# etcd-client
[![Minimum rustc version](https://img.shields.io/badge/rustc-1.64+-lightgray.svg)](https://github.com/etcdv3/etcd-client#rust-version-requirements)
[![Crate](https://img.shields.io/crates/v/etcd-client.svg)](https://crates.io/crates/etcd-client)
[![API](https://docs.rs/etcd-client/badge.svg)](https://docs.rs/etcd-client)
[![License: Apache](https://img.shields.io/badge/License-Apache%202.0-red.svg)](LICENSE-APACHE)
OR
[![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE-MIT)
An [etcd](https://github.com/etcd-io/etcd) v3 API client for Rust.
It provides asynchronous client backed by [tokio](https://github.com/tokio-rs/tokio) and [tonic](https://github.com/hyperium/tonic).
## Features
- etcd API v3
- asynchronous
## Supported APIs
- [x] KV
- [x] Watch
- [x] Lease
- [x] Auth
- [x] Maintenance
- [x] Cluster
- [x] Lock
- [x] Election
## Usage
Add this to your `Cargo.toml`:
```toml
[dependencies]
etcd-client = "0.12"
tokio = { version = "1.0", features = ["full"] }
```
To get started using `etcd-client`:
```rust
use etcd_client::{Client, Error};
#[tokio::main]
async fn main() -> Result<(), Error> {
let mut client = Client::connect(["localhost:2379"], None).await?;
// put kv
client.put("foo", "bar", None).await?;
// get kv
let resp = client.get("foo", None).await?;
if let Some(kv) = resp.kvs().first() {
println!("Get kv: {{{}: {}}}", kv.key_str()?, kv.value_str()?);
}
Ok(())
}
```
## Examples
Examples can be found in [`examples`](./examples).
## Feature Flags
- `tls`: Enables the `rustls`-based TLS connection. Not enabled by default.
- `tls-roots`: Adds system trust roots to `rustls`-based TLS connection using the `rustls-native-certs` crate. Not enabled by default.
- `pub-response-field`: Exposes structs used to create regular `etcd-client` responses including internal protobuf representations. Useful for mocking. Not enabled by default.
- `tls-openssl`: Enables the `openssl`-based TLS connections. This would make your binary dynamically link to `libssl`.
- `tls-openssl-vendored`: Like `tls-openssl`, however compile openssl from source code and statically link to it.
## Test
We test this library with etcd 3.5.
Notes that we use a fixed `etcd` server URI (localhost:2379) to connect to etcd server.
## Rust version requirements
The minimum supported version is 1.64. The current `etcd-client` version is not guaranteed to build on Rust versions earlier than the minimum supported version.
## License
Dual-licensed to be compatible with the Rust project.
Licensed under the Apache License, Version 2.0 http://www.apache.org/licenses/LICENSE-2.0 or the MIT license http://opensource.org/licenses/MIT, at your option. This file may not be copied, modified, or distributed except according to those terms.
## Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in `etcd-client` by you, shall be licensed as Apache-2.0 and MIT, without any additional
terms or conditions.