readme: expanded a bit
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[package]
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name = "bunbun-worker"
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version = "0.1.0"
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description = "An rpc and non-rpc rabbitmq worker for Mediarose"
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description = "An rpc/non-rpc rabbitmq worker library"
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edition = "2021"
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license = "AGPL-3.0"
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authors = ["4o1x5 <4o1x5@4o1x5.dev>"]
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repository = "https://git.4o1x5.dev/4o1x5/bunbun-worker"
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[dependencies]
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55
readme.md
55
readme.md
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@ -1,30 +1,50 @@
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<center> <h1> BunBun-Worker </h1> </center>
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A multithreaded _panic-safe_ job runner built on the AMQP. Bunbun-worker features RPC and nonRPC calls, and can handle multiple types of messages at a time.
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`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.
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> ❗ Disclaimer
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> This crate is still under development, meaning api's may change on every commit...
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# Introduction
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`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.
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### Rpc
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Remote procedure call, as it's name says is a message that can be sent to a remote microservice to be processed and the result to be returned. In `bunbun-worker` it's implemented by the following example:
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```mermaid
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sequenceDiagram
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ServiceA->>+ServiceB: Hey, could you do this job for me?
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Note right of ServiceB: ServiceB does the job
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ServiceB->>+ServiceA: Sure, here is the data result
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```
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1. ServiceA creates a callback queue that the response shall be sent to.
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2. ServiceA sends a json job message to an **already declared** queue on a rabbitmq server.
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3. ServiceB is listening on that queue for messages and spawns a new thread for each received.
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4. Once ServiceB has finished the work, using the received messages header it responds to the callback queue with the correlation-id.
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### Non-rpc
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In `bunbun-worker` regular jobs are called _non-rpc_ jobs, indicating that the response is not awaited.
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## Installation
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Since this package is not published to crates.io you will need to add it manually to `Cargo.toml`
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Get directly from crates.io
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```toml
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[dependencies]
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bunbun-worker = { git = "https://git.4o1x5.dev/4o1x5/bunbun-worker", version = "0.12" }
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bunbun-worker = { version = "0.1.0" }
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```
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or
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or get it directly from source
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```toml
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[dependencies]
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bunbun-worker = { git = "https://git.4o1x5.dev/4o1x5/bunbun-worker", branch = "main" }
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```
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## Motivation
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I have a project called _Mediarose_ in development and I needed a way to have efficient and simple communication between services to kill of circular dependencies.
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## Usage
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Here is a basic implementation of an RPC job in bunbun-worker
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type State = State;
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fn run(
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self,
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state: Arc<Mutex<Self::State>>,
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state: Self::State,
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) -> futures::prelude::future::BoxFuture<'static, Result<Self::Result, Self::ErroredResult>>
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{
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Box::pin(async move {
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.add_rpc_consumer::<EmailJob>(
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"email-emailjob-v1.0.0", // queue name
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"emailjob", // consumer tag
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Arc::new(Mutex::new(State {
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State {
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something: "test".into(), // putting our state into a Arc<Mutex<S>> for thread safety
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})),
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},
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)
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.await;
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tracing::debug!("Starting listener");
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}
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```
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# Limitations
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1. Currently some `unwrap()`'s are called inside the code and may results in panics (not in the job-runner).
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2. No TLS support
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3. No settings, and very limited API
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4. The rabbitmq RPC logic is very basic with no message-versioning (aside using different queue names (see [usage](#usage)) )
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# Bugs department
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Since the code is hosted on a private git instance (as of right now) any bugs shall be discussed in [4o1x5's project room](https://matrix.to/#/#projects:4o1x5.dev).
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## License
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Licensed under [GNU AFFERO GENERAL PUBLIC LICENSE](https://www.gnu.org/licenses/agpl-3.0.en.html)
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### Contribution
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Currently this library does not accept any contributors, as it's hosted on a private registry and git server.
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Currently this library does not accept any contributors, as it's hosted on a private git server.
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# Credits
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@ -184,7 +184,6 @@ impl BunBunWorker {
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match outcome {
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Err(error) => {
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tracing::error!("Failed to start thread for worker {}", error);
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// TODO return erro
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let headers = create_header(ResultHeader::Panic);
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let _ = delivery.ack(BasicAckOptions::default()).await; // acking the delivery
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respond_to_rpc_queue(
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