feat(crawler): reconcile pass to enqueue mangas missing from the DB (0.85.0)

The interleaved metadata pass misses mangas to list drift (a title slips a
pagination slot during the slow detail walk). Add a reconcile pass: a cheap,
full, list-only walk (refs only, no detail visit, no early stop) that
set-diffs the walked keys against manga_sources and enqueues the strictly-
missing ones as SyncManga jobs. A set-diff is immune to drift — a manga only
has to appear somewhere in the list.

- Build the previously-dead SyncManga worker by extending RealChapterDispatcher
  to run the shared pipeline::process_manga_ref (fetch → upsert → cover →
  chapters), refactored out of run_metadata_pass so both paths stay in lockstep.
  The crawl worker now leases both sync_chapter_content and sync_manga
  (jobs::lease_kinds); both serialize on the single exclusive browser.
- SyncManga payload carries url + title so the worker can rebuild the ref and
  the dead-jobs/history UI can label a missing manga that has no manga row yet.
- "Missing" = strict NOT EXISTS (dropped rows count as present). Re-enqueue is
  skipped when a pending/running/dead SyncManga job already exists, so a gone
  manga (detail 404 → retries → dead) is left dead and not retried.
- New POST /v1/admin/crawler/reconcile (fire-and-forget, shares
  manual_pass_lock) + "Reconcile missing" admin button + Reconciling status
  phase streamed over SSE.
- dead-jobs/history queries surface payload title/url/key; tables fall back to
  them for sync_manga rows; both searches match the payload title.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-06-16 21:50:54 +02:00
parent 35664bccc7
commit dd300a150c
26 changed files with 1387 additions and 218 deletions

View File

@@ -46,7 +46,7 @@ use tokio::task::JoinSet;
use tokio_util::sync::CancellationToken;
use crate::crawler::content::SyncOutcome;
use crate::crawler::jobs::{self, JobPayload, Lease, KIND_SYNC_CHAPTER_CONTENT};
use crate::crawler::jobs::{self, JobPayload, Lease, KIND_SYNC_CHAPTER_CONTENT, KIND_SYNC_MANGA};
use crate::crawler::pipeline;
use crate::crawler::status::{Phase, StatusHandle};
@@ -76,6 +76,15 @@ pub trait ChapterDispatcher: Send + Sync {
async fn dispatch(&self, payload: JobPayload) -> anyhow::Result<SyncOutcome>;
}
/// A full list-only walk that enqueues mangas missing from the DB as
/// `SyncManga` jobs. Triggered on demand from the admin `/reconcile`
/// endpoint (not on the cron). Mirrors [`MetadataPass`] so the endpoint can
/// hold a `dyn` and tests can stub it.
#[async_trait]
pub trait ReconcilePass: Send + Sync {
async fn run(&self) -> anyhow::Result<crate::crawler::reconcile::ReconcileStats>;
}
/// Configuration for [`spawn`]. Use `None` for `metadata_pass` to disable
/// the cron entirely (worker-pool-only mode — useful when only the
/// bookmark-triggered enqueue path is wanted).
@@ -342,9 +351,9 @@ impl WorkerContext {
_ = self.cancel.cancelled() => return,
}
}
let leases = match jobs::lease(
let leases = match jobs::lease_kinds(
&self.pool,
Some(KIND_SYNC_CHAPTER_CONTENT),
&[KIND_SYNC_CHAPTER_CONTENT, KIND_SYNC_MANGA],
1,
LEASE_DURATION,
)

View File

@@ -15,11 +15,18 @@ use uuid::Uuid;
#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(tag = "kind", rename_all = "snake_case")]
pub enum JobPayload {
/// Fetch one manga's detail page, upsert metadata, enqueue
/// `SyncChapterList`.
/// Fetch one manga's detail page, upsert metadata, sync its chapter
/// list. `url` and `title` are carried from the list ref so the worker
/// can reconstruct a `SourceMangaRef` without re-walking, and so the
/// dead-jobs/history UI can render a label even before any manga row
/// exists. `#[serde(default)]` keeps older/hand-inserted rows decodable.
SyncManga {
source_id: String,
source_manga_key: String,
#[serde(default)]
url: String,
#[serde(default)]
title: String,
},
/// Diff the chapter list, enqueue `SyncChapterContent` for new
/// chapters, soft-drop vanished ones.
@@ -61,6 +68,11 @@ pub enum JobState {
/// without re-spelling the literal.
pub const KIND_SYNC_CHAPTER_CONTENT: &str = "sync_chapter_content";
/// Kind discriminator for manga-detail sync jobs (used by the reconcile
/// pass to enqueue missing mangas). The crawl worker leases this alongside
/// `KIND_SYNC_CHAPTER_CONTENT`; both serialize on the single browser.
pub const KIND_SYNC_MANGA: &str = "sync_manga";
/// Kind discriminator for AI page-analysis jobs. The analysis daemon
/// leases with this filter so it never contends with crawl jobs.
pub const KIND_ANALYZE_PAGE: &str = "analyze_page";
@@ -174,6 +186,51 @@ pub async fn lease(
.fetch_all(pool)
.await?;
decode_leases(rows)
}
/// Like [`lease`] but matches any of several `payload->>'kind'` values. The
/// crawl worker uses this to drain both `sync_chapter_content` and
/// `sync_manga` from one loop (both serialize on the single browser); the
/// analysis daemon keeps using single-kind [`lease`] so it never contends.
pub async fn lease_kinds(
pool: &PgPool,
kinds: &[&str],
max: i64,
lease_duration: Duration,
) -> sqlx::Result<Vec<Lease>> {
let lease_ms: i64 = lease_duration.as_millis().min(i64::MAX as u128) as i64;
let kinds_vec: Vec<String> = kinds.iter().map(|s| s.to_string()).collect();
let rows: Vec<(Uuid, serde_json::Value, i32, i32)> = sqlx::query_as(
r#"
WITH leased AS (
SELECT id FROM crawler_jobs
WHERE (state = 'pending' OR (state = 'running' AND leased_until < now()))
AND scheduled_at <= now()
AND payload->>'kind' = ANY($1)
ORDER BY scheduled_at, created_at
LIMIT $2
FOR UPDATE SKIP LOCKED
)
UPDATE crawler_jobs j
SET state = 'running',
attempts = j.attempts + 1,
leased_until = now() + ($3::bigint || ' milliseconds')::interval,
updated_at = now()
FROM leased l
WHERE j.id = l.id
RETURNING j.id, j.payload, j.attempts, j.max_attempts
"#,
)
.bind(&kinds_vec)
.bind(max)
.bind(lease_ms)
.fetch_all(pool)
.await?;
decode_leases(rows)
}
fn decode_leases(rows: Vec<(Uuid, serde_json::Value, i32, i32)>) -> sqlx::Result<Vec<Lease>> {
let mut leases = Vec::with_capacity(rows.len());
for (id, payload_json, attempts, max_attempts) in rows {
let payload: JobPayload = serde_json::from_value(payload_json).map_err(|e| {
@@ -393,6 +450,60 @@ mod tests {
}
}
#[test]
fn sync_manga_payload_round_trips_with_url_and_title() {
let payload = JobPayload::SyncManga {
source_id: "target".into(),
source_manga_key: "foo".into(),
url: "https://target.example/manga/foo".into(),
title: "Foo Title".into(),
};
let json = serde_json::to_value(&payload).unwrap();
assert_eq!(json["kind"], KIND_SYNC_MANGA);
assert_eq!(json["source_id"], "target");
assert_eq!(json["source_manga_key"], "foo");
assert_eq!(json["url"], "https://target.example/manga/foo");
assert_eq!(json["title"], "Foo Title");
match serde_json::from_value::<JobPayload>(json).unwrap() {
JobPayload::SyncManga {
source_id,
source_manga_key,
url,
title,
} => {
assert_eq!(source_id, "target");
assert_eq!(source_manga_key, "foo");
assert_eq!(url, "https://target.example/manga/foo");
assert_eq!(title, "Foo Title");
}
other => panic!("expected SyncManga, got {other:?}"),
}
}
#[test]
fn sync_manga_payload_defaults_missing_url_and_title() {
// A row that predates the url/title fields must still decode.
let legacy = serde_json::json!({
"kind": "sync_manga",
"source_id": "target",
"source_manga_key": "foo",
});
match serde_json::from_value::<JobPayload>(legacy).unwrap() {
JobPayload::SyncManga {
url,
title,
source_manga_key,
..
} => {
assert_eq!(source_manga_key, "foo");
assert_eq!(url, "");
assert_eq!(title, "");
}
other => panic!("expected SyncManga, got {other:?}"),
}
}
#[test]
fn backoff_base_grows_exponentially_and_caps_at_one_hour() {
// attempts == 1 → 60s, doubling each step.

View File

@@ -23,6 +23,7 @@ pub mod jobs;
pub mod nav;
pub mod pipeline;
pub mod rate_limit;
pub mod reconcile;
pub mod resync;
pub mod safety;
pub mod session;

View File

@@ -76,6 +76,213 @@ pub(crate) fn should_abort_pass(consecutive: u32, threshold: u32) -> bool {
threshold > 0 && consecutive >= threshold
}
/// Success outcome of [`process_manga_ref`].
pub(crate) struct RefProcessed {
pub manga_id: Uuid,
pub status: UpsertStatus,
pub chapters_new: Option<usize>,
pub cover_fetched: bool,
}
/// Why [`process_manga_ref`] produced no upsert.
pub(crate) enum RefError {
/// `fetch_manga` itself failed. Counts toward the consecutive-failure
/// breaker in the metadata pass; the `SyncManga` worker treats it as a
/// retryable job failure.
Fetch(anyhow::Error),
/// The detail fetched but the ref was skipped — partial-render guard or
/// an upsert error. The fetch *succeeded*, so the breaker resets, but no
/// manga was upserted.
Skip(anyhow::Error),
}
/// Run fetch → partial-render guard → upsert → cover → chapter-sync for a
/// single discovered ref. Extracted from [`run_metadata_pass`] so the
/// `SyncManga` worker drives the identical per-manga work and the two paths
/// can't drift. Records the detail/cover crawl metrics internally; the
/// caller owns the discovered/seen/stop/breaker bookkeeping.
#[allow(clippy::too_many_arguments)]
pub(crate) async fn process_manga_ref(
ctx: &FetchContext<'_>,
source: &TargetSource,
db: &PgPool,
storage: &dyn Storage,
http: &reqwest::Client,
rate: &HostRateLimiters,
r: &SourceMangaRef,
skip_chapters: bool,
allowlist: &DownloadAllowlist,
max_image_bytes: usize,
status: Option<&crate::crawler::status::StatusHandle>,
) -> Result<RefProcessed, RefError> {
let source_id = source.id();
let detail_started = std::time::Instant::now();
let manga = match source.fetch_manga(ctx, r).await {
Ok(m) => m,
Err(e) => {
// Detail-fetch timing (failed). manga_id is unknown — the manga
// was never upserted.
let _ = repo::crawl_metrics::record(
db,
repo::crawl_metrics::OP_MANGA_DETAIL,
None,
None,
"failed",
detail_started.elapsed().as_millis() as i64,
None,
Some(&format!("{e:#}")),
)
.await;
return Err(RefError::Fetch(e));
}
};
// Detail fetch succeeded; stash its duration to record once the
// manga_id is known (after upsert).
let detail_ms = detail_started.elapsed().as_millis() as i64;
// Partial-render guard: an empty chapter list paired with a prior count
// > 0 is overwhelmingly a chromium snapshot taken between the wrapper
// render and its rows render. Treat as a transient skip (no upsert) so
// a later attempt retries. Skipped in `skip_chapters` mode because the
// parser returns an empty Vec there by design.
if !skip_chapters && manga.chapters.is_empty() {
match repo::crawler::live_chapter_count_for_source_manga(db, source_id, &r.source_manga_key)
.await
{
Ok(prior) if prior > 0 => {
return Err(RefError::Skip(anyhow::anyhow!(
"fetch_manga returned empty chapters but prior count {prior} > 0; \
treating as partial-render transient"
)));
}
Ok(_) => {}
Err(e) => {
// DB lookup failed — fail safe: skip rather than risk a
// soft-drop on a manga whose prior count we couldn't confirm.
return Err(RefError::Skip(
anyhow::Error::new(e).context("live_chapter_count_for_source_manga"),
));
}
}
}
let upsert = match repo::crawler::upsert_manga_from_source(db, source_id, &r.url, &manga).await {
Ok(u) => u,
Err(e) => {
return Err(RefError::Skip(
anyhow::Error::new(e).context("upsert_manga_from_source"),
));
}
};
// Detail-fetch timing (ok), now that we have the manga_id.
let _ = repo::crawl_metrics::record(
db,
repo::crawl_metrics::OP_MANGA_DETAIL,
Some(upsert.manga_id),
None,
"ok",
detail_ms,
None,
None,
)
.await;
tracing::info!(
key = %manga.source_manga_key,
manga_id = %upsert.manga_id,
status = ?upsert.status,
title = %manga.title,
"manga upserted"
);
// Cover image: download when missing in storage or when metadata
// signaled an update (cover URL is part of metadata_hash, so Updated
// implies the URL may have moved). Failures are non-fatal.
let mut cover_fetched = false;
let needs_cover =
upsert.cover_image_path.is_none() || matches!(upsert.status, UpsertStatus::Updated);
if needs_cover {
if let Some(cover_url) = manga.cover_url.as_deref() {
// RAII: the guard clears `current_cover` on every exit path.
let _cover_guard = status.map(|s| {
s.begin_cover(crate::crawler::status::CoverTarget {
manga_id: upsert.manga_id,
manga_title: manga.title.clone(),
})
});
let cover_started = std::time::Instant::now();
let cover_result = download_and_store_cover(
db,
storage,
http,
rate,
&r.url,
upsert.manga_id,
cover_url,
allowlist,
max_image_bytes,
)
.await;
let cover_ms = cover_started.elapsed().as_millis() as i64;
let _ = repo::crawl_metrics::record(
db,
repo::crawl_metrics::OP_MANGA_COVER,
Some(upsert.manga_id),
None,
if cover_result.is_ok() { "ok" } else { "failed" },
cover_ms,
None,
cover_result.as_ref().err().map(|e| format!("{e:#}")).as_deref(),
)
.await;
match cover_result {
Ok(()) => cover_fetched = true,
Err(e) => tracing::warn!(
manga_id = %upsert.manga_id,
error = ?e,
"cover download failed"
),
}
}
}
// Chapter sync. `None` (skip_chapters mode, or a logged-and-swallowed
// sync error) refuses to stop on this manga because we can't confirm
// "no new chapters."
let chapters_new: Option<usize> = if skip_chapters {
None
} else {
match repo::crawler::sync_manga_chapters(db, source_id, upsert.manga_id, &manga.chapters)
.await
{
Ok(diff) => {
tracing::info!(
manga_id = %upsert.manga_id,
new = diff.new,
refreshed = diff.refreshed,
dropped = diff.dropped,
"chapters synced"
);
Some(diff.new)
}
Err(e) => {
tracing::warn!(
manga_id = %upsert.manga_id,
error = ?e,
"chapter sync failed"
);
None
}
}
};
Ok(RefProcessed {
manga_id: upsert.manga_id,
status: upsert.status,
chapters_new,
cover_fetched,
})
}
/// Runs the discover → fetch → upsert → cover → chapter-list-diff pipeline
/// for the target source. Pure metadata; chapter content is enqueued as
/// separate `SyncChapterContent` jobs by the caller after this returns.
@@ -244,32 +451,48 @@ pub async fn run_metadata_pass(
key = %r.source_manga_key,
"fetching metadata"
);
let detail_started = std::time::Instant::now();
let manga = match source.fetch_manga(&ctx, &r).await {
Ok(m) => {
match process_manga_ref(
&ctx,
&source,
db,
storage,
http,
rate,
&r,
skip_chapters,
allowlist,
max_image_bytes,
status,
)
.await
{
Ok(p) => {
consecutive_failures = 0;
m
stats.upserted += 1;
if p.cover_fetched {
stats.covers_fetched += 1;
}
// Record success in the dedup set. Cover and chapter-sync
// failures inside process_manga_ref are non-fatal and
// don't roll this back — metadata is the durable source
// of truth for the dedup.
seen.insert(r.source_manga_key.clone());
if should_stop(was_clean, p.status, p.chapters_new) {
hit_stop_condition = true;
tracing::info!(
key = %r.source_manga_key,
"stop condition met (Unchanged metadata + 0 new chapters); halting walk"
);
break 'outer;
}
}
Err(e) => {
Err(RefError::Fetch(e)) => {
tracing::warn!(
key = %r.source_manga_key,
url = %r.url,
error = ?e,
"fetch_manga failed"
);
// Detail-fetch timing (failed). manga_id is unknown — the
// manga was never upserted.
let _ = repo::crawl_metrics::record(
db,
repo::crawl_metrics::OP_MANGA_DETAIL,
None,
None,
"failed",
detail_started.elapsed().as_millis() as i64,
None,
Some(&format!("{e:#}")),
)
.await;
stats.mangas_failed += 1;
consecutive_failures += 1;
if should_abort_pass(consecutive_failures, max_consecutive_failures) {
@@ -282,191 +505,19 @@ pub async fn run_metadata_pass(
);
break 'outer;
}
continue;
}
};
// Detail fetch succeeded; stash its duration to record once the
// manga_id is known (after upsert).
let detail_ms = detail_started.elapsed().as_millis() as i64;
// Partial-render guard: an empty chapter list paired with a
// prior count > 0 is overwhelmingly a chromium snapshot
// taken between the #chapter_table wrapper render and its
// rows render. The wait_for_selector wait in `navigate`
// narrows this window but cannot close it for slow renders
// beyond the selector budget. Treat as a transient failure
// here — skip upsert, skip seen.insert — so the next batch
// (or the next tick) retries. Skipped in `skip_chapters`
// mode because the parser is configured to return an empty
// Vec by design there.
if !skip_chapters && manga.chapters.is_empty() {
match repo::crawler::live_chapter_count_for_source_manga(
db, source_id, &r.source_manga_key,
)
.await
{
Ok(prior) if prior > 0 => {
tracing::warn!(
key = %r.source_manga_key,
url = %r.url,
prior_chapter_count = prior,
"fetch_manga returned empty chapters but prior count > 0; treating as partial-render transient and skipping"
);
stats.mangas_failed += 1;
continue;
}
Ok(_) => {}
Err(e) => {
// DB lookup failed — fail safe: skip rather
// than risk a soft-drop on a manga whose prior
// count we couldn't confirm.
tracing::warn!(
key = %r.source_manga_key,
error = ?e,
"live_chapter_count_for_source_manga failed; skipping cautiously"
);
stats.mangas_failed += 1;
continue;
}
}
}
let upsert = match repo::crawler::upsert_manga_from_source(
db, source_id, &r.url, &manga,
)
.await
{
Ok(u) => u,
Err(e) => {
tracing::error!(
Err(RefError::Skip(e)) => {
// Fetch succeeded (so the breaker resets) but the ref was
// skipped — partial render or upsert error. Left out of
// `seen` so a reappearance in a later batch retries.
tracing::warn!(
key = %r.source_manga_key,
error = ?e,
"upsert_manga_from_source failed"
"manga ref skipped (partial-render or upsert error)"
);
consecutive_failures = 0;
stats.mangas_failed += 1;
continue;
}
};
stats.upserted += 1;
// Detail-fetch timing (ok), now that we have the manga_id.
let _ = repo::crawl_metrics::record(
db,
repo::crawl_metrics::OP_MANGA_DETAIL,
Some(upsert.manga_id),
None,
"ok",
detail_ms,
None,
None,
)
.await;
// Record success in the dedup set. Cover and chapter-sync
// failures below are non-fatal and don't roll this back —
// metadata is the durable source of truth for the dedup.
seen.insert(r.source_manga_key.clone());
tracing::info!(
key = %manga.source_manga_key,
manga_id = %upsert.manga_id,
status = ?upsert.status,
title = %manga.title,
"manga upserted"
);
// Cover image: download when missing in storage or when metadata
// signaled an update (cover URL is part of metadata_hash, so
// Updated implies the URL may have moved). Failures are non-fatal.
let needs_cover = upsert.cover_image_path.is_none()
|| matches!(upsert.status, repo::crawler::UpsertStatus::Updated);
if needs_cover {
if let Some(cover_url) = manga.cover_url.as_deref() {
// RAII: the guard clears `current_cover` on every
// exit path (success, panic, future early-return).
// Mirrors the chapter-side ChapterGuard.
let _cover_guard = status.map(|s| {
s.begin_cover(crate::crawler::status::CoverTarget {
manga_id: upsert.manga_id,
manga_title: manga.title.clone(),
})
});
let cover_started = std::time::Instant::now();
let cover_result = download_and_store_cover(
db,
storage,
http,
rate,
&r.url,
upsert.manga_id,
cover_url,
allowlist,
max_image_bytes,
)
.await;
let cover_ms = cover_started.elapsed().as_millis() as i64;
let _ = repo::crawl_metrics::record(
db,
repo::crawl_metrics::OP_MANGA_COVER,
Some(upsert.manga_id),
None,
if cover_result.is_ok() { "ok" } else { "failed" },
cover_ms,
None,
cover_result.as_ref().err().map(|e| format!("{e:#}")).as_deref(),
)
.await;
match cover_result {
Ok(()) => stats.covers_fetched += 1,
Err(e) => tracing::warn!(
manga_id = %upsert.manga_id,
error = ?e,
"cover download failed"
),
}
}
}
// Chapter sync. `chapters_new` feeds the stop check below:
// `None` (skip_chapters mode, or a logged-and-swallowed sync
// error) refuses to stop on this manga because we can't
// confirm "no new chapters."
let chapters_new: Option<usize> = if skip_chapters {
None
} else {
match repo::crawler::sync_manga_chapters(
db,
source_id,
upsert.manga_id,
&manga.chapters,
)
.await
{
Ok(diff) => {
tracing::info!(
manga_id = %upsert.manga_id,
new = diff.new,
refreshed = diff.refreshed,
dropped = diff.dropped,
"chapters synced"
);
Some(diff.new)
}
Err(e) => {
tracing::warn!(
manga_id = %upsert.manga_id,
error = ?e,
"chapter sync failed"
);
None
}
}
};
if should_stop(was_clean, upsert.status, chapters_new) {
hit_stop_condition = true;
tracing::info!(
key = %manga.source_manga_key,
"stop condition met (Unchanged metadata + 0 new chapters); halting walk"
);
break 'outer;
}
}
}

View File

@@ -0,0 +1,260 @@
//! Reconcile pass — find mangas the metadata pass missed.
//!
//! The interleaved metadata pass ([`crate::crawler::pipeline`]) walks the
//! source list newest-first and visits each manga inline, which makes it
//! vulnerable to list drift: a manga can slip a pagination slot while the
//! walk spends minutes on detail work, and never get upserted.
//!
//! Reconcile fixes that with a cheap, full, unconditional list-only walk
//! (refs only — no `fetch_manga`, no early stop), set-diffs the walked keys
//! against `manga_sources`, and enqueues the strictly-missing ones as
//! `SyncManga` jobs for the crawl worker to visit. A set-diff is immune to
//! drift: a manga only has to appear *somewhere* in the list, not survive a
//! specific slot during a slow walk.
//!
//! Identity matches the DB exactly because both sides derive the key the
//! same way: the walker's refs carry `source_manga_key =
//! derive_key_from_url(list_href)`, which is precisely what
//! `manga_sources.source_manga_key` stores.
use std::collections::HashSet;
use anyhow::Context;
use sqlx::PgPool;
use crate::crawler::browser_manager::BrowserManager;
use crate::crawler::jobs::{self, EnqueueResult, JobPayload};
use crate::crawler::rate_limit::HostRateLimiters;
use crate::crawler::source::target::TargetSource;
use crate::crawler::source::{FetchContext, Source, SourceMangaRef};
use crate::crawler::status::Phase;
use crate::repo;
use crate::repo::crawler::ensure_source;
/// Counters surfaced when a reconcile pass finishes.
#[derive(Debug, Default, Clone, Copy)]
pub struct ReconcileStats {
/// Distinct refs collected from the full list walk.
pub walked: usize,
/// Walked keys with no `manga_sources` row (strict `NOT EXISTS`).
pub missing: usize,
/// Missing mangas newly enqueued as `SyncManga` jobs this pass.
pub enqueued: usize,
/// Missing mangas skipped because a blocking (pending/running/dead)
/// `SyncManga` job already exists, or the enqueue lost an insert race.
pub skipped: usize,
}
/// Pure set-diff: which walked refs should be enqueued. A ref is selected
/// when its key is neither already in the DB (`existing`) nor already has a
/// blocking job (`blocked`). Repeated keys in `walked` (source index drift
/// can surface the same manga twice) are de-duplicated — the first ref wins.
pub(crate) fn select_missing<'a>(
walked: &'a [SourceMangaRef],
existing: &HashSet<String>,
blocked: &HashSet<String>,
) -> Vec<&'a SourceMangaRef> {
let mut seen = HashSet::new();
let mut out = Vec::new();
for r in walked {
if existing.contains(&r.source_manga_key) || blocked.contains(&r.source_manga_key) {
continue;
}
if seen.insert(r.source_manga_key.clone()) {
out.push(r);
}
}
out
}
/// Run a full list-only walk, diff against the DB, and enqueue missing
/// mangas as `SyncManga` jobs. Holds the (exclusive) browser lease only for
/// the cheap walk; the enqueued jobs are drained later by the crawl worker.
#[allow(clippy::too_many_arguments)]
pub async fn reconcile_missing(
browser_manager: &BrowserManager,
db: &PgPool,
rate: &HostRateLimiters,
start_url: &str,
status: Option<&crate::crawler::status::StatusHandle>,
tor: Option<&crate::crawler::tor::TorController>,
) -> anyhow::Result<ReconcileStats> {
let lease = browser_manager
.acquire()
.await
.context("acquire browser lease for reconcile pass")?;
let browser_ref: &chromiumoxide::Browser = &lease;
if let Some(s) = status {
s.set_phase(Phase::Reconciling {
walked: 0,
enqueued: 0,
})
.await;
}
// Chapter parsing is irrelevant here (we never call fetch_manga); the
// metadata-only constructor is intent-revealing and harmless.
let source = TargetSource::new(start_url.to_string()).without_chapter_parsing();
let ctx = FetchContext {
browser: browser_ref,
rate,
tor,
};
let source_id = source.id();
ensure_source(
db,
source_id,
"Target Site",
&crate::crawler::url_utils::origin_of(start_url).unwrap_or_else(|| start_url.to_string()),
)
.await
.context("ensure_source")?;
tracing::info!("starting reconcile pass (full list-only walk)");
let mut walker = source.discover(&ctx).await.context("discover failed")?;
// Full unconditional walk: collect every ref, no early stop. Yield the
// lease if a coordinated browser restart is pending so the drain isn't
// stalled — the missing set we've gathered so far is still enqueued.
let mut walked: Vec<SourceMangaRef> = Vec::new();
'outer: loop {
if browser_manager.is_restart_pending() {
tracing::info!("reconcile pass: browser restart pending — yielding partial walk");
break;
}
match walker.next_batch(&ctx).await? {
Some(batch) => {
for r in batch {
walked.push(r);
}
if let Some(s) = status {
s.set_phase(Phase::Reconciling {
walked: walked.len(),
enqueued: 0,
})
.await;
}
if browser_manager.is_restart_pending() {
tracing::info!(
"reconcile pass: browser restart pending mid-batch — yielding partial walk"
);
break 'outer;
}
}
None => break,
}
}
// Browser work is done — release before the (browser-free) diff+enqueue.
drop(lease);
let existing = repo::crawler::existing_source_keys(db, source_id)
.await
.context("existing_source_keys")?;
let blocked = repo::crawler::sync_manga_keys_with_blocking_job(db, source_id)
.await
.context("sync_manga_keys_with_blocking_job")?;
let missing = select_missing(&walked, &existing, &blocked);
let mut stats = ReconcileStats {
walked: walked.len(),
missing: missing.len(),
..Default::default()
};
for r in missing {
let payload = JobPayload::SyncManga {
source_id: source_id.to_string(),
source_manga_key: r.source_manga_key.clone(),
url: r.url.clone(),
title: r.title.clone(),
};
match jobs::enqueue(db, &payload).await {
Ok(EnqueueResult::Inserted(_)) => stats.enqueued += 1,
Ok(EnqueueResult::Skipped) => stats.skipped += 1,
Err(e) => {
tracing::warn!(key = %r.source_manga_key, error = ?e, "enqueue SyncManga failed");
stats.skipped += 1;
}
}
if let Some(s) = status {
s.set_phase(Phase::Reconciling {
walked: stats.walked,
enqueued: stats.enqueued,
})
.await;
}
}
tracing::info!(
walked = stats.walked,
missing = stats.missing,
enqueued = stats.enqueued,
skipped = stats.skipped,
"reconcile pass complete"
);
Ok(stats)
}
#[cfg(test)]
mod tests {
use super::*;
fn r(key: &str) -> SourceMangaRef {
SourceMangaRef {
source_manga_key: key.to_string(),
title: format!("Title {key}"),
url: format!("https://target.example/manga/{key}"),
}
}
fn set(keys: &[&str]) -> HashSet<String> {
keys.iter().map(|s| s.to_string()).collect()
}
#[test]
fn select_missing_returns_keys_not_in_manga_sources() {
let walked = vec![r("a"), r("b"), r("c")];
let existing = set(&["b"]);
let blocked = set(&[]);
let got: Vec<&str> = select_missing(&walked, &existing, &blocked)
.iter()
.map(|r| r.source_manga_key.as_str())
.collect();
assert_eq!(got, vec!["a", "c"]);
}
#[test]
fn select_missing_treats_dropped_rows_as_present() {
// The caller passes dropped keys in `existing` (existing_source_keys
// does not filter dropped_at), so a dropped manga is NOT re-enqueued.
let walked = vec![r("a"), r("dropped")];
let existing = set(&["dropped"]);
let got: Vec<&str> = select_missing(&walked, &existing, &set(&[]))
.iter()
.map(|r| r.source_manga_key.as_str())
.collect();
assert_eq!(got, vec!["a"]);
}
#[test]
fn select_missing_skips_keys_with_blocking_job() {
let walked = vec![r("a"), r("queued"), r("dead")];
let blocked = set(&["queued", "dead"]);
let got: Vec<&str> = select_missing(&walked, &set(&[]), &blocked)
.iter()
.map(|r| r.source_manga_key.as_str())
.collect();
assert_eq!(got, vec!["a"]);
}
#[test]
fn select_missing_dedups_repeated_walked_keys() {
// Index drift can surface the same manga twice in one walk.
let walked = vec![r("a"), r("a"), r("b")];
let got: Vec<&str> = select_missing(&walked, &set(&[]), &set(&[]))
.iter()
.map(|r| r.source_manga_key.as_str())
.collect();
assert_eq!(got, vec!["a", "b"]);
}
}

View File

@@ -41,6 +41,10 @@ pub enum Phase {
/// Backfilling covers that failed on first attempt. `index`/`total`
/// track progress through this tick's batch.
CoverBackfill { index: usize, total: usize },
/// Reconcile pass: walking the full source list (refs only, no detail
/// visit) to find mangas missing from the DB. `walked` is refs seen so
/// far this walk; `enqueued` is missing mangas queued as `SyncManga`.
Reconciling { walked: usize, enqueued: usize },
}
/// A chapter being downloaded right now, with a live page count. Keyed in