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telemetry: add default callback commands

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The default commands are now added to provide the list of commands
available, help text for a specified command, and also information
about DPDK and telemetry.

Signed-off-by: Ciara Power <ciara.power@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Keith Wiles <keith.wiles@intel.com>
This commit is contained in:
Ciara Power 2020-04-30 17:01:27 +01:00 committed by Thomas Monjalon
parent ed1bfad7d3
commit f38748736e
1 changed files with 51 additions and 0 deletions
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51
lib/librte_telemetry/telemetry.c
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@ -73,6 +73,51 @@ rte_telemetry_register_cmd(const char *cmd, telemetry_cb fn, const char *help)
return 0;
}
static int
list_commands(const char *cmd __rte_unused, const char *params __rte_unused,
struct rte_tel_data *d)
{
int i;
rte_tel_data_start_array(d, RTE_TEL_STRING_VAL);
for (i = 0; i < num_callbacks; i++)
rte_tel_data_add_array_string(d, callbacks[i].cmd);
return 0;
}
static int
json_info(const char *cmd __rte_unused, const char *params __rte_unused,
struct rte_tel_data *d)
{
rte_tel_data_start_dict(d);
rte_tel_data_add_dict_string(d, "version", rte_version());
rte_tel_data_add_dict_int(d, "pid", getpid());
rte_tel_data_add_dict_int(d, "max_output_len", MAX_OUTPUT_LEN);
return 0;
}
static int
command_help(const char *cmd __rte_unused, const char *params,
struct rte_tel_data *d)
{
int i;
if (!params)
return -1;
rte_tel_data_start_dict(d);
rte_spinlock_lock(&callback_sl);
for (i = 0; i < num_callbacks; i++)
if (strcmp(params, callbacks[i].cmd) == 0) {
rte_tel_data_add_dict_string(d, params,
callbacks[i].help);
break;
}
rte_spinlock_unlock(&callback_sl);
if (i == num_callbacks)
return -1;
return 0;
}
static void
output_json(const char *cmd, const struct rte_tel_data *d, int s)
{
@ -296,6 +341,12 @@ telemetry_v2_init(const char *runtime_dir)
{
pthread_t t_new;
rte_telemetry_register_cmd("/", list_commands,
"Returns list of available commands, Takes no parameters");
rte_telemetry_register_cmd("/info", json_info,
"Returns DPDK Telemetry information. Takes no parameters");
rte_telemetry_register_cmd("/help", command_help,
"Returns help text for a command. Parameters: string command");
v2_socket.fn = client_handler;
if (strlcpy(v2_socket.path, get_socket_path(runtime_dir, 2),
sizeof(v2_socket.path)) >= sizeof(v2_socket.path)) {