gamernetwork / yolk-contracts
Gamer Network's interface library
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Last update: 2024-04-23 01:19:29 UTC
README
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Yolk Contracts
Introduction
This package defines the interfaces and traits for the core services used
throughout the Yolk framework. e.g. yolk\contracts\database\DatabaseConnection
defines the contract for accessing a database, while the
yolk\contracts\support\collections\Dictionary contract defines methods for
operating on a collection of key/value pairs.
Each directory corresponds to a Yolk package that provides implementations of
the interfaces defined in that directory. For example, the gamernetwork/yolk-log
package contains implementions of yolk\contracts\log\Logger.
Why Contracts?
A separate contracts package provides two primary benefits:
- A quick reference point for all available contracts.
- A single, decoupled package that promotes loose-coupling by separating interfaces from implementations.
Quick Reference
Having all of the framework's services neatly defined within interfaces provides succinct documentation to available features.
Rather than tracking down which methods are available within a large, complicated class, you can refer to a simpler, cleaner interface.
Loose Coupling
Yolk packages provide default and usually basic implementations of each contract, that sometimes might not be sufficient or quite right for a particular project.
By specifying contracts, code is no longer coupled to these specific implementations and you may easily write alternatives that better suit your project.
Likewise, you can switch between implementations without modifying any consuming code. The classic example being able to switch caching backends (e.g. Memory/Redis/Memcache) without modifying any code that uses the cache.
Naming Conventions
Interfaces in this package are named in one of two ways:
- As a singular noun (e.g.
Dictionary,DatabaseConnection,Filter) - As a noun or verb suffixed with "-able" (e.g.
Arrayable,Runnable)
The implementations of those interfaces with in Yolk components are usually prefixed with "Base-", although there are some variations - in particular some implementations still use the deprecated prefix "Generic-".
Request➡BaseRequestResponse➡BaseResponseDatabaseConnection➡BaseConnectionConnectionManager➡GenericConnectionManagerProfiler➡GenericProfiler