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Informations about the package pipeline
Bermuda Pipeline
Bermuda Pipeline is a lightweight and flexible implementation of the pipeline pattern for PHP applications. It provides a robust mechanism for processing HTTP requests through a chain of middleware components compliant with PSR-7 and PSR-15 standards.
Overview
Bermuda Pipeline enables you to create a processing pipeline where each middleware receives a ServerRequest, performs its specific handling, and then delegates control to the next middleware in the chain. When the middleware chain is exhausted, a fallback handler is used to generate a response.
The key benefits of using Bermuda Pipeline include:
- Immutability: Methods such as
pipe()
return a new pipeline instance with the added middleware, keeping the original pipeline unchanged. This makes it safe for use in complex, multi-threaded, or reentrant scenarios. - PSR Compliance: The implementation is based on PSR-7 and PSR-15 standards, ensuring seamless interoperability with other components in the PHP ecosystem.
- Deep Cloning: When cloning a pipeline, each middleware is deeply cloned to avoid shared mutable state, ensuring that changes to one instance do not affect others.
- Flexible Fallback Handler: A fallback handler is invoked once all middleware have been executed, ensuring that a default response is always available.
Features
- IteratorAggregate and Countable Interfaces: Easily iterate over the middleware chain and retrieve the number of middleware components.
- Immutability: The pipeline is designed to be immutable; all modifications (e.g., adding middleware) return a new instance.
- Deep Cloning: When a pipeline is cloned, every middleware is cloned as well to prevent shared state issues.
- Factory Method: The static method
createFromIterable()
simplifies the instantiation of a pipeline from a list of middleware components. - Customizable Fallback Handler: Use
withFallbackHandler()
to replace the default fallback handler without altering the original pipeline instance.
Requires
- PHP: >= 8.4
Installation
You can install Bermuda Pipeline via Composer. Run the following command in your project directory:
Usage
All versions of pipeline with dependencies
bermudaphp/config Version ^1.4
psr/http-server-middleware Version ^1.0.2
psr/http-factory Version ^1.0.1