209 lines
7.0 KiB
Markdown
209 lines
7.0 KiB
Markdown
# | aicra |
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[](https://golang.org/doc/go1.10)
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[](https://opensource.org/licenses/MIT)
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[](https://goreportcard.com/report/git.xdrm.io/go/aicra)
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[](https://godoc.org/git.xdrm.io/go/aicra)
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**Aicra** is a self-working framework coded in *Go* that allows anyone to create a fully featured REST API. It features type checking, authentication management through middlewares, file upload, rich argument parsing (*i.e. url slash-separated, urlencoded, form-data, json*), nested routes, project builder (*i.e. aicra*), etc.
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This framework is based over some of the following concepts.
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| concept | explanation |
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| meaningful defaults | Defaults and default values work without further understanding |
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| config driven | Avoid information duplication. Automate anything that can be without losing control. Have *one* configuration that summarizes the whole project, its behavior and its automation flow. |
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> A working example is available [here](https://git.xdrm.io/example/aicra)
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#### Table of contents
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[TOC]
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#### I. Installation
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You need a recent machine with `go` installed.
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> This package has not been tested under the version **1.10**.
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##### 1. Download and install the package
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```bash
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go get -u git.xdrm.io/go/aicra
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```
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It should now be available locally and available for your imports.
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##### 2. Compile the command-line builder
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You should then compile the project builder to help you manage your projects.
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```bash
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go install git.xdrm.io/go/aicra/cmd/aicra
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```
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> The executable `aicra` will be placed into your `$GOPATH/bin` folder, if added to your environment PATH it should be available as a standalone command in your terminal. If not, you can simply run `$GOPATH/bin/aicra` to use the command or create a symlink into `/usr/local/bin` or the PATH folder of your choice for less characters to type.
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#### II. Setup a project
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The default project structure for **aicra** is as follows :
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```
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├── main.go - the entry point
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├── manifest.json - the configuration file
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├── middleware - middleware implementations
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├── controller - controller implementations
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└── types - custom type for the type checker
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```
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In order for your project to be run, each controller, middleware and type checker has to be compiled as a *plugin* (*i.e. shared objects*). They can then be loaded by the server.
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##### 1. Configuration
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The whole project behavior is described inside the `manifest.json` file. For a better understanding of the format, take a look at this working [template](https://git.xdrm.io/example/aicra/src/master/manifest.json). This file contains information about :
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- resources routes and their methods
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- every input for each method (called *argument*)
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- every output for each method
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- scope permissions
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- input policy : type, required/optional, default value, variable renaming, etc.
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##### 2. Controllers
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For each route, you'll have to place your implementation into the `controller` folder following the naming convention : add `/i.go` at the end of the route.
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> Example - `/path/to/some/uri` will be inside `controller/path/to/some/uri/i.go`.
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A fully working example is available [here](https://git.xdrm.io/example/aicra).
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##### 3. Middlewares
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In order for your project to manage authentication, the best solution is to create middlewares, there are programs that updates a *Scope* according to internal or persistent (*i.e.* database) information and the actual http request. They are all run before each request it routed by aicra. The scope are used to match the `scope` field in the configuration file and automatically block non-authed requests. Scopes can also be used for implementation-specific behavior.
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Each middleware must be directly inside the `middleware` folder.
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> Example - the `1-authentication` middleware will be inside `middleware/1-authentication/main.go`.
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**Note** - middleware execution will be ordered by name. Prefixing your middlewares with their order is a good practice.
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##### 4. Custom types
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In your configuration you will have to use built-in types (*e.g.* int, any, varchar), but if you want project-specific ones, you can add your own types inside the `type` folder. You can check what structure to follow by looking at the [built-in types](https://git.xdrm.io/go/aicra/src/master/internal/checker/default).
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Each type must be inside a unique package directly inside the `type` folder. The package name is arbitrary and does not have to match the name (but it is better if it is explicit), because the `Match()` method already matches the name.
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#### III. Build your project
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After each controller, middleware or type edition, you'll have to rebuild the project. This can be achieved through the command-line builder.
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Usage is `aicra [options] /path/to/your/project`.
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Options:
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- `-c` - overrides the default controllers path ; default is `./controller`
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- `-m` - overrides the default middlewares path ; default is `./middleware`
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- `-t` - overrides the default custom types path ; default is `./custom-types`
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For a project that does not need a different structure, you just have to run this command under your project root
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```bash
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aicra .
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```
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The output should look like
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.
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#### IV. Main
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The main default program is pretty small as below :
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```go
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package main
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import (
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"git.xdrm.io/go/aicra"
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"net/http"
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)
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func main() {
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// 1. create server
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server, err := aicra.New("manifest.json")
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if err != nil {
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panic(err)
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}
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// 2. listen to incoming http requests
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err = http.ListenAndServe("127.0.0.1:4242", server)
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if err != nil {
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panic(err)
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}
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}
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```
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#### V. Change Log
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- [x] human-readable json configuration
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- [x] nested routes (*i.e. `/user/:id:` and `/user/post/:id:`*)
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- [ ] nested URL arguments (*i.e. `/user/:id:` and `/user/:id:/post/:id:`*)
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- [x] useful http methods: GET, POST, PUT, DELETE
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- [x] manage URL, query and body arguments:
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- [x] multipart/form-data (variables and file uploads)
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- [x] application/x-www-form-urlencoded
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- [x] application/json
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- [x] required vs. optional parameters with a default value
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- [x] parameter renaming
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- [ ] generic authentication system (*i.e. you can override the built-in one*)
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- [x] generic type check (*i.e. implement custom types alongside built-in ones*)
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- [ ] built-in types
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- [x] `any` - wildcard matching all values
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- [x] `int` - any number (*e.g. float, int, uint*)
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- [x] `string` - any text
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- [x] `varchar(min, max)` - any string with a length between `min` and `max`
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- [ ] `<a>` - array containing **only** elements matching `a` type
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- [ ] `<a:b>` - map containing **only** keys of type `a` and values of type `b` (*a or b can be ommited*)
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- [x] generic controllers implementation (shared objects)
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- [x] response interface
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- [ ] devmode watcher : watch manifest, watch plugins to compile + hot reload them |