/
main.go
163 lines (138 loc) · 4.38 KB
/
main.go
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package main
import (
"fmt"
"io"
"net/http"
"os"
"time"
"github.com/gorilla/mux"
"github.com/loupzeur/go-crud-api/api"
"github.com/loupzeur/go-crud-api/middlewares"
"github.com/loupzeur/go-crud-api/utils"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/log"
"github.com/rs/cors"
"github.com/uber/jaeger-client-go"
"github.com/uber/jaeger-client-go/config"
"github.com/uber/jaeger-client-go/zipkin"
"gorm.io/driver/sqlite"
"gorm.io/gorm"
gormopentracing "gorm.io/plugin/opentracing"
)
/*
https://github.com/jaegertracing/jaeger-client-go
*/
//basic HTTP server with jaeger debug
func main() {
closer := setTracing()
defer closer.Close()
port := os.Getenv("PORT")
if port == "" {
port = "8000"
}
setDB()
router := setRouter()
var handler http.Handler = router
//some example cors for a website on localhost:3000
if os.Getenv("cors_dev") == "true" {
c := cors.New(cors.Options{
AllowedOrigins: []string{
"http://localhost:3000",
},
AllowedMethods: []string{"GET", "POST", "DELETE", "PUT", "OPTIONS", "OPTION"},
AllowedHeaders: []string{`Referer`, `user`, `Origin`, `DNT`, `User-Agent`, `X-Requested-With`, `If-Modified-Since`, `Cache-Control`, `Content-Type`, `Range`, `Authorization`, `X-Content-Length`, `X-Content-Name`, `X-Content-Extension`, `X-Chunk-Id`, `maxSize`, `maxWidth`, `maxHeight`, `fileType`},
AllowCredentials: true,
})
handler = c.Handler(router)
}
//the server
srv := http.Server{
ReadTimeout: 0,
WriteTimeout: 600 * time.Second,
IdleTimeout: 0,
ReadHeaderTimeout: 0,
Addr: ":" + port,
Handler: handler,
}
srv.ListenAndServe()
}
func setRouter() *mux.Router {
router := mux.NewRouter().StrictSlash(true)
router.Use(middlewares.JaeggerLogger) //use of jaegger logger
router.Use(middlewares.RecoverWrap)
router.Use(middlewares.JwtAuthentication)
middlewares.Routes = utils.Routes{utils.Route{Name: "test", Method: "GET", Pattern: "/test", Authorization: uint32(utils.NoRight), HandlerFunc: func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "test")
span := opentracing.GlobalTracer().StartSpan("simple-test")
span.LogFields(log.String("test", "test"))
span.Finish()
}}}.Append(api.CrudRoutes(&TestObject{},
utils.DefaultQueryAll, utils.NoRight, //QueryAll
api.DefaultRightAccess, utils.NoRight, //Read
api.DefaultRightAccess, utils.NoRight, //Create
api.DefaultRightEdit, utils.NoRight, //Edit
api.DefaultRightAccess, utils.NoRight, //Delete
))
for _, route := range middlewares.Routes {
router.Methods(route.Method).Path(route.Pattern).Handler(route.HandlerFunc).Name(route.Name)
}
return router
}
func setDB() {
db, _ := gorm.Open(sqlite.Open("gorm.db"), &gorm.Config{})
api.SetDB(db)
db.AutoMigrate(&TestObject{})
db.Use(gormopentracing.New())
}
func setTracing() io.Closer {
zipkinPropagator := zipkin.NewZipkinB3HTTPHeaderPropagator()
cfg := config.Configuration{
ServiceName: "crud-go-api",
Sampler: &config.SamplerConfig{
Type: "const",
Param: 1,
},
Reporter: &config.ReporterConfig{
LogSpans: true,
BufferFlushInterval: 1 * time.Second,
},
}
tracer, closer, _ := cfg.NewTracer(
config.Logger(jaeger.StdLogger), config.ZipkinSharedRPCSpan(true),
config.Injector(opentracing.HTTPHeaders, zipkinPropagator),
config.Extractor(opentracing.HTTPHeaders, zipkinPropagator))
opentracing.SetGlobalTracer(tracer)
return closer
}
//for example :
//Test Object Route
type TestObject struct {
Name string
}
//Default implement
func (c *TestObject) TableName() string {
return "test_object" // can then be accessed in /api/test_object
}
//Validate to validate a model
func (c *TestObject) Validate() (map[string]interface{}, bool) {
if c.Name == "" {
return utils.Message(false, "Name is empty"), false
}
return nil, true
}
//OrderColumns return available columns
func (c *TestObject) OrderColumns() []string {
return []string{}
}
//FilterColumns to return default columns to filter on
func (c *TestObject) FilterColumns() map[string]string {
return map[string]string{}
}
//FindFromRequest to find Data from http request
func (c *TestObject) FindFromRequest(r *http.Request) error {
return utils.DefaultFindFromRequest(r, api.GetDB(), c)
}
//QueryAllFromRequest to find Data from http request
func (c *TestObject) QueryAllFromRequest(r *http.Request, q *gorm.DB) *gorm.DB {
return api.DefaultQueryAll(r, q)
}