api: 'api trace' CLI consumes a line of input

Type: improvement

allows the CLI command to be used from a config file

Change-Id: Id9e7ad71b208317a65b1ed4065b0cb8777aee6ec
Signed-off-by: Neale Ranns <nranns@cisco.com>

diff --git a/src/vlibmemory/vlib_api_cli.c b/src/vlibmemory/vlib_api_cli.c
index 5c9762e..5a06c65 100755 (executable)
--- a/src/vlibmemory/vlib_api_cli.c
+++ b/src/vlibmemory/vlib_api_cli.c
@@ -680,6 +680,7 @@ static clib_error_t *
 api_trace_command_fn (vlib_main_t * vm,
                      unformat_input_t * input, vlib_cli_command_t * cmd)
 {
+  unformat_input_t _line_input, *line_input = &_line_input;
   u32 nitems = 256 << 10;
   api_main_t *am = vlibapi_get_main ();
   vl_api_trace_which_t which = VL_API_TRACE_RX;
@@ -690,24 +691,28 @@ api_trace_command_fn (vlib_main_t * vm,
   FILE *fp;
   int rv;
 
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
-      if (unformat (input, "on") || unformat (input, "enable"))
+      if (unformat (line_input, "on") || unformat (line_input, "enable"))
        {
-         if (unformat (input, "nitems %d", &nitems))
+         if (unformat (line_input, "nitems %d", &nitems))
            ;
          vlib_worker_thread_barrier_sync (vm);
          vl_msg_api_trace_configure (am, which, nitems);
          vl_msg_api_trace_onoff (am, which, 1 /* on */ );
          vlib_worker_thread_barrier_release (vm);
        }
-      else if (unformat (input, "off"))
+      else if (unformat (line_input, "off"))
        {
          vlib_worker_thread_barrier_sync (vm);
          vl_msg_api_trace_onoff (am, which, 0);
          vlib_worker_thread_barrier_release (vm);
        }
-      else if (unformat (input, "save %s", &filename))
+      else if (unformat (line_input, "save %s", &filename))
        {
          if (strstr ((char *) filename, "..")
              || index ((char *) filename, '/'))
@@ -751,49 +756,49 @@ api_trace_command_fn (vlib_main_t * vm,
            vlib_cli_output (vm, "API trace saved to %s\n", chroot_filename);
          goto out;
        }
-      else if (unformat (input, "dump %s", &filename))
+      else if (unformat (line_input, "dump %s", &filename))
        {
          vl_msg_api_process_file (vm, filename, first, last, DUMP);
        }
-      else if (unformat (input, "custom-dump %s", &filename))
+      else if (unformat (line_input, "custom-dump %s", &filename))
        {
          vl_msg_api_process_file (vm, filename, first, last, CUSTOM_DUMP);
        }
-      else if (unformat (input, "replay %s", &filename))
+      else if (unformat (line_input, "replay %s", &filename))
        {
          vl_msg_api_process_file (vm, filename, first, last, REPLAY);
        }
-      else if (unformat (input, "initializers %s", &filename))
+      else if (unformat (line_input, "initializers %s", &filename))
        {
          vl_msg_api_process_file (vm, filename, first, last, INITIALIZERS);
        }
-      else if (unformat (input, "tx"))
+      else if (unformat (line_input, "tx"))
        {
          which = VL_API_TRACE_TX;
        }
-      else if (unformat (input, "first %d", &first))
+      else if (unformat (line_input, "first %d", &first))
        {
          ;
        }
-      else if (unformat (input, "last %d", &last))
+      else if (unformat (line_input, "last %d", &last))
        {
          ;
        }
-      else if (unformat (input, "status"))
+      else if (unformat (line_input, "status"))
        {
          vlib_cli_output (vm, "%U", format_vl_msg_api_trace_status,
                           am, which);
        }
-      else if (unformat (input, "free"))
+      else if (unformat (line_input, "free"))
        {
          vlib_worker_thread_barrier_sync (vm);
          vl_msg_api_trace_onoff (am, which, 0);
          vl_msg_api_trace_free (am, which);
          vlib_worker_thread_barrier_release (vm);
        }
-      else if (unformat (input, "post-mortem-on"))
+      else if (unformat (line_input, "post-mortem-on"))
        vl_msg_api_post_mortem_dump_enable_disable (1 /* enable */ );
-      else if (unformat (input, "post-mortem-off"))
+      else if (unformat (line_input, "post-mortem-off"))
        vl_msg_api_post_mortem_dump_enable_disable (0 /* enable */ );
       else
        return clib_error_return (0, "unknown input `%U'",
@@ -802,6 +807,7 @@ api_trace_command_fn (vlib_main_t * vm,
 out:
   vec_free (filename);
   vec_free (chroot_filename);
+  unformat_free (line_input);
   return 0;
 }