mirror of
https://codeberg.org/Fl1tzi/microdeck.git
synced 2024-05-06 05:31:55 +00:00
225 lines
7.6 KiB
Rust
225 lines
7.6 KiB
Rust
use crate::{
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config::{Button, ConfigError, DeviceConfig},
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modules::{retrieve_module_from_name, start_module, HostEvent},
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unwrap_or_error,
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};
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use deck_driver as streamdeck;
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use hidapi::HidApi;
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use std::{collections::HashMap, fmt::Display, sync::Arc};
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use streamdeck::{
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asynchronous::{AsyncStreamDeck, ButtonStateUpdate},
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info::Kind,
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StreamDeckError,
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};
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use tokio::{
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process::Command,
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runtime::Runtime,
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sync::mpsc::{self, error::TrySendError},
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};
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use tracing::{debug, error, info_span, trace};
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/// A module controller in holding the information of a Module
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pub type ModuleController = (Arc<Button>, Option<mpsc::Sender<HostEvent>>);
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pub enum DeviceError {
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DriverError(StreamDeckError),
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Config(ConfigError),
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}
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impl Display for DeviceError {
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fn fmt(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
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match self {
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DeviceError::DriverError(e) => write!(formatter, "Driver: {}", e),
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DeviceError::Config(e) => write!(formatter, "Config: {}", e),
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}
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}
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}
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/// Handles everything related to a single device
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pub struct Device {
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modules: HashMap<u8, ModuleController>,
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device: Arc<AsyncStreamDeck>,
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modules_runtime: Option<Runtime>,
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config: DeviceConfig,
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serial: String,
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}
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impl Device {
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pub async fn new(
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serial: String,
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kind: Kind,
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device_conf: DeviceConfig,
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hid: &HidApi,
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) -> Result<Device, DeviceError> {
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// connect to deck or continue to next
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let deck = match AsyncStreamDeck::connect(hid, kind, &serial) {
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Ok(deck) => deck,
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Err(e) => return Err(DeviceError::DriverError(e)),
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};
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// set brightness
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deck.set_brightness(device_conf.brightness).await.unwrap();
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// reset
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deck.reset().await.unwrap();
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// initialize buttons
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let button_count = kind.key_count();
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// CONFIG VALIDATING
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for button in device_conf.buttons.as_slice().into_iter() {
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let _span_button = info_span!("button", index = button.index).entered();
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// if the index of the button is higher than the button count
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if button_count < button.index {
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return Err(DeviceError::Config(ConfigError::ButtonDoesNotExist(
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button.index,
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)));
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}
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}
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Ok(Device {
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modules: HashMap::new(),
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device: deck,
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modules_runtime: None,
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config: device_conf,
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serial,
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})
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}
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/// Create the runtime for all the modules and iterate through all the buttons to create their
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/// modules.
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pub async fn init_modules(&mut self) {
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if self.modules_runtime.is_none() {
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self.modules_runtime = Some(Runtime::new().unwrap());
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}
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for i in 0..self.config.buttons.len() {
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let button = self.config.buttons.get(i).unwrap().to_owned();
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unwrap_or_error!(self._create_module(button).await);
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}
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}
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/// spawn the module onto the runtime
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async fn _create_module(&mut self, btn: Arc<Button>) -> Result<(), DeviceError> {
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let runtime = self
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.modules_runtime
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.as_ref()
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.expect("Runtime has to be created before module can be spawned");
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let (module_sender, module_receiver) = mpsc::channel(4);
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if let Some(module) = retrieve_module_from_name(&btn.module) {
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{
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// initialize the module
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let ser = self.serial.clone();
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let dev = self.device.clone();
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let b = btn.clone();
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runtime.spawn(async move {
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start_module(ser, b, module, dev, module_receiver).await
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});
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}
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// if the receiver already dropped the listener then just directly insert none.
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// Optimizes performance because the key_listener just does not try to send the event.
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if module_sender.is_closed() {
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self.modules.insert(btn.index, (btn.clone(), None));
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} else {
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self.modules.insert(btn.index, (btn.clone(), Some(module_sender)));
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}
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return Ok(());
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} else {
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return Err(DeviceError::Config(ConfigError::ModuleDoesNotExist(
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btn.index,
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btn.module.to_owned(),
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)));
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}
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}
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pub fn serial(&self) -> String {
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self.serial.clone()
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}
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/// shutdown the runtime and therefore kill all the modules
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fn drop(&mut self) {
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if let Some(handle) = self.modules_runtime.take() {
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handle.shutdown_background();
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}
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}
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/// if there is no runtime left or the runtime never got initialized
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pub fn is_dropped(&self) -> bool {
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self.modules_runtime.is_none()
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}
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/// if this device holds any modules
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pub fn has_modules(&self) -> bool {
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!self.modules.is_empty()
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}
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/// listener for button press changes on the device
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#[tracing::instrument(skip_all, fields(serial = self.serial))]
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pub async fn key_listener(&mut self) {
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loop {
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match self.device.get_reader().read(7.0).await {
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Ok(v) => {
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trace!("{:?}", v);
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for update in v {
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self.button_state_update(update).await;
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}
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}
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Err(e) => match e {
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StreamDeckError::HidError(e) => {
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error!("Shutting down device because of: {e}");
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self.drop();
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break;
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}
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_ => error!("{e}"),
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},
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}
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}
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}
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/// Handle all incoming button state updates from the listener (shell actions, module sender)
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async fn button_state_update(&mut self, event: ButtonStateUpdate) {
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// get the index out of the enum...
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let index = match event {
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ButtonStateUpdate::ButtonUp(i) => i,
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ButtonStateUpdate::ButtonDown(i) => i
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};
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// try to get config for the module
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let options = match self.modules.get_mut(&index) {
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Some(options) => options,
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None => return
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};
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// action will only be some if on_click/on_release is specified in config
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let (action, event) = match event {
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ButtonStateUpdate::ButtonDown(_) => (&options.0.on_click, HostEvent::ButtonPressed),
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ButtonStateUpdate::ButtonUp(_) => (&options.0.on_release, HostEvent::ButtonReleased)
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};
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// try to send to module and drop the sender if the receiver was droppped
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if let Some(sender) = options.to_owned().1 {
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if send_to_channel(&sender, event).await == false {
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trace!("Sender of button {index} dropped");
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options.1 = None
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}
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}
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// if config includes custom actions execute them
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if let Some(action) = action {
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execute_sh(&action).await
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}
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}
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}
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pub async fn execute_sh(command: &str) {
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match Command::new("sh").arg(command).output().await {
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Ok(o) => debug!("Command \'{}\' returned: {}", command, o.status),
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Err(e) => error!("Command \'{}\' failed: {}", command, e),
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}
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}
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/// try to send an event to the module channel.
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/// If the module dropped the listener this will return false.
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pub async fn send_to_channel(sender: &mpsc::Sender<HostEvent>, event: HostEvent) -> bool {
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if let Err(e) = sender.try_send(event) {
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match e {
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TrySendError::Full(_) => trace!("Buffer full: {:?}", e),
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TrySendError::Closed(_) => return false,
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}
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}
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true
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}
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