33f7e19077
Two concurrent calls of sync_manga_chapters for the same manga both read seen_keys, both run the drop UPDATE filtered on `NOT (key = ANY $3)`, and the later commit can soft-drop a chapter the earlier had just inserted (lost-update under MVCC). Today the cron tick is the only caller and the daemon-level advisory lock keeps it single-flight, but that lock is held on one pool connection and doesn't actually serialize the *function*: any future caller (bookmark hook, admin-triggered re-sync, parallel worker) would race against the cron. Add `pg_advisory_xact_lock(hashtextextended(manga_id::text, 0))` at the start of the transaction. Auto-releases on commit/rollback so a panic mid-call can't strand the lock. Lock keyed per-manga so calls for different mangas still parallelize. Test sync_chapters_serializes_concurrent_calls_for_same_manga spawns two tokio tasks calling the function concurrently with overlapping chapter lists and asserts every chapter survives. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
58 lines
1.6 KiB
TOML
58 lines
1.6 KiB
TOML
[package]
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name = "mangalord"
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version = "0.35.6"
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edition = "2021"
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default-run = "mangalord"
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[lib]
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path = "src/lib.rs"
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[[bin]]
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name = "mangalord"
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path = "src/main.rs"
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[[bin]]
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name = "crawler"
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path = "src/bin/crawler.rs"
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[dependencies]
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axum = { version = "0.7", features = ["macros", "multipart"] }
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tokio = { version = "1", features = ["full"] }
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sqlx = { version = "0.8", features = ["runtime-tokio", "postgres", "uuid", "chrono", "macros", "migrate"] }
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serde = { version = "1", features = ["derive"] }
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serde_json = "1"
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uuid = { version = "1", features = ["v4", "serde"] }
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chrono = { version = "0.4", features = ["serde"] }
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chrono-tz = "0.9"
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tracing = "0.1"
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tracing-subscriber = { version = "0.3", features = ["env-filter"] }
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tower = { version = "0.5", features = ["util"] }
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tower-http = { version = "0.6", features = ["trace", "cors"] }
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thiserror = "1"
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anyhow = "1"
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async-trait = "0.1"
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dotenvy = "0.15"
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argon2 = "0.5"
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rand = "0.8"
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sha2 = "0.10"
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subtle = "2"
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base64 = "0.22"
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axum-extra = { version = "0.9", features = ["cookie", "typed-header"] }
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time = "0.3"
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infer = "0.16"
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tokio-util = { version = "0.7", features = ["io"] }
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futures-core = "0.3"
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futures-util = "0.3"
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bytes = "1"
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chromiumoxide = { version = "0.7", features = ["tokio-runtime", "_fetcher-rusttls-tokio"], default-features = false }
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scraper = "0.20"
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reqwest = { version = "0.12", default-features = false, features = ["rustls-tls", "socks", "cookies", "stream"] }
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[dev-dependencies]
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tempfile = "3"
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tower = { version = "0.5", features = ["util"] }
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http-body-util = "0.1"
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mime = "0.3"
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futures-util = "0.3"
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tokio = { version = "1", features = ["test-util"] }
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