feat(orm)!: transactions support

[m4tx]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 86.63484% with 56 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
cot/src/db.rs	83.92%	16 Missing and 29 partials ⚠️
cot/src/auth/db.rs	75.00%	3 Missing and 1 partial ⚠️
cot/src/session/store/db.rs	88.57%	0 Missing and 4 partials ⚠️
cot/src/db/sea_query_db.rs	96.05%	0 Missing and 3 partials ⚠️

Flag	Coverage Δ
rust	90.08% <86.63%> (-0.18%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
cot-macros/src/model.rs	96.36% <ø> (ø)
cot/src/db/impl_mysql.rs	100.00% <ø> (ø)
cot/src/db/impl_postgres.rs	100.00% <ø> (ø)
cot/src/db/impl_sqlite.rs	94.73% <ø> (ø)
cot/src/db/query.rs	84.16% <100.00%> (+0.58%)	⬆️
cot/src/db/relations.rs	91.66% <100.00%> (ø)
cot/src/db/sea_query_db.rs	96.75% <96.05%> (-0.52%)	⬇️
cot/src/auth/db.rs	82.71% <75.00%> (+0.14%)	⬆️
cot/src/session/store/db.rs	83.13% <88.57%> (+2.05%)	⬆️
cot/src/db.rs	82.95% <83.92%> (-3.88%)	⬇️

... and 1 file with indirect coverage changes

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[github-actions]

Bencher Report

Project	cot
Branch	transactions
Testbed	github-ubuntu-latest

🚨 1 Alert

Benchmark	Measure Units	View	Benchmark Result (Result Δ%)	Upper Boundary (Limit %)
empty_router/empty_router	Latency milliseconds (ms)	📈 plot 🚷 threshold 🚨 alert (🔔)	13.45 ms (+85.47%) Baseline: 7.25 ms	12.55 ms (107.19%)

Click to view all benchmark results

Benchmark	Latency	Benchmark Result milliseconds (ms) (Result Δ%)	Upper Boundary milliseconds (ms) (Limit %)
empty_router/empty_router	📈 view plot 🚷 view threshold 🚨 view alert (🔔)	13.45 ms (+85.47%) Baseline: 7.25 ms	12.55 ms (107.19%)
json_api/json_api	📈 view plot 🚷 view threshold	1.12 ms (+3.82%) Baseline: 1.08 ms	1.37 ms (82.07%)
nested_routers/nested_routers	📈 view plot 🚷 view threshold	1.06 ms (+5.58%) Baseline: 1.01 ms	1.24 ms (85.45%)
single_root_route/single_root_route	📈 view plot 🚷 view threshold	1.01 ms (+4.67%) Baseline: 0.97 ms	1.21 ms (84.13%)
single_root_route_burst/single_root_route_burst	📈 view plot 🚷 view threshold	17.02 ms (-2.04%) Baseline: 17.37 ms	21.69 ms (78.47%)

🐰 View full continuous benchmarking report in Bencher

[Copilot]

Pull request overview

Adds first-class transaction support to Cot’s ORM layer and updates higher-level components (session store, auth, examples, and macros) to execute ORM operations against either a direct database connection or an in-flight transaction.

Changes:

• Introduces a Transaction type and internal executor abstraction so ORM operations can run on both &Database and transactions (including nested transactions/savepoints).
• Refactors ORM APIs (DatabaseBackend, Model, Query, ForeignKey, auth DB helpers) to accept mutable executors and support transactional execution.
• Updates session store and example app initialization to use transactions; adds new DB tests covering commit/rollback/nested behavior.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
examples/admin/src/main.rs	Uses a DB transaction when ensuring the admin user exists.
cot/tests/db.rs	Adds tests for transaction commit, rollback, and nested transactions.
cot/src/session/store/db.rs	Wraps session save in a transaction and reuses create logic via an executor parameter.
cot/src/session/store/db.rs	(same file) Adjusts DB calls to work with either connection or transaction.
cot/src/db/sea_query_db.rs	Exposes backend macro internally and adds a SeaQuery-based transaction backend macro.
cot/src/db/relations.rs	Updates foreign key loading to operate on a mutable executor.
cot/src/db/query.rs	Refactors query execution to accept a generic mutable DatabaseBackend, including count.
cot/src/db/impl_sqlite.rs	Wires in the SeaQuery transaction backend for SQLite.
cot/src/db/impl_postgres.rs	Wires in the SeaQuery transaction backend for PostgreSQL.
cot/src/db/impl_mysql.rs	Wires in the SeaQuery transaction backend for MySQL.
cot/src/db.rs	Adds Transaction, executor plumbing, and updates DatabaseBackend to be &mut self-based.
cot/src/auth/db.rs	Updates auth DB helpers/tests to work with the new mutable-executor ORM APIs.
cot-macros/src/model.rs	Updates generated Model impls to use cot::db::async_trait and the new executor signatures.

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[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

cot/src/session/store/db.rs:136

• This helper is used by create()/save() but still uses unwrap()/expect() when building the Session model (JSON serialization + expiry conversion). Those fallible conversions should return a session_store::Error instead of panicking, to avoid crashing the server on unexpected input.

                expiry,
            };

            let res = db.insert(&mut model).await;

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated no new comments.