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review comments - balance enquiry debouncer
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139 changes: 139 additions & 0 deletions
139
applications/tari_console_wallet/src/ui/state/debouncer.rs
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| // Copyright 2020. The Tari Project | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without modification, are permitted provided that the | ||
| // following conditions are met: | ||
| // | ||
| // 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following | ||
| // disclaimer. | ||
| // | ||
| // 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the | ||
| // following disclaimer in the documentation and/or other materials provided with the distribution. | ||
| // | ||
| // 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote | ||
| // products derived from this software without specific prior written permission. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, | ||
| // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
| // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | ||
| // USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
|
|
||
| use crate::ui::state::AppStateInner; | ||
| use log::*; | ||
| use std::{ | ||
| sync::Arc, | ||
| time::{Duration, Instant}, | ||
| }; | ||
| use tari_wallet::output_manager_service::handle::OutputManagerHandle; | ||
| use tokio::{ | ||
| sync::{broadcast, RwLock}, | ||
| time, | ||
| }; | ||
|
|
||
| const LOG_TARGET: &str = "wallet::console_wallet::debouncer"; | ||
|
|
||
| #[derive(Clone)] | ||
| pub(crate) struct BalanceEnquiryDebouncer { | ||
| app_state_inner: Arc<RwLock<AppStateInner>>, | ||
| output_manager_service: OutputManagerHandle, | ||
| balance_enquiry_cooldown_period: Duration, | ||
| tx: broadcast::Sender<()>, | ||
| } | ||
|
|
||
| impl BalanceEnquiryDebouncer { | ||
| pub fn new( | ||
| app_state_inner: Arc<RwLock<AppStateInner>>, | ||
| balance_enquiry_cooldown_period: Duration, | ||
| output_manager_service: OutputManagerHandle, | ||
| ) -> Self { | ||
| // This channel must only be size 1; the debouncer will ensure that the balance is updated timeously | ||
| let (tx, _) = broadcast::channel(1); | ||
| Self { | ||
| app_state_inner, | ||
| output_manager_service, | ||
| balance_enquiry_cooldown_period, | ||
| tx, | ||
| } | ||
| } | ||
|
|
||
| pub async fn run(mut self) { | ||
| let balance_enquiry_events = &mut self.tx.subscribe(); | ||
| let mut shutdown_signal = self.app_state_inner.read().await.get_shutdown_signal(); | ||
| let delay = time::sleep(self.balance_enquiry_cooldown_period); | ||
| tokio::pin!(delay); | ||
|
|
||
| debug!(target: LOG_TARGET, "Balance enquiry debouncer starting"); | ||
| if let Ok(balance) = self.output_manager_service.get_balance().await { | ||
| trace!( | ||
| target: LOG_TARGET, | ||
| "Initial balance: available {}, incoming {}, outgoing {}", | ||
| balance.available_balance, | ||
| balance.pending_incoming_balance, | ||
| balance.pending_outgoing_balance | ||
| ); | ||
| let mut inner = self.app_state_inner.write().await; | ||
| if let Err(e) = inner.refresh_balance(balance).await { | ||
| warn!(target: LOG_TARGET, "Error refresh app_state: {}", e); | ||
| } | ||
| } | ||
| loop { | ||
| tokio::select! { | ||
| _ = &mut delay => { | ||
| if let Ok(result) = time::timeout( | ||
| self.balance_enquiry_cooldown_period, | ||
| balance_enquiry_events.recv() | ||
| ).await { | ||
| match result { | ||
| Ok(_) => { | ||
| let start_time = Instant::now(); | ||
| match self.output_manager_service.get_balance().await { | ||
| Ok(balance) => { | ||
| trace!( | ||
| target: LOG_TARGET, | ||
| "Updating balance ({} ms): available {}, incoming {}, outgoing {}", | ||
| start_time.elapsed().as_millis(), | ||
| balance.available_balance, | ||
| balance.pending_incoming_balance, | ||
| balance.pending_outgoing_balance | ||
| ); | ||
| let mut inner = self.app_state_inner.write().await; | ||
| if let Err(e) = inner.refresh_balance(balance).await { | ||
| warn!(target: LOG_TARGET, "Error refresh app_state: {}", e); | ||
| } | ||
| } | ||
| Err(e) => { | ||
| warn!(target: LOG_TARGET, "Could not obtain balance ({})", e); | ||
| } | ||
| } | ||
| } | ||
| Err(broadcast::error::RecvError::Lagged(n)) => { | ||
| trace!(target: LOG_TARGET, "Balance enquiry debouncer lagged {} update requests", n); | ||
| continue; | ||
| } | ||
| Err(broadcast::error::RecvError::Closed) => { | ||
| info!( | ||
| target: LOG_TARGET, | ||
| "Balance enquiry debouncer shutting down because the channel was closed" | ||
| ); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| }, | ||
| _ = shutdown_signal.wait() => { | ||
| info!( | ||
| target: LOG_TARGET, | ||
| "Balance enquiry debouncer shutting down because the shutdown signal was received" | ||
| ); | ||
| break; | ||
| }, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| pub fn get_sender(self) -> broadcast::Sender<()> { | ||
| self.tx | ||
| } | ||
| } |
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