use crate::{
channel_receiver_state::{ChannelReceiverStates, DeliveryCause},
types::{ChannelId, Identifier, PayloadSize},
Result,
};
use parking_lot::Mutex;
use std::{fmt, sync::Arc};
use tracing::trace;
#[derive(Clone, Default)]
pub struct ChannelStatus(Arc<Mutex<Inner>>);
impl ChannelStatus {
pub fn initializing(&self) -> bool {
self.0.lock().state == ChannelState::Initial
}
pub fn closing(&self) -> bool {
self.0.lock().state == ChannelState::Closing
}
pub fn connected(&self) -> bool {
self.0.lock().state == ChannelState::Connected
}
pub(crate) fn can_receive_messages(&self) -> bool {
[ChannelState::Closing, ChannelState::Connected].contains(&self.0.lock().state)
}
pub fn confirm(&self) -> bool {
self.0.lock().confirm
}
pub(crate) fn set_confirm(&self) {
self.0.lock().confirm = true;
trace!("Publisher confirms activated");
}
pub fn state(&self) -> ChannelState {
self.0.lock().state.clone()
}
pub(crate) fn set_state(&self, state: ChannelState) {
self.0.lock().state = state;
}
pub(crate) fn auto_close(&self, id: ChannelId) -> bool {
id != 0 && self.0.lock().state == ChannelState::Connected
}
#[cfg(test)]
pub(crate) fn receiver_state(&self) -> crate::channel_receiver_state::ChannelReceiverState {
self.0.lock().receiver_state.receiver_state()
}
pub(crate) fn set_will_receive(&self, class_id: Identifier, delivery_cause: DeliveryCause) {
self.0
.lock()
.receiver_state
.set_will_receive(class_id, delivery_cause);
}
pub(crate) fn set_content_length<
Handler: FnOnce(&DeliveryCause, bool),
OnInvalidClass: FnOnce(String) -> Result<()>,
OnError: FnOnce(String) -> Result<()>,
>(
&self,
channel_id: ChannelId,
class_id: Identifier,
length: PayloadSize,
handler: Handler,
invalid_class_hanlder: OnInvalidClass,
error_handler: OnError,
) -> Result<()> {
let mut inner = self.0.lock();
let confirm_mode = inner.confirm;
inner.receiver_state.set_content_length(
channel_id,
class_id,
length,
handler,
invalid_class_hanlder,
error_handler,
confirm_mode,
)
}
pub(crate) fn receive<
Handler: FnOnce(&DeliveryCause, PayloadSize, bool),
OnError: FnOnce(String) -> Result<()>,
>(
&self,
channel_id: ChannelId,
length: PayloadSize,
handler: Handler,
error_handler: OnError,
) -> Result<()> {
let mut inner = self.0.lock();
let confirm_mode = inner.confirm;
inner
.receiver_state
.receive(channel_id, length, handler, error_handler, confirm_mode)
}
pub(crate) fn set_send_flow(&self, flow: bool) {
self.0.lock().send_flow = flow;
}
pub(crate) fn flow(&self) -> bool {
self.0.lock().send_flow
}
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub enum ChannelState {
#[default]
Initial,
Connected,
Closing,
Closed,
Error,
}
impl fmt::Debug for ChannelStatus {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut debug = f.debug_struct("ChannelStatus");
if let Some(inner) = self.0.try_lock() {
debug
.field("state", &inner.state)
.field("receiver_state", &inner.receiver_state)
.field("confirm", &inner.confirm)
.field("send_flow", &inner.send_flow);
}
debug.finish()
}
}
struct Inner {
confirm: bool,
send_flow: bool,
state: ChannelState,
receiver_state: ChannelReceiverStates,
}
impl Default for Inner {
fn default() -> Self {
Self {
confirm: false,
send_flow: true,
state: ChannelState::default(),
receiver_state: ChannelReceiverStates::default(),
}
}
}