Cam

Http And Socket Framework

Cam is a personal open source framework. It's goal is not to be lightweight, but to be a large framework of multi-functional integration.

Cam may not be suitable for small projects. It may be more suitable for medium and large-scale projects under multiple modules, at least this is the original intention of its development

Contents

• Cam
  • Framework structure
  • Start with template. Jump to cam-template
  • Easy start
    • If you don't want cumbersome configuration. You can try this. But most documents are based on the the cam-template
  • Template struct
  • Environment support
    • Jump to XORM
  • Components
  • Examples
    • .Env file
    • Upload file
    • Validation
    • Middleware
    • Grpc
• Contact

Framework structure

Easy start

1. Create two file:

go.mod

module app

go 1.14

require (
	github.com/go-cam/cam v0.4.4
)

main.go

package main

import (
    "github.com/go-cam/cam"
    "github.com/go-cam/cam/plugin/camRouter"
)

func main() {
	cam.RegisterController(&HelloController{})
	cam.RunDefault()
}

type HelloController struct {
	camRouter.Controller
}

func (ctrl *HelloController) Cam() {
	ctrl.SetResponse([]byte("cam is word."))
}

2. Build and run

build

go build main.go

run

./main

Open the browser and open link: http://127.0.0.1:20200/hello/cam

Template struct:

The document is explained based on this directory

.
|-- .docker                 // docker file
|-- common                  // common module directory
  |-- config                
    |-- app.go              // common module config
  |-- templates
    |-- xorm                // xorm generate orm files's template
      |-- config
      |-- struct.go.tpl
|-- server                  // server module directory
  |-- config
    |-- app.go
    |-- bootstrap.go        // app bootstrap file
  |-- controllers           // controllers directory
    |-- HelloController.go
  |-- main.go               // entry of server module
|-- .gitignore
|-- cam.go                  // command line tools. you can build and execute it
|-- go.mod
|-- go.sum
|-- LICENSE
|-- README.md

Environment support

• System
  • window
  • linux
• Database source (Relational database. Supports all XORM supported engines)
  • Mysql5.* / Mysql8.* / Mariadb / Tidb
    • github.com/go-sql-driver/mysql
    • github.com/ziutek/mymysql/godrv
  • Postgres / Cockroach
    • github.com/lib/pq
  • SQLite
    • github.com/mattn/go-sqlite3
  • MsSql
    • github.com/denisenkom/go-mssqldb
  • Oracle
    • github.com/mattn/go-oci8 (experiment)
• Cache engine
  • File
  • Redis

Components

Components are the functions provided by the framework. Such as: http, websocket, cache, database, console, etc. It is a package of individual functions.

You can also package components according to your requirements, as long as you implement camBase.ComponentInterface And corresponding configuration implementation camBase.ComponentConfigInterface that will do

Examples

.Env file

.env file must be in the same directory as the executable file.

It is recommended to create .env file in this directory: ./server/.env

./server/.env:

DB_USERNAME = root
DB_PASSWORD = 123456

use in code:

func test() {
  username := cam.App.GetEnv("DB_USERNAME") // username = "root"
  password := cam.App.GetEnv("DB_PASSWORD") // password = "123456"
  fmt.println(username + " " + password) // output: "root 123456"
}

Upload file

Example:

FileController.go:

import (
	"github.com/go-cam/cam"
	"github.com/go-cam/cam/base/camUtils"
)

type FileController struct {
	cam.HttpController
}

func (ctrl *FileController) Upload() {
	uploadFile := ctrl.GetFile("file")
	if uploadFile == nil {
		cam.App.Fatal("FileController.Upload", "no upload file")
		return
	}

	absFilename := camUtils.File.GetRunPath() + "/runtime/upload/tmp.jpg"
	err := uploadFile.Save(absFilename)
	if err != nil {
		cam.App.Fatal("FileController.Upload", err.Error())
		return
	}

	cam.App.Trace("FileController.Upload", absFilename)
}

Then post file to http://.../file/upload

Validation

Example:

package valid

import (
    "github.com/go-cam/cam"
    "github.com/go-cam/cam/base/camBase"
    "github.com/go-cam/cam/base/camStructs"
)

type User struct {
	Email   string
	MyEmail Email
}

type Email string

func (user *User) Rules() []camBase.RuleInterface {
	return []camBase.RuleInterface{
		camStructs.NewRule([]string{"Email", "MyEmail"}, cam.Rule.Email, cam.Rule.Length(0, 100)),
	}
}

func init() {
	user := new(User)
	user.Email = "123123"
	user.MyEmail = "[email protected]"
	firstErr, _ := cam.Valid(user)
	if firstErr != nil {
		panic(firstErr)
	}
}

Middleware

Support Component: HttpComponent, WebsocketComponent, SocketComponent

add in ComponentConfig

package config

import (
	"github.com/go-cam/cam"
	"github.com/go-cam/cam/base/camBase"
    "github.com/go-cam/cam/component/camHttp"
)


func httpServer() camBase.ComponentConfigInterface {
	config := camHttp.NewHttpComponentConfig(20000)
	config.Register(&controllers.TestController{}) 
	// Add middleware
	config.AddMiddleware("", &AMiddleware{}) // All route will use this Middleware
	return config
}

type AMiddleware struct {
}

func (mid *AMiddleware) Handler(ctx camBase.ContextInterface, next camBase.NextHandler) []byte {
	cam.Debug("AMiddleware", "before")
	res := next()
	cam.Debug("AMiddleware", "after")
	return res
}

Grpc

Grpc Server

Grpc Client

Contact