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Make fetch asynchronous #210

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wojtek merged 3 commits from 187---make-fetch-asynchronous into main 2024-09-01 17:47:39 +02:00
Conversation 0 Commits 3 Files Changed 5 +121 -68
3 changed files with 121 additions and 68 deletions
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Showing only changes of commit c007813421 - Show all commits

85
src/tui/app/machine/browse.rs
View File

@ -1,11 +1,18 @@
use std::{sync::mpsc, thread, time};
use musichoard::collection::musicbrainz::IMusicBrainzRef;
use musichoard::collection::{
album::AlbumMeta,
artist::ArtistMeta,
musicbrainz::{IMusicBrainzRef, Mbid},
};
use crate::tui::app::{
use crate::tui::{
app::{
machine::{App, AppInner, AppMachine},
selection::{Delta, ListSelection},
AppMatchesInfo, AppPublic, AppState, IAppInteractBrowse,
},
lib::interface::musicbrainz::Error as MbError,
};
pub struct AppBrowse;
@ -91,48 +98,64 @@ impl IAppInteractBrowse for AppMachine<AppBrowse> {
}
};
let (matches_tx, matches_rx) = mpsc::channel::<AppMatchesInfo>();
let (matches_tx, matches_rx) = mpsc::channel::<FetchResult>();
match artist.meta.musicbrainz {
Some(ref mbid) => {
let arid = mbid.mbid();
Some(ref arid) => {
self.fetch_albums(
matches_tx,
arid.mbid().clone(),
artist.albums.iter().map(|a| &a.meta).cloned().collect(),
);
}
None => self.fetch_artist(matches_tx, artist.meta.clone()),
};
let mut album_iter = artist.albums.iter().peekable();
AppMachine::app_matches(self.inner, matches_rx)
}
fn no_op(self) -> Self::APP {
self.into()
}
}
pub type FetchError = MbError;
pub type FetchResult = Result<AppMatchesInfo, FetchError>;
pub type FetchSender = mpsc::Sender<FetchResult>;
pub type FetchReceiver = mpsc::Receiver<FetchResult>;
trait IAppInteractBrowsePrivate {
fn fetch_artist(&mut self, matches_tx: FetchSender, artist: ArtistMeta);
fn fetch_albums(&mut self, matches_tx: FetchSender, arid: Mbid, albums: Vec<AlbumMeta>);
}
impl IAppInteractBrowsePrivate for AppMachine<AppBrowse> {
fn fetch_artist(&mut self, matches_tx: FetchSender, artist: ArtistMeta) {
let musicbrainz = &mut self.inner.musicbrainz;
let result = musicbrainz
.search_artist(&artist)
.map(|list| AppMatchesInfo::artist(artist, list));
matches_tx.send(result).expect("receiver is disconnected");
}
fn fetch_albums(&mut self, matches_tx: FetchSender, arid: Mbid, albums: Vec<AlbumMeta>) {
let mut album_iter = albums.into_iter().peekable();
while let Some(album) = album_iter.next() {
if album.meta.musicbrainz.is_some() {
if album.musicbrainz.is_some() {
continue;
}
match self
.inner
.musicbrainz
.search_release_group(arid, &album.meta)
{
Ok(list) => matches_tx
.send(AppMatchesInfo::album(album.meta.clone(), list))
.expect("send fails only if receiver is disconnected"),
Err(err) => return AppMachine::error(self.inner, err.to_string()).into(),
}
let musicbrainz = &mut self.inner.musicbrainz;
let result = musicbrainz
.search_release_group(&arid, &album)
.map(|list| AppMatchesInfo::album(album, list));
matches_tx.send(result).expect("receiver is disconnected");
if album_iter.peek().is_some() {
thread::sleep(time::Duration::from_secs(1));
}
}
}
None => match self.inner.musicbrainz.search_artist(&artist.meta) {
Ok(list) => matches_tx
.send(AppMatchesInfo::artist(artist.meta.clone(), list))
.expect("send fails only if receiver is disconnected"),
Err(err) => return AppMachine::error(self.inner, err.to_string()).into(),
},
};
AppMachine::matches(self.inner, matches_rx).into()
}
fn no_op(self) -> Self::APP {
self.into()
}
}
#[cfg(test)]

84
src/tui/app/machine/matches.rs
View File

@ -1,4 +1,4 @@
use std::{cmp, sync::mpsc};
use std::cmp;
use crate::tui::app::{
machine::{App, AppInner, AppMachine},
@ -6,6 +6,8 @@ use crate::tui::app::{
IAppInteractMatches, MatchOption, WidgetState,
};
use super::browse::{FetchError, FetchReceiver};
impl AppArtistMatches {
fn len(&self) -> usize {
self.list.len()
@ -43,21 +45,32 @@ impl AppMatchesInfo {
}
pub struct AppMatches {
matches_rx: mpsc::Receiver<AppMatchesInfo>,
matches_rx: FetchReceiver,
current: Option<AppMatchesInfo>,
state: WidgetState,
}
impl AppMachine<AppMatches> {
pub fn matches(inner: AppInner, matches_rx: mpsc::Receiver<AppMatchesInfo>) -> Self {
let mut state = AppMatches {
impl AppMatches {
fn new(matches_rx: FetchReceiver) -> Self {
AppMatches {
matches_rx,
current: None,
state: WidgetState::default(),
};
state.next_matches_info();
}
}
}
impl AppMachine<AppMatches> {
fn matches(inner: AppInner, state: AppMatches) -> Self {
AppMachine { inner, state }
}
pub fn app_matches(inner: AppInner, matches_rx: FetchReceiver) -> App {
match AppMatches::new(matches_rx).next_matches_info() {
Ok(state) => AppMachine::matches(inner, state).into(),
Err(err) => AppMachine::error(inner, format!("fetch failed: {err}")).into(),
}
}
}
impl From<AppMachine<AppMatches>> for App {
@ -105,12 +118,17 @@ impl IAppInteractMatches for AppMachine<AppMatches> {
}
fn select(mut self) -> Self::APP {
self.state.next_matches_info();
match self.state.next_matches_info() {
Ok(state) => {
self.state = state;
match self.state.current {
Some(_) => self.into(),
None => AppMachine::browse(self.inner).into(),
}
}
Err(err) => AppMachine::error(self.inner, format!("fetch failed: {err}")).into(),
}
}
fn abort(self) -> Self::APP {
AppMachine::browse(self.inner).into()
@ -121,28 +139,34 @@ impl IAppInteractMatches for AppMachine<AppMatches> {
}
}
trait IAppInteractMatchesPrivate {
fn next_matches_info(&mut self);
trait IAppInteractMatchesPrivate
where
Self: Sized,
{
fn next_matches_info(self) -> Result<Self, FetchError>;
}
impl IAppInteractMatchesPrivate for AppMatches {
fn next_matches_info(&mut self) {
// FIXME: try_recv might not be appropriate for asynchronous version.
(self.current, self.state) = match self.matches_rx.try_recv() {
Ok(mut next_match) => {
fn next_matches_info(mut self) -> Result<Self, FetchError> {
(self.current, self.state) = match self.matches_rx.recv() {
Ok(fetch_result) => {
let mut next_match = fetch_result?;
next_match.push_cannot_have_mbid();
let mut state = WidgetState::default();
state.list.select(Some(0));
(Some(next_match), state)
}
Err(_) => (None, WidgetState::default()),
}
};
Ok(self)
}
}
#[cfg(test)]
mod tests {
use mpsc::Receiver;
use std::sync::mpsc;
use musichoard::collection::{
album::{AlbumDate, AlbumId, AlbumMeta, AlbumPrimaryType, AlbumSecondaryType},
artist::{ArtistId, ArtistMeta},
@ -227,10 +251,10 @@ mod tests {
vec![matches_info_1, matches_info_2]
}
fn receiver(matches_info_vec: Vec<AppMatchesInfo>) -> Receiver<AppMatchesInfo> {
fn receiver(matches_info_vec: Vec<AppMatchesInfo>) -> FetchReceiver {
let (tx, rx) = mpsc::channel();
for matches_info in matches_info_vec.into_iter() {
tx.send(matches_info).unwrap();
tx.send(Ok(matches_info)).unwrap();
}
rx
}
@ -243,7 +267,8 @@ mod tests {
#[test]
fn create_empty() {
let matches = AppMachine::matches(inner(music_hoard(vec![])), receiver(vec![]));
let matches =
AppMachine::app_matches(inner(music_hoard(vec![])), receiver(vec![])).unwrap_matches();
let widget_state = WidgetState::default();
@ -261,10 +286,11 @@ mod tests {
#[test]
fn create_nonempty() {
let mut matches_info_vec = album_matches_info_vec();
let matches = AppMachine::matches(
let matches = AppMachine::app_matches(
inner(music_hoard(vec![])),
receiver(matches_info_vec.clone()),
);
)
.unwrap_matches();
push_cannot_have_mbid(&mut matches_info_vec);
let mut widget_state = WidgetState::default();
@ -282,10 +308,11 @@ mod tests {
}
fn matches_flow(mut matches_info_vec: Vec<AppMatchesInfo>) {
let matches = AppMachine::matches(
let matches = AppMachine::app_matches(
inner(music_hoard(vec![])),
receiver(matches_info_vec.clone()),
);
)
.unwrap_matches();
push_cannot_have_mbid(&mut matches_info_vec);
let mut widget_state = WidgetState::default();
@ -337,10 +364,11 @@ mod tests {
#[test]
fn matches_abort() {
let mut matches_info_vec = album_matches_info_vec();
let matches = AppMachine::matches(
let matches = AppMachine::app_matches(
inner(music_hoard(vec![])),
receiver(matches_info_vec.clone()),
);
)
.unwrap_matches();
push_cannot_have_mbid(&mut matches_info_vec);
let mut widget_state = WidgetState::default();
@ -354,7 +382,8 @@ mod tests {
#[test]
fn matches_select_empty() {
let matches = AppMachine::matches(inner(music_hoard(vec![])), receiver(vec![]));
let matches =
AppMachine::app_matches(inner(music_hoard(vec![])), receiver(vec![])).unwrap_matches();
assert_eq!(matches.state.current, None);
@ -363,7 +392,8 @@ mod tests {
#[test]
fn no_op() {
let matches = AppMachine::matches(inner(music_hoard(vec![])), receiver(vec![]));
let matches =
AppMachine::app_matches(inner(music_hoard(vec![])), receiver(vec![])).unwrap_matches();
let app = matches.no_op();
app.unwrap_matches();
}

2
src/tui/app/machine/mod.rs
View File

@ -314,7 +314,7 @@ mod tests {
assert!(app.is_running());
let (_, rx) = mpsc::channel();
app = AppMachine::matches(app.unwrap_browse().inner, rx).into();
app = AppMachine::app_matches(app.unwrap_browse().inner, rx);
let state = app.state();
assert!(matches!(state, AppState::Matches(_)));