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service.go
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service.go
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package ticks24
import (
"errors"
"fmt"
"github.com/appleboy/gin-jwt"
"github.com/braintree/manners"
"github.com/gin-gonic/contrib/gzip"
"github.com/gin-gonic/contrib/static"
"github.com/gin-gonic/gin"
"github.com/goinggo/tracelog"
"github.com/itsjamie/gin-cors"
"github.com/vivek-yadav/ticks24/config"
"github.com/vivek-yadav/ticks24/db/mongo"
"github.com/vivek-yadav/ticks24/middleware/auth"
"github.com/vivek-yadav/ticks24/utils"
"html/template"
"net/http"
"strings"
"time"
)
type Service struct {
Config config.Config `json:"Config"`
Engine *gin.Engine
RootRouter *gin.RouterGroup
AppDB mongo.AppDB
AuthMiddleware *jwt.GinJWTMiddleware
}
var serviceI *Service
// This returns a new Instance of User Management Service
func GetInstance() (*Service, error) {
if serviceI == nil {
service := Service{}
result, err := service.Config.SetEnvArgs()
if result == false && err != nil {
return nil, errors.New("ERROR : Environment Variables were not proper ( " + err.Error() + " )")
}
serviceI = &service
}
return serviceI, nil
}
// This SetConfig function takes filePath of the config file
// and loads the User Management Service Instance with specified settings
// if some error occurs it throws error.
// if no file is sent in filePath param then default settings are loaded
func (this *Service) SetConfigFile(filePath string) (bool, error) {
return this.Config.SetFromFile(filePath)
}
// This sets configuration from command line arguments.
// Use this when you think your users might want to give command line arguments.
// Call this after SetConfig if you want it to have more priority.
func (this *Service) SetCmdArgs() (bool, error) {
return this.Config.SetFromCmdArgs()
}
// This function is used to start-up the service with given settings or default settings
// If you send isblocking true then the system waits for the server to end first before return
// Else the call starts the server and returns, then it is up to you to hold the system to keep the
// service running.
func (this *Service) Start(isBlocking bool) {
if this.Config.LoginService.Ip != "" {
this.RootRouter.POST("/login", this.AuthMiddleware.LoginHandler)
}
if this.Config.AuthService.Ip != "" {
// Authorization group
authRouter := this.RootRouter.Group("/auth")
authRouter.Use(this.AuthMiddleware.MiddlewareFunc())
{
authRouter.GET("/refresh_token", this.AuthMiddleware.RefreshHandler)
}
}
var paths gin.RoutesInfo
this.RootRouter.GET("/_routes", func(c *gin.Context) {
c.JSON(http.StatusOK, paths)
})
paths = this.Engine.Routes()
this.Config.Show()
if isBlocking {
r := make(chan bool)
go func(v chan bool) {
serverPort := fmt.Sprintf(":%v", this.Config.WebServer.Port)
manners.ListenAndServe(serverPort, this.Engine)
v <- true
}(r)
<-r
} else {
go func() {
serverPort := fmt.Sprintf(":%v", this.Config.WebServer.Port)
manners.ListenAndServe(serverPort, this.Engine)
}()
}
}
func (this *Service) GetRootRouter() (*gin.RouterGroup, error) {
if r, err := this.InitService(); r == false && err != nil {
return nil, err
}
if r, err := this.setupRootRouter(); r == false && err != nil {
return nil, err
}
return this.RootRouter, nil
}
// This function sets up the root routing
func (this *Service) setupRootRouter() (bool, error) {
this.RootRouter = this.Engine.Group("/")
//routes.Setup(this.RootRouter)
return true, nil
}
func (this *Service) InitService() (bool, error) {
if len(this.Config.AppDatabases) > 0 {
this.AppDB.Config = &this.Config.AppDatabases[0]
var er error
if this.AppDB, er = this.AppDB.Setup(); er != nil {
return false, errors.New("ERROR : Failed to conenct to AppDatabase[0] (\n\t" + er.Error() + "\n)")
}
}
//_, er := auth.ConnectAuthService(this.Config.AuthService.Ip, int(this.Config.AuthService.Port))
//if er != nil {
// return false, errors.New("ERROR : Failed to conenct to Auth Service (\n\t" + er.Error() + "\n)")
//}
this.AuthMiddleware = auth.Setup(&this.Config)
router := gin.New()
if this.Config.LogConfig.Path != "" {
var level int32
switch strings.ToUpper(this.Config.LogConfig.Level) {
case "TRACE":
level = tracelog.LevelTrace
case "INFO":
level = tracelog.LevelInfo
case "WARN":
level = tracelog.LevelWarn
case "ERROR":
level = tracelog.LevelError
default:
this.Config.LogConfig.Level = "TRACE"
level = tracelog.LevelTrace
}
tracelog.StartFile(level, this.Config.LogConfig.Path, int(this.Config.LogConfig.Days))
router.Use(utils.Logger())
} else {
router.Use(gin.Logger())
}
router.Use(gin.Recovery())
router.Use(gzip.Gzip(gzip.DefaultCompression))
router.Use(static.Serve("/", static.LocalFile(this.Config.FrontEnd.ViewsPath, true)))
html, err := template.New("").Delims(this.Config.FrontEnd.TemplateDelimiterStart, this.Config.FrontEnd.TemplateDelimiterEnd).ParseGlob(this.Config.FrontEnd.TemplatesPath + "/**/*")
if err != nil {
return false, errors.New("ERROR : Failed to set Templates Path for Server : ( " + err.Error() + " )")
}
router.SetHTMLTemplate(html)
// Apply the middleware to the router (works with groups too)
router.Use(cors.Middleware(cors.Config{
Origins: "*",
Methods: "GET, PUT, POST, DELETE",
RequestHeaders: "Origin, Authorization, Content-Type",
ExposedHeaders: "",
MaxAge: 50 * time.Second,
Credentials: true,
ValidateHeaders: false,
}))
this.Engine = router
return true, nil
}
// This function is used to stop the service
func (this *Service) Stop() (bool, error) {
return true, nil
}
// This function is used to Re-Start the service
func (this *Service) ReStart() (bool, error) {
return true, nil
}