1 /*
2 * Copyright 2021 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 //! Helper for converting Error types to what Binder expects
18
19 use binder::{IntoBinderResult, Result as BinderResult};
20 use log::warn;
21 use std::fmt::Debug;
22
23 /// Convert a Result<T, E> to BinderResult<T> to allow it to be returned from a binder RPC,
24 /// preserving the content as far as possible.
25 /// Also log the error if there is one.
to_binder_result<T, E: Debug>(result: Result<T, E>) -> BinderResult<T>26 pub fn to_binder_result<T, E: Debug>(result: Result<T, E>) -> BinderResult<T> {
27 result.or_service_specific_exception_with(-1, |e| {
28 let message = format!("{:?}", e);
29 warn!("Returning binder error: {message}");
30 message
31 })
32 }
33