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Add new packages, dependencies to Cargo.lock, and modify Cargo.toml.
Code changes: import `EtcdElectionClient`, update import path, define `ElectionHandle` as tuple. Added new code block for #[cfg(not(madsim))] and #[cfg(test)] module.
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// Copyright 2023 RisingWave Labs | ||
// | ||
// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
pub mod etcd; | ||
pub mod sql; | ||
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use serde::Serialize; | ||
use tokio::sync::watch::Receiver; | ||
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use crate::MetaResult; | ||
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const META_ELECTION_KEY: &str = "__meta_election_"; | ||
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#[derive(Debug, Serialize)] | ||
pub struct ElectionMember { | ||
pub id: String, | ||
pub is_leader: bool, | ||
} | ||
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#[async_trait::async_trait] | ||
pub trait ElectionClient: Send + Sync + 'static { | ||
fn id(&self) -> MetaResult<String>; | ||
async fn run_once(&self, ttl: i64, stop: Receiver<()>) -> MetaResult<()>; | ||
fn subscribe(&self) -> Receiver<bool>; | ||
async fn leader(&self) -> MetaResult<Option<ElectionMember>>; | ||
async fn get_members(&self) -> MetaResult<Vec<ElectionMember>>; | ||
async fn is_leader(&self) -> bool; | ||
} |
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