more docs, and examples

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2005 2024-11-15 23:28:35 +01:00
parent d6c41713b9
commit 6a8080a6b1
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101
README.md
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@ -1,13 +1,11 @@
<center> <h1> BunBun-Worker </h1> </center>
`bunbun-worker` is a panic-safe multithreaded job-runner server/client library for rust. It supports [RPC](https://wikipedia.org/wiki/Remote_procedure_call) and regular (non-rpc) calls. As of right now only [rabbitmq](https://www.rabbitmq.com/) is supported but [gRPC](https://grpc.io/) will be added too.
> ❗ Disclaimer
> This crate is still under development, meaning api's may change on every commit...
# Introduction
`bunbun-worker` was made to provide a way for microservices written in rust to communicate to each other by dispatching jobs that may return data and those who don't.
`bunbun-worker` was made to provide a _panic-safe_ multithreaded job-runner server & client for microservices and alike. It supports [RPC](https://wikipedia.org/wiki/Remote_procedure_call) and regular (non-rpc) calls. As of right now only [rabbitmq](https://www.rabbitmq.com/) is supported but [gRPC](https://grpc.io/) will be added too.
### Rpc
@ -35,7 +33,7 @@ Get directly from crates.io
```toml
[dependencies]
bunbun-worker = { version = "0.1.1" }
bunbun-worker = { version = "0.2.0" }
```
or get it directly from source
@ -47,6 +45,101 @@ bunbun-worker = { git = "https://git.4o1x5.dev/4o1x5/bunbun-worker", branch = "m
## Usage
This example uses [DTO](https://en.wikipedia.org/wiki/Data_transfer_object) as a way to transfer data between services.
Add `futures` via `cargo add futures`
```rust
// server.rs
#[derive(Clone, Debug)]
pub struct State {
pub something: String,
}
#[derive(Deserialize, Serialize, Clone, Debug)]
pub struct EmailJob {
send_to: String,
contents: String,
}
#[derive(Deserialize, Serialize, Clone, Debug, PartialEq)]
pub struct EmailJobResult {
contents: String,
}
impl RPCTask for EmailJob {
type ErroredResult = EmailJobResultError;
type Result = EmailJobResult;
type State = State;
fn run(
self,
state: Arc<Self::State>,
) -> futures::prelude::future::BoxFuture<'static, Result<Self::Result, Self::ErroredResult>>
{
async move {
tracing::info!("Sent email to {}", self.send_to);
tokio::time::sleep(Duration::from_secs(2)).await;
return Ok(EmailJobResult {
contents: self.contents.clone(),
});
}
.boxed()
}
}
#[tokio::main]
async fn main() {
let mut listener = Worker::new(
env::var("AMQP_SERVER_URL").unwrap(),
WorkerConfig::default(),
)
.await;
listener
.add_rpc_consumer::<EmailJob>(
Arc::new(State {
something: "test".into(),
}),
ListenerConfig::default("emailjob").set_prefetch_count(100),
);
listener.start_all_listeners().await;
}
```
```rust
// client.rs
#[derive(Deserialize, Serialize, Clone, Debug)]
pub struct EmailJob {
send_to: String,
contents: String,
}
#[derive(Deserialize, Serialize, Clone, Debug, PartialEq)]
pub struct EmailJobResult {
contents: String,
}
// Implement the client side trait, so the caller knows what the return types are
impl RPCClientTask for EmailJob {
type ErroredResult = EmailJobResultError;
type Result = EmailJobResult;
}
#[tokio::main]
async fn main() {
let client = Client::new(env::var("AMQP_SERVER_URL").unwrap().as_str())
.await
.unwrap();
let result = client
.rpc_call::<EmailJob>(
EmailJob {
send_to: "someone".into(),
contents: "something".into(),
},
BasicCallOptions::default("emailjob").timeout(Duration::from_secs(3)),
)
.await
.unwrap();
println!("{:?}",result);
}
```
### Message versioning
In this crate message versioning is done by including `v1.0.0` or such on the end of the queue name, instead of including it in the headers of a message. This reduces the amount of redelivered messages.

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@ -270,7 +270,7 @@ impl Worker {
/// server.add_rpc_consumer::<MyRPCTask>(ListenerConfig::default("service-jobname").set_message_version("v2.0.0") ));
/// server.start_all_listeners().await;
/// ```
pub async fn add_rpc_consumer<J: RPCTask + 'static + Send>(
pub fn add_rpc_consumer<J: RPCTask + 'static + Send>(
&mut self,
state: Arc<J::State>,
listener_config: ListenerConfig,
@ -489,7 +489,7 @@ impl Worker {
}
/// A trait that defines the structure of a task that can be run by the worker
/// BoxFuture is from a crate called `futures_util`
/// BoxFuture is from a crate called `futures`
///
/// # Examples
/// ```

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@ -107,14 +107,12 @@ mod test {
WorkerConfig::default(),
)
.await;
listener
.add_rpc_consumer::<EmailJob>(
Arc::new(State {
something: "test".into(),
}),
ListenerConfig::default("emailjob").set_prefetch_count(100),
)
.await;
listener.add_rpc_consumer::<EmailJob>(
Arc::new(State {
something: "test".into(),
}),
ListenerConfig::default("emailjob").set_prefetch_count(100),
);
tracing::debug!("Starting listener");
listener.start_all_listeners().await;
signal::ctrl_c().await.expect("failed to listen for event");
@ -128,14 +126,12 @@ mod test {
WorkerConfig::default(),
)
.await;
listener
.add_rpc_consumer::<PanickingEmailJob>(
Arc::new(State {
something: "test".into(),
}),
ListenerConfig::default("emailjob").set_prefetch_count(100),
)
.await;
listener.add_rpc_consumer::<PanickingEmailJob>(
Arc::new(State {
something: "test".into(),
}),
ListenerConfig::default("emailjob").set_prefetch_count(100),
);
tracing::debug!("Starting listener");
let out = timeout(Duration::from_secs(5), listener.start_all_listeners()).await;
}