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https://github.com/mergesort/Bodega
A simple store for all your basic needs, and a foundational data layer primitive for iOS and Mac apps. 🐱
https://github.com/mergesort/Bodega
actors cache database ios macos offline-first persistence swift
Last synced: 3 months ago
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A simple store for all your basic needs, and a foundational data layer primitive for iOS and Mac apps. 🐱
- Host: GitHub
- URL: https://github.com/mergesort/Bodega
- Owner: mergesort
- License: mit
- Created: 2022-04-05T18:17:31.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-06-19T17:58:38.000Z (5 months ago)
- Last Synced: 2024-07-19T03:50:35.508Z (4 months ago)
- Topics: actors, cache, database, ios, macos, offline-first, persistence, swift
- Language: Swift
- Homepage: https://build.ms/bodega/docs
- Size: 1.59 MB
- Stars: 305
- Watchers: 4
- Forks: 26
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
### An actor-based data layer, helping you build simple or complex stores for any iOS or Mac app. 🏪
If you find Bodega valuable I would really appreciate it if you would consider helping [sponsor my open source work](https://github.com/sponsors/mergesort), so I can continue to work on projects like Bodega to help developers like yourself.
---
As a born and raised New Yorker I can attest that [bodegas](https://en.wikipedia.org/wiki/Bodega_(store)) act as humble infrastructure for our city, and Bodega aims to do that as well. We appreciate what bodegas do for us, yet it's their simplicity and prevalence that almost makes us forget they're here.
Bodega is an actor-based library that started as a simple cache based on reading and writing files to/from disk with an incredibly simple API. Today Bodega offers a form of infrastructure that any app's data layer can use. Whether you want to store Codable objects with ease, build caches, or interface with your API or services like CloudKit, it all works in just a few lines of code.
Bodega's `StorageEngine` is at the heart of what's possible. Conforming any database, persistence layer, or even an API server, to the `StorageEngine` protocol automatically provides an incredibly simple data layer for your app thanks to Bodega's `ObjectStorage`. Rather than `Data` and databases developers interact with their app's Swift types no matter what those may be, have a unified API, and concurrency handled out of the box.
Bodega is fully usable and useful on its own, but it's also the foundation of [Boutique](https://github.com/mergesort/Boutique). You can find a demo app built atop Boutique in the [Boutique Demo folder](https://github.com/mergesort/Boutique/tree/main/Boutique%20Demo), showing you how to make an offline-ready realtime updating SwiftUI app in only a few lines of code. You can read more about the thinking behind the architecture in this blog post exploring Boutique and the [Model View Controller Store architecture](https://build.ms/2022/06/22/model-view-controller-store).
---
* [Getting Started](#getting-started)
* [StorageEngines](#storageengines)
* [ObjectStorage](#objectstorage)
* [Further Exploration](#further-exploration)
---
### Getting Started
Bodega provides two types of storage primitives for you, `StorageEngine` and `ObjectStorage`. A `StorageEngine` writes `Data` to a persistence layer, while `ObjectStorage ` works with Swift types that conform to `Codable`. A `StorageEngine` can save items to disk, SQLite, or even your own database, while `ObjectStorage` offers a unified layer over `StorageEngine`s, providing a single API for saving objects to any `StorageEngine` you choose. `Bodega` offers `DiskStorageEngine` and `SQLiteStorageEngine` by default, or you can even build a `StorageEngine` based on your app's server or a service like CloudKit if you want a simple way to interface with your API. You can even compose storage engines to create a complex data pipeline that hits your API and saves items into a database, all in one API call. The possibilities are endless!
---
### StorageEngines
```swift
// Initialize a SQLiteStorageEngine to save data to an SQLite database.
let storage = SQLiteStorageEngine(
directory: .documents(appendingPath: "Quotes")
)
// Alternatively Bodega provides a DiskStorageEngine out of the box too.
// It has the same API but uses the file system to store objects. ¹
let storage = DiskStorageEngine(
directory: .documents(appendingPath: "Quotes")
)
// CacheKeys can be generated from a String or URL.
// URLs will be reformatted into a file system safe format before writing to disk.
let url = URL(string: "https://redpanda.club/dope-quotes/dolly-parton")
let cacheKey = CacheKey(url: url)
let data = Data("Find out who you are. And do it on purpose. - Dolly Parton".utf8)
// Write data to disk
try await storage.write(data, key: cacheKey)
// Read data from disk
let readData = await storage.read(key: cacheKey)
// Remove data from disk
try await storage.remove(key: Self.testCacheKey)
```
¹ The tradeoffs of `SQLiteStorageEngine` vs. `DiskStorageEngine` are discussed in the [StorageEngine documentation](https://mergesort.github.io/Bodega/documentation/bodega/using-storageengines), but `SQLiteStorageEngine` is the suggested default because of it's far superior performance, using the same simple API.
Bodega provides two different instances of `StorageEngine` out of the box, but if you want to build your own all you have to do is conform to the `StorageEngine` protocol. This will allow you to create a `StorageEngine` for any data layer, whether you want to build a `CoreDataStorageEngine`, a `RealmStorageEngine`, a `KeychainStorageEngine`, or even a `StorageEngine` that maps to your API. If you can read, write, or delete data, you can conform to `StorageEngine`.
```swift
public protocol StorageEngine: Actor {
func write(_ data: Data, key: CacheKey) async throws
func write(_ dataAndKeys: [(key: CacheKey, data: Data)]) async throws
func read(key: CacheKey) async -> Data?
func read(keys: [CacheKey]) async -> [Data]
func readDataAndKeys(keys: [CacheKey]) async -> [(key: CacheKey, data: Data)]
func readAllData() async -> [Data]
func readAllDataAndKeys() async -> [(key: CacheKey, data: Data)]
func remove(key: CacheKey) async throws
func remove(keys: [CacheKey]) async throws
func removeAllData() async throws
func keyExists(_ key: CacheKey) async -> Bool
func keyCount() async -> Int
func allKeys() async -> [CacheKey]
func createdAt(key: CacheKey) async -> Date?
func updatedAt(key: CacheKey) async -> Date?
}
```
---
### ObjectStorage
Bodega is most commonly paired with [Boutique](https://github.com/mergesort/Boutique), but you can also use it as a standalone cache. Any `StorageEngine` can read or write `Data` from your persistence layer, but `ObjectStorage` provides the ability to work with Swift types, as long as they conform to `Codable`. `ObjectStorage` has a very similar API to `DiskStorage`, but with slightly different function names to be more explicit that you're working with objects and not `Data`.
```swift
// Initialize an ObjectStorage object
let storage = ObjectStorage(
storage: SQLiteStorageEngine(directory: . documents(appendingPath: "Quotes"))!
)
let cacheKey = CacheKey("churchill-optimisim")
let quote = Quote(
id: "winston-churchill-1",
text: "I am an optimist. It does not seem too much use being anything else.",
author: "Winston Churchill",
url: URL(string: "https://redpanda.club/dope-quotes/winston-churchill")
)
// Store an object
try await storage.store(quote, forKey: cacheKey)
// Read an object
let readObject: Quote? = await storage.object(forKey: cacheKey)
// Grab all the keys, which at this point will be one key, `cacheKey`.
let allKeys = await storage.allKeys()
// Verify by calling `keyCount`, both key-related methods are also available on `DiskStorage`.
await storage.keyCount()
// Remove an object
try await storage.removeObject(forKey: cacheKey)
```
---
### Further Exploration
Bodega is very useful as a primitive for interacting with and persisting data, but it's even more powerful when integrated into [Boutique](https://github.com/mergesort/Boutique). Boutique is a `Store` and serves as the foundation of the complementing `Model View Controller Store` (MVCS) architecture. MVCS brings together the familiarity and simplicity of the [MVC architecture](https://developer.apple.com/library/archive/documentation/General/Conceptual/DevPedia-CocoaCore/MVC.html) you know and love with the power of a `Store`, to give your app a simple but well-defined state management and data architecture.
If you'd like to learn more about how it works you can read about the philosophy in a [blog post](https://build.ms/2022/06/22/model-view-controller-store) where I explore MVCS for SwiftUI, and you can find a reference implementation of an offline-ready realtime updating MVCS app powered by Boutique in this [repo](https://github.com/mergesort/MVCS).
---
### Feedback
This project provides multiple forms of delivering feedback to maintainers.
- If you have a question about Bodega, we ask that you first consult the [documentation](https://build.ms/bodega/docs) to see if your question has been answered there.
- If you still have a question, enhancement, or a way to improve Bodega, this project leverages GitHub's [Discussions](https://github.com/mergesort/Bodega/discussions) feature.
- If you find a bug and wish to report an [issue](https://github.com/mergesort/Bodega/issues) would be appreciated.
---
### Requirements
- iOS 13.0+
- macOS 11.0
- Xcode 13.2+
### Installation
#### Swift Package Manager
The [Swift Package Manager](https://www.swift.org/package-manager) is a tool for automating the distribution of Swift code and is integrated into the Swift build system.
Once you have your Swift package set up, adding Bodega as a dependency is as easy as adding it to the dependencies value of your `Package.swift`.
```swift
dependencies: [
.package(url: "https://github.com/mergesort/Bodega.git", .upToNextMajor(from: "1.0.0"))
]
```
#### Manually
If you prefer not to use SPM, you can integrate Bodega into your project manually by copying the files in.
---
### About me
Hi, I'm [Joe](http://fabisevi.ch) everywhere on the web, but especially on [Mastodon](https://macaw.social/@mergesort).
### License
See the [license](LICENSE) for more information about how you can use Bodega.
### Sponsorship
Bodega is a labor of love to help developers build better apps, making it easier for you to unlock your creativity and make something amazing for your yourself and your users. If you find Bodega valuable I would really appreciate it if you'd consider helping [sponsor my open source work](https://github.com/sponsors/mergesort), so I can continue to work on projects like Bodega to help developers like yourself.
---
**Now that you're up to speed, *let's take this offline*** 📭