diff --git a/README.md b/README.md index d029e63a..058eee2a 100644 --- a/README.md +++ b/README.md @@ -1672,6 +1672,7 @@ import ( "net/http" "os" "os/signal" + "syscall" "time" "github.com/gin-gonic/gin" @@ -1699,7 +1700,10 @@ func main() { // Wait for interrupt signal to gracefully shutdown the server with // a timeout of 5 seconds. quit := make(chan os.Signal) - signal.Notify(quit, os.Interrupt) + // kill (no param) default send syscanll.SIGTERM + // kill -2 is syscall.SIGINT + // kill -9 is syscall. SIGKILL but can"t be catch, so don't need add it + signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM) <-quit log.Println("Shutdown Server ...") @@ -1708,6 +1712,11 @@ func main() { if err := srv.Shutdown(ctx); err != nil { log.Fatal("Server Shutdown:", err) } + // catching ctx.Done(). timeout of 5 seconds. + select { + case <-ctx.Done(): + log.Println("timeout of 5 seconds.") + } log.Println("Server exiting") } ``` diff --git a/debug_test.go b/debug_test.go index b3485d70..d338f0a0 100644 --- a/debug_test.go +++ b/debug_test.go @@ -39,7 +39,7 @@ func TestDebugPrint(t *testing.T) { SetMode(TestMode) debugPrint("DEBUG this!") SetMode(DebugMode) - debugPrint("these are %d %s\n", 2, "error messages") + debugPrint("these are %d %s", 2, "error messages") SetMode(TestMode) }) assert.Equal(t, "[GIN-debug] these are 2 error messages\n", re) diff --git a/deprecated_test.go b/deprecated_test.go index 7a875fe4..f8df651c 100644 --- a/deprecated_test.go +++ b/deprecated_test.go @@ -24,7 +24,9 @@ func TestBindWith(t *testing.T) { Foo string `form:"foo"` Bar string `form:"bar"` } - assert.NoError(t, c.BindWith(&obj, binding.Form)) + captureOutput(t, func() { + assert.NoError(t, c.BindWith(&obj, binding.Form)) + }) assert.Equal(t, "foo", obj.Bar) assert.Equal(t, "bar", obj.Foo) assert.Equal(t, 0, w.Body.Len()) diff --git a/examples/graceful-shutdown/graceful-shutdown/server.go b/examples/graceful-shutdown/graceful-shutdown/server.go index af4f2146..999a209e 100644 --- a/examples/graceful-shutdown/graceful-shutdown/server.go +++ b/examples/graceful-shutdown/graceful-shutdown/server.go @@ -8,6 +8,7 @@ import ( "net/http" "os" "os/signal" + "syscall" "time" "github.com/gin-gonic/gin" @@ -35,7 +36,10 @@ func main() { // Wait for interrupt signal to gracefully shutdown the server with // a timeout of 5 seconds. quit := make(chan os.Signal) - signal.Notify(quit, os.Interrupt) + // kill (no param) default send syscanll.SIGTERM + // kill -2 is syscall.SIGINT + // kill -9 is syscall. SIGKILL but can"t be catch, so don't need add it + signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM) <-quit log.Println("Shutdown Server ...") @@ -44,5 +48,10 @@ func main() { if err := srv.Shutdown(ctx); err != nil { log.Fatal("Server Shutdown:", err) } + // catching ctx.Done(). timeout of 5 seconds. + select { + case <-ctx.Done(): + log.Println("timeout of 5 seconds.") + } log.Println("Server exiting") } diff --git a/examples/new_relic/README.md b/examples/new_relic/README.md new file mode 100644 index 00000000..70f14942 --- /dev/null +++ b/examples/new_relic/README.md @@ -0,0 +1,30 @@ +The [New Relic Go Agent](https://github.com/newrelic/go-agent) provides a nice middleware for the stdlib handler signature. +The following is an adaptation of that middleware for Gin. + +```golang +const ( + // NewRelicTxnKey is the key used to retrieve the NewRelic Transaction from the context + NewRelicTxnKey = "NewRelicTxnKey" +) + +// NewRelicMonitoring is a middleware that starts a newrelic transaction, stores it in the context, then calls the next handler +func NewRelicMonitoring(app newrelic.Application) gin.HandlerFunc { + return func(ctx *gin.Context) { + txn := app.StartTransaction(ctx.Request.URL.Path, ctx.Writer, ctx.Request) + defer txn.End() + ctx.Set(NewRelicTxnKey, txn) + ctx.Next() + } +} +``` +and in `main.go` or equivalent... +```golang +router := gin.Default() +cfg := newrelic.NewConfig(os.Getenv("APP_NAME"), os.Getenv("NEW_RELIC_API_KEY")) +app, err := newrelic.NewApplication(cfg) +if err != nil { + log.Printf("failed to make new_relic app: %v", err) +} else { + router.Use(adapters.NewRelicMonitoring(app)) +} + ``` diff --git a/examples/new_relic/main.go b/examples/new_relic/main.go new file mode 100644 index 00000000..f85f7831 --- /dev/null +++ b/examples/new_relic/main.go @@ -0,0 +1,42 @@ +package main + +import ( + "log" + "net/http" + "os" + + "github.com/gin-gonic/gin" + "github.com/newrelic/go-agent" +) + +const ( + // NewRelicTxnKey is the key used to retrieve the NewRelic Transaction from the context + NewRelicTxnKey = "NewRelicTxnKey" +) + +// NewRelicMonitoring is a middleware that starts a newrelic transaction, stores it in the context, then calls the next handler +func NewRelicMonitoring(app newrelic.Application) gin.HandlerFunc { + return func(ctx *gin.Context) { + txn := app.StartTransaction(ctx.Request.URL.Path, ctx.Writer, ctx.Request) + defer txn.End() + ctx.Set(NewRelicTxnKey, txn) + ctx.Next() + } +} + +func main() { + router := gin.Default() + + cfg := newrelic.NewConfig(os.Getenv("APP_NAME"), os.Getenv("NEW_RELIC_API_KEY")) + app, err := newrelic.NewApplication(cfg) + if err != nil { + log.Printf("failed to make new_relic app: %v", err) + } else { + router.Use(NewRelicMonitoring(app)) + } + + router.GET("/", func(c *gin.Context) { + c.String(http.StatusOK, "Hello World!\n") + }) + router.Run() +} diff --git a/gin.go b/gin.go index cd47200f..6e5ea6d7 100644 --- a/gin.go +++ b/gin.go @@ -355,8 +355,11 @@ func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request) { // This can be done by setting c.Request.URL.Path to your new target. // Disclaimer: You can loop yourself to death with this, use wisely. func (engine *Engine) HandleContext(c *Context) { + oldIndexValue := c.index c.reset() engine.handleHTTPRequest(c) + + c.index = oldIndexValue } func (engine *Engine) handleHTTPRequest(c *Context) { diff --git a/gin_test.go b/gin_test.go index e013df09..11bdd79c 100644 --- a/gin_test.go +++ b/gin_test.go @@ -12,6 +12,8 @@ import ( "net/http" "net/http/httptest" "reflect" + "strconv" + "sync/atomic" "testing" "time" @@ -25,18 +27,23 @@ func formatAsDate(t time.Time) string { func setupHTMLFiles(t *testing.T, mode string, tls bool, loadMethod func(*Engine)) *httptest.Server { SetMode(mode) - router := New() - router.Delims("{[{", "}]}") - router.SetFuncMap(template.FuncMap{ - "formatAsDate": formatAsDate, - }) - loadMethod(router) - router.GET("/test", func(c *Context) { - c.HTML(http.StatusOK, "hello.tmpl", map[string]string{"name": "world"}) - }) - router.GET("/raw", func(c *Context) { - c.HTML(http.StatusOK, "raw.tmpl", map[string]interface{}{ - "now": time.Date(2017, 07, 01, 0, 0, 0, 0, time.UTC), + defer SetMode(TestMode) + + var router *Engine + captureOutput(t, func() { + router = New() + router.Delims("{[{", "}]}") + router.SetFuncMap(template.FuncMap{ + "formatAsDate": formatAsDate, + }) + loadMethod(router) + router.GET("/test", func(c *Context) { + c.HTML(http.StatusOK, "hello.tmpl", map[string]string{"name": "world"}) + }) + router.GET("/raw", func(c *Context) { + c.HTML(http.StatusOK, "raw.tmpl", map[string]interface{}{ + "now": time.Date(2017, 07, 01, 0, 0, 0, 0, time.UTC), + }) }) }) @@ -488,6 +495,43 @@ func TestEngineHandleContext(t *testing.T) { }) } +func TestEngineHandleContextManyReEntries(t *testing.T) { + expectValue := 10000 + + var handlerCounter, middlewareCounter int64 + + r := New() + r.Use(func(c *Context) { + atomic.AddInt64(&middlewareCounter, 1) + }) + r.GET("/:count", func(c *Context) { + countStr := c.Param("count") + count, err := strconv.Atoi(countStr) + assert.NoError(t, err) + + n, err := c.Writer.Write([]byte(".")) + assert.NoError(t, err) + assert.Equal(t, 1, n) + + switch { + case count > 0: + c.Request.URL.Path = "/" + strconv.Itoa(count-1) + r.HandleContext(c) + } + }, func(c *Context) { + atomic.AddInt64(&handlerCounter, 1) + }) + + assert.NotPanics(t, func() { + w := performRequest(r, "GET", "/"+strconv.Itoa(expectValue-1)) // include 0 value + assert.Equal(t, 200, w.Code) + assert.Equal(t, expectValue, w.Body.Len()) + }) + + assert.Equal(t, int64(expectValue), handlerCounter) + assert.Equal(t, int64(expectValue), middlewareCounter) +} + func assertRoutePresent(t *testing.T, gotRoutes RoutesInfo, wantRoute RouteInfo) { for _, gotRoute := range gotRoutes { if gotRoute.Path == wantRoute.Path && gotRoute.Method == wantRoute.Method { diff --git a/githubapi_test.go b/githubapi_test.go index 50faca09..29aa1584 100644 --- a/githubapi_test.go +++ b/githubapi_test.go @@ -287,7 +287,7 @@ var githubAPI = []route{ func TestShouldBindUri(t *testing.T) { DefaultWriter = os.Stdout - router := Default() + router := New() type Person struct { Name string `uri:"name" binding:"required"` @@ -309,7 +309,7 @@ func TestShouldBindUri(t *testing.T) { func TestBindUri(t *testing.T) { DefaultWriter = os.Stdout - router := Default() + router := New() type Person struct { Name string `uri:"name" binding:"required"` @@ -331,7 +331,7 @@ func TestBindUri(t *testing.T) { func TestBindUriError(t *testing.T) { DefaultWriter = os.Stdout - router := Default() + router := New() type Member struct { Number string `uri:"num" binding:"required,uuid"` @@ -361,7 +361,7 @@ func githubConfigRouter(router *Engine) { func TestGithubAPI(t *testing.T) { DefaultWriter = os.Stdout - router := Default() + router := New() githubConfigRouter(router) for _, route := range githubAPI { @@ -436,7 +436,7 @@ func BenchmarkParallelGithub(b *testing.B) { func BenchmarkParallelGithubDefault(b *testing.B) { DefaultWriter = os.Stdout - router := Default() + router := New() githubConfigRouter(router) req, _ := http.NewRequest("POST", "/repos/manucorporat/sse/git/blobs", nil) diff --git a/go.mod b/go.mod index 54573a8b..6f9d68d1 100644 --- a/go.mod +++ b/go.mod @@ -24,6 +24,7 @@ exclude ( github.com/gin-gonic/autotls v0.0.0-20190119125636-0b5f4fc15768 github.com/jessevdk/go-assets v0.0.0-20160921144138-4f4301a06e15 github.com/manucorporat/stats v0.0.0-20180402194714-3ba42d56d227 + github.com/newrelic/go-agent v2.5.0+incompatible github.com/thinkerou/favicon v0.1.0 golang.org/x/crypto v0.0.0-20190123085648-057139ce5d2b golang.org/x/lint v0.0.0-20181217174547-8f45f776aaf1 diff --git a/recovery_test.go b/recovery_test.go index e886eaac..0a6d6271 100644 --- a/recovery_test.go +++ b/recovery_test.go @@ -43,6 +43,7 @@ func TestPanicInHandler(t *testing.T) { assert.Equal(t, http.StatusInternalServerError, w.Code) assert.Contains(t, buffer.String(), "GET /recovery") + SetMode(TestMode) } // TestPanicWithAbort assert that panic has been recovered even if context.Abort was used.