Merge branch '0.2.0' of go/aicra into master

Log aicra configuration 'METHOD /PATH' when creating the instance
Log mapped handlers before starting listening

To know when we start listening (was transparently handled by http.ListenAndServer) ; added a wrapper around 'Server' (i.e. httpServer) that fulfills the http.Server interface

.drone.yml

@@ -0,0 +1,11 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: test
+  image: golang:1.13
+  commands:
+  - go get ./...
+  - go test -v -race -cover -coverprofile ./coverage.out ./...

README.md

@@ -4,149 +4,99 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Go Report Card](https://goreportcard.com/badge/git.xdrm.io/go/aicra)](https://goreportcard.com/report/git.xdrm.io/go/aicra)
 [![Go doc](https://godoc.org/git.xdrm.io/go/aicra?status.svg)](https://godoc.org/git.xdrm.io/go/aicra)
-[![Build Status](https://ci.migration.xdrm.io/buildStatus/icon?job=aicra%2F0.2.0)](.)
+[![Build Status](https://drone.xdrm.io/api/badges/go/aicra/status.svg)](https://drone.xdrm.io/go/aicra)
 
 
-**Aicra** is a *configuration-driven* REST **API engine**  in *Go* that allows you to create a fully featured API.
+**Aicra** is a *configuration-driven* **web framework** written in Go that allows you to create a fully featured REST API.
 
-The whole API management is done for you from a configuration file describing your API, you just need to implement :
+The whole management is done for you from a configuration file describing your API, you're left with implementing :
+- controllers
+- optionnally middle-wares (_e.g. authentication, csrf_)
+- and optionnally type checkers to check input parameters
 
-- the <u>controllers</u>
-- the <u>middle-wares</u> (_e.g. authentication, csrf_)
-- and optionnally the <u>type checkers</u> to check if input values follows some rules
 
-> There is 2 available drivers that will load your implementations. The `plugin` driver is for Go programmers, the `generic` one is for any language (it uses standard input and output).
+The aicra server fulfills the `net/http` [Server interface](https://golang.org/pkg/net/http/#Server).
 
 
 
-The engine has been designed with the following concepts in mind.
-
-| concept | explanation |
-|---|---|
-| meaningful defaults | Defaults and default values work without further understanding |
-| configuration  driven | Avoid information duplication. Automate anything that can be automated without losing control. Have *one* configuration that summarizes the whole API, its behavior and its automation flow. |
-
-
-> A example project  is available [here](https://git.xdrm.io/example/aicra)
+> A example project is available [here](https://git.xdrm.io/go/tiny-url-ex)
 
 
 ### Table of contents
 
 <!-- toc -->
 
-* [I. Installation](#i-installation)
-  * [1. Download and install the package](#1-download-and-install-the-package)
-* [II. Setup a project](#ii-setup-a-project)
-  * [1. Compilation configuration](#1-compilation-configuration)
-      * [Example](#example)
-  * [2. API Configuration](#2-api-configuration)
-      * [Definition](#definition)
-      * [Input Arguments](#input-arguments)
-          * [1. Input types](#1-input-types)
-          * [2. Global Format](#2-global-format)
-          * [3. Example](#3-example)
-  * [3. Controllers](#3-controllers)
-      * [1. Plugin driver](#1-plugin-driver)
-      * [2. Generic driver](#2-generic-driver)
-  * [4. Middle-wares](#4-middle-wares)
-      * [1. Plugin driver](#1-plugin-driver-1)
-      * [2. Generic driver](#2-generic-driver-1)
-  * [5. Type checkers](#5-type-checkers)
-      * [1. Plugin driver](#1-plugin-driver-2)
-      * [2. Generic driver](#2-generic-driver-2)
-* [III. Build your project](#iii-build-your-project)
-  * [IV. Main](#iv-main)
-  * [V. Change Log](#v-change-log)
+- [I/ Installation](#i-installation)
+- [II/ Development](#ii-development)
+  * [1) Main executable](#1-main-executable)
+  * [2) API Configuration](#2-api-configuration)
+      - [Definition](#definition)
+    + [Input Arguments](#input-arguments)
+      - [1. Input types](#1-input-types)
+      - [2. Global Format](#2-global-format)
+- [III/ Change Log](#iii-change-log)
 
 <!-- tocstop -->
 
-### I. Installation
+### I/ Installation
 
-You need a recent machine with `go` [installed](https://golang.org/doc/install).
+You need a recent machine with `go` [installed](https://golang.org/doc/install). This package has not been tested under the version **1.10**.
 
-> This package has not been tested under the version **1.10**.
-
-
-
-#### 1. Download and install the package
 
 ```bash
 go get -u git.xdrm.io/go/aicra/cmd/aicra
 ```
 
-The library should now be available locally as `git.xdrm.io/go/aicra` your imports. Moreover, the **project compiler** have been installed as the `aicra` command.
-
-> 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 symbolic link into `/usr/local/bin` for instance.
+The library should now be available as `git.xdrm.io/go/aicra` in your imports.
 
 
-
-### II. Setup a project
-
-The default project structure is :
-
-```bash
-├── main.go          # entry point
-|
-├── aicra.json       # server configuration file
-├── api.json         # API configuration file
-|
-├── middleware       # middleware implementations
-├── controller       # controller implementations
-└── type             # custom type checkers
-```
+### II/ Development
 
 
+#### 1) Main executable
 
-#### 1. Compilation configuration
+The main executable will declare and run the aicra server, it might look quite like the code below.
 
-The `aicra.json` configuration file defines where are located your controllers, type checkers, and middle-wares ; also it contains what driver you want to use, you have 2 choices :
+```go
+package main
+import (
+    "log"
+    "net/http"
 
-1. **plugin** - for Go implementations (_c.f. [go plugin system](https://golang.org/pkg/plugin/)_)
-2. **generic** - for any language implementation (uses standard input and output)
+    "git.xdrm.io/go/aicra"
+    "git.xdrm.io/go/aicra/typecheck/builtin"
+    "git.xdrm.io/go/aicra/api"
+)
 
+func main() {
 
-
-The file uses the [json](https://json.org/) format, each field is described in the table above.
-
-| field                  | description                                                  | example value                     |
-| ---------------------- | ------------------------------------------------------------ | --------------------------------- |
-| `root`                 | The project folder path                                      | `./some-path` or `/some/path`                     |
-| `driver`               | The driver to use for loading controllers, middlewares and type checkers | `plugin` or `generic` |
-| `types`.`default`      | Whether to load default types into the project               | `true` or `false`       |
-| `types`.`folder`       | The folder (relative to the project root) where type checkers' implementations are located | `./type` or `type`                            |
-| `controllers`.`folder` | The folder (relative to the project root) where controllers' implementations are located | `./controller` or `controller`                      |
-| `middlewares`.`folder` | The folder (relative to the project root) where middlewares' implementations are located | `./middleware` or `middleware`                      |
-
-A sample file can be found [here](https://git.xdrm.io/example/aicra/src/master/aicra.json).
-
-
-
-###### Example
-
-In this example we have the controllers inside the `controller` folder, the middle-wares in the `middleware` folder and custom type checkers inside the `checker` folder, we want to load the built-in type checkers and are using the `plugin` driver. Also our project root is the relative current path `.` ; note that it is better using an absolute path as your project root.
-
-```json
-{
-	"root": ".",
-	"driver": "plugin",
-	"types": {
-		"default": true,
-		"folder": "checker"
-	},
-	"controllers": {
-		"folder": "controller.plugin"
-	},
-	"middlewares": {
-		"folder": "middleware.plugin"
+    // 1. build server
+    server, err := aicra.New("path/to/your/api/definition.json");
+    if err != nil {
+        log.Fatalf("Cannot build the aicra server: %v\n", err)
     }
+
+    // 2. add type checkers
+    server.Checkers.Add( builtin.NewAny() );
+    server.Checkers.Add( builtin.NewString() );
+    server.Checkers.Add( builtin.NewFloat64() );
+
+    // 3. bind your implementations
+    server.HandleFunc(http.MethodGet, func(req api.Request, res *api.Response){
+        // ... process stuff ...
+        res.SetError(api.ErrorSuccess());
+    })
+
+    // 4. launch server
+    log.Fatal( http.ListenAndServer("localhost:8181", server) )
 }
 ```
 
 
 
-#### 2. API Configuration
+#### 2) API Configuration
 
-The whole project behavior is described inside the `api.json` file. For a better understanding of the format, take a look at this working [template](https://git.xdrm.io/example/aicra/src/master/api.json). This file defines :
+The whole project behavior is described inside a json file (_e.g. usually api.json_) file. For a better understanding of the format, take a look at this working [template](https://git.xdrm.io/go/tiny-url-ex/src/master/api.json). This file defines :
 
 - resource routes and their methods
 - every input for each method (called *argument*)
@@ -182,11 +132,8 @@ For each method you will have to create fields described in the table above.
 | `out`      | The list of output data that will be returned by your controllers. It has the same syntax as the `in` field but is only use for readability purpose and documentation. |                                                              |
 
 
-
 ##### Input Arguments
 
-
-
 ###### 1. Input types
 
 Input arguments defines what data from the HTTP request the method needs. Aicra is able to extract 3 types of data :
@@ -239,248 +186,7 @@ In this example we want 3 arguments :
 
 
 
-###### 3. Example
-
-In this example you can see a pretty basic user/article REST API definition. The API let's you fetch, create, edit, and delete users and do the same for their articles. Users actions will be available at the uri `/user`, and `/article` for articles.
-
-
-
-#### 3. Controllers
-
-Controllers implement `Get`, `Post`, `Put`, and `Delete` methods, and have access to special variables injected in the argument list :
-
-- `_HTTP_METHOD_` the request's HTTP method in uppercase
-- `_SCOPE_` the scope filled by middle-wares
-- `_AUTHORIZATION_` the request's **Authorization** header
-
-
-
-Also special variables found in the return data are processed with special actions :
-
-- `_REDIRECT_` will redirect to the URL contained in the variable
-
-
-
-##### 1. Plugin driver
-
-For each route, you'll have to place your implementation into the `controller` folder  (according to the *aicra.json* configuration)  following the naming convention : add `/main.go` at the end of the route.
-
-> <u>Example</u> - the URI `/path/to/some/uri` is handled by the file `controller/path/to/some/uri/main.go`
->
-> <u>Exception</u> - the URI `/` is handled by the file `controller/ROOT/main.go`
-
-A sample directory structure is available [here](https://git.xdrm.io/example/aicra/src/master/controller.plugin).
-
-
-
-Each controller must implement the [driver.Controller](https://godoc.org/git.xdrm.io/go/aicra/driver#Controller) interface. In addition you must declare the function `func Export() Controller` to allow dynamic loading of your controller.
-
-**Example**
-
-Here is a base code for any controllers
-
-```go
-package main
-import (
-	"git.xdrm.io/go/aicra/driver"
-	"git.xdrm.io/go/aicra/api"
-	e "git.xdrm.io/go/aicra/err"
-)
-
-// Mockup controller implementation
-type MyController interface{}
-func Export() driver.Controller { return new(MyController) }
-
-// GET method management
-func (c MyController) Get(args api.Arguments) api.Response {
-    res := api.NewResponse()
-   	res.Err = e.Success
-    return *res
-}
-
-// POST method management
-func (c MyController) Post(args api.Arguments) api.Response { /*...*/ }
-
-// PUT method management
-func (c MyController) Put(args api.Arguments) api.Response { /*...*/ }
-
-// DELETE method management
-func (c MyController) Delete(args api.Arguments) api.Response { /*...*/ }
-```
-
-
-
-##### 2. Generic driver
-
-This is the same as with the plugin driver but without `/main.go` at the end.
-
-> <u>Example</u> - The URI `/path/to/some/uri` will be handled by the executable `controller/path/to/some/uri`.
-
-> <u>Exception</u> - The URI `/` will be handled by the executable `controller/ROOT`.
-
-A sample directory structure is available [here](https://git.xdrm.io/example/aicra/src/master/controller.generic).
-
-
-
-The programs will be given useful data (*i.e. method and arguments*) through its input arguments :
-
-| Argument index | Description                                                  | Examble value                                                |
-| -------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| 1              | Uppercase HTTP method.<br>(_e.g. **$1** in bash, **argv[1]** in php_) | `GET`, `POST`, ...                                           |
-| 2              | JSON representation of the input arguments.<br>(_e.g. **$2** in bash, **argv[2]** in php_) | `{`<br>   `"_SCOPE_": ["admin", "token"],`<br>   `"somstring": "string",`<br>   `"someint": 12`<br>`}` |
-
-The standard output you will give back must be a key-value JSON representation of all the output variables.
-
-
-
-#### 4. Middle-wares
-
-In order for your project to manage authentication, the best solution is to use middle-wares, there are programs that updates a *Scope* (*i.e. a list of strings*) according to internal or persistent (*i.e.* database) information and the actual http request. They are all run before each request is forwarded to your controller. The Scopes are used to match the `scope` field in the configuration file and automatically block access to non-authenticated method calls. Scopes can also be used for implementation-specific behavior such as _CSRF_ management. Controllers have access to the scope through the variable `_SCOPE_`.
-
-
-
-##### 1. Plugin driver
-
-Each middleware must be **directly** inside the `middleware` folder (according to the _aicra.json_ configuration).
-
-> Example - the `1-authentication` middleware will be inside `middleware/1-authentication/main.go`.
-
-**Note** - middle-ware execution will be ordered by name. Prefixing your middle-wares with their order is a good practice.
-
-A sample directory structure is available [here](https://git.xdrm.io/example/aicra/src/master/middleware.plugin).
-
-
-
-Each middle-ware must implement the [driver.Middleware](https://godoc.org/git.xdrm.io/go/aicra/driver#Middleware) interface. In addition you must declare the function `func Export() Middleware` to allow dynamic loading of your middle-ware.
-
-**Example**
-
-Here is a base code for any middle-ware
-
-```go
-package main
-import (
-	"git.xdrm.io/go/aicra/driver"
-    "net/http"
-)
-
-// Mockup middle-ware implementation
-type MyMiddleware interface{}
-func Export() driver.Middleware { return new(MyMiddleware) }
-
-func (c MyMiddleware) Inspect(req http.Request, scope *[]string) {
-    // add scope according to request
-    if req.Header.Get("SomeHeader") {
-        *scope = append(*scope, "some-scope")
-    }
-}
-```
-
-
-
-##### 2. Generic driver
-
-This is the same as with the plugin driver but instead of without `/main.go` at the end.
-
-> Example - the `1-authentication` middle-ware will be inside `middleware/1-authentication` where **1-authentication** is an executable
-
-A sample directory structure is available [here](https://git.xdrm.io/example/aicra/src/master/middleware.generic).
-
-The programs will be given useful data (*i.e. method and arguments*) through its input arguments :
-
-| Argument index | Description                                                  | Examble value |
-| -------------- | ------------------------------------------------------------ | ------------- |
-| 1              | JSON representation of the input arguments.<br>(_e.g. **$1** in bash, **argv[1]** in php_) | ???           |
-
-The standard output you will give back must be a JSON array containing the scope you want to add.
-
-
-
-#### 5. Type checkers
-
-In your configuration you can use built-in types (*e.g.* int, any, varchar, token, float, ...), 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). Also it is not required that you use built-in types, you can ignore them by setting `types.default = false` in the _aicra.json_ configuration.
-
-Each type must be **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 does that.
-
-##### 1. Plugin driver
-
-Each type checker must be **directly** inside the `type` folder (according to the _aicra.json_ configuration).
-
-> Example - the `number` type checker will be inside `type/number/main.go`.
-
-A sample directory structure is available [here](https://git.xdrm.io/example/aicra/src/master/type.plugin).
-
-
-
-##### 2. Generic driver
-
-This is the same as with the plugin driver but instead of without `/main.go` at the end.
-
-> Example - the `number` type checker will be inside `type/number` where **number** is an executable
-
-A sample directory structure is available [here](https://git.xdrm.io/example/aicra/src/master/type.generic).
-
-
-
-The programs will be given useful data (*i.e. method and arguments*) through its input arguments :
-
-| Argument index | Description                                                  | Examble value      |
-| -------------- | ------------------------------------------------------------ | ------------------ |
-| 1              | Uppercase method.<br>(_e.g. **$1** in bash, **argv[1]** in php_) | `MATCH` or `CHECK` |
-| 2              | JSON representation of the input arguments.<br>(_e.g. **$2** in bash, **argv[2]** in php_) | ???                |
-
-The standard output you will give back must be a `1` or `0` representing `true` and `false`.
-
-+ When calling the `MATCH` method, the input argument consists of a string being the type checker name, you must return `1` this name is handled by the current type checker.
-+ When calling the `CHECK` method, the input argument consists of a JSON representation wrapped inside the key `value`. For instance it could be `{"value": [1,2,3]}` if the input value is an array containing 1, 2, and 3.
-
-
-
-### III. Build your project
-
-After each controller, middle-ware or type checker implementation, you'll have to compile the project. This can be achieved through the command-line builder.
-
-Usage is `aicra /path/to/your/project`.
-
-Usually you just have to run the following command inside your project directory :
-
-```bash
-aicra .
-```
-
-The output should look like
-
- ![that](./README.assets/1531039386654.png).
-
-#### IV. Main
-
-The main default program is pretty small as shown below :
-
-```go
-package main
-
-import (
-	"git.xdrm.io/go/aicra"
-	"net/http"
-)
-
-func main() {
-
-    // build from config
-	server, err := aicra.New("api.json")
-	if err != nil { panic(err) }
-
-    // launch server
-	err = http.ListenAndServe("127.0.0.1:4242", server)
-	if err != nil { panic(err) }
-
-}
-```
-
-
-
-
-#### V. Change Log
+### III/ Change Log
 
 - [x] human-readable json configuration
 - [x] nested routes (*i.e. `/user/:id:` and `/user/post/:id:`*)
@@ -492,26 +198,18 @@ func main() {
   - [x] application/json
 - [x] required vs. optional parameters with a default value
 - [x] parameter renaming
-- [ ] ~~generic authentication system (*i.e. you can override the built-in one*)~~ Replaced by the middle-ware system
 - [x] generic type check (*i.e. implement custom types alongside built-in ones*)
 - [ ] built-in types
   - [x] `any` - wildcard matching all values
-  - [x] `int` - any number (*e.g. float, int, uint*)
+  - [x] `int` - see go types
+  - [x] `uint` - see go types
+  - [x] `float` - see go types
   - [x] `string` - any text
-  - [x] `varchar(min, max)` - any string with a length between `min` and `max`
-  - [ ] `<a>` - array containing **only** elements matching `a` type
-  - [ ] `<a:b>` - map containing **only** keys of type `a` and values of type `b` (*a or b can be ommited*)
+  - [x] `string(min, max)` - any string with a length between `min` and `max`
+  - [ ] `[a]` - array containing **only** elements matching `a` type
+  - [ ] `[a:b]` - map containing **only** keys of type `a` and values of type `b` (*a or b can be ommited*)
 - [x] generic controllers implementation (shared objects)
 - [x] response interface
-- [ ] ~~devmode watcher~~ : watch manifest, watch plugins to compile + hot reload them
-- [x] driver for Go plugins
-  - [x] controllers
-  - [x] middlewares
-  - [x] type checkers
-- [x] driver working with any executable through standard input and output
-  - [x] controllers
-  - [x] middlewares
-  - [x] type checkers
-- [x] project configuration file to select **driver**, source folders and whether to load default type checkers.
-  - [x] used to compile the project by the `aicra` command
-  - [x] used to create an API from `aicra.New()`
+- [ ] log bound resources when building the aicra server
+- [ ] fail on check for unimplemented resources at server boot.
+- [ ] fail on check for unavailable types in api.json at server boot.

build/Jenkinsfile

@@ -1,21 +0,0 @@
-pipeline{
-	agent {
-		docker {
-			image 'golang:alpine'
-		}
-	}
-	stages {
-		stage('Test'){
-			environment {
-				GO111MODULE = 'on'
-				GOCACHE = '/tmp/.cache'
-				CGO_ENABLED = 0
-			}
-			steps {
-				sh 'go version'
-				sh 'go get -v ./...'
-				sh 'go test -cover -parallel 10 -v ./... -coverprofile=coverage.out'
-			}
-		}
-	}
-}

http.go

@@ -0,0 +1,112 @@
+package aicra
+
+import (
+	"log"
+	"net/http"
+	"strings"
+
+	"git.xdrm.io/go/aicra/api"
+	"git.xdrm.io/go/aicra/internal/reqdata"
+)
+
+// httpServer wraps the aicra server to allow handling http requests
+type httpServer Server
+
+// ServeHTTP implements http.Handler and has to be called on each request
+func (s httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	defer r.Body.Close()
+
+	// 1. build API request from HTTP request
+	request, err := api.NewRequest(r)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// 2. find a matching service for this path in the config
+	serviceDef, pathIndex := s.services.Browse(request.URI)
+	if serviceDef == nil {
+		return
+	}
+	servicePath := strings.Join(request.URI[:pathIndex], "/")
+	if !strings.HasPrefix(servicePath, "/") {
+		servicePath = "/" + servicePath
+	}
+
+	// 3. check if matching methodDef exists in config */
+	var methodDef = serviceDef.Method(r.Method)
+	if methodDef == nil {
+		response := api.NewResponse(api.ErrorUnknownMethod())
+		response.ServeHTTP(w, r)
+		logError(response)
+		return
+	}
+
+	// 4. parse every input data from the request
+	store := reqdata.New(request.URI[pathIndex:], r)
+
+	/* (4) Check parameters
+	---------------------------------------------------------*/
+	parameters, paramError := s.extractParameters(store, methodDef.Parameters)
+
+	// Fail if argument check failed
+	if paramError.Code != api.ErrorSuccess().Code {
+		response := api.NewResponse(paramError)
+		response.ServeHTTP(w, r)
+		logError(response)
+		return
+	}
+
+	request.Param = parameters
+
+	/* (5) Search a matching handler
+	---------------------------------------------------------*/
+	var serviceHandler *api.Handler
+	var serviceFound bool
+
+	for _, handler := range s.handlers {
+		if handler.GetPath() == servicePath {
+			serviceFound = true
+			if handler.GetMethod() == r.Method {
+				serviceHandler = handler
+			}
+		}
+	}
+
+	// fail if found no handler
+	if serviceHandler == nil {
+		if serviceFound {
+			response := api.NewResponse()
+			response.SetError(api.ErrorUncallableMethod(), servicePath, r.Method)
+			response.ServeHTTP(w, r)
+			logError(response)
+			return
+		}
+
+		response := api.NewResponse()
+		response.SetError(api.ErrorUncallableService(), servicePath)
+		response.ServeHTTP(w, r)
+		logError(response)
+		return
+	}
+
+	/* (6) Execute handler and return response
+	---------------------------------------------------------*/
+	// 1. feed request with configuration scope
+	request.Scope = methodDef.Scope
+
+	// 1. execute
+	response := api.NewResponse()
+	serviceHandler.Handle(*request, response)
+
+	// 2. apply headers
+	for key, values := range response.Headers {
+		for _, value := range values {
+			w.Header().Add(key, value)
+		}
+	}
+
+	// 3. write to response
+	response.ServeHTTP(w, r)
+	return
+
+}

server.go

@@ -3,14 +3,11 @@ package aicra
 import (
 	"io"
 	"log"
-	"net/http"
 	"os"
-	"strings"
 
 	"git.xdrm.io/go/aicra/api"
 
 	"git.xdrm.io/go/aicra/internal/config"
-	"git.xdrm.io/go/aicra/internal/reqdata"
 	checker "git.xdrm.io/go/aicra/typecheck"
 )
 
@@ -48,109 +45,14 @@ func New(configPath string) (*Server, error) {
 		return nil, err
 	}
 
+	// 4. log configuration services
+	log.Printf("=== Aicra configuration ===\n")
+	logService(*i.services, "")
+
 	return i, nil
 
 }
 
-// ServeHTTP implements http.Handler and has to be called on each request
-func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	defer r.Body.Close()
-
-	// 1. build API request from HTTP request
-	request, err := api.NewRequest(r)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// 2. find a matching service for this path in the config
-	serviceDef, pathIndex := s.services.Browse(request.URI)
-	if serviceDef == nil {
-		return
-	}
-	servicePath := strings.Join(request.URI[:pathIndex], "/")
-	if !strings.HasPrefix(servicePath, "/") {
-		servicePath = "/" + servicePath
-	}
-
-	// 3. check if matching methodDef exists in config */
-	var methodDef = serviceDef.Method(r.Method)
-	if methodDef == nil {
-		response := api.NewResponse(api.ErrorUnknownMethod())
-		response.ServeHTTP(w, r)
-		logError(response)
-		return
-	}
-
-	// 4. parse every input data from the request
-	store := reqdata.New(request.URI[pathIndex:], r)
-
-	/* (4) Check parameters
-	---------------------------------------------------------*/
-	parameters, paramError := s.extractParameters(store, methodDef.Parameters)
-
-	// Fail if argument check failed
-	if paramError.Code != api.ErrorSuccess().Code {
-		response := api.NewResponse(paramError)
-		response.ServeHTTP(w, r)
-		logError(response)
-		return
-	}
-
-	request.Param = parameters
-
-	/* (5) Search a matching handler
-	---------------------------------------------------------*/
-	var serviceHandler *api.Handler
-	var serviceFound bool
-
-	for _, handler := range s.handlers {
-		if handler.GetPath() == servicePath {
-			serviceFound = true
-			if handler.GetMethod() == r.Method {
-				serviceHandler = handler
-			}
-		}
-	}
-
-	// fail if found no handler
-	if serviceHandler == nil {
-		if serviceFound {
-			response := api.NewResponse()
-			response.SetError(api.ErrorUncallableMethod(), servicePath, r.Method)
-			response.ServeHTTP(w, r)
-			logError(response)
-			return
-		}
-
-		response := api.NewResponse()
-		response.SetError(api.ErrorUncallableService(), servicePath)
-		response.ServeHTTP(w, r)
-		logError(response)
-		return
-	}
-
-	/* (6) Execute handler and return response
-	---------------------------------------------------------*/
-	// 1. feed request with configuration scope
-	request.Scope = methodDef.Scope
-
-	// 1. execute
-	response := api.NewResponse()
-	serviceHandler.Handle(*request, response)
-
-	// 2. apply headers
-	for key, values := range response.Headers {
-		for _, value := range values {
-			w.Header().Add(key, value)
-		}
-	}
-
-	// 3. write to response
-	response.ServeHTTP(w, r)
-	return
-
-}
-
 // HandleFunc sets a new handler for an HTTP method to a path
 func (s *Server) HandleFunc(httpMethod, path string, handlerFunc api.HandlerFunc) {
 	handler := api.NewHandler(httpMethod, path, handlerFunc)
@@ -161,3 +63,16 @@ func (s *Server) HandleFunc(httpMethod, path string, handlerFunc api.HandlerFunc
 func (s *Server) Handle(handler *api.Handler) {
 	s.handlers = append(s.handlers, handler)
 }
+
+// HTTP converts the server to a http server
+func (s Server) HTTP() httpServer {
+
+	// 1. log available handlers
+	log.Printf("=== Mapped handlers ===\n")
+	for i := 0; i < len(s.handlers); i++ {
+		log.Printf("* [rest] %s\t'%s'\n", s.handlers[i].GetMethod(), s.handlers[i].GetPath())
+	}
+
+	// 2. cast to http server
+	return httpServer(s)
+}

typecheck/builtin/bool.go

@@ -17,7 +17,28 @@ func (Bool) Checker(typeName string) typecheck.CheckerFunc {
 		return nil
 	}
 	return func(value interface{}) bool {
-		_, isBool := value.(bool)
+		_, isBool := readBool(value)
 		return isBool
 	}
 }
+
+// readBool tries to read a serialized boolean and returns whether it succeeded.
+func readBool(value interface{}) (bool, bool) {
+	switch cast := value.(type) {
+	case bool:
+		return cast, true
+
+	case string:
+		strVal := string(cast)
+		return strVal == "true", strVal == "true" || strVal == "false"
+
+	case []byte:
+		strVal := string(cast)
+		return strVal == "true", strVal == "true" || strVal == "false"
+
+	default:
+		return false, false
+	}
+
+	return false, false
+}

typecheck/builtin/bool_test.go

@@ -0,0 +1,115 @@
+package builtin_test
+
+import (
+	"fmt"
+	"testing"
+
+	"git.xdrm.io/go/aicra/typecheck/builtin"
+)
+
+func TestBool_New(t *testing.T) {
+	t.Parallel()
+
+	inst := interface{}(builtin.NewBool())
+
+	switch cast := inst.(type) {
+	case *builtin.Bool:
+		return
+	default:
+		t.Errorf("expect %T ; got %T", &builtin.Bool{}, cast)
+	}
+}
+
+func TestBool_AvailableTypes(t *testing.T) {
+	t.Parallel()
+
+	inst := builtin.NewBool()
+
+	tests := []struct {
+		Type    string
+		Handled bool
+	}{
+		{"bool", true},
+		{"Bool", false},
+		{"boolean", false},
+		{" bool", false},
+		{"bool ", false},
+		{" bool ", false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.Type, func(t *testing.T) {
+			checker := inst.Checker(test.Type)
+			if checker == nil {
+				if test.Handled {
+					t.Errorf("expect %q to be handled", test.Type)
+					t.Fail()
+				}
+				return
+			}
+
+			if !test.Handled {
+				t.Errorf("expect %q NOT to be handled", test.Type)
+				t.Fail()
+			}
+		})
+	}
+
+}
+
+func TestBool_Values(t *testing.T) {
+	t.Parallel()
+
+	const typeName = "bool"
+
+	checker := builtin.NewBool().Checker(typeName)
+	if checker == nil {
+		t.Errorf("expect %q to be handled", typeName)
+		t.Fail()
+	}
+
+	tests := []struct {
+		Value interface{}
+		Valid bool
+	}{
+		{true, true},
+		{false, true},
+		{1, false},
+		{0, false},
+		{-1, false},
+
+		// json number
+		{"-1", false},
+		{"0", false},
+		{"1", false},
+
+		// json string
+		{"true", true},
+		{"false", true},
+		{[]byte("true"), true},
+		{[]byte("false"), true},
+
+		{"string", false},
+		{[]byte("bytes"), false},
+		{-0.1, false},
+		{0.1, false},
+		{nil, false},
+	}
+
+	for i, test := range tests {
+		t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
+			if checker(test.Value) {
+				if !test.Valid {
+					t.Errorf("expect value to be invalid")
+					t.Fail()
+				}
+				return
+			}
+			if test.Valid {
+				t.Errorf("expect value to be valid")
+				t.Fail()
+			}
+		})
+	}
+
+}

typecheck/builtin/float64.go

@@ -45,6 +45,11 @@ func readFloat(value interface{}) (float64, bool) {
 		floatVal, err := num.Float64()
 		return floatVal, err == nil
 
+	case []byte:
+		num := json.Number(cast)
+		floatVal, err := num.Float64()
+		return floatVal, err == nil
+
 		// unknown type
 	default:
 		return 0, false

typecheck/builtin/float64_test.go

@@ -0,0 +1,127 @@
+package builtin_test
+
+import (
+	"fmt"
+	"math"
+	"testing"
+
+	"git.xdrm.io/go/aicra/typecheck/builtin"
+)
+
+func TestFloat64_New(t *testing.T) {
+	t.Parallel()
+
+	inst := interface{}(builtin.NewFloat64())
+
+	switch cast := inst.(type) {
+	case *builtin.Float64:
+		return
+	default:
+		t.Errorf("expect %T ; got %T", &builtin.Float64{}, cast)
+	}
+}
+
+func TestFloat64_AvailableTypes(t *testing.T) {
+	t.Parallel()
+
+	inst := builtin.NewFloat64()
+
+	tests := []struct {
+		Type    string
+		Handled bool
+	}{
+		{"float", true},
+		{"float64", true},
+		{"Float", false},
+		{"Float64", false},
+		{"FLOAT", false},
+		{"FLOAT64", false},
+		{" float", false},
+		{"float ", false},
+		{" float ", false},
+		{" float64", false},
+		{"float64 ", false},
+		{" float64 ", false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.Type, func(t *testing.T) {
+			checker := inst.Checker(test.Type)
+			if checker == nil {
+				if test.Handled {
+					t.Errorf("expect %q to be handled", test.Type)
+					t.Fail()
+				}
+				return
+			}
+
+			if !test.Handled {
+				t.Errorf("expect %q NOT to be handled", test.Type)
+				t.Fail()
+			}
+		})
+	}
+
+}
+
+func TestFloat64_Values(t *testing.T) {
+	t.Parallel()
+
+	const typeName = "float"
+
+	checker := builtin.NewFloat64().Checker(typeName)
+	if checker == nil {
+		t.Errorf("expect %q to be handled", typeName)
+		t.Fail()
+	}
+
+	tests := []struct {
+		Value interface{}
+		Valid bool
+	}{
+		{uint(0), true},
+		{uint(math.MaxInt64), true},
+		{uint(math.MaxUint64), true},
+		{-1, true},
+		{-math.MaxInt64, true},
+
+		{float64(math.MinInt64), true},
+		{float64(0), true},
+		{float64(math.MaxInt64), true},
+		// we cannot just compare because of how precision works
+		{float64(math.MaxUint64 - 1024), true},
+		{float64(math.MaxUint64 + 1), true},
+
+		// json number
+		{fmt.Sprintf("%f", -math.MaxFloat64), true},
+		{"-1", true},
+		{"0", true},
+		{"1", true},
+		{fmt.Sprintf("%d", math.MaxInt64), true},
+		{fmt.Sprintf("%d", uint(math.MaxUint64)), true},
+		{fmt.Sprintf("%f", float64(math.MaxFloat64)), true},
+
+		{"string", false},
+		{[]byte("bytes"), false},
+		{-0.1, true},
+		{0.1, true},
+		{nil, false},
+	}
+
+	for i, test := range tests {
+		t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
+			if checker(test.Value) {
+				if !test.Valid {
+					t.Errorf("expect value to be invalid")
+					t.Fail()
+				}
+				return
+			}
+			if test.Valid {
+				t.Errorf("expect value to be valid")
+				t.Fail()
+			}
+		})
+	}
+
+}

typecheck/builtin/int.go

@@ -49,6 +49,12 @@ func readInt(value interface{}) (int, bool) {
 		num := json.Number(cast)
 		intVal, err := num.Int64()
 		return int(intVal), err == nil
+		// serialized string -> try to convert to float
+
+	case []byte:
+		num := json.Number(cast)
+		intVal, err := num.Int64()
+		return int(intVal), err == nil
 
 		// unknown type
 	default:

typecheck/builtin/string.go

@@ -61,6 +61,12 @@ func (s String) Checker(typeName string) typecheck.CheckerFunc {
 
 		// check type
 		strValue, isString := value.(string)
+		byteSliceValue, isByteSlice := value.([]byte)
+		if !isString && isByteSlice {
+			strValue = string(byteSliceValue)
+			isString = true
+		}
+
 		if !isString {
 			return false
 		}

typecheck/builtin/string_test.go

@@ -87,7 +87,7 @@ func TestString_AnyLength(t *testing.T) {
 		Valid bool
 	}{
 		{"string", true},
-		{[]byte("bytes"), false},
+		{[]byte("bytes"), true},
 		{1, false},
 		{0.1, false},
 		{nil, false},

typecheck/builtin/uint.go

@@ -53,6 +53,15 @@ func readUint(value interface{}) (uint, bool) {
 		overflows := floatVal < 0 || floatVal > math.MaxUint64
 		return uint(floatVal), !overflows
 
+	case []byte:
+		num := json.Number(cast)
+		floatVal, err := num.Float64()
+		if err != nil {
+			return 0, false
+		}
+		overflows := floatVal < 0 || floatVal > math.MaxUint64
+		return uint(floatVal), !overflows
+
 		// unknown type
 	default:
 		return 0, false

util.go

@@ -2,6 +2,7 @@ package aicra
 
 import (
 	"log"
+	"net/http"
 
 	"git.xdrm.io/go/aicra/api"
 	"git.xdrm.io/go/aicra/internal/config"
@@ -10,7 +11,7 @@ import (
 
 // extractParameters extracts parameters for the request and checks
 // every single one according to configuration options
-func (s *Server) extractParameters(store *reqdata.Store, methodParam map[string]*config.Parameter) (map[string]interface{}, api.Error) {
+func (s *httpServer) extractParameters(store *reqdata.Store, methodParam map[string]*config.Parameter) (map[string]interface{}, api.Error) {
 
 	// init vars
 	parameters := make(map[string]interface{})
@@ -77,7 +78,28 @@ func (s *Server) extractParameters(store *reqdata.Store, methodParam map[string]
 	return parameters, api.ErrorSuccess()
 }
 
+var handledMethods = []string{http.MethodGet, http.MethodPost, http.MethodPut, http.MethodDelete}
+
 // Prints an error as HTTP response
 func logError(res *api.Response) {
 	log.Printf("[http.fail] %v\n", res)
 }
+
+// logService logs a service details
+func logService(s config.Service, path string) {
+	for _, method := range handledMethods {
+		if m := s.Method(method); m != nil {
+			if path == "" {
+				log.Printf("* [rest] %s\t'/'\n", method)
+			} else {
+				log.Printf("* [rest] %s\t'%s'\n", method, path)
+			}
+		}
+	}
+
+	if s.Children != nil {
+		for subPath, child := range s.Children {
+			logService(*child, path+"/"+subPath)
+		}
+	}
+}