Module adapters 

Developer: s4gor Github: https://github.com/s4gor

Database adapter traits

This module defines the core traits that all database implementations must provide. These traits enable:

• Multi-database support (PostgreSQL, MySQL, SQLite, etc.)
• Pluggable migration runners
• Database-agnostic schema inspection

Design Rationale

We separate concerns into three main traits:

1. DatabaseAdapter: Connection management and factory for other adapters
2. SchemaInspector: Read-only schema introspection
3. MigrationRunner: Write operations for applying migrations

This separation allows:

• Read-only operations (inspection, audit) without write capabilities
• Different migration strategies (SQL files, Rust code, external tools)
• Testing with mock implementations
• Composition of different adapters

Structs

MigrationResult

Result of a migration execution

Traits

DatabaseAdapter

Main database adapter trait

LockGuard

Lock guard for tenant schema locks

MigrationRunner

Migration runner trait for executing schema changes

SchemaInspector

Schema inspector trait for read-only schema introspection