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authorFilip Tehlar <ftehlar@cisco.com>2021-07-23 08:51:10 +0000
committerFilip Tehlar <ftehlar@cisco.com>2021-09-28 16:06:19 +0000
commit36217e3ca8a1ca2e7a341b6b44ffc25e6497191c (patch)
treeba45e2b144e0d66a69c0502a7823c28239d0bc66 /src/vlibapi
parent3459ece6da90627b161e2128b5926f1e58e7db65 (diff)
api: API trace improvements
Type: improvement * add support for JSON format in API trace * add ability to replay JSON API trace in both VPP and VAT2 * use CRC for backward compatibility check during JSON API replay * fix API trace CLI (and remove duplicits) * remove custom dump * remove vppapitrace.py * update docs accordingly Change-Id: I5294f68bebe6cbe738630f457f3a87720e06486b Signed-off-by: Filip Tehlar <ftehlar@cisco.com> Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vlibapi')
-rw-r--r--src/vlibapi/api.h9
-rw-r--r--src/vlibapi/api_common.h25
-rw-r--r--src/vlibapi/api_shared.c283
3 files changed, 209 insertions, 108 deletions
diff --git a/src/vlibapi/api.h b/src/vlibapi/api.h
index 431155c5e09..d05395a213c 100644
--- a/src/vlibapi/api.h
+++ b/src/vlibapi/api.h
@@ -36,8 +36,8 @@ typedef CLIB_PACKED ( struct {
}) vl_api_trace_file_header_t;
/* *INDENT-ON* */
-int vl_msg_api_trace_save (api_main_t * am,
- vl_api_trace_which_t which, FILE * fp);
+int vl_msg_api_trace_save (api_main_t *am, vl_api_trace_which_t which,
+ FILE *fp, u8 is_json);
#define VLIB_API_INIT_FUNCTION(x) VLIB_DECLARE_INIT_FUNCTION(x,api_init)
@@ -123,6 +123,11 @@ vlib_node_t ***vlib_node_unserialize (u8 * vector);
u32 vl_msg_api_get_msg_length (void *msg_arg);
+typedef int (*vl_msg_traverse_trace_fn) (u8 *, void *);
+
+int vl_msg_traverse_trace (vl_api_trace_t *tp, vl_msg_traverse_trace_fn fn,
+ void *ctx);
+
#endif /* included_api_h */
/*
* fd.io coding-style-patch-verification: ON
diff --git a/src/vlibapi/api_common.h b/src/vlibapi/api_common.h
index 3fdc1bbdd36..a955636ba3f 100644
--- a/src/vlibapi/api_common.h
+++ b/src/vlibapi/api_common.h
@@ -27,6 +27,7 @@
#include <vppinfra/clib_error.h>
#include <vppinfra/elog.h>
+#include <vppinfra/cJSON.h>
#include <vlibapi/api_types.h>
#include <svm/svm_common.h>
#include <svm/queue.h>
@@ -128,6 +129,9 @@ typedef struct
void *cleanup; /**< non-default message cleanup handler */
void *endian; /**< message endian function */
void *print; /**< message print function */
+ void *print_json; /**< message print function (JSON format) */
+ void *tojson; /**< binary to JSON convert function */
+ void *fromjson; /**< JSON to binary convert function */
int size; /**< message size */
int traced; /**< is this message to be traced? */
int replay; /**< is this message to be replayed? */
@@ -173,11 +177,10 @@ void vl_msg_api_trace_only (void *the_msg);
void vl_msg_api_cleanup_handler (void *the_msg);
void vl_msg_api_replay_handler (void *the_msg);
void vl_msg_api_socket_handler (void *the_msg);
-void vl_msg_api_set_handlers (int msg_id, char *msg_name,
- void *handler,
- void *cleanup,
- void *endian,
- void *print, int msg_size, int traced);
+void vl_msg_api_set_handlers (int msg_id, char *msg_name, void *handler,
+ void *cleanup, void *endian, void *print,
+ int msg_size, int traced, void *print_json,
+ void *tojson, void *fromjson);
void vl_msg_api_clean_handlers (int msg_id);
void vl_msg_api_config (vl_msg_api_msg_config_t *);
void vl_msg_api_set_cleanup_handler (int msg_id, void *fp);
@@ -241,9 +244,21 @@ typedef struct api_main_t
/** Message print function vector */
void (**msg_print_handlers) (void *, void *);
+ /** Message print function vector in JSON */
+ void (**msg_print_json_handlers) (void *, void *);
+
+ /** Message convert function vector */
+ cJSON *(**msg_tojson_handlers) (void *);
+
+ /** Message convert function vector */
+ void *(**msg_fromjson_handlers) (cJSON *, int *);
+
/** Message name vector */
const char **msg_names;
+ /** API message ID by name hash table */
+ uword *msg_id_by_name;
+
/** Don't automatically free message buffer vetor */
u8 *message_bounce;
diff --git a/src/vlibapi/api_shared.c b/src/vlibapi/api_shared.c
index 65288d89f67..52e66f41342 100644
--- a/src/vlibapi/api_shared.c
+++ b/src/vlibapi/api_shared.c
@@ -223,13 +223,160 @@ vl_api_serialize_message_table (api_main_t * am, u8 * vector)
return serialize_close_vector (sm);
}
+static int
+vl_msg_api_trace_write_one (api_main_t *am, u8 *msg, FILE *fp)
+{
+ u8 *tmpmem = 0;
+ int tlen, slen;
+ cJSON *(*tojson_fn) (void *);
+
+ u32 msg_length = vec_len (msg);
+ vec_validate (tmpmem, msg_length - 1);
+ clib_memcpy_fast (tmpmem, msg, msg_length);
+ u16 id = clib_net_to_host_u16 (*((u16 *) msg));
+
+ void (*endian_fp) (void *);
+ endian_fp = am->msg_endian_handlers[id];
+ (*endian_fp) (tmpmem);
+
+ if (id < vec_len (am->msg_tojson_handlers) && am->msg_tojson_handlers[id])
+ {
+ tojson_fn = am->msg_tojson_handlers[id];
+ cJSON *o = tojson_fn (tmpmem);
+ char *s = cJSON_Print (o);
+ slen = strlen (s);
+ tlen = fwrite (s, 1, slen, fp);
+ cJSON_free (s);
+ cJSON_Delete (o);
+ vec_free (tmpmem);
+ if (tlen != slen)
+ {
+ fformat (stderr, "writing to file error\n");
+ return -11;
+ }
+ }
+ else
+ fformat (stderr, " [no registered tojson fn]\n");
+
+ return 0;
+}
+
+#define vl_msg_fwrite(_s, _f) fwrite (_s, 1, sizeof (_s) - 1, _f)
+
+typedef struct
+{
+ FILE *fp;
+ u32 n_traces;
+ u32 i;
+} vl_msg_write_json_args_t;
+
+static int
+vl_msg_write_json_fn (u8 *msg, void *ctx)
+{
+ vl_msg_write_json_args_t *arg = ctx;
+ FILE *fp = arg->fp;
+ api_main_t *am = vlibapi_get_main ();
+ int rc = vl_msg_api_trace_write_one (am, msg, fp);
+ if (rc < 0)
+ return rc;
+
+ if (arg->i < arg->n_traces - 1)
+ vl_msg_fwrite (",\n", fp);
+ arg->i++;
+ return 0;
+}
+
+static int
+vl_msg_api_trace_write_json (api_main_t *am, vl_api_trace_t *tp, FILE *fp)
+{
+ vl_msg_write_json_args_t args;
+ clib_memset (&args, 0, sizeof (args));
+ args.fp = fp;
+ args.n_traces = vec_len (tp->traces);
+ vl_msg_fwrite ("[\n", fp);
+
+ int rv = vl_msg_traverse_trace (tp, vl_msg_write_json_fn, &args);
+ if (rv < 0)
+ return rv;
+
+ vl_msg_fwrite ("]", fp);
+ return 0;
+}
+
int
-vl_msg_api_trace_save (api_main_t * am, vl_api_trace_which_t which, FILE * fp)
+vl_msg_traverse_trace (vl_api_trace_t *tp, vl_msg_traverse_trace_fn fn,
+ void *ctx)
{
- vl_api_trace_t *tp;
- vl_api_trace_file_header_t fh;
int i;
u8 *msg;
+ int rv = 0;
+
+ /* No-wrap case */
+ if (tp->wrapped == 0)
+ {
+ for (i = 0; i < vec_len (tp->traces); i++)
+ {
+ /*sa_ignore NO_NULL_CHK */
+ msg = tp->traces[i];
+ if (!msg)
+ continue;
+
+ rv = fn (msg, ctx);
+ if (rv < 0)
+ return rv;
+ }
+ }
+ else
+ {
+ /* Wrap case: write oldest -> end of buffer */
+ for (i = tp->curindex; i < vec_len (tp->traces); i++)
+ {
+ msg = tp->traces[i];
+ if (!msg)
+ continue;
+
+ rv = fn (msg, ctx);
+ if (rv < 0)
+ return rv;
+ }
+ /* write beginning of buffer -> oldest-1 */
+ for (i = 0; i < tp->curindex; i++)
+ {
+ /*sa_ignore NO_NULL_CHK */
+ msg = tp->traces[i];
+ if (!msg)
+ continue;
+
+ rv = fn (msg, ctx);
+ if (rv < 0)
+ return rv;
+ }
+ }
+ return 0;
+}
+
+static int
+vl_api_msg_write_fn (u8 *msg, void *ctx)
+{
+ FILE *fp = ctx;
+ u32 msg_length = clib_host_to_net_u32 (vec_len (msg));
+ if (fwrite (&msg_length, 1, sizeof (msg_length), fp) != sizeof (msg_length))
+ {
+ return (-14);
+ }
+ if (fwrite (msg, 1, vec_len (msg), fp) != vec_len (msg))
+ {
+ return (-14);
+ }
+ return 0;
+}
+
+int
+vl_msg_api_trace_save (api_main_t *am, vl_api_trace_which_t which, FILE *fp,
+ u8 is_json)
+{
+ vl_api_trace_t *tp;
+ vl_api_trace_file_header_t fh;
switch (which)
{
@@ -256,9 +403,13 @@ vl_msg_api_trace_save (api_main_t * am, vl_api_trace_which_t which, FILE * fp)
return -2;
}
+ if (is_json)
+ return vl_msg_api_trace_write_json (am, tp, fp);
+
/* Write the file header */
fh.wrapped = tp->wrapped;
fh.nitems = clib_host_to_net_u32 (vec_len (tp->traces));
+
u8 *m = vl_api_serialize_message_table (am, 0);
fh.msgtbl_size = clib_host_to_net_u32 (vec_len (m));
@@ -274,92 +425,7 @@ vl_msg_api_trace_save (api_main_t * am, vl_api_trace_which_t which, FILE * fp)
}
vec_free (m);
- /* No-wrap case */
- if (tp->wrapped == 0)
- {
- /*
- * Note: vec_len return 0 when fed a NULL pointer.
- * Unfortunately, the static analysis tool doesn't
- * figure it out, hence the suppressed warnings.
- * What a great use of my time.
- */
- for (i = 0; i < vec_len (tp->traces); i++)
- {
- u32 msg_length;
- /*sa_ignore NO_NULL_CHK */
- msg = tp->traces[i];
- /*
- * This retarded check required to pass
- * [sic] SA-checking.
- */
- if (!msg)
- continue;
-
- msg_length = clib_host_to_net_u32 (vec_len (msg));
- if (fwrite (&msg_length, 1, sizeof (msg_length), fp)
- != sizeof (msg_length))
- {
- return (-14);
- }
- if (fwrite (msg, 1, vec_len (msg), fp) != vec_len (msg))
- {
- return (-11);
- }
- }
- }
- else
- {
- /* Wrap case: write oldest -> end of buffer */
- for (i = tp->curindex; i < vec_len (tp->traces); i++)
- {
- u32 msg_length;
- msg = tp->traces[i];
- /*
- * This retarded check required to pass
- * [sic] SA-checking
- */
- if (!msg)
- continue;
-
- msg_length = clib_host_to_net_u32 (vec_len (msg));
- if (fwrite (&msg_length, 1, sizeof (msg_length), fp)
- != sizeof (msg_length))
- {
- return (-14);
- }
-
- if (fwrite (msg, 1, vec_len (msg), fp) != vec_len (msg))
- {
- return (-12);
- }
- }
- /* write beginning of buffer -> oldest-1 */
- for (i = 0; i < tp->curindex; i++)
- {
- u32 msg_length;
- /*sa_ignore NO_NULL_CHK */
- msg = tp->traces[i];
- /*
- * This retarded check required to pass
- * [sic] SA-checking
- */
- if (!msg)
- continue;
-
- msg_length = clib_host_to_net_u32 (vec_len (msg));
- if (fwrite (&msg_length, 1, sizeof (msg_length), fp)
- != sizeof (msg_length))
- {
- return (-14);
- }
-
- if (fwrite (msg, 1, vec_len (msg), fp) != vec_len (msg))
- {
- return (-13);
- }
- }
- }
- return 0;
+ return vl_msg_traverse_trace (tp, vl_api_msg_write_fn, fp);
}
int
@@ -807,16 +873,19 @@ vl_msg_api_socket_handler (void *the_msg)
1 /* do_it */ , 0 /* free_it */ );
}
-#define foreach_msg_api_vector \
-_(msg_names) \
-_(msg_handlers) \
-_(msg_cleanup_handlers) \
-_(msg_endian_handlers) \
-_(msg_print_handlers) \
-_(api_trace_cfg) \
-_(message_bounce) \
-_(is_mp_safe) \
-_(is_autoendian)
+#define foreach_msg_api_vector \
+ _ (msg_names) \
+ _ (msg_handlers) \
+ _ (msg_cleanup_handlers) \
+ _ (msg_endian_handlers) \
+ _ (msg_print_handlers) \
+ _ (msg_print_json_handlers) \
+ _ (msg_tojson_handlers) \
+ _ (msg_fromjson_handlers) \
+ _ (api_trace_cfg) \
+ _ (message_bounce) \
+ _ (is_mp_safe) \
+ _ (is_autoendian)
void
vl_msg_api_config (vl_msg_api_msg_config_t * c)
@@ -855,6 +924,9 @@ vl_msg_api_config (vl_msg_api_msg_config_t * c)
am->msg_cleanup_handlers[c->id] = c->cleanup;
am->msg_endian_handlers[c->id] = c->endian;
am->msg_print_handlers[c->id] = c->print;
+ am->msg_print_json_handlers[c->id] = c->print_json;
+ am->msg_tojson_handlers[c->id] = c->tojson;
+ am->msg_fromjson_handlers[c->id] = c->fromjson;
am->message_bounce[c->id] = c->message_bounce;
am->is_mp_safe[c->id] = c->is_mp_safe;
am->is_autoendian[c->id] = c->is_autoendian;
@@ -862,6 +934,11 @@ vl_msg_api_config (vl_msg_api_msg_config_t * c)
am->api_trace_cfg[c->id].size = c->size;
am->api_trace_cfg[c->id].trace_enable = c->traced;
am->api_trace_cfg[c->id].replay_enable = c->replay;
+
+ if (!am->msg_id_by_name)
+ am->msg_id_by_name = hash_create_string (0, sizeof (uword));
+
+ hash_set_mem (am->msg_id_by_name, c->name, c->id);
}
/*
@@ -870,7 +947,8 @@ vl_msg_api_config (vl_msg_api_msg_config_t * c)
*/
void
vl_msg_api_set_handlers (int id, char *name, void *handler, void *cleanup,
- void *endian, void *print, int size, int traced)
+ void *endian, void *print, int size, int traced,
+ void *print_json, void *tojson, void *fromjson)
{
vl_msg_api_msg_config_t cfg;
vl_msg_api_msg_config_t *c = &cfg;
@@ -888,6 +966,9 @@ vl_msg_api_set_handlers (int id, char *name, void *handler, void *cleanup,
c->message_bounce = 0;
c->is_mp_safe = 0;
c->is_autoendian = 0;
+ c->tojson = tojson;
+ c->fromjson = fromjson;
+ c->print_json = print_json;
vl_msg_api_config (c);
}
@@ -987,7 +1068,7 @@ vl_msg_api_post_mortem_dump (void)
rv = write (2, "\n", 1);
return;
}
- rv = vl_msg_api_trace_save (am, VL_API_TRACE_RX, fp);
+ rv = vl_msg_api_trace_save (am, VL_API_TRACE_RX, fp, 0);
fclose (fp);
if (rv < 0)
{