コード例 #1
0
ファイル: trigger.c プロジェクト: jadedgnome/watchman
/* trigger /root triggername [watch patterns] -- cmd to run
 * Sets up a trigger so that we can execute a command when a change
 * is detected */
void cmd_trigger(struct watchman_client *client, json_t *args)
{
  w_root_t *root;
  struct watchman_trigger_command *cmd;
  json_t *resp;
  json_t *trig;
  char *errmsg = NULL;

  root = resolve_root_or_err(client, args, 1, true);
  if (!root) {
    return;
  }

  if (json_array_size(args) < 3) {
    send_error_response(client, "not enough arguments");
    goto done;
  }

  trig = json_array_get(args, 2);
  if (json_is_string(trig)) {
    trig = build_legacy_trigger(client, args);
    if (!trig) {
      goto done;
    }
  } else {
    // Add a ref so that we don't need to conditionally decref later
    // for the legacy case later
    json_incref(trig);
  }

  cmd = w_build_trigger_from_def(root, trig, &errmsg);
  json_decref(trig);

  if (!cmd) {
    send_error_response(client, "%s", errmsg);
    goto done;
  }

  w_root_lock(root);
  w_ht_replace(root->commands, w_ht_ptr_val(cmd->triggername),
      w_ht_ptr_val(cmd));
  w_root_unlock(root);

  w_state_save();

  resp = make_response();
  set_prop(resp, "triggerid", json_string_nocheck(cmd->triggername->buf));
  send_and_dispose_response(client, resp);

done:
  if (errmsg) {
    free(errmsg);
  }
  w_root_delref(root);
}
コード例 #2
0
ファイル: trigger.c プロジェクト: 0-wiz-0/watchman
/* trigger /root triggername [watch patterns] -- cmd to run
 * Sets up a trigger so that we can execute a command when a change
 * is detected */
static void cmd_trigger(struct watchman_client *client, json_t *args)
{
  w_root_t *root;
  struct watchman_trigger_command *cmd, *old;
  json_t *resp;
  json_t *trig;
  char *errmsg = NULL;
  bool need_save = true;

  root = resolve_root_or_err(client, args, 1, true);
  if (!root) {
    return;
  }

  if (json_array_size(args) < 3) {
    send_error_response(client, "not enough arguments");
    goto done;
  }

  trig = json_array_get(args, 2);
  if (json_is_string(trig)) {
    trig = build_legacy_trigger(root, client, args);
    if (!trig) {
      goto done;
    }
  } else {
    // Add a ref so that we don't need to conditionally decref later
    // for the legacy case later
    json_incref(trig);
  }

  cmd = w_build_trigger_from_def(root, trig, &errmsg);
  json_decref(trig);

  if (!cmd) {
    send_error_response(client, "%s", errmsg);
    goto done;
  }

  resp = make_response();
  set_prop(resp, "triggerid", json_string_nocheck(cmd->triggername->buf));

  w_root_lock(root);

  old = w_ht_val_ptr(w_ht_get(root->commands,
          w_ht_ptr_val(cmd->triggername)));
  if (old && json_equal(cmd->definition, old->definition)) {
    // Same definition: we don't and shouldn't touch things, so that we
    // preserve the associated trigger clock and don't cause the trigger
    // to re-run immediately
    set_prop(resp, "disposition", json_string_nocheck("already_defined"));
    w_trigger_command_free(cmd);
    cmd = NULL;
    need_save = false;
  } else {
    set_prop(resp, "disposition", json_string_nocheck(
          old ? "replaced" : "created"));
    w_ht_replace(root->commands, w_ht_ptr_val(cmd->triggername),
        w_ht_ptr_val(cmd));
    // Force the trigger to be eligible to run now
    root->ticks++;
    root->pending_trigger_tick = root->ticks;
  }
  w_root_unlock(root);

  if (need_save) {
    w_state_save();
  }

  send_and_dispose_response(client, resp);

done:
  if (errmsg) {
    free(errmsg);
  }
  w_root_delref(root);
}