mongoc_gridfs_file_t * mongoc_gridfs_find_one_by_filename (mongoc_gridfs_t *gridfs, const char *filename, bson_error_t *error) BSON_GNUC_WARN_UNUSED_RESULT;
Finds the first file matching the filename specified. If there is an error, NULL is returned and
error is filled out; if there is no error but no matching file is found, NULL is returned and the error code and domain are 0.
This function is considered a retryable read operation.
Upon a transient error (a network error, errors due to replica set failover, etc.) the operation is safely retried once.
retryreads is false in the URI (see mongoc_uri_t) the retry behavior does not apply.
Errors are propagated via the