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a3f2c33d04 Add renovate.json
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@ -645,7 +645,7 @@ dependencies = [
[[package]] [[package]]
name = "noleader" name = "noleader"
version = "0.1.2" version = "0.1.1"
dependencies = [ dependencies = [
"anyhow", "anyhow",
"async-nats", "async-nats",

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@ -22,9 +22,9 @@ This library is still young and the API is subject to change.
## Intended use-case ## Intended use-case
Noleader is not built for distributed consensus, or fast re-election procedures. It take upwards to a minute to get re-elected, state is the users responsibility to handle. Noleader is not built for distributed consensus, or fast re-election produces. It take upwards to a minute to get reelected, state is the users responsibility to handle.
Noleader is pretty much just a distributed lock, intended for use-cases where the user wants to only have a single node scheduling work etc. Noleader is pretty much just a distributed lock, intended for use-cases where the use wants to only have a single node scheduling work etc.
Good alternatives are: Good alternatives are:
@ -97,14 +97,29 @@ async fn main() -> anyhow::Result<()> {
} }
``` ```
## Examples ## API Overview
See the examples folder in ./crates/noleader/examples * **`Leader::new(bucket: &str, key: &str, client: async_nats::Client) -> Leader`**
Create a new election participant.
* **`create_bucket(&self) -> anyhow::Result<()>`**
Ensures the KV bucket exists (no-op if already created).
* **`start(&self, token: CancellationToken) -> anyhow::Result<()>`**
Begins the background leader-election loop; renews TTL on success or retries on failure.
* **`do_while_leader<F, Fut>(&self, f: F) -> anyhow::Result<()>`**
Runs your closure as long as you hold leadership; cancels immediately on loss.
* **`leader_id(&self) -> Uuid`**
Returns your unique candidate ID.
* **`is_leader(&self) -> Status`**
Returns `Status::Leader` or `Status::Candidate`, taking shutdown into account.
## Architecture ### Types
Noleader uses a simple election stealing
```rust
pub enum Status {
Leader,
Candidate,
}
```
## License ## License

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{
"$schema": "https://docs.renovatebot.com/renovate-schema.json"
}