application-reservations

Forge reservations module — capacity-bounded booking. Sprint 58.

Tier	application
Role	unclassified (baselined)
Path	`crates/application/reservations`
Edition	2024
Targets	application_reservations, pg_forge_reservations
Public items	22 across 4 modules
Tests	2

What it is for

application-reservations — Layer 3 module. Sprint 58: services extracted.

B-009: before this, migrations() returned Vec::new() and migrate_pending returned Ok(0) while ignoring the pool, so capacity_pools, reservation_holds, reservations (plus the capacity/lock helper functions, crates/domain/reservations/migrations/001_reservations_init.sql and 002_pool_lock_tenant_key.sql) were never created by anything that actually called this module's own migration path. Self-contained: both files define their own trigger/lock functions (update_reservation_timestamp, reservations_uuid_lock_key) rather than depending on another module's shared helpers, and every FK targets a table created earlier in the same set.

No permission_codes() added: domain-reservations (crates/domain/reservations/src) defines no permission/capability constants to draw from — nothing to wire without inventing names.

Capabilities

`ReservationsModule`

application-reservations — Layer 3 module. Sprint 58: services extracted.

Item
`pub struct ReservationsModule`
`ReservationsModule :: fn new() -> Self`
`ReservationsModule :: fn name(& self) -> & 'static str`
`ReservationsModule :: fn version(& self) -> & 'static str`
`ReservationsModule :: fn migrations(& self) -> Vec <MigrationSet>`
`ReservationsModule :: async fn migrate_pending(& self, pool : & PgPool) -> Result <u32, MigrationError>`

`api (other)`

HTTP API routers for application-reservations.

Item
`fn admin_router <S>() -> Router <S> where S : Clone + Send + Sync + 'static, PgPool : FromRef <S>,`

`api::reservations_admin (other)`

Reservations admin REST router.

Item
`fn router <S>() -> Router <S> where S : Clone + Send + Sync + 'static, PgPool : FromRef <S>,`

`CancelInput`

Reservations admin REST router.

Item
`pub struct CancelInput`

`PartyQuery`

Reservations admin REST router.

Item
`pub struct PartyQuery`

`TenantQuery`

Reservations admin REST router.

Item
`pub struct TenantQuery`

`services::reservations (other)`

Reservations service — thin wrapper around

Item
`async fn list_pools(pool : & PgPool, tenant_id : Uuid,) -> Result <Vec <CapacityPool>, ReservationError>`
`async fn get_pool(pool : & PgPool, id : Uuid) -> Result <Option <CapacityPool>, ReservationError>`
`async fn get_available_capacity(pool : & PgPool, pool_id : Uuid) -> Result <i32, ReservationError>`
`async fn list_holds_for_party(pool : & PgPool, tenant_id : Uuid, party_id : Uuid,) -> Result <Vec <Hold>, ReservationError>`
`async fn get_hold(pool : & PgPool, id : Uuid) -> Result <Option <Hold>, ReservationError>`
`async fn release_hold(pool : & PgPool, id : Uuid) -> Result <bool, ReservationError>`
`async fn list_reservations_for_party(pool : & PgPool, tenant_id : Uuid, party_id : Uuid,) -> Result <Vec <Reservation>, ReservationError>`
`async fn get_reservation(pool : & PgPool, id : Uuid,) -> Result <Option <Reservation>, ReservationError>`
`async fn cancel_reservation(pool : & PgPool, id : Uuid, reason : Option <String>,) -> Result <bool, ReservationError>`
`async fn fulfill_reservation(pool : & PgPool, id : Uuid,) -> Result <Option <ReservationEvent>, ReservationError>`
`async fn mark_no_show(pool : & PgPool, id : Uuid) -> Result <bool, ReservationError>`

How to use it

No examples/ target and no doctest in this crate's rustdoc. The tests listed under Verification are the closest executable usage.

Module structure

application_reservations

api
api::reservations_admin
services
services::reservations

flowchart TD
  n_application_reservations["application_reservations"]
  n_application_reservations --> n_api["api"]
  n_api --> n_api__reservations_admin["reservations_admin"]
  n_application_reservations --> n_services["services"]
  n_services --> n_services__reservations["reservations"]

Public surface

`crate root`

Item	What it is
`pub struct ReservationsModule`	—
`ReservationsModule :: fn new() -> Self`	—
`ReservationsModule :: fn name(& self) -> & 'static str`	—
`ReservationsModule :: fn version(& self) -> & 'static str`	—
`ReservationsModule :: fn migrations(& self) -> Vec <MigrationSet>`	—
`ReservationsModule :: async fn migrate_pending(& self, pool : & PgPool) -> Result <u32, MigrationError>`	—

`api`

Item	What it is
`fn admin_router <S>() -> Router <S> where S : Clone + Send + Sync + 'static, PgPool : FromRef <S>,`	Admin-side reservations router (pools, holds, reservation lifecycle).

`api::reservations_admin`

Item	What it is
`pub struct TenantQuery`	—
`pub struct PartyQuery`	—
`pub struct CancelInput`	—
`fn router <S>() -> Router <S> where S : Clone + Send + Sync + 'static, PgPool : FromRef <S>,`	—

`services::reservations`

Item	What it is
`async fn list_pools(pool : & PgPool, tenant_id : Uuid,) -> Result <Vec <CapacityPool>, ReservationError>`	—
`async fn get_pool(pool : & PgPool, id : Uuid) -> Result <Option <CapacityPool>, ReservationError>`	—
`async fn get_available_capacity(pool : & PgPool, pool_id : Uuid) -> Result <i32, ReservationError>`	—
`async fn list_holds_for_party(pool : & PgPool, tenant_id : Uuid, party_id : Uuid,) -> Result <Vec <Hold>, ReservationError>`	—
`async fn get_hold(pool : & PgPool, id : Uuid) -> Result <Option <Hold>, ReservationError>`	—
`async fn release_hold(pool : & PgPool, id : Uuid) -> Result <bool, ReservationError>`	—
`async fn list_reservations_for_party(pool : & PgPool, tenant_id : Uuid, party_id : Uuid,) -> Result <Vec <Reservation>, ReservationError>`	—
`async fn get_reservation(pool : & PgPool, id : Uuid,) -> Result <Option <Reservation>, ReservationError>`	—
`async fn cancel_reservation(pool : & PgPool, id : Uuid, reason : Option <String>,) -> Result <bool, ReservationError>`	—
`async fn fulfill_reservation(pool : & PgPool, id : Uuid,) -> Result <Option <ReservationEvent>, ReservationError>`	—
`async fn mark_no_show(pool : & PgPool, id : Uuid) -> Result <bool, ReservationError>`	—

No pub use re-exports: every item above is declared in this crate.

Boundary

Reaches into domain, platform.

Shares tier application with 120 other crates: application-agreements, application-ai, application-analytics, application-approvals, application-assessments, application-audit-log, application-auth, application-billing, … (120 total).

_What this crate deliberately does NOT own is a judgment. No committed registry records one for it, so none is stated here._

Where it sits

Tier (ontology)	`application`
Architectural role (taxonomy)	`unclassified (baselined)`
Location	`crates/application/reservations`
Vocabulary in force (lexicon)	`current`

Tier flow. Which tiers this crate's own edges cross.

flowchart LR
  n_application["application"] --> n_domain["domain"]
  n_application["application"] --> n_platform["platform"]

Dependencies

Runtime, in this workspace.

Crate	Tier	Optional	Only on
`application-core`	application	no	always
`domain-reservations`	domain	no	always
`platform-dto`	platform	no	always

Runtime, from outside the workspace.

Crate	Requirement	Features	Optional	Only on
`async-trait`	`^0.1`	—	no	always
`axum`	`^0.7`	`multipart`	no	always
`chrono`	`^0.4`	`serde`	no	always
`serde`	`^1`	`derive`	no	always
`serde_json`	`^1`	—	no	always
`sqlx`	`^0.8`	`runtime-tokio`, `postgres`, `chrono`, `uuid`, `json`	no	always
`thiserror`	`^2`	—	no	always
`tracing`	`^0.1`	—	no	always
`uuid`	`^1`	`v4`, `v7`, `serde`, `js`	no	always

Development, from outside the workspace.

Crate	Requirement	Features	Optional	Only on
`tokio`	`^1`	`full`	no	always

Build. None.

Depended on by. Nothing in this workspace.

Signal flow — what reaches this crate, and what it reaches.

flowchart LR
  SELF["application-reservations"]
  SELF -->|runtime| n_application_core["application-core"]
  SELF -->|runtime| n_domain_reservations["domain-reservations"]
  SELF -->|runtime| n_platform_dto["platform-dto"]
  classDef self fill:#1f883d,stroke:#1f883d,color:#fff;
  class SELF self;

Feature flags

No Cargo features are defined: every capability is unconditional, so no consumer can receive a half-wired crate.

Targets

Kind	Name	Source
lib	`application_reservations`	`src/lib.rs`
test	`pg_forge_reservations`	`tests/pg_forge_reservations.rs`

Error model

No public error type was detected: no public item declares a type named *Error, and no public signature returns one.

Operational characteristics

Property	Evidence
async public surface	yes
async runtime	none detected
database access	yes
network I/O	yes
unsafe code	none detected
environment variables	yes

No unsafe block, unsafe fn, unsafe impl or unsafe trait was found by the parser anywhere in this crate's source.

Configuration

Variable	Read in
`CARGO_PKG_VERSION`	`src/lib.rs`

No workspace crate depends on this one.

Verification

Kind	Count
Unit tests	1
Integration tests	1
Examples	0
Doctests	0

Evidence by module. How often each public module is named by something executable.

Module	Tests	Examples	Consumers
`crate root`	1	0	0
`api`	1	0	0
`api::reservations_admin`	4	0	0
`services::reservations`	11	0	0

What the tests establish, by name:

migrate_pending_creates_capacity_pools_table — tests/pg_forge_reservations.rs
test_module_migrations_non_empty — src/lib.rs

Documentation coverage

Measure	Documented	Total
Public items with rustdoc	1	22
Public modules with a `//!` block	3	4

pie showData
    title Public items with rustdoc
    "Documented" : 1
    "No rustdoc detected" : 21

Metrics

Metric	Value
Rust source files	5
Source lines	504
Code lines	375
Public API items	22
Public modules	4
Tests	2
Examples	0
Cargo features	0
Direct runtime dependencies	12
Workspace reverse dependencies	0

pie showData
    title Public API by kind
    "function" : 13
    "method" : 5
    "struct" : 4

pie showData
    title Rust source composition
    "Code" : 375
    "Blank or comment" : 129

Generation

Rendered by tools-corpus corpus readme from repository evidence alone, renderer schema 2, lexicon current. No model, network service or database was consulted. Regenerate with tools-corpus corpus readme --write; verify with --check.

What it is for

Capabilities

ReservationsModule

api (other)

api::reservations_admin (other)

CancelInput

PartyQuery

TenantQuery

services::reservations (other)

How to use it

Module structure

Public surface

Boundary

Where it sits

Dependencies

Feature flags

Targets

Error model

Operational characteristics

Configuration

Related capabilities

Verification

Documentation coverage

Metrics

Generation

`ReservationsModule`

`api (other)`

`api::reservations_admin (other)`

`CancelInput`

`PartyQuery`

`TenantQuery`

`services::reservations (other)`