feat: cover retry backfill + admin force-resync for manga & chapter (0.50.0)

Adds a per-tick cover-backfill pass to the crawler daemon so mangas whose
cover download failed on first attempt get retried — the metadata pass's
early-stop optimisation otherwise prevents the walk from revisiting them.

Adds admin-only POST /admin/mangas/:id/resync and POST /admin/chapters/:id/resync
that refetch metadata + cover (or chapter content with force_refetch) from the
crawler source synchronously and return the refreshed row. Surfaced in the
UI as "Force resync" buttons on the manga detail and reader pages,
admin-only via session.user.is_admin.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-06-01 22:00:09 +02:00
parent 5c22dfdb41
commit c134bdbbde
19 changed files with 1505 additions and 17 deletions

View File

@@ -5,6 +5,7 @@
//! `crate::auth::extractor::RequireAdmin`).
pub mod mangas;
pub mod resync;
pub mod system;
pub mod users;
@@ -16,5 +17,6 @@ pub fn routes() -> Router<AppState> {
Router::new()
.merge(users::routes())
.merge(mangas::routes())
.merge(resync::routes())
.merge(system::routes())
}

View File

@@ -0,0 +1,176 @@
//! Admin-triggered force resync of a single manga's metadata + cover,
//! or a single chapter's content.
//!
//! Both endpoints are admin-only (`RequireAdmin`, cookie-only) and run
//! synchronously with the request — the response carries the refreshed
//! resource so the UI can swap it in without a follow-up GET. The work
//! itself is delegated to [`ResyncService`] (set on AppState by
//! `app::build` when the crawler daemon is enabled); when the daemon
//! is disabled, both handlers return 503.
use axum::extract::{Path, State};
use axum::routing::post;
use axum::{Json, Router};
use serde::Serialize;
use serde_json::json;
use uuid::Uuid;
use crate::app::AppState;
use crate::auth::extractor::RequireAdmin;
use crate::crawler::resync::{ChapterResyncOutcome, ResyncError};
use crate::domain::manga::MangaDetail;
use crate::domain::Chapter;
use crate::error::{AppError, AppResult};
use crate::repo;
use crate::repo::crawler::UpsertStatus;
pub fn routes() -> Router<AppState> {
Router::new()
.route("/admin/mangas/:id/resync", post(resync_manga))
.route("/admin/chapters/:id/resync", post(resync_chapter))
}
#[derive(Debug, Serialize)]
pub struct MangaResyncResponse {
pub manga: MangaDetail,
/// `"new" | "updated" | "unchanged"` — mirrors [`UpsertStatus`].
pub metadata_status: &'static str,
pub cover_fetched: bool,
}
#[derive(Debug, Serialize)]
pub struct ChapterResyncResponse {
pub chapter: Chapter,
/// `"fetched" | "skipped"` — whether new pages landed or the
/// service short-circuited (e.g. chapter already had pages and the
/// session was lost so force was downgraded).
pub outcome: &'static str,
/// Page count when `outcome == "fetched"`. `None` for `skipped`.
pub pages: Option<usize>,
}
async fn resync_manga(
State(state): State<AppState>,
admin: RequireAdmin,
Path(manga_id): Path<Uuid>,
) -> AppResult<Json<MangaResyncResponse>> {
if !repo::manga::exists(&state.db, manga_id).await? {
return Err(AppError::NotFound);
}
let resync = state
.resync
.as_ref()
.ok_or_else(|| AppError::ServiceUnavailable(
"crawler daemon is disabled; force resync unavailable".into(),
))?;
let outcome = resync.resync_manga(manga_id).await.map_err(map_resync_err)?;
// Audit the action with the actor + the resync outcome so an
// operator-of-operators can answer "who refetched this manga, and
// did the cover land?" from the log alone.
repo::admin_audit::insert(
&state.db,
admin.0.id,
"manga_resync",
"manga",
Some(manga_id),
json!({
"metadata_status": status_str(outcome.metadata_status),
"cover_fetched": outcome.cover_fetched,
}),
)
.await?;
let manga = repo::manga::get_detail(&state.db, manga_id).await?;
Ok(Json(MangaResyncResponse {
manga,
metadata_status: status_str(outcome.metadata_status),
cover_fetched: outcome.cover_fetched,
}))
}
async fn resync_chapter(
State(state): State<AppState>,
admin: RequireAdmin,
Path(chapter_id): Path<Uuid>,
) -> AppResult<Json<ChapterResyncResponse>> {
let resync = state
.resync
.as_ref()
.ok_or_else(|| AppError::ServiceUnavailable(
"crawler daemon is disabled; force resync unavailable".into(),
))?;
// Look up the manga the chapter belongs to so we can return the
// refreshed chapter row in the response and 404 for unknown ids.
let manga_id: Option<Uuid> =
sqlx::query_scalar("SELECT manga_id FROM chapters WHERE id = $1")
.bind(chapter_id)
.fetch_optional(&state.db)
.await?;
let Some(manga_id) = manga_id else {
return Err(AppError::NotFound);
};
let outcome = resync
.resync_chapter(chapter_id)
.await
.map_err(map_resync_err)?;
let (outcome_str, pages) = match &outcome {
ChapterResyncOutcome::Fetched { pages, .. } => ("fetched", Some(*pages)),
ChapterResyncOutcome::Skipped { .. } => ("skipped", None),
};
repo::admin_audit::insert(
&state.db,
admin.0.id,
"chapter_resync",
"chapter",
Some(chapter_id),
json!({
"outcome": outcome_str,
"pages": pages,
}),
)
.await?;
let chapter = repo::chapter::find_by_id_in_manga(&state.db, manga_id, chapter_id)
.await?
.ok_or(AppError::NotFound)?;
Ok(Json(ChapterResyncResponse {
chapter,
outcome: outcome_str,
pages,
}))
}
fn status_str(s: UpsertStatus) -> &'static str {
match s {
UpsertStatus::New => "new",
UpsertStatus::Updated => "updated",
UpsertStatus::Unchanged => "unchanged",
}
}
/// Map [`ResyncError`] (and the anyhow envelopes wrapping it) onto the
/// right [`AppError`]. Anything else surfaces as a generic 500 via the
/// `Other` arm — the operator sees the underlying anyhow chain in
/// server logs, the client sees a clean envelope.
fn map_resync_err(err: anyhow::Error) -> AppError {
if let Some(rerr) = err.downcast_ref::<ResyncError>() {
match rerr {
ResyncError::NoMangaSource => AppError::ValidationFailed {
message: "manga has no live crawler source — cannot resync".into(),
details: json!({ "manga": "no_source" }),
},
ResyncError::NoChapterSource => AppError::ValidationFailed {
message: "chapter has no live crawler source — cannot resync".into(),
details: json!({ "chapter": "no_source" }),
},
}
} else {
AppError::Other(err)
}
}

View File

@@ -24,6 +24,7 @@ use crate::crawler::daemon::{self, ChapterDispatcher, DaemonConfig, MetadataPass
use crate::crawler::jobs::JobPayload;
use crate::crawler::pipeline::{self, MetadataStats};
use crate::crawler::rate_limit::HostRateLimiters;
use crate::crawler::resync::{RealResyncService, ResyncService};
use crate::crawler::safety::DownloadAllowlist;
use crate::crawler::session;
use crate::repo;
@@ -39,6 +40,12 @@ pub struct AppState {
/// One instance per AppState so tests stay isolated across the
/// same process.
pub auth_limiter: Arc<AuthRateLimiter>,
/// Admin-triggered force resync. `None` when the crawler daemon
/// is disabled (`CRAWLER_DAEMON=false`); admin handlers gate on
/// `.is_some()` and return 503 otherwise. Set by [`build`] from the
/// same wiring that builds the daemon's chapter dispatcher, so a
/// force resync uses the daemon's BrowserManager + rate limiters.
pub resync: Option<Arc<dyn ResyncService>>,
}
/// Bundle returned by [`build`]. The router is what `axum::serve` consumes;
@@ -73,11 +80,12 @@ pub async fn build(config: Config) -> anyhow::Result<AppHandle> {
let storage: Arc<dyn Storage> = Arc::new(LocalStorage::new(config.storage_dir.clone()));
let daemon = if config.crawler.daemon_enabled {
Some(spawn_crawler_daemon(db.clone(), Arc::clone(&storage), &config.crawler).await?)
let (daemon, resync) = if config.crawler.daemon_enabled {
let spawned = spawn_crawler_daemon(db.clone(), Arc::clone(&storage), &config.crawler).await?;
(Some(spawned.handle), Some(spawned.resync))
} else {
tracing::info!("crawler daemon disabled (CRAWLER_DAEMON=false)");
None
(None, None)
};
let auth_limiter = Arc::new(AuthRateLimiter::new(config.auth.rate_limit));
@@ -87,16 +95,26 @@ pub async fn build(config: Config) -> anyhow::Result<AppHandle> {
auth: config.auth.clone(),
upload: config.upload.clone(),
auth_limiter,
resync,
};
let router = router(state).layer(cors_layer(&config.cors_allowed_origins));
Ok(AppHandle { router, daemon })
}
/// Bundle returned by [`spawn_crawler_daemon`]. The handle owns the
/// daemon's tasks; `resync` is the operator-trigger service shared with
/// `AppState` so admin endpoints can call into the same browser /
/// rate-limit machinery.
struct SpawnedDaemon {
handle: daemon::DaemonHandle,
resync: Arc<dyn ResyncService>,
}
async fn spawn_crawler_daemon(
db: PgPool,
storage: Arc<dyn Storage>,
cfg: &CrawlerConfig,
) -> anyhow::Result<daemon::DaemonHandle> {
) -> anyhow::Result<SpawnedDaemon> {
// Reqwest client with cookie jar pre-seeded so CDN image fetches
// include PHPSESSID. Same shape as bin/crawler.rs main().
let cookie_jar = Arc::new(reqwest::cookie::Jar::default());
@@ -198,6 +216,17 @@ async fn spawn_crawler_daemon(
});
let dispatcher: Arc<dyn ChapterDispatcher> = Arc::new(RealChapterDispatcher {
browser_manager: Arc::clone(&browser_manager),
db: db.clone(),
storage: Arc::clone(&storage),
http: http.clone(),
rate: Arc::clone(&rate),
download_allowlist: cfg.download_allowlist.clone(),
max_image_bytes: cfg.max_image_bytes,
tor: tor.as_ref().map(Arc::clone),
});
let resync: Arc<dyn ResyncService> = Arc::new(RealResyncService {
browser_manager: Arc::clone(&browser_manager),
db: db.clone(),
storage: Arc::clone(&storage),
@@ -242,7 +271,10 @@ async fn spawn_crawler_daemon(
},
);
Ok(daemon_handle)
Ok(SpawnedDaemon {
handle: daemon_handle,
resync,
})
}
// Real impls of the daemon traits, owning the browser manager + I/O. Kept
@@ -285,6 +317,36 @@ impl MetadataPass for RealMetadataPass {
self.browser_manager.invalidate().await;
}
}
// Cover backfill follows the metadata pass even when the pass
// errored — the early-stop walk can complete its work and bail
// late, and a transient browser failure shouldn't cancel the
// residual cover backlog. The backfill has its own per-call cap
// so a runaway error stream can't monopolise the tick.
match pipeline::backfill_missing_covers(
&self.browser_manager,
&self.db,
self.storage.as_ref(),
&self.http,
&self.rate,
pipeline::COVER_BACKFILL_DEFAULT_MAX,
&self.download_allowlist,
self.max_image_bytes,
self.tor.as_deref(),
)
.await
{
Ok(stats) => {
if stats.considered > 0 {
tracing::info!(?stats, "cover backfill complete");
}
}
Err(e) => {
tracing::warn!(error = ?e, "cover backfill failed");
if crate::crawler::nav::anyhow_looks_browser_dead(&e) {
self.browser_manager.invalidate().await;
}
}
}
result
}
}

View File

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

View File

@@ -13,7 +13,7 @@ use crate::crawler::jobs::{self, EnqueueResult, JobPayload};
use crate::crawler::rate_limit::HostRateLimiters;
use crate::crawler::safety::{fetch_bytes_capped, looks_like_image, DownloadAllowlist};
use crate::crawler::source::target::TargetSource;
use crate::crawler::source::{FetchContext, Source};
use crate::crawler::source::{FetchContext, Source, SourceMangaRef};
use crate::repo;
use crate::repo::crawler::UpsertStatus;
use crate::storage::Storage;
@@ -523,12 +523,133 @@ pub struct EnqueueSummary {
pub failed: usize,
}
#[derive(Debug, Default, Clone, Copy)]
pub struct CoverBackfillStats {
pub considered: usize,
pub fetched: usize,
pub failed: usize,
}
/// Default per-tick cap for [`backfill_missing_covers`]. The metadata pass
/// already retries covers when its walk reaches the affected manga; this
/// backfill exists to catch the residual case where the early-stop
/// optimisation prevents the walk from reaching mangas whose cover failed
/// on first attempt. A small cap is enough because the backlog only grows
/// from sporadic download failures, not from systematic misses.
pub const COVER_BACKFILL_DEFAULT_MAX: usize = 10;
/// Re-attempt cover downloads for mangas where `cover_image_path IS NULL`
/// but a live `manga_sources` row exists. Refetches the source detail
/// page (which is where the cover URL lives) and downloads the cover.
///
/// Bounded by `max_mangas` per call so a steady stream of failing covers
/// — e.g. a CDN host that's persistently 502 — can't monopolise a cron
/// tick. Orders by `manga_sources.last_seen_at DESC` so the freshest
/// missing-cover mangas are addressed first.
///
/// Failures are logged and counted, not raised: a single bad cover URL
/// must not stall every other backfill behind it.
#[allow(clippy::too_many_arguments)]
pub async fn backfill_missing_covers(
browser_manager: &BrowserManager,
db: &PgPool,
storage: &dyn Storage,
http: &reqwest::Client,
rate: &HostRateLimiters,
max_mangas: usize,
allowlist: &DownloadAllowlist,
max_image_bytes: usize,
tor: Option<&crate::crawler::tor::TorController>,
) -> anyhow::Result<CoverBackfillStats> {
let mut stats = CoverBackfillStats::default();
if max_mangas == 0 {
return Ok(stats);
}
let entries = repo::crawler::list_missing_covers(db, max_mangas as i64)
.await
.context("list_missing_covers")?;
if entries.is_empty() {
return Ok(stats);
}
let lease = browser_manager
.acquire()
.await
.context("acquire browser lease for cover backfill")?;
let browser_ref: &chromiumoxide::Browser = &lease;
let ctx = FetchContext { browser: browser_ref, rate, tor };
for entry in entries {
stats.considered += 1;
// Metadata-only TargetSource: skip chapter-list parsing so a
// missing-cover refetch doesn't soft-drop chapters on a partial
// render. Cover URL alone is what we need.
let source = TargetSource::new(entry.source_url.clone()).without_chapter_parsing();
let r = SourceMangaRef {
source_manga_key: entry.source_manga_key.clone(),
title: String::new(),
url: entry.source_url.clone(),
};
let cover_url = match source.fetch_manga(&ctx, &r).await {
Ok(manga) => manga.cover_url,
Err(e) => {
tracing::warn!(
manga_id = %entry.manga_id,
url = %entry.source_url,
error = ?e,
"cover backfill: fetch_manga failed"
);
stats.failed += 1;
continue;
}
};
let Some(cover_url) = cover_url else {
tracing::warn!(
manga_id = %entry.manga_id,
url = %entry.source_url,
"cover backfill: source returned no cover_url"
);
stats.failed += 1;
continue;
};
match download_and_store_cover(
db,
storage,
http,
rate,
&entry.source_url,
entry.manga_id,
&cover_url,
allowlist,
max_image_bytes,
)
.await
{
Ok(()) => stats.fetched += 1,
Err(e) => {
tracing::warn!(
manga_id = %entry.manga_id,
url = %entry.source_url,
error = ?e,
"cover backfill: download failed"
);
stats.failed += 1;
}
}
}
drop(lease);
Ok(stats)
}
/// Download a cover image and persist its storage path. Local to the
/// pipeline because the CLI still calls it from its inline chapter-content
/// loop; once the worker pool fully replaces that path we can fold this
/// into `pipeline` proper.
#[allow(clippy::too_many_arguments)]
async fn download_and_store_cover(
pub(crate) async fn download_and_store_cover(
db: &PgPool,
storage: &dyn Storage,
http: &reqwest::Client,

View File

@@ -0,0 +1,277 @@
//! Admin-triggered resync of a single manga's metadata + cover, or a
//! single chapter's content.
//!
//! The cron tick already retries covers and chapter content on its own
//! schedule. This module exists for the operator-controlled path:
//! "this manga's metadata is stale / its cover never landed / this
//! chapter is broken — pull from source now, not at the next daily
//! tick." Wired into the admin API, never into the queue, so the work
//! happens synchronously with the HTTP request and the admin sees the
//! refreshed row in the response.
//!
//! Shares the daemon's [`BrowserManager`], rate limiter, HTTP client,
//! and TOR controller so a force resync respects the same per-host
//! pacing and recircuit budget the daily crawl uses — admin actions
//! must not let an operator accidentally hammer the source.
use std::sync::Arc;
use anyhow::Context;
use async_trait::async_trait;
use sqlx::PgPool;
use uuid::Uuid;
use crate::crawler::browser_manager::BrowserManager;
use crate::crawler::content::{self, SyncOutcome};
use crate::crawler::pipeline;
use crate::crawler::rate_limit::HostRateLimiters;
use crate::crawler::safety::DownloadAllowlist;
use crate::crawler::source::target::TargetSource;
use crate::crawler::source::{FetchContext, Source, SourceMangaRef};
use crate::crawler::tor::TorController;
use crate::repo;
use crate::repo::crawler::UpsertStatus;
use crate::storage::Storage;
/// Outcome of [`ResyncService::resync_manga`]. Mirrors the bits the
/// admin UI cares about — was the row actually re-upserted, did the
/// cover land — so the response can show "metadata refreshed, cover
/// re-downloaded" or "metadata unchanged" without a second round-trip.
#[derive(Debug, Clone, Copy)]
pub struct MangaResyncOutcome {
pub manga_id: Uuid,
pub metadata_status: UpsertStatus,
pub cover_fetched: bool,
}
/// Outcome of [`ResyncService::resync_chapter`]. `Fetched(pages)` is the
/// success case; `Skipped` means the source row was already gone or the
/// chapter had no live source.
#[derive(Debug, Clone)]
pub enum ChapterResyncOutcome {
Fetched { chapter_id: Uuid, pages: usize },
Skipped { chapter_id: Uuid, reason: String },
}
/// Service exposed by the daemon to the admin API. Optional on
/// [`AppState`] — `None` when the crawler daemon is disabled
/// (`CRAWLER_DAEMON=false`), in which case admin handlers return 503.
#[async_trait]
pub trait ResyncService: Send + Sync {
async fn resync_manga(&self, manga_id: Uuid) -> anyhow::Result<MangaResyncOutcome>;
async fn resync_chapter(&self, chapter_id: Uuid) -> anyhow::Result<ChapterResyncOutcome>;
}
/// Errors with a stable shape so the API layer can map them to the
/// right HTTP status (404 vs 422 vs 5xx). Anything else surfaces as a
/// generic 500.
#[derive(Debug, thiserror::Error)]
pub enum ResyncError {
#[error("manga has no source to resync from")]
NoMangaSource,
#[error("chapter has no source to resync from")]
NoChapterSource,
}
pub struct RealResyncService {
pub browser_manager: Arc<BrowserManager>,
pub db: PgPool,
pub storage: Arc<dyn Storage>,
pub http: reqwest::Client,
pub rate: Arc<HostRateLimiters>,
pub download_allowlist: DownloadAllowlist,
pub max_image_bytes: usize,
pub tor: Option<Arc<TorController>>,
}
#[async_trait]
impl ResyncService for RealResyncService {
async fn resync_manga(&self, manga_id: Uuid) -> anyhow::Result<MangaResyncOutcome> {
// Pick the freshest live source row. Multi-source mangas
// (theoretical — only one Source impl today) get the row whose
// `last_seen_at` is newest; soft-dropped rows are skipped.
let row: Option<(String, String, String)> = sqlx::query_as(
"SELECT source_id, source_manga_key, source_url \
FROM manga_sources \
WHERE manga_id = $1 AND dropped_at IS NULL \
ORDER BY last_seen_at DESC \
LIMIT 1",
)
.bind(manga_id)
.fetch_optional(&self.db)
.await
.context("look up manga_sources for resync")?;
let Some((_source_id, source_manga_key, source_url)) = row else {
return Err(ResyncError::NoMangaSource.into());
};
let lease = self
.browser_manager
.acquire()
.await
.context("acquire browser lease for manga resync")?;
let browser_ref: &chromiumoxide::Browser = &lease;
let ctx = FetchContext {
browser: browser_ref,
rate: &self.rate,
tor: self.tor.as_deref(),
};
// Parse chapters too — a force resync is "make this manga fully
// current," not just metadata. The full pipeline handles the
// partial-render guard for us; we replicate the same caution
// here by skipping the chapter sync when the parser returned
// empty but the manga previously had chapters.
let source = TargetSource::new(source_url.clone());
let r = SourceMangaRef {
source_manga_key: source_manga_key.clone(),
title: String::new(),
url: source_url.clone(),
};
let manga = source
.fetch_manga(&ctx, &r)
.await
.with_context(|| format!("fetch_manga during resync of {manga_id}"))?;
// Partial-render guard: same logic as run_metadata_pass.
let source_id = source.id();
if !manga.chapters.is_empty() || {
let prior = repo::crawler::live_chapter_count_for_source_manga(
&self.db,
source_id,
&source_manga_key,
)
.await
.unwrap_or(0);
prior == 0
} {
// Either the new fetch surfaced chapters, or there were
// none before either — chapter sync is safe to run.
} else {
tracing::warn!(
%manga_id,
source_url = %source_url,
"resync_manga: fetch returned empty chapters but prior count > 0; skipping chapter sync to avoid soft-drop"
);
}
let upsert = repo::crawler::upsert_manga_from_source(
&self.db,
source_id,
&source_url,
&manga,
)
.await
.with_context(|| format!("upsert_manga_from_source during resync of {manga_id}"))?;
// Cover refetch: force-download regardless of UpsertStatus.
// Admin clicked "resync" because they want the cover too.
let mut cover_fetched = false;
if let Some(cover_url) = manga.cover_url.as_deref() {
match pipeline::download_and_store_cover(
&self.db,
self.storage.as_ref(),
&self.http,
&self.rate,
&source_url,
upsert.manga_id,
cover_url,
&self.download_allowlist,
self.max_image_bytes,
)
.await
{
Ok(()) => cover_fetched = true,
Err(e) => tracing::warn!(
%manga_id,
error = ?e,
"resync_manga: cover download failed"
),
}
}
// Chapter sync — only when the partial-render guard above
// didn't bail.
let prior_chapter_count = repo::crawler::live_chapter_count_for_source_manga(
&self.db,
source_id,
&source_manga_key,
)
.await
.unwrap_or(0);
if !manga.chapters.is_empty() || prior_chapter_count == 0 {
match repo::crawler::sync_manga_chapters(
&self.db,
source_id,
upsert.manga_id,
&manga.chapters,
)
.await
{
Ok(diff) => tracing::info!(
%manga_id,
new = diff.new,
refreshed = diff.refreshed,
dropped = diff.dropped,
"resync_manga: chapters synced"
),
Err(e) => tracing::warn!(
%manga_id,
error = ?e,
"resync_manga: chapter sync failed"
),
}
}
drop(lease);
Ok(MangaResyncOutcome {
manga_id: upsert.manga_id,
metadata_status: upsert.status,
cover_fetched,
})
}
async fn resync_chapter(&self, chapter_id: Uuid) -> anyhow::Result<ChapterResyncOutcome> {
let row = repo::chapter::dispatch_target(&self.db, chapter_id)
.await
.context("look up chapter_sources for resync")?;
let Some((manga_id, source_url)) = row else {
return Err(ResyncError::NoChapterSource.into());
};
let lease = self
.browser_manager
.acquire()
.await
.context("acquire browser lease for chapter resync")?;
let result = content::sync_chapter_content(
&lease,
&self.db,
self.storage.as_ref(),
&self.http,
&self.rate,
chapter_id,
manga_id,
&source_url,
true,
&self.download_allowlist,
self.max_image_bytes,
self.tor.as_deref(),
)
.await;
drop(lease);
match result? {
SyncOutcome::Fetched { pages } => {
Ok(ChapterResyncOutcome::Fetched { chapter_id, pages })
}
SyncOutcome::Skipped => Ok(ChapterResyncOutcome::Skipped {
chapter_id,
reason: "chapter already had pages on disk".to_string(),
}),
SyncOutcome::SessionExpired => {
anyhow::bail!("source session expired — operator must refresh PHPSESSID")
}
}
}
}

View File

@@ -21,6 +21,11 @@ pub enum AppError {
PayloadTooLarge(String),
#[error("unsupported media type: {0}")]
UnsupportedMediaType(String),
/// 503 — a feature is currently unavailable, distinct from a 5xx
/// internal error. Used when admin actions require the crawler
/// daemon but it's been disabled (`CRAWLER_DAEMON=false`).
#[error("service unavailable: {0}")]
ServiceUnavailable(String),
/// 429 with an optional `Retry-After` header value (in seconds).
#[error("too many requests")]
TooManyRequests {
@@ -56,6 +61,7 @@ impl AppError {
AppError::Conflict(_) => "conflict",
AppError::PayloadTooLarge(_) => "payload_too_large",
AppError::UnsupportedMediaType(_) => "unsupported_media_type",
AppError::ServiceUnavailable(_) => "service_unavailable",
AppError::TooManyRequests { .. } => "too_many_requests",
AppError::ValidationFailed { .. } => "validation_failed",
AppError::Database(sqlx::Error::RowNotFound) => "not_found",
@@ -85,6 +91,9 @@ impl IntoResponse for AppError {
AppError::UnsupportedMediaType(msg) => {
(StatusCode::UNSUPPORTED_MEDIA_TYPE, msg.clone(), None)
}
AppError::ServiceUnavailable(msg) => {
(StatusCode::SERVICE_UNAVAILABLE, msg.clone(), None)
}
AppError::TooManyRequests { retry_after_secs } => {
// Emit `Retry-After: N` (RFC 6585 §4) so a well-behaved
// client can back off correctly. Done by building the

View File

@@ -542,6 +542,51 @@ pub async fn mark_run_completed(pool: &PgPool, source_id: &str) -> sqlx::Result<
Ok(())
}
/// List mangas whose `cover_image_path IS NULL` but a live
/// `manga_sources` row still attaches them to a source. The bounded
/// result feeds the cover-backfill pass in [`crate::crawler::pipeline`]:
/// each entry is one (manga, freshest source row) pair where a cover
/// re-download is in order.
///
/// Per-manga deduplication uses `DISTINCT ON (m.id)` keyed on the row
/// with the newest `last_seen_at`, so a manga that's surfaced by
/// multiple sources only produces one row (the freshest). Sort is
/// stable for tests.
pub async fn list_missing_covers(
pool: &PgPool,
max: i64,
) -> sqlx::Result<Vec<MissingCoverEntry>> {
let rows: Vec<(Uuid, String, String)> = sqlx::query_as(
r#"
SELECT DISTINCT ON (m.id) m.id, ms.source_manga_key, ms.source_url
FROM mangas m
JOIN manga_sources ms ON ms.manga_id = m.id
WHERE m.cover_image_path IS NULL
AND ms.dropped_at IS NULL
ORDER BY m.id, ms.last_seen_at DESC
LIMIT $1
"#,
)
.bind(max)
.fetch_all(pool)
.await?;
Ok(rows
.into_iter()
.map(|(manga_id, source_manga_key, source_url)| MissingCoverEntry {
manga_id,
source_manga_key,
source_url,
})
.collect())
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MissingCoverEntry {
pub manga_id: Uuid,
pub source_manga_key: String,
pub source_url: String,
}
/// Read the recovery flag for `source_id`. A missing row OR an
/// unparseable value reads as `true` ("clean") — the former covers the
/// first-ever run on a virgin DB (no recovery needed), the latter