Version 0.17.1

params.go

@@ -6,12 +6,13 @@ package revel
 
 import (
 	"encoding/json"
+	"errors"
+	"io"
 	"io/ioutil"
 	"mime/multipart"
 	"net/url"
 	"os"
 	"reflect"
-	"errors"
 )
 
 // Params provides a unified view of the request params.
@@ -32,6 +33,7 @@ type Params struct {
 	Query url.Values // Parameters from the query string, e.g. /index?limit=10
 	Form  url.Values // Parameters from the request body.
 
+	Body     io.ReadCloser
 	Files    map[string][]*multipart.FileHeader // Files uploaded in a multipart form
 	tmpFiles []*os.File                         // Temp files used during the request.
 	JSON     []byte                             // JSON data from request body
@@ -40,6 +42,7 @@ type Params struct {
 // ParseParams parses the `http.Request` params into `revel.Controller.Params`
 func ParseParams(params *Params, req *Request) {
 	params.Query = req.URL.Query()
+	params.Body = req.Body
 
 	// Parse the body depending on the content type.
 	switch req.ContentType {
@@ -60,24 +63,19 @@ func ParseParams(params *Params, req *Request) {
 			params.Form = req.MultipartForm.Value
 			params.Files = req.MultipartForm.File
 		}
-	case "application/json":
-		fallthrough
-	case "text/json":
-		if req.Body != nil {
-			if content, err := ioutil.ReadAll(req.Body); err == nil {
-				// We wont bind it until we determine what we are binding too
-				params.JSON = content
-			} else {
-				ERROR.Println("Failed to ready request body bytes", err)
-			}
-		} else {
-			INFO.Println("Json post received with empty body")
-		}
 	}
 
 	params.Values = params.calcValues()
 }
 
+func (p *Params) GetBody() (bytes []byte, err error) {
+	if p.Body == nil {
+		return nil, errors.New("Nil request body")
+	}
+	bytes, err = ioutil.ReadAll(p.Body)
+	return
+}
+
 // Bind looks for the named parameter, converts it to the requested type, and
 // writes it into "dest", which must be settable.  If the value can not be
 // parsed, "dest" is set to the zero value.
@@ -101,18 +99,24 @@ func (p *Params) Bind(dest interface{}, name string) {
 	p.JSON = jsonData
 }
 
-// Bind binds the JSON data to the dest.
+// BindJSON binds the JSON data to the dest.
 func (p *Params) BindJSON(dest interface{}) error {
 	value := reflect.ValueOf(dest)
 	if value.Kind() != reflect.Ptr {
-		WARN.Println("BindJSON not a pointer")
 		return errors.New("BindJSON not a pointer")
 	}
-	if err := json.Unmarshal(p.JSON, dest); err != nil {
-		WARN.Println("W: bindMap: Unable to unmarshal request:", err)
+	if p.Body == nil {
+		return errors.New("Empty body")
+	}
+	if p.JSON != nil {
+		return json.Unmarshal(p.JSON, dest)
+	}
+	content, err := ioutil.ReadAll(p.Body)
+	if err != nil {
 		return err
 	}
-	return nil
+	p.JSON = content
+	return json.Unmarshal(content, dest)
 }
 
 // calcValues returns a unified view of the component param maps.

server.go

@@ -7,13 +7,14 @@ package revel
 import (
 	"fmt"
 	"io"
-	"net"
 	"net/http"
 	"sort"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
+	"github.com/facebookgo/grace/gracehttp"
 	"golang.org/x/net/websocket"
 )
 
@@ -23,6 +24,7 @@ var (
 	MainTemplateLoader *TemplateLoader
 	MainWatcher        *Watcher
 	Server             *http.Server
+	wg                 sync.WaitGroup
 )
 
 // This method handles all requests.  It dispatches to handleInternal after
@@ -56,6 +58,8 @@ func handleInternal(w http.ResponseWriter, r *http.Request, ws *websocket.Conn)
 	start := time.Now()
 	clientIP := ClientIP(r)
 
+	wg.Add(1)
+	defer wg.Done()
 	var (
 		req  = NewRequest(r)
 		resp = NewResponse(w)
@@ -127,15 +131,14 @@ func Run(port int) {
 		port = HTTPPort
 	}
 
-	var network = "tcp"
 	var localAddress string
 
 	// If the port is zero, treat the address as a fully qualified local address.
 	// This address must be prefixed with the network type followed by a colon,
 	// e.g. unix:/tmp/app.socket or tcp6:::1 (equivalent to tcp6:0:0:0:0:0:0:0:1)
 	if port == 0 {
 		parts := strings.SplitN(address, ":", 2)
-		network = parts[0]
+		// network = parts[0]
 		localAddress = parts[1]
 	} else {
 		localAddress = address + ":" + strconv.Itoa(port)
@@ -150,26 +153,27 @@ func Run(port int) {
 
 	InitServer()
 
+	// Crazy Harness needs this output for "revel run" to work.
 	go func() {
 		time.Sleep(100 * time.Millisecond)
 		fmt.Printf("Listening on %s...\n", Server.Addr)
 	}()
 
-	if HTTPSsl {
-		if network != "tcp" {
-			// This limitation is just to reduce complexity, since it is standard
-			// to terminate SSL upstream when using unix domain sockets.
-			ERROR.Fatalln("SSL is only supported for TCP sockets. Specify a port to listen on.")
-		}
-		ERROR.Fatalln("Failed to listen:",
-			Server.ListenAndServeTLS(HTTPSslCert, HTTPSslKey))
-	} else {
-		listener, err := net.Listen(network, Server.Addr)
-		if err != nil {
-			ERROR.Fatalln("Failed to listen:", err)
-		}
-		ERROR.Fatalln("Failed to serve:", Server.Serve(listener))
+	Server = &http.Server{
+		Addr:    localAddress,
+		Handler: http.HandlerFunc(handle),
+	}
+
+	if err := gracehttp.Serve(Server); err != nil {
+		ERROR.Fatalln("Failed to serve:", err)
 	}
+
+	INFO.Println("Waiting for handlers to complete.")
+	wg.Wait()
+	INFO.Println("Running Shutdown Hooks.")
+	runShutdownHooks()
+
+	INFO.Println("Exit.")
 }
 
 func runStartupHooks() {
@@ -184,6 +188,14 @@ type StartupHook struct {
 	f     func()
 }
 
+func runShutdownHooks() {
+	for _, hook := range shutdownHooks {
+		hook()
+	}
+}
+
+var shutdownHooks []func()
+
 type StartupHooks []StartupHook
 
 var startupHooks StartupHooks
@@ -243,3 +255,41 @@ func OnAppStart(f func(), order ...int) {
 	}
 	startupHooks = append(startupHooks, StartupHook{order: o, f: f})
 }
+
+// Register a function to be run at app shutdown.
+//
+// The order you register the functions will be the order they are run.
+// You can think of it as a FIFO queue.
+// This process will happen after the server has received a shutdown signal,
+// and after the server has stopped listening for connections.
+//
+// If your application spawns it's own goroutines it will also be responsible
+// for the graceful cleanup of those. Otherwise they will terminate with the main thread.
+//
+// Example:
+//
+//      // from: yourapp/app/controllers/somefile.go
+//      func ShutdownBackgroundDBProcess() {
+//          // waits for background process to complete,
+//          // or sends a signal on a termination channel.
+//      }
+//
+//      func CloseDB() {
+//          // do DB cleanup stuff here
+//      }
+//
+//      // from: yourapp/app/init.go
+//      func init() {
+//          // set up filters...
+//
+//          // register startup functions
+//          revel.OnAppShutdown(ShutdownBackgroundDBProcess)
+//          revel.OnAppShutdown(CloseDB)
+//      }
+//
+// This can be useful when you need to close client connections, files,
+// shutdown or terminate monitors and other goroutines.
+//
+func OnAppShutdown(f func()) {
+	shutdownHooks = append(shutdownHooks, f)
+}