domain-reservations

Capacity management and reservation system to prevent overbooking

What it is for

domain-reservations: Capacity management and reservation system

Overview

This crate provides a reservation system to prevent overbooking and overselling. It manages capacity pools, temporary holds, and confirmed reservations with automatic expiration and concurrency safety.

Layer

Domain - depends on: foundation-basemodels

Key Concepts

• CapacityPool - A scarce resource with limited availability (seats, rooms, etc.)
• Hold - A temporary reservation that expires if not converted
• Reservation - A confirmed booking that consumes capacity

Key Types

• CapacityPool - Defines a scarce resource with capacity
• Hold - Temporary hold on capacity with expiration
• Reservation - Confirmed reservation
• ReservationService - High-level business operations

Example

use domain_reservations::{
ReservationService, CreatePoolRequest, CreateHoldRequest, CreateReservationRequest
};

let service = ReservationService::new(pool);

// Create a capacity pool (e.g., 50 seats)
let (pool, event) = service.create_pool(CreatePoolRequest {
tenant_id,
name: "General Admission".to_string(),
description: Some("Standard seating".to_string()),
total_capacity: 50,
..Default::default()
}).await?;

// Create a hold (temporary reservation)
let (hold, events) = service.create_hold(CreateHoldRequest {
tenant_id,
pool_id: pool.id,
party_id: user_id,
quantity: 2,
duration_minutes: Some(15),
..Default::default()
}).await?;

// Convert hold to confirmed reservation
let (reservation, events) = service.convert_hold(hold.id).await?;

// Or create direct reservation (without hold)
let (reservation, events) = service.create_reservation(CreateReservationRequest {
tenant_id,
pool_id: pool.id,
party_id: user_id,
quantity: 3,
..Default::default()
}).await?;

println!("Confirmation: {}", reservation.confirmation_code);

Capabilities

No public items.

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

No public modules: the crate root is its whole surface.

Public surface

No public items.

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

Boundary

Reaches into foundation.

Shares tier domain with 41 other crates: domain-agreements, domain-ai-report, domain-billing, domain-catalog, domain-classify, domain-comments, domain-competitive-intel, domain-contact, … (41 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 flow. Which tiers this crate's own edges cross.

flowchart LR
  n_domain["domain"] --> n_foundation["foundation"]

Dependencies

Runtime, in this workspace.

Runtime, from outside the workspace.

Development, from outside the workspace.

Build. None.

Depended on by. 2 workspace crates.

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

flowchart LR
  n_application_conversation["application-conversation"] -->|uses| SELF
  n_application_reservations["application-reservations"] -->|uses| SELF
  SELF["domain-reservations"]
  SELF -->|runtime| n_foundation_basemodels["foundation-basemodels"]
  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

Error model

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

Operational characteristics

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

Configuration

No environment variable is read with a literal name anywhere in this crate. A variable whose key is computed at run time cannot be listed here, and is not claimed to be absent.

Related capabilities

2 workspace crates depend on this one: application-conversation, application-reservations.

Verification

What the tests establish, by name:

• distinct_tenants_never_block_each_other_on_the_same_pool_id — tests/pool_lock_tenant_key.rs
• lock_key_folds_every_bit_of_the_uuid — tests/pool_lock_tenant_key.rs
• pools_sharing_a_uuid_prefix_do_not_collide_within_one_tenant — tests/pool_lock_tenant_key.rs
• vendored_forge_engine_copy_is_byte_identical_to_the_canonical_migration — tests/pool_lock_tenant_key.rs
• test_already_cancelled — src/errors.rs
• test_concurrent_modification — src/errors.rs
• test_hold_duration_exceeded — src/errors.rs
• test_hold_expired — src/errors.rs
• test_hold_not_valid — src/errors.rs
• test_insufficient_capacity — src/errors.rs
• test_pool_not_accepting — src/errors.rs
• test_pool_not_found — src/errors.rs
• test_validation_error — src/errors.rs
• test_capacity_changed_event — src/events.rs
• test_event_serialization — src/events.rs
• test_hold_converted_event — src/events.rs
• test_hold_created_event — src/events.rs
• test_pool_created_event — src/events.rs
• test_reservation_cancelled_event — src/events.rs
• test_reservation_created_event — src/events.rs
• test_capacity_pool_for_entity — src/lib.rs
• test_capacity_pool_status_transitions — src/lib.rs
• test_capacity_pool_with_overbooking — src/lib.rs
• test_capacity_pool_workflow — src/lib.rs
• test_confirmation_code_uniqueness — src/lib.rs
• test_entity_ref — src/lib.rs
• test_hold_conversion — src/lib.rs
• test_hold_creation — src/lib.rs
• test_hold_expiration — src/lib.rs
• test_hold_extend — src/lib.rs
• _… 31 more_

Documentation coverage

Metrics

pie showData
    title Rust source composition
    "Code" : 2369
    "Blank or comment" : 819

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.