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//! WsConnection struct
use core::fmt::{Debug, Formatter};
use ewebsock::{WsEvent, WsMessage, WsReceiver, WsSender};
use std::vec;
use crate::interface::interface_types::InterfaceTrait;
use crate::interface::types::BaseMessage;
use crate::tramex_error;
use crate::{data::Data, errors::TramexError};
use crate::interface::{layer::Layers, log_get::LogGet, types::WebSocketLog};
/// WsConnection struct
pub struct WsConnection {
/// WebSocket sender
pub ws_sender: WsSender,
/// WebSocket receiver
pub ws_receiver: WsReceiver,
/// Message ID
pub msg_id: u64,
/// Connecting flag
pub connecting: bool,
/// Asking size max
pub asking_size_max: u64,
/// Available flag
pub available: bool,
/// Name of the receiver
pub name: String,
}
impl WsConnection {
/// Create a new WsConnection
pub fn new(ws_sender: WsSender, ws_receiver: WsReceiver) -> Self {
Self {
ws_sender,
ws_receiver,
msg_id: 1,
connecting: true,
asking_size_max: 1024,
available: true,
name: "".to_string(),
}
}
/// Connect to a WebSocket
/// # Errors
/// Return an error as String if the connection failed - see [`ewebsock::connect_with_wakeup`] for more details
pub fn connect(url: &str, wakeup: impl Fn() + Send + Sync + 'static) -> Result<(WsSender, WsReceiver), String> {
let options = ewebsock::Options::default();
ewebsock::connect_with_wakeup(url, options, wakeup)
}
/// Try to close the ws
/// # Errors
/// Return an error if its fail see [`ewebsock::WsSender::close`] for more details
pub fn close_impl(&mut self) -> Result<(), TramexError> {
if let Err(err) = self.ws_sender.close() {
log::error!("Error closing WebSocket: {}", err);
return Err(tramex_error!(
err.to_string(),
crate::errors::ErrorCode::WebSocketErrorClosing
));
}
Ok(())
}
}
impl InterfaceTrait for WsConnection {
fn get_more_data(&mut self, layer_list: Layers, _data: &mut Data) -> Result<(), Vec<TramexError>> {
let msg = LogGet::new(self.msg_id, layer_list, self.asking_size_max);
log::debug!("Sending message: {:?}", msg);
match serde_json::to_string(&msg) {
Ok(msg_stringed) => {
log::debug!("{}", msg_stringed);
self.ws_sender.send(WsMessage::Text(msg_stringed));
self.msg_id += 1;
}
Err(err) => {
log::error!("Error encoding message: {:?}", err);
return Err(vec![tramex_error!(
err.to_string(),
crate::errors::ErrorCode::WebSocketErrorEncodingMessage
)]);
}
}
Ok(())
}
fn close(&mut self) -> Result<(), TramexError> {
self.close_impl()
}
}
impl WsConnection {
/// Try to receive data
/// # Errors
/// Return an error if the data is not received correctly
pub fn try_recv(&mut self, data: &mut Data) -> Result<(), Vec<TramexError>> {
while let Some(event) = self.ws_receiver.try_recv() {
self.connecting = false;
match event {
WsEvent::Message(msg) => {
self.available = true;
match msg {
WsMessage::Text(event_text) => {
let decoded: Result<WebSocketLog, serde_json::Error> = serde_json::from_str(&event_text);
match decoded {
Ok(decoded_data) => {
let mut errors = vec![];
for one_log in decoded_data.logs {
match one_log.extract_data() {
Ok(trace) => {
data.events.push(trace);
}
Err(err) => {
log::error!("Error while extracting data: {:?}", err);
errors.push(err);
}
}
}
if !errors.is_empty() {
return Err(errors);
}
}
Err(_err) => {
let decoded_base: Result<BaseMessage, serde_json::Error> =
serde_json::from_str(&event_text);
match decoded_base {
Ok(decoded_data) => {
if decoded_data.message == "ready" {
log::debug!("Received ready message");
}
log::debug!("Received BaseMessage: {:?}", decoded_data);
self.name = decoded_data.name;
}
Err(err) => {
log::error!("Error decoding message: {:?}", err);
log::error!("Message: {:?}", event_text);
return Err(vec![tramex_error!(
err.to_string(),
crate::errors::ErrorCode::WebSocketErrorDecodingMessage
)]);
}
}
}
}
}
WsMessage::Unknown(str_error) => {
log::error!("Unknown message: {:?}", str_error);
return Err(vec![tramex_error!(
str_error,
crate::errors::ErrorCode::WebSocketUnknownMessageReceived
)]);
}
WsMessage::Binary(bin) => {
log::error!("Unknown binary message: {:?}", bin);
return Err(vec![tramex_error!(
format!("Unknown binary message: {:?}", bin),
crate::errors::ErrorCode::WebSocketUnknownBinaryMessageReceived
)]);
}
_ => {
log::debug!("Received Ping-Pong")
}
}
}
WsEvent::Opened => {
self.available = true;
log::debug!("WebSocket opened");
}
WsEvent::Closed => {
self.available = false;
log::debug!("WebSocket closed");
return Err(vec![tramex_error!(
"WebSocket closed".to_string(),
crate::errors::ErrorCode::WebSocketClosed
)]);
}
WsEvent::Error(str_err) => {
self.available = false;
log::error!("WebSocket error: {:?}", str_err);
return Err(vec![tramex_error!(str_err, crate::errors::ErrorCode::WebSocketError)]);
}
}
}
Ok(())
}
}
impl Debug for WsConnection {
fn fmt(&self, formatter: &mut Formatter<'_>) -> core::fmt::Result {
return formatter
.debug_struct("Interface")
.field("ws_sender", &"Box<WsSender>")
.field("ws_receiver", &"Box<WsReceiver>")
.field("connecting", &self.connecting)
.finish();
}
}
impl Drop for WsConnection {
fn drop(&mut self) {
log::debug!("Cleaning WsConnection");
if let Err(err) = self.ws_sender.close() {
log::error!("Error closing WebSocket: {}", err);
}
}
}