An Elixir library for organizing business logic into operations with parameter validation, policy checks, and chaining.
Exop is an Elixir library that provides macros to encapsulate business logic into reusable operations with built-in parameter validation and contracts. It solves the problem of scattered business logic by offering a structured way to define operations with validation, policy checks, and chaining capabilities.
Elixir developers building domain-driven applications who need a clean way to organize business logic, enforce parameter validation, and implement authorization policies.
Developers choose Exop for its declarative approach to operation definitions, comprehensive validation options, and built-in support for chaining and policies, which reduces boilerplate and improves code maintainability.
Elixir library that provides macros which allow you to encapsulate business logic and validate incoming parameters with predefined contract.
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Offers a wide array of validation checks like type, numericality, format, length, and custom functions, as detailed in the parameter checks section, reducing boilerplate code.
Integrates authorization directly into operations with custom policy modules, enabling role-based access control via the `authorize/1` function.
Provides `Exop.Chain` for composing operations into complex processes with conditional execution and parameter coercion, as shown in the operations chain section.
Includes fallback modules for error handling and callback modules for side effects, enhancing robustness and separation of concerns.
Heavy reliance on macros can obscure runtime behavior and increase compile times, making debugging more challenging for developers unfamiliar with metaprogramming.
While it has family projects like ExopData and ExopPlug, the ecosystem is smaller than alternatives like Ecto, potentially affecting community support and integrations.
Validation contracts are defined at compile time, which may not adapt well to applications needing dynamic or user-defined validation rules.