGP_FLAG_ASPATH_CONFED))
+               json_object_string_add(bestpath, "asPath", "confed");
+
+       if (bgp_flag_check(bgp, BGP_FLAG_ASPATH_MULTIPATH_RELAX)) {
+               if (bgp_flag_check(bgp,
+                                  BGP_FLAG_MULTIPATH_RELAX_AS_SET))
+                       json_object_string_add(bestpath,
+                                              "multiPathRelax",
+                                              "as-set");
+               else
+                       json_object_string_add(bestpath,
+                                              "multiPathRelax",
+                                              "true");
+       } else
+               json_object_string_add(bestpath,
+                                      "multiPathRelax",
+                                      "false");
+
+       if (bgp_flag_check(bgp, BGP_FLAG_COMPARE_ROUTER_ID))
+               json_object_string_add(bestpath, "compareRouterId", "true");
+       if (bgp_flag_check(bgp, BGP_FLAG_MED_CONFED)
+           || bgp_flag_check(bgp, BGP_FLAG_MED_MISSING_AS_WORST)) {
+               if (bgp_flag_check(bgp, BGP_FLAG_MED_CONFED))
+                       json_object_string_add(bestpath, "med",
+                                              "confed");
+               if (bgp_flag_check(bgp, BGP_FLAG_MED_MISSING_AS_WORST))
+                       json_object_string_add(bestpath, "med",
+                                              "missing-as-worst");
+               else
+                       json_object_string_add(bestpath, "med", "true");
+       }
+
+       json_object_object_add(json, "bestPath", bestpath);
+}
+
 /* Show BGP peer's summary information. */
 static int bgp_show_summary(struct vty *vty, struct bgp *bgp, int afi, int safi,
                            u_char use_json, json_object *json)
@@ -7048,6 +7090,8 @@ static int bgp_show_summary(struct vty *vty, struct bgp *bgp, int afi, int safi,
                json_object_int_add(json, "totalPeers", count);
                json_object_int_add(json, "dynamicPeers", dn_count);
 
+               bgp_show_bestpath_json(bgp, json);
+
                vty_out(vty, "%s\n", json_object_to_json_string_ext(
                                             json, JSON_C_TO_STRING_PRETTY));
                json_object_free(json);
@@ -9745,6 +9789,7 @@ static int bgp_show_neighbor(struct vty *vty, struct bgp *bgp,
        }
 
        if (use_json) {
+               bgp_show_bestpath_json(bgp, json);
                vty_out(vty, "%s\n", json_object_to_json_string_ext(
                                             json, JSON_C_TO_STRING_PRETTY));
                json_object_free(json);