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fix(imap): fail fast on LIST errors

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async-imap returns infinite stream of errors
in case of EOF or timeout on the input stream,
so attempting to skip and log errors results in busy loop
similar to this:

   2023-12-22T13:07:35.751Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.751Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.751Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.751Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.752Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.752Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.752Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.752Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.753Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.754Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"
   2023-12-22T13:07:35.754Z core/event WARNING "" 2 "/__w/deltachat-core-rust/deltachat-core-rust/src/imap/scan_folders.rs:112: list_folders() can't get folder: io: timed out: timed out"

To avoid busy loop, fail fast on first error
and bubble it up instead of trying to recover.
This commit is contained in:
link2xt
2023-12-23 01:33:53 +00:00
parent 865ede39fe
commit dcf6ffef12
2 changed files with 7 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/imap.rs
View File

@@ -994,7 +994,7 @@ impl Imap {
self.prepare(context).await?;
let all_folders = self
.list_folders(context)
.list_folders()
.await
.context("listing folders for resync")?;
for folder in all_folders {

18
src/imap/scan_folders.rs
View File

@@ -1,7 +1,7 @@
use std::{collections::BTreeMap, time::Instant};
use anyhow::{Context as _, Result};
use futures::stream::StreamExt;
use futures::TryStreamExt;
use super::{get_folder_meaning_by_attrs, get_folder_meaning_by_name};
use crate::config::Config;
@@ -27,7 +27,7 @@ impl Imap {
info!(context, "Starting full folder scan");
self.prepare(context).await?;
let folders = self.list_folders(context).await?;
let folders = self.list_folders().await?;
let watched_folders = get_watched_folders(context).await?;
let mut folder_configs = BTreeMap::new();
@@ -98,21 +98,15 @@ impl Imap {
}
/// Returns the names of all folders on the IMAP server.
pub async fn list_folders(
self: &mut Imap,
context: &Context,
) -> Result<Vec<async_imap::types::Name>> {
pub async fn list_folders(self: &mut Imap) -> Result<Vec<async_imap::types::Name>> {
let session = self.session.as_mut();
let session = session.context("No IMAP connection")?;
let list = session
.list(Some(""), Some("*"))
.await?
.filter_map(|f| async {
f.context("list_folders() can't get folder")
.log_err(context)
.ok()
});
Ok(list.collect().await)
.try_collect()
.await?;
Ok(list)
}
}