juiz_core 0.0.9

Core library for JUIZ application. This package is not required if you want to build juiz functional module.
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use std::{
    ops::Deref,
    sync::{
        mpsc::{self, Sender},
        Arc, Mutex,
    },
    time::Duration,
};

use juiz_sdk::anyhow;

use super::super::core_broker::CoreBrokerPtr;
use crate::brokers::create_messenger_broker_factory;
use crate::brokers::{BrokerFactory, MessengerBrokerCore, MessengerBrokerCoreFactory};
use crate::prelude::*;

#[allow(unused)]
pub struct ByteSenderReceiverPair(pub Sender<Vec<u8>>, pub mpsc::Receiver<Vec<u8>>);
pub struct BrokerSideSenderReceiverPair(pub Sender<CapsulePtr>, pub mpsc::Receiver<CapsuleMap>);
pub struct ProxySideSenderReceiverPair(pub Sender<CapsuleMap>, pub mpsc::Receiver<CapsulePtr>);
// pub type LocalBroker = MessengerBroker;

#[allow(dead_code)]
pub struct LocalBrokerCore {
    sender_receiver: Arc<Mutex<BrokerSideSenderReceiverPair>>,
    byte_sender_receiver: Arc<Mutex<ByteSenderReceiverPair>>,
}

impl std::fmt::Debug for LocalBrokerCore {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.debug_struct("LocalBrokerCore")
            .field("sender_receiver", &"BrokerSideSenderReceiverPair")
            .field("byte_sender_receiver", &"ByteSenderReceiverPair")
            .finish()
    }
}

impl MessengerBrokerCore for LocalBrokerCore {
    fn receive_and_send(
        &self,
        timeout: Duration,
        func: Arc<Mutex<dyn Fn(CapsuleMap) -> JuizResult<CapsulePtr>>>,
    ) -> JuizResult<Capsule> {
        let sendr_recvr = juiz_lock(&self.sender_receiver)?;
        let BrokerSideSenderReceiverPair(sendr, recvr) = sendr_recvr.deref();
        match recvr.recv_timeout(timeout) {
            Err(_e) => Ok(Capsule::from(jvalue!({}))),
            Ok(value) => {
                log::trace!("LocalBrokerCore::receive_and_send() received some data.");
                let ret_value = match (juiz_lock(&func)?)(value) {
                    Ok(v) => v,
                    Err(e) => {
                        log::error!("User function call in MessengerBrokerCore::receive_and_send() failed. Error is {}", e.to_string());
                        return Err(e);
                    }
                };
                log::trace!("LocalBrokerCore now sending back data.");
                match sendr.send(ret_value) {
                    Err(e) => {
                        log::error!("Error({e:?}) in LocalBroker::routine()");
                        log::trace!("LocalBrokerCore::receive_and_send() exit");
                        Err(anyhow::Error::from(JuizError::BrokerSendError {}))
                    }
                    Ok(()) => {
                        log::trace!("LocalBrokerCore collectly sent data.");
                        log::trace!("LocalBrokerCore::receive_and_send() exit");
                        Ok(jvalue!({}).into())
                    }
                }
            }
        }
    }
}

impl LocalBrokerCore {
    pub fn new(
        sender_receiver: Arc<Mutex<BrokerSideSenderReceiverPair>>,
        byte_sender_receiver: Arc<Mutex<ByteSenderReceiverPair>>,
    ) -> JuizResult<Arc<Mutex<dyn MessengerBrokerCore>>> {
        Ok(Arc::new(Mutex::new(LocalBrokerCore {
            byte_sender_receiver,
            sender_receiver,
        })))
    }
}

pub struct LocalBrokerCoreFactory {
    sender_receiver: Arc<Mutex<BrokerSideSenderReceiverPair>>,
    byte_sender_receiver: Arc<Mutex<ByteSenderReceiverPair>>,
}

impl LocalBrokerCoreFactory {
    pub fn new(
        sender_receiver: Arc<Mutex<BrokerSideSenderReceiverPair>>,
        byte_sender_receiver: Arc<Mutex<ByteSenderReceiverPair>>,
    ) -> Box<LocalBrokerCoreFactory> {
        Box::new(LocalBrokerCoreFactory {
            sender_receiver,
            byte_sender_receiver,
        })
    }
}

impl MessengerBrokerCoreFactory for LocalBrokerCoreFactory {
    fn create(&self, _manifest: &Value) -> JuizResult<Arc<Mutex<dyn MessengerBrokerCore>>> {
        LocalBrokerCore::new(
            self.sender_receiver.clone(),
            self.byte_sender_receiver.clone(),
        )
    }
}

pub fn create_local_broker_factory(
    core_broker: CoreBrokerPtr,
    sender_receiver: Arc<Mutex<BrokerSideSenderReceiverPair>>,
    byte_sender_receiver: Arc<Mutex<ByteSenderReceiverPair>>,
) -> JuizResult<Arc<Mutex<dyn BrokerFactory>>> {
    log::trace!("create_local_broker_factory called");
    create_messenger_broker_factory(
        "LocalBrokerProxyFactory",
        "local",
        core_broker,
        LocalBrokerCoreFactory::new(sender_receiver, byte_sender_receiver),
    )
}