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MONGOC_FIND_AND_MODIFY_OPTS_SET_MAX_TIME_MS(3) libmongoc MONGOC_FIND_AND_MODIFY_OPTS_SET_MAX_TIME_MS(3)

NAME

mongoc_find_and_modify_opts_set_max_time_ms - mongoc_find_and_modify_opts_set_max_time_ms()

SYNOPSIS

bool
mongoc_find_and_modify_opts_set_max_time_ms (


   mongoc_find_and_modify_opts_t *opts, uint32_t max_time_ms);


PARAMETERS

  • opts: A mongoc_find_and_modify_opts_t.
  • max_time_ms: The maximum server-side execution time permitted, in milliseconds, or 0 to specify no maximum time (the default setting).

DESCRIPTION

Adds a maxTimeMS argument to the builder.

RETURNS

Returns true if it successfully added the option to the builder, otherwise false and logs an error.

Note: although max_time_ms is a uint32_t, it is possible to set it as a uint64_t through the options arguments in some cursor returning functions like mongoc_collection_find_with_opts().

SETTING MAXTIMEMS

opts.c

void
fam_opts (mongoc_collection_t *collection)
{


   mongoc_find_and_modify_opts_t *opts;


   bson_t reply;


   bson_t *update;


   bson_error_t error;


   bson_t query = BSON_INITIALIZER;


   mongoc_write_concern_t *wc;


   bson_t extra = BSON_INITIALIZER;


   bool success;


   /* Find Zlatan Ibrahimovic, the striker */


   BSON_APPEND_UTF8 (&query, "firstname", "Zlatan");


   BSON_APPEND_UTF8 (&query, "lastname", "Ibrahimovic");


   BSON_APPEND_UTF8 (&query, "profession", "Football player");


   /* Bump his age */


   update = BCON_NEW ("$inc", "{", "age", BCON_INT32 (1), "}");


   opts = mongoc_find_and_modify_opts_new ();


   mongoc_find_and_modify_opts_set_update (opts, update);


   /* Abort if the operation takes too long. */


   mongoc_find_and_modify_opts_set_max_time_ms (opts, 100);


   /* Set write concern w: 2 */


   wc = mongoc_write_concern_new ();


   mongoc_write_concern_set_w (wc, 2);


   mongoc_write_concern_append (wc, &extra);


   /* Some future findAndModify option the driver doesn't support conveniently


    */


   BSON_APPEND_INT32 (&extra, "futureOption", 42);


   mongoc_find_and_modify_opts_append (opts, &extra);


   success = mongoc_collection_find_and_modify_with_opts (


      collection, &query, opts, &reply, &error);


   if (success) {


      char *str;


      str = bson_as_canonical_extended_json (&reply, NULL);


      printf ("%s\n", str);


      bson_free (str);


   } else {


      fprintf (


         stderr, "Got error: \"%s\" on line %d\n", error.message, __LINE__);


   }


   bson_destroy (&reply);


   bson_destroy (&extra);


   bson_destroy (update);


   bson_destroy (&query);


   mongoc_write_concern_destroy (wc);


   mongoc_find_and_modify_opts_destroy (opts);
}


AUTHOR

MongoDB, Inc

COPYRIGHT

2017-present, MongoDB, Inc

October 20, 2022 1.23.1