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;
- gridfs: A mongoc_gridfs_t.
- filename: A UTF-8 encoded string containing the filename.
- error: An optional location for a bson_error_t or NULL.
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. If retryreads is false in the URI (see mongoc_uri_t) the retry behavior does not apply.
Errors are propagated via the error parameter.
Returns a newly allocated mongoc_gridfs_file_t if successful. You must free the resulting file with mongoc_gridfs_file_destroy() when no longer in use.
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