meta_srv/
node_excluder.rs

1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::sync::Arc;
16
17use common_meta::DatanodeId;
18
19pub type NodeExcluderRef = Arc<dyn NodeExcluder>;
20
21/// [NodeExcluder] is used to help decide whether some nodes should be excluded (out of consideration)
22/// in certain situations. For example, in some node selectors.
23pub trait NodeExcluder: Send + Sync {
24    /// Returns the excluded datanode ids.
25    fn excluded_datanode_ids(&self) -> &Vec<DatanodeId>;
26}
27
28impl NodeExcluder for Vec<DatanodeId> {
29    fn excluded_datanode_ids(&self) -> &Vec<DatanodeId> {
30        self
31    }
32}
meta_srv/node_excluder.rs

meta_srv/
node_excluder.rs
