mirror of
https://github.com/chatmail/core.git
synced 2026-04-17 21:46:35 +03:00
imap: flatten fetch_idle()
This commit is contained in:
link2xt
207
src/scheduler.rs
207
src/scheduler.rs
@@ -166,112 +166,115 @@ async fn inbox_loop(ctx: Context, started: Sender<()>, inbox_handlers: ImapConne
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.await;
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}
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async fn fetch_idle(ctx: &Context, connection: &mut Imap, folder: Config) -> InterruptInfo {
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match ctx.get_config(folder).await {
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Ok(Some(watch_folder)) => {
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// connect and fake idle if unable to connect
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if let Err(err) = connection.prepare(ctx).await {
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warn!(ctx, "imap connection failed: {}", err);
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return connection.fake_idle(ctx, Some(watch_folder)).await;
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}
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if folder == Config::ConfiguredInboxFolder {
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if let Err(err) = connection
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.store_seen_flags_on_imap(ctx)
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.await
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.context("store_seen_flags_on_imap failed")
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{
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warn!(ctx, "{:#}", err);
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}
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}
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// Fetch the watched folder.
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if let Err(err) = connection
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.fetch_move_delete(ctx, &watch_folder, false)
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.await
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{
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connection.trigger_reconnect(ctx).await;
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warn!(ctx, "{:#}", err);
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return InterruptInfo::new(false);
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}
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// Mark expired messages for deletion. Marked messages will be deleted from the server
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// on the next iteration of `fetch_move_delete`. `delete_expired_imap_messages` is not
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// called right before `fetch_move_delete` because it is not well optimized and would
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// otherwise slow down message fetching.
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if let Err(err) = delete_expired_imap_messages(ctx)
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.await
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.context("delete_expired_imap_messages failed")
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{
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warn!(ctx, "{:#}", err);
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}
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// Scan additional folders only after finishing fetching the watched folder.
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//
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// On iOS the application has strictly limited time to work in background, so we may not
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// be able to scan all folders before time is up if there are many of them.
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if folder == Config::ConfiguredInboxFolder {
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// Only scan on the Inbox thread in order to prevent parallel scans, which might lead to duplicate messages
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match connection.scan_folders(ctx).await {
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Err(err) => {
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// Don't reconnect, if there is a problem with the connection we will realize this when IDLEing
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// but maybe just one folder can't be selected or something
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warn!(ctx, "{}", err);
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}
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Ok(true) => {
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// Fetch the watched folder again in case scanning other folder moved messages
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// there.
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//
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// In most cases this will select the watched folder and return because there are
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// no new messages. We want to select the watched folder anyway before going IDLE
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// there, so this does not take additional protocol round-trip.
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if let Err(err) = connection
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.fetch_move_delete(ctx, &watch_folder, false)
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.await
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{
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connection.trigger_reconnect(ctx).await;
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warn!(ctx, "{:#}", err);
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return InterruptInfo::new(false);
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}
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}
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Ok(false) => {}
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}
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}
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// Synchronize Seen flags.
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connection
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.sync_seen_flags(ctx, &watch_folder)
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.await
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.context("sync_seen_flags")
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.ok_or_log(ctx);
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connection.connectivity.set_connected(ctx).await;
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// idle
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if connection.can_idle() {
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match connection.idle(ctx, Some(watch_folder)).await {
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Ok(v) => v,
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Err(err) => {
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connection.trigger_reconnect(ctx).await;
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warn!(ctx, "{}", err);
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InterruptInfo::new(false)
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}
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}
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} else {
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connection.fake_idle(ctx, Some(watch_folder)).await
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}
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}
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Ok(None) => {
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connection.connectivity.set_not_configured(ctx).await;
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info!(ctx, "Can not watch {} folder, not set", folder);
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connection.fake_idle(ctx, None).await
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}
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async fn fetch_idle(ctx: &Context, connection: &mut Imap, folder_config: Config) -> InterruptInfo {
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let folder = match ctx.get_config(folder_config).await {
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Ok(folder) => folder,
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Err(err) => {
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warn!(
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ctx,
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"Can not watch {} folder, failed to retrieve config: {:?}", folder, err
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"Can not watch {} folder, failed to retrieve config: {:#}", folder_config, err
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);
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connection.fake_idle(ctx, None).await
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return connection.fake_idle(ctx, None).await;
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}
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};
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let watch_folder = if let Some(watch_folder) = folder {
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watch_folder
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} else {
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connection.connectivity.set_not_configured(ctx).await;
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info!(ctx, "Can not watch {} folder, not set", folder_config);
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return connection.fake_idle(ctx, None).await;
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};
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// connect and fake idle if unable to connect
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if let Err(err) = connection.prepare(ctx).await {
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warn!(ctx, "imap connection failed: {}", err);
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return connection.fake_idle(ctx, Some(watch_folder)).await;
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}
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if folder_config == Config::ConfiguredInboxFolder {
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if let Err(err) = connection
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.store_seen_flags_on_imap(ctx)
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.await
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.context("store_seen_flags_on_imap failed")
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{
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warn!(ctx, "{:#}", err);
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}
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}
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// Fetch the watched folder.
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if let Err(err) = connection
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.fetch_move_delete(ctx, &watch_folder, false)
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.await
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{
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connection.trigger_reconnect(ctx).await;
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warn!(ctx, "{:#}", err);
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return InterruptInfo::new(false);
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}
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// Mark expired messages for deletion. Marked messages will be deleted from the server
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// on the next iteration of `fetch_move_delete`. `delete_expired_imap_messages` is not
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// called right before `fetch_move_delete` because it is not well optimized and would
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// otherwise slow down message fetching.
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if let Err(err) = delete_expired_imap_messages(ctx)
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.await
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.context("delete_expired_imap_messages failed")
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{
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warn!(ctx, "{:#}", err);
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}
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// Scan additional folders only after finishing fetching the watched folder.
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//
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// On iOS the application has strictly limited time to work in background, so we may not
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// be able to scan all folders before time is up if there are many of them.
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if folder_config == Config::ConfiguredInboxFolder {
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// Only scan on the Inbox thread in order to prevent parallel scans, which might lead to duplicate messages
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match connection.scan_folders(ctx).await {
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Err(err) => {
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// Don't reconnect, if there is a problem with the connection we will realize this when IDLEing
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// but maybe just one folder can't be selected or something
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warn!(ctx, "{}", err);
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}
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Ok(true) => {
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// Fetch the watched folder again in case scanning other folder moved messages
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// there.
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//
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// In most cases this will select the watched folder and return because there are
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// no new messages. We want to select the watched folder anyway before going IDLE
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// there, so this does not take additional protocol round-trip.
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if let Err(err) = connection
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.fetch_move_delete(ctx, &watch_folder, false)
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.await
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{
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connection.trigger_reconnect(ctx).await;
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warn!(ctx, "{:#}", err);
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return InterruptInfo::new(false);
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}
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}
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Ok(false) => {}
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}
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}
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// Synchronize Seen flags.
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connection
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.sync_seen_flags(ctx, &watch_folder)
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.await
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.context("sync_seen_flags")
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.ok_or_log(ctx);
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connection.connectivity.set_connected(ctx).await;
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// idle
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if !connection.can_idle() {
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return connection.fake_idle(ctx, Some(watch_folder)).await;
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}
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match connection.idle(ctx, Some(watch_folder)).await {
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Ok(v) => v,
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Err(err) => {
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connection.trigger_reconnect(ctx).await;
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warn!(ctx, "{}", err);
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InterruptInfo::new(false)
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}
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}
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}
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