Add error to GetSession return values

- Add button to copy instance SSH access

Gopkg.lock

@@ -353,6 +353,12 @@
   revision = "fde5e16d32adc7ad637e9cd9ad21d4ebc6192535"
   version = "v0.2.0"
 
+[[projects]]
+  name = "github.com/zbindenren/negroni-prometheus"
+  packages = ["."]
+  revision = "b4860d1377680423b4c7f957ef4fce828deacf65"
+  version = "v0.1.1"
+
 [[projects]]
   branch = "master"
   name = "golang.org/x/crypto"
@@ -434,6 +440,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "e9fd1884fe1cc9d2801810e3934b9caa124434efda447ee2f93435737b2e735f"
+  inputs-digest = "2468168ab5c826aef27405ea9a3e72c6a99fbea6639099f2600470330509f8d9"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -84,3 +84,7 @@
 [[constraint]]
   branch = "master"
   name = "github.com/satori/go.uuid"
+
+[[constraint]]
+  name = "github.com/zbindenren/negroni-prometheus"
+  version = "0.1.1"

handlers/bootstrap.go

@@ -19,6 +19,7 @@ import (
 	"github.com/play-with-docker/play-with-docker/config"
 	"github.com/play-with-docker/play-with-docker/event"
 	"github.com/play-with-docker/play-with-docker/pwd"
+	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/urfave/negroni"
 )
@@ -27,8 +28,19 @@ var core pwd.PWDApi
 var e event.EventApi
 var landings = map[string][]byte{}
 
+var latencyHistogramVec = prometheus.NewHistogramVec(prometheus.HistogramOpts{
+	Name:    "pwd_handlers_duration_ms",
+	Help:    "How long it took to process a specific handler, in a specific host",
+	Buckets: []float64{300, 1200, 5000},
+}, []string{"action"})
+
 type HandlerExtender func(h *mux.Router)
 
+func init() {
+	prometheus.MustRegister(latencyHistogramVec)
+
+}
+
 func Bootstrap(c pwd.PWDApi, ev event.EventApi) {
 	core = c
 	e = ev
@@ -53,6 +65,10 @@ func Register(extend HandlerExtender) {
 	corsRouter.HandleFunc("/sessions/{sessionId}/instances/{instanceName}", DeleteInstance).Methods("DELETE")
 	corsRouter.HandleFunc("/sessions/{sessionId}/instances/{instanceName}/exec", Exec).Methods("POST")
 
+	r.HandleFunc("/sessions/{sessionId}/instances/{instanceName}/editor.html", func(rw http.ResponseWriter, r *http.Request) {
+		http.ServeFile(rw, r, "www/editor.html")
+	})
+
 	r.HandleFunc("/ooc", func(rw http.ResponseWriter, r *http.Request) {
 		http.ServeFile(rw, r, "./www/ooc.html")
 	}).Methods("GET")
@@ -64,9 +80,6 @@ func Register(extend HandlerExtender) {
 	r.HandleFunc("/robots.txt", func(rw http.ResponseWriter, r *http.Request) {
 		http.ServeFile(rw, r, "www/robots.txt")
 	})
-	r.HandleFunc("/sdk.js", func(rw http.ResponseWriter, r *http.Request) {
-		http.ServeFile(rw, r, "www/sdk.js")
-	})
 
 	corsRouter.HandleFunc("/sessions/{sessionId}/ws/", WSH)
 	r.Handle("/metrics", promhttp.Handler())
@@ -90,6 +103,7 @@ func Register(extend HandlerExtender) {
 	}
 
 	n := negroni.Classic()
+
 	r.PathPrefix("/").Handler(negroni.New(negroni.Wrap(corsHandler(corsRouter))))
 	n.UseHandler(r)
 
@@ -128,7 +142,11 @@ func Register(extend HandlerExtender) {
 			rr.HandleFunc("/ping", Ping).Methods("GET")
 			rr.Handle("/metrics", promhttp.Handler())
 			rr.HandleFunc("/", func(rw http.ResponseWriter, r *http.Request) {
-				http.Redirect(rw, r, fmt.Sprintf("https://%s", r.Host), http.StatusMovedPermanently)
+				target := fmt.Sprintf("https://%s%s", r.Host, r.URL.Path)
+				if len(r.URL.RawQuery) > 0 {
+					target += "?" + r.URL.RawQuery
+				}
+				http.Redirect(rw, r, target, http.StatusMovedPermanently)
 			})
 			nr := negroni.Classic()
 			nr.UseHandler(rr)

handlers/close_session.go

@@ -5,16 +5,20 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
+	"github.com/play-with-docker/play-with-docker/storage"
 )
 
 func CloseSession(rw http.ResponseWriter, req *http.Request) {
 	vars := mux.Vars(req)
 	sessionId := vars["sessionId"]
 
-	session := core.SessionGet(sessionId)
+	session, err := core.SessionGet(sessionId)
-	if session == nil {
+	if err == storage.NotFoundError {
 		rw.WriteHeader(http.StatusNotFound)
 		return
+	} else if err != nil {
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
 	}
 
 	if err := core.SessionClose(session); err != nil {

handlers/delete_instance.go

@@ -4,6 +4,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
+	"github.com/play-with-docker/play-with-docker/storage"
 )
 
 func DeleteInstance(rw http.ResponseWriter, req *http.Request) {
@@ -11,7 +12,7 @@ func DeleteInstance(rw http.ResponseWriter, req *http.Request) {
 	sessionId := vars["sessionId"]
 	instanceName := vars["instanceName"]
 
-	s := core.SessionGet(sessionId)
+	s, err := core.SessionGet(sessionId)
 	if s != nil {
 		i := core.InstanceGet(s, instanceName)
 		err := core.InstanceDelete(s, i)
@@ -19,8 +20,11 @@ func DeleteInstance(rw http.ResponseWriter, req *http.Request) {
 			rw.WriteHeader(http.StatusInternalServerError)
 			return
 		}
-	} else {
+	} else if err == storage.NotFoundError {
-		rw.WriteHeader(http.StatusNotFound)
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	} else if err != nil {
+		rw.WriteHeader(http.StatusInternalServerError)
 		return
 	}
 }

handlers/exec.go

@@ -28,7 +28,7 @@ func Exec(rw http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	s := core.SessionGet(sessionId)
+	s, _ := core.SessionGet(sessionId)
 	if s == nil {
 		rw.WriteHeader(http.StatusNotFound)
 		return

handlers/file_upload.go

@@ -7,6 +7,7 @@ import (
 	"path/filepath"
 
 	"github.com/gorilla/mux"
+	"github.com/play-with-docker/play-with-docker/storage"
 )
 
 func FileUpload(rw http.ResponseWriter, req *http.Request) {
@@ -14,7 +15,14 @@ func FileUpload(rw http.ResponseWriter, req *http.Request) {
 	sessionId := vars["sessionId"]
 	instanceName := vars["instanceName"]
 
-	s := core.SessionGet(sessionId)
+	s, err := core.SessionGet(sessionId)
+	if err == storage.NotFoundError {
+		rw.WriteHeader(http.StatusNotFound)
+		return
+	} else if err != nil {
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
 	i := core.InstanceGet(s, instanceName)
 
 	// allow up to 32 MB which is the default

handlers/get_session.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/gorilla/mux"
 	"github.com/play-with-docker/play-with-docker/pwd/types"
+	"github.com/play-with-docker/play-with-docker/storage"
 )
 
 type SessionInfo struct {
@@ -18,8 +19,11 @@ func GetSession(rw http.ResponseWriter, req *http.Request) {
 	vars := mux.Vars(req)
 	sessionId := vars["sessionId"]
 
-	session := core.SessionGet(sessionId)
+	session, err := core.SessionGet(sessionId)
-	if session == nil {
+	if err == storage.NotFoundError {
+		rw.WriteHeader(http.StatusNotFound)
+		return
+	} else if err != nil {
 		rw.WriteHeader(http.StatusNotFound)
 		return
 	}

handlers/home.go

@@ -7,17 +7,21 @@ import (
 	"path/filepath"
 
 	"github.com/gorilla/mux"
+	"github.com/play-with-docker/play-with-docker/storage"
 )
 
 func Home(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 	sessionId := vars["sessionId"]
 
-	s := core.SessionGet(sessionId)
+	s, err := core.SessionGet(sessionId)
-	if s == nil {
+	if err == storage.NotFoundError {
 		// Session doesn't exist (can happen if closing the sessions an reloading the page, or similar).
 		w.WriteHeader(http.StatusNotFound)
 		return
+	} else if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
 	}
 	if s.Stack != "" {
 		go core.SessionDeployStack(s)

handlers/new_instance.go

@@ -20,7 +20,11 @@ func NewInstance(rw http.ResponseWriter, req *http.Request) {
 
 	json.NewDecoder(req.Body).Decode(&body)
 
-	s := core.SessionGet(sessionId)
+	s, err := core.SessionGet(sessionId)
+	if err != nil {
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
 
 	playground := core.PlaygroundGet(s.PlaygroundId)
 	if playground == nil {

handlers/ping.go

@@ -12,6 +12,7 @@ import (
 )
 
 func Ping(rw http.ResponseWriter, req *http.Request) {
+	defer latencyHistogramVec.WithLabelValues("ping").Observe(float64(time.Since(time.Now()).Nanoseconds()) / 1000000)
 	// Get system load average of the last 5 minutes and compare it against a threashold.
 
 	c, err := docker.NewEnvClient()
@@ -27,6 +28,7 @@ func Ping(rw http.ResponseWriter, req *http.Request) {
 	if _, err := c.Info(ctx); err != nil && err == context.DeadlineExceeded {
 		log.Printf("Docker info took to long to respond\n")
 		rw.WriteHeader(http.StatusGatewayTimeout)
+		return
 	}
 
 	a, err := load.Avg()

handlers/session_setup.go

@@ -17,9 +17,13 @@ func SessionSetup(rw http.ResponseWriter, req *http.Request) {
 
 	json.NewDecoder(req.Body).Decode(&body)
 
-	s := core.SessionGet(sessionId)
+	s, err := core.SessionGet(sessionId)
+	if err != nil {
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
 
-	err := core.SessionSetup(s, body)
+	err = core.SessionSetup(s, body)
 	if err != nil {
 		if pwd.SessionNotEmpty(err) {
 			log.Println("Cannot setup a session that contains instances")

handlers/ws.go

@@ -10,6 +10,7 @@ import (
 	"github.com/gorilla/mux"
 	"github.com/gorilla/websocket"
 	"github.com/play-with-docker/play-with-docker/event"
+	"github.com/play-with-docker/play-with-docker/storage"
 	"github.com/satori/go.uuid"
 )
 
@@ -144,8 +145,8 @@ func ws(so *socket) {
 
 	sessionId := vars["sessionId"]
 
-	session := core.SessionGet(sessionId)
+	session, err := core.SessionGet(sessionId)
-	if session == nil {
+	if err == storage.NotFoundError {
 		log.Printf("Session with id [%s] does not exist!\n", sessionId)
 		return
 	}

pwd/pwd.go

@@ -77,7 +77,7 @@ type PWDApi interface {
 	SessionClose(session *types.Session) error
 	SessionGetSmallestViewPort(sessionId string) types.ViewPort
 	SessionDeployStack(session *types.Session) error
-	SessionGet(id string) *types.Session
+	SessionGet(id string) (*types.Session, error)
 	SessionSetup(session *types.Session, conf SessionSetupConf) error
 
 	InstanceNew(session *types.Session, conf types.InstanceConfig) (*types.Instance, error)

pwd/session.go

@@ -205,17 +205,17 @@ func (p *pwd) SessionDeployStack(s *types.Session) error {
 	return nil
 }
 
-func (p *pwd) SessionGet(sessionId string) *types.Session {
+func (p *pwd) SessionGet(sessionId string) (*types.Session, error) {
 	defer observeAction("SessionGet", time.Now())
 
 	s, err := p.storage.SessionGet(sessionId)
 
 	if err != nil {
 		log.Println(err)
-		return nil
+		return nil, err
 	}
 
-	return s
+	return s, nil
 }
 
 func (p *pwd) SessionSetup(session *types.Session, sconf SessionSetupConf) error {

www/assets/app.js

@@ -1,7 +1,7 @@
 (function() {
   'use strict';
 
-  var app = angular.module('DockerPlay', ['ngMaterial', 'ngFileUpload']);
+  var app = angular.module('DockerPlay', ['ngMaterial', 'ngFileUpload', 'ngclipboard']);
 
   // Automatically redirects user to a new session when bypassing captcha.
   // Controller keeps code/logic separate from the HTML

www/default/index.html

@@ -116,6 +116,9 @@
                       </md-card-content>
                       <md-card-actions>
                           <md-button class="md-warn md-raised" ng-click="deleteInstance(instance)" ng-disabled="isInstanceBeingDeleted">{{deleteInstanceBtnText}}</md-button>
+                          <md-button class="md-raised" ngclipboard data-clipboard-text="ssh {{instance.proxy_host}}@direct.{{instance.session_host}}">SSH
+                              <md-tooltip md-direction="top">Copied</md-tooltip>
+                          </md-button>
                           </md-card-actions>
                   </md-card>
                   <md-card flex md-theme="default" md-theme-watch >
@@ -291,6 +294,8 @@
         <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.5/angular-aria.min.js"></script>
         <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.5/angular-messages.min.js"></script>
         <script src="https://ajax.googleapis.com/ajax/libs/angular_material/1.1.0/angular-material.min.js"></script>
+        <script src="https://cdn.rawgit.com/zenorocha/clipboard.js/master/dist/clipboard.min.js"></script>
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/ngclipboard/1.1.2/ngclipboard.min.js"></script>
 
 
         <script src="https://cdnjs.cloudflare.com/ajax/libs/danialfarid-angular-file-upload/12.2.13/ng-file-upload-all.min.js" integrity="sha256-LrZq3efIkFX0BooX7x/rjWyYDvMKfFV2HJpy6HBw7cE=" crossorigin="anonymous"></script>