api: vat2 and json autogeneration for api messages

VAT2: A completely auto-generated replacement of VAT.
Reads input message in JSON from stdin and outputs received messages in JSON.

A VAT2 plugin is automatically built for a .api file.
There no longer a need for a separate _test.c.

Example:
vat2 show_version {}
{
        "_msgname":     "show_version_reply",
        "retval":       0,
        "program":      "vpe",
        "version":      "21.01-rc0~411-gf6eb348a6",
        "build_date":   "2020-11-19T09:49:25",
        "build_directory":      "/vpp/autogen3"
}

vat2 sw_interface_dump '{"sw_if_index": -1,
                         "name_filter_valid": 0,
                         "name_filter": ""}'
[{
                "_msgname":     "sw_interface_details",
                "sw_if_index":  0,
                "sup_sw_if_index":      0,
                "l2_address":   "00:00:00:00:00:00",
                "flags":        "Invalid ENUM",
                "type": "IF_API_TYPE_HARDWARE",
                "link_duplex":  "LINK_DUPLEX_API_UNKNOWN",
                "link_speed":   0,
                "link_mtu":     0,
                "mtu":  [0, 0, 0, 0],
                "sub_id":       0,
                "sub_number_of_tags":   0,
                "sub_outer_vlan_id":    0,
                "sub_inner_vlan_id":    0,
                "sub_if_flags": "Invalid ENUM",
                "vtr_op":       0,
                "vtr_push_dot1q":       0,
                "vtr_tag1":     0,
                "vtr_tag2":     0,
                "outer_tag":    0,
                "b_dmac":       "00:00:00:00:00:00",
                "b_smac":       "00:00:00:00:00:00",
                "b_vlanid":     0,
                "i_sid":        0,
                "interface_name":       "local0",
                "interface_dev_type":   "local",
                "tag":  ""
        }]

This is the first phase and vat2 is not integrated in packaging yet.

Type: feature
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: Ib45ddeafb180ea7da8c5dc274a9274d7a4edc876
Signed-off-by: Ole Troan <ot@cisco.com>

2 files changed, 4 insertions, 57 deletions

diff --git a/src/plugins/dns/dns.api b/src/plugins/dns/dns.api
index 866ed8abae3..17ab5244388 100644
--- a/src/plugins/dns/dns.api
+++ b/src/plugins/dns/dns.api
@@ -21,7 +21,7 @@ option version = "1.0.0";
     @param context - sender context, to match reply w/ request
     @param is_enable - 1 = enable, 0 = disable
 */
-autoreply manual_print define dns_enable_disable {
+autoreply define dns_enable_disable {
     u32 client_index;
     u32 context;
     u8 enable;
@@ -36,7 +36,7 @@ autoreply manual_print define dns_enable_disable {
     @param is_add - add = 1, delete = 0
     @param server_address - server ip address
 */
-autoreply manual_print define dns_name_server_add_del {
+autoreply define dns_name_server_add_del {
     u32 client_index;
     u32 context;
     u8 is_ip6;
@@ -51,7 +51,7 @@ autoreply manual_print define dns_name_server_add_del {
     @param context - sender context, to match reply w/ request
     @param name - the name to resolve
 */
-manual_print define dns_resolve_name {
+define dns_resolve_name {
     u32 client_index;
     u32 context;
     u8 name[256];
@@ -84,7 +84,7 @@ define dns_resolve_name_reply {
     @param is_ip6 - set if the reverse-DNS request is an ip6 address
     @param address - the address to map to a name
 */
-manual_print define dns_resolve_ip {
+define dns_resolve_ip {
     u32 client_index;
     u32 context;
     u8 is_ip6;
diff --git a/src/plugins/dns/dns.c b/src/plugins/dns/dns.c
index 045f4d616a3..de1862dd52c 100644
--- a/src/plugins/dns/dns.c
+++ b/src/plugins/dns/dns.c
@@ -2992,59 +2992,6 @@ found_src_address:
     }
 }
 
-static void *vl_api_dns_enable_disable_t_print
-  (vl_api_dns_enable_disable_t * mp, void *handle)
-{
-  u8 *s;
-
-  s = format (0, "SCRIPT: dns_enable_disable ");
-  s = format (s, "%s ", mp->enable ? "enable" : "disable");
-
-  FINISH;
-}
-
-static void *vl_api_dns_name_server_add_del_t_print
-  (vl_api_dns_name_server_add_del_t * mp, void *handle)
-{
-  u8 *s;
-
-  s = format (0, "SCRIPT: dns_name_server_add_del ");
-  if (mp->is_ip6)
-    s = format (s, "%U ", format_ip6_address,
-		(ip6_address_t *) mp->server_address);
-  else
-    s = format (s, "%U ", format_ip4_address,
-		(ip4_address_t *) mp->server_address);
-
-  if (mp->is_add == 0)
-    s = format (s, "del ");
-
-  FINISH;
-}
-
-static void *vl_api_dns_resolve_name_t_print
-  (vl_api_dns_resolve_name_t * mp, void *handle)
-{
-  u8 *s;
-
-  s = format (0, "SCRIPT: dns_resolve_name ");
-  s = format (s, "%s ", mp->name);
-  FINISH;
-}
-
-static void *vl_api_dns_resolve_ip_t_print
-  (vl_api_dns_resolve_ip_t * mp, void *handle)
-{
-  u8 *s;
-
-  s = format (0, "SCRIPT: dns_resolve_ip ");
-  if (mp->is_ip6)
-    s = format (s, "%U ", format_ip6_address, mp->address);
-  else
-    s = format (s, "%U ", format_ip4_address, mp->address);
-  FINISH;
-}
-
 #include <dns/dns.api.c>
 static clib_error_t *
 dns_init (vlib_main_t * vm)