whispeer 0.0.1

A plugin-based pub/sub messaging system
Documentation 
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use async_trait::async_trait;
use std::any::Any;
use std::collections::HashMap;

use crate::broker::{Subscriber, subscriber::AsyncHandler};

#[async_trait]
pub trait Plugin: Send + Sync {
  fn name(&self) -> &str;

  async fn on_init(&mut self, _broker: &crate::Broker) -> Result<(), anyhow::Error> {
    Ok(())
  }

  async fn on_publish(
    &self,
    topic: &str,
    payload: &mut Vec<u8>,
    headers: &mut HashMap<String, String>,
  ) -> Result<(), anyhow::Error>;

  async fn on_message_received(
    &self,
    topic: &str,
    payload: &mut Vec<u8>,
    headers: &HashMap<String, String>,
  ) -> Result<(), anyhow::Error>;

  async fn on_before_recieved(
    &self,
    topic: &str,
    _payload: &mut Vec<u8>,
    _headers: &mut HashMap<String, String>,
  ) -> Result<String, anyhow::Error> {
    Ok(topic.to_string())
  }

  async fn on_subscribe(
    &self,
    _topic: &str,
  ) -> Result<(), anyhow::Error> {
    Ok(())
  }
}