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pbrd: optional json for show pbr map

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Signed-off-by: Wesley Coakley <wcoakley@cumulusnetworks.com>
This commit is contained in:
Wesley Coakley 2020-05-19 13:15:21 -05:00
parent 7a7b0c13f9
commit 1a8cafe19c
2 changed files with 112 additions and 3 deletions
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4
doc/user/pbr.rst
View File

@ -115,11 +115,13 @@ end destination.
Not supported with NETNS VRF backend.
.. clicmd:: show pbr map [NAME] [detail]
.. clicmd:: show pbr map [NAME] [detail|json]
Display pbr maps either all or by ``NAME``. If ``detail`` is set, it will
give information about the rules unique ID used internally and some extra
debugging information about install state for the nexthop/nexthop group.
Setting ``json`` will provide the same information in a predictable and
parsable format.
.. _pbr-policy:

111
pbrd/pbr_vty.c
View File

@ -591,6 +591,71 @@ static void vty_show_pbrms(struct vty *vty,
}
}
static void vty_json_pbrms(json_object *j, struct vty *vty,
const struct pbr_map_sequence *pbrms)
{
json_object *jpbrm, *matches, *nexthop_group;
char *nhg_name = pbrms->nhgrp_name ? pbrms->nhgrp_name
: pbrms->internal_nhg_name;
char buf[PREFIX_STRLEN];
char rbuf[64];
jpbrm = json_object_new_object();
if (pbrms->reason)
pbr_map_reason_string(pbrms->reason, rbuf, sizeof(rbuf));
json_object_int_add(jpbrm, "sequenceNumber", pbrms->seqno);
json_object_int_add(jpbrm, "ruleNumber", pbrms->ruleno);
json_object_int_add(jpbrm, "identifier", pbrms->unique);
json_object_boolean_add(jpbrm, "vrfUnchanged", pbrms->vrf_unchanged);
json_object_boolean_add(jpbrm, "installed",
pbr_nht_get_installed(nhg_name));
json_object_string_add(jpbrm, "reason", pbrms->reason ? rbuf : "Valid");
if (pbrms->nhgrp_name || pbrms->mark) {
nexthop_group = json_object_new_object();
json_object_string_add(nexthop_group, "name", nhg_name);
json_object_int_add(nexthop_group, "nhsInstalled",
pbrms->nhs_installed);
json_object_int_add(nexthop_group, "nhtInstalled",
pbr_nht_get_installed(nhg_name));
json_object_int_add(nexthop_group, "tableId",
pbr_nht_get_table(nhg_name));
json_object_boolean_add(nexthop_group, "installed",
pbr_nht_get_installed(nhg_name));
json_object_object_add(jpbrm, "nexthopGroup", nexthop_group);
} else if (pbrms->vrf_lookup) {
json_object_string_add(jpbrm, "vrf", pbrms->vrf_name);
}
if (pbrms->src || pbrms->dst || pbrms->mark) {
matches = json_object_new_object();
if (pbrms->src)
json_object_string_add(
matches, "src",
prefix2str(pbrms->src, buf, sizeof(buf)));
if (pbrms->dst)
json_object_string_add(
matches, "dst",
prefix2str(pbrms->dst, buf, sizeof(buf)));
if (pbrms->mark)
json_object_int_add(matches, "mark", pbrms->mark);
json_object_object_add(jpbrm, "matchRule", matches);
}
json_object_array_add(j, jpbrm);
}
static void vty_show_pbr_map(struct vty *vty, const struct pbr_map *pbrm,
bool detail)
{
@ -604,23 +669,65 @@ static void vty_show_pbr_map(struct vty *vty, const struct pbr_map *pbrm,
vty_show_pbrms(vty, pbrms, detail);
}
static void vty_json_pbr_map(json_object *j, struct vty *vty,
const struct pbr_map *pbrm)
{
struct pbr_map_sequence *pbrms;
struct listnode *node;
json_object *jpbrms;
json_object_string_add(j, "name", pbrm->name);
json_object_boolean_add(j, "valid", pbrm->valid);
jpbrms = json_object_new_array();
for (ALL_LIST_ELEMENTS_RO(pbrm->seqnumbers, node, pbrms))
vty_json_pbrms(jpbrms, vty, pbrms);
json_object_object_add(j, "sequences", jpbrms);
}
DEFPY (show_pbr_map,
show_pbr_map_cmd,
"show pbr map [NAME$name] [detail$detail]",
"show pbr map [NAME$name] [detail$detail|json$json]",
SHOW_STR
PBR_STR
"PBR Map\n"
"PBR Map Name\n"
"Detailed information\n")
"Detailed information\n"
JSON_STR)
{
struct pbr_map *pbrm;
json_object *j = NULL;
if (json)
j = json_object_new_object();
RB_FOREACH (pbrm, pbr_map_entry_head, &pbr_maps) {
json_object *this_map = NULL;
if (name && strcmp(name, pbrm->name) != 0)
continue;
if (j)
this_map = json_object_new_object();
if (this_map) {
vty_json_pbr_map(this_map, vty, pbrm);
json_object_object_add(j, pbrm->name, this_map);
continue;
}
vty_show_pbr_map(vty, pbrm, detail);
}
if (j) {
vty_out(vty, "%s\n",
json_object_to_json_string_ext(
j, JSON_C_TO_STRING_PRETTY));
json_object_free(j);
}
return CMD_SUCCESS;
}