Umber HTTP

A series of light weight abstractions around crafting HTTP responses.

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Installation

The package can be installed through composer through Packagist:

• composer require umber/http

Please anchor the version to 2.x as version 1.x is not supported anymore.

Usage

A HTTP response is represented by an implementation of HttpResponseInterface. These classes implement basic concepts of a HTTP response and can be used to compile a valid response for use OR can be converted to your framework of choice.

The following classes are at its core:

• Umber\Http\Header\HttpHeaderInterface
• Umber\Http\Response\HttResponseInterface

Basic implementations of these classes exist:

• Umber\Http\Header\HttpHeader
• Umber\Http\Response\HttpResponse
• Umber\Http\Response\Type\JsonHttpResponse

Currently the only format this package supports out of the box is json. This is not a design limitation but because the package was originally designed with an API focus. For working with json the following classes are available:

• Umber\Http\Factory\Type\JsonHttpResponseFactoryInterface
• Umber\Http\Factory\Type\JsonHttpResponseFactory
• Umber\Http\Factory\Type\JsonHttpResponseGenerator
• Umber\Http\Response\Type\JsonHttpResponse

Abstractions around the following API concepts are also implemented:

• Serialization
• Pagination

Serialization

For requests that are used in API context you may want to invoke a serializer. This package does not provide a serialization implementation but an abstraction to interact with one of your choice.

A HttpResponseInterface tailored for serialization is provided:

• Umber\Http\Serializer\Response\SerializerHttpResponse

This response requires an instance of HttpResponseSerializerInterface is provided along with any serialization groups. The data given to the response is the raw data to be serialized. When the response is used to get the body it will serialize the data at that point.

NOTE, when using JsonHttpResponseGenerator with a HttpResponseSerializerInterface provided it will automatically construct these SerializerHttpResponse classes for you.

Serialization is done just in time and therefore will not be represented as a performance hit within your controllers. This is done so that responses can be intercepted and changed without wasting compute on serializing data that is not needed.

Pagination

For requests that are used in API context you may want to invoke a paginator. This package does not provide a pagination implementation but an abstraction to interact with one of your choice.

A HttpResponseInterface should not accept a paginator as it's data. However a PaginatiorAwareHttpResponseInterface will.

Because of this the following responses are available (and should be used as example for adding other types):

• Umber\Http\Response\Type\JsonPaginatorHttpResponse

Responses that are paginator aware should make use of the PagiantorResponseHelper and follow the example of the JsonPaginatorHttpResponse. These responses will initialise 4 new headers when the paginator is invoked.

• Pagination-Results-Per-Page
• Pagination-Results-Count
• Pagination-Results-Total
• Pagination-Pages-Total

Paginator aware responses should be automatically constructed when given to the *Factory of your choice. As the *Generator will often use the *Factory this class also accepts paginator's. For example giving a paginator to the JsonHttpResponseFactory (or JsonHttpResponseGenerator) will return a JsonPaginatorHttpResponse.

Frameworks

Currently I have a bundle for Symfony that defines all the classes as services. Controllers are allowed to return instances of HttpResponseInterface and they will be transformed in to Symfony Request objects.

Simply use the following bundle:

• Umber\Http\Framewor\Symfony\UmberHttpBundle

The configuration is optional, but to define a serializer implementation use the following methods to provide link to the service you wish to use.

umber_http:
  serializer: 'service.definition.reference.here'