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gin.go
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gin.go
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package hitrix
import (
"bytes"
"context"
"errors"
"fmt"
"io/ioutil"
"runtime/debug"
"time"
"github.com/gin-contrib/timeout"
"github.com/coretrix/hitrix/pkg/helper"
"github.com/coretrix/hitrix/service"
"github.com/99designs/gqlgen/graphql"
"github.com/99designs/gqlgen/graphql/handler"
"github.com/99designs/gqlgen/graphql/handler/extension"
"github.com/99designs/gqlgen/graphql/handler/lru"
"github.com/99designs/gqlgen/graphql/handler/transport"
"github.com/99designs/gqlgen/graphql/playground"
"github.com/gin-gonic/gin"
"github.com/gin-gonic/gin/binding"
)
type GinInitHandler func(ginEngine *gin.Engine)
type GQLServerInitHandler func(server *handler.Server)
func contextToContextMiddleware() gin.HandlerFunc {
return func(c *gin.Context) {
body, err := c.GetRawData()
if err != nil {
panic(err)
}
c.Request.Body = ioutil.NopCloser(bytes.NewReader(body))
ctx := context.WithValue(c.Request.Context(), service.GinKey, c)
ctx = context.WithValue(ctx, service.RequestBodyKey, body)
c.Request = c.Request.WithContext(ctx)
c.Next()
}
}
func InitGin(server graphql.ExecutableSchema, ginInitHandler GinInitHandler, gqlServerInitHandler GQLServerInitHandler) *gin.Engine {
app := service.DI().App()
if app.IsInProdMode() {
gin.SetMode(gin.ReleaseMode)
} else if app.IsInTestMode() {
gin.SetMode(gin.TestMode)
}
ginEngine := gin.New()
if !app.IsInProdMode() {
ginEngine.Use(gin.Logger())
}
ginEngine.Use(recovery())
ginEngine.Use(contextToContextMiddleware())
if ginInitHandler != nil {
ginInitHandler(ginEngine)
}
if app.DevPanel != nil {
devRouter := app.DevPanel.Router
devRouter(ginEngine)
}
if server != nil {
var queryHandler gin.HandlerFunc
if app.IsInLocalMode() {
queryHandler = graphqlHandler(server, gqlServerInitHandler)
} else {
queryHandler = timeout.New(
timeout.WithTimeout(10*time.Second),
timeout.WithHandler(graphqlHandler(server, gqlServerInitHandler)),
timeout.WithResponse(func(c *gin.Context) {
service.DI().ErrorLogger().LogErrorWithRequest(c, "TIMEOUT ERROR")
}),
)
}
ginEngine.POST("/query", queryHandler)
ginEngine.GET("/", playgroundHandler())
}
binding.Validator = helper.NewValidator()
return ginEngine
}
func graphqlHandler(server graphql.ExecutableSchema, gqlServerInitHandler GQLServerInitHandler) gin.HandlerFunc {
h := handler.New(server)
h.AddTransport(transport.Websocket{
KeepAlivePingInterval: 10 * time.Second,
})
h.AddTransport(transport.Options{})
h.AddTransport(transport.POST{})
h.SetQueryCache(lru.New(1000))
h.Use(extension.Introspection{})
h.Use(extension.AutomaticPersistedQuery{
Cache: lru.New(100),
})
h.SetRecoverFunc(func(ctx context.Context, err interface{}) error {
var message string
asErr, is := err.(error)
if is {
message = asErr.Error()
} else {
message = fmt.Sprint(err)
}
errorMessage := message + "\n" + string(debug.Stack())
ginContext := ctx.Value(service.GinKey).(*gin.Context)
requestBody := ctx.Value(service.RequestBodyKey).([]byte)
ginContext.Request.Body = ioutil.NopCloser(bytes.NewReader(requestBody))
service.DI().ErrorLogger().LogErrorWithRequest(ginContext, errors.New(errorMessage))
return errors.New("internal server error")
})
if gqlServerInitHandler != nil {
gqlServerInitHandler(h)
}
return func(c *gin.Context) {
h.ServeHTTP(c.Writer, c.Request)
}
}
func playgroundHandler() gin.HandlerFunc {
h := playground.Handler("GraphQL", "/query")
return func(c *gin.Context) {
c.Writer.Header().Add("X-Robots-Tag", "noindex")
h.ServeHTTP(c.Writer, c.Request)
}
}