[ws-manager-mk2] Implement MarkActive

Author: WVerlaek

components/ws-manager-api/go/crd/v1/workspace_types.go

@@ -130,7 +130,7 @@ type WorkspaceStatus struct {
 	Runtime *WorkspaceRuntimeStatus `json:"runtime,omitempty"`
 }
 
-// +kubebuilder:validation:Enum=Deployed;Failed;Timeout;UserActivity;HeadlessTaskFailed;StoppedByRequest;EverReady;ContentReady;BackupComplete;BackupFailure
+// +kubebuilder:validation:Enum=Deployed;Failed;Timeout;FirstUserActivity;Closed;HeadlessTaskFailed;StoppedByRequest;EverReady;ContentReady;BackupComplete;BackupFailure
 type WorkspaceCondition string
 
 const (
@@ -144,8 +144,11 @@ const (
 	// Timeout contains the reason the workspace has timed out.
 	WorkspaceConditionTimeout WorkspaceCondition = "Timeout"
 
-	// UserActivity is the time when MarkActive was first called on the workspace
-	WorkspaceConditionUserActivity WorkspaceCondition = "UserActivity"
+	// FirstUserActivity is the time when MarkActive was first called on the workspace
+	WorkspaceConditionFirstUserActivity WorkspaceCondition = "FirstUserActivity"
+
+	// Closed indicates that a workspace is marked as closed. This will shorten its timeout.
+	WorkspaceConditionClosed WorkspaceCondition = "Closed"
 
 	// HeadlessTaskFailed indicates that a headless workspace task failed
 	WorkspaceConditionsHeadlessTaskFailed WorkspaceCondition = "HeadlessTaskFailed"

components/ws-manager-mk2/controllers/workspace_controller.go

@@ -75,7 +75,9 @@ func (r *WorkspaceReconciler) Reconcile(ctx context.Context, req ctrl.Request) (
 
 	var workspace workspacev1.Workspace
 	if err := r.Get(ctx, req.NamespacedName, &workspace); err != nil {
-		log.Error(err, "unable to fetch workspace")
+		if !errors.IsNotFound(err) {
+			log.Error(err, "unable to fetch workspace")
+		}
 		// we'll ignore not-found errors, since they can't be fixed by an immediate
 		// requeue (we'll need to wait for a new notification), and we can get them
 		// on deleted requests.

components/ws-manager-mk2/main.go

@@ -39,6 +39,7 @@ import (
 	"github.com/gitpod-io/gitpod/common-go/pprof"
 	regapi "github.com/gitpod-io/gitpod/registry-facade/api"
 	"github.com/gitpod-io/gitpod/ws-manager-mk2/controllers"
+	"github.com/gitpod-io/gitpod/ws-manager-mk2/pkg/activity"
 	"github.com/gitpod-io/gitpod/ws-manager-mk2/service"
 	wsmanapi "github.com/gitpod-io/gitpod/ws-manager/api"
 	config "github.com/gitpod-io/gitpod/ws-manager/api/config"
@@ -103,7 +104,8 @@ func main() {
 		os.Exit(1)
 	}
 
-	wsmanService, err := setupGRPCService(cfg, mgr.GetClient())
+	activity := &activity.WorkspaceActivity{}
+	wsmanService, err := setupGRPCService(cfg, mgr.GetClient(), activity)
 	if err != nil {
 		setupLog.Error(err, "unable to start manager service")
 		os.Exit(1)
@@ -137,7 +139,7 @@ func main() {
 	}
 }
 
-func setupGRPCService(cfg *config.ServiceConfiguration, k8s client.Client) (*service.WorkspaceManagerServer, error) {
+func setupGRPCService(cfg *config.ServiceConfiguration, k8s client.Client, activity *activity.WorkspaceActivity) (*service.WorkspaceManagerServer, error) {
 	// TODO(cw): remove use of common-go/log
 
 	if len(cfg.RPCServer.RateLimits) > 0 {
@@ -170,7 +172,7 @@ func setupGRPCService(cfg *config.ServiceConfiguration, k8s client.Client) (*ser
 
 	grpcOpts = append(grpcOpts, grpc.UnknownServiceHandler(proxy.TransparentHandler(imagebuilderDirector(cfg.ImageBuilderProxy.TargetAddr))))
 
-	srv := service.NewWorkspaceManagerServer(k8s, &cfg.Manager, metrics.Registry)
+	srv := service.NewWorkspaceManagerServer(k8s, &cfg.Manager, metrics.Registry, activity)
 
 	grpcServer := grpc.NewServer(grpcOpts...)
 	grpc_prometheus.Register(grpcServer)

components/ws-manager-mk2/pkg/activity/activity.go

@@ -0,0 +1,29 @@
+// Copyright (c) 2023 Gitpod GmbH. All rights reserved.
+// Licensed under the GNU Affero General Public License (AGPL).
+// See License.AGPL.txt in the project root for license information.
+
+package activity
+
+import (
+	"sync"
+	"time"
+)
+
+// WorkspaceActivity is used to track the last user activity per workspace. This is
+// stored in memory instead of on the Workspace resource to limit load on the k8s API,
+// as this value will update often for each workspace.
+type WorkspaceActivity struct {
+	m sync.Map
+}
+
+func (w *WorkspaceActivity) Store(workspaceId string, lastActivity time.Time) {
+	w.m.Store(workspaceId, &lastActivity)
+}
+
+func (w *WorkspaceActivity) GetLastActivity(workspaceId string) *time.Time {
+	lastActivity, ok := w.m.Load(workspaceId)
+	if ok {
+		return lastActivity.(*time.Time)
+	}
+	return nil
+}

components/ws-manager-mk2/service/manager.go

@@ -24,6 +24,7 @@ import (
 	wsk8s "github.com/gitpod-io/gitpod/common-go/kubernetes"
 	"github.com/gitpod-io/gitpod/common-go/log"
 	"github.com/gitpod-io/gitpod/common-go/tracing"
+	"github.com/gitpod-io/gitpod/ws-manager-mk2/pkg/activity"
 	"github.com/gitpod-io/gitpod/ws-manager/api"
 	wsmanapi "github.com/gitpod-io/gitpod/ws-manager/api"
 	"github.com/gitpod-io/gitpod/ws-manager/api/config"
@@ -41,24 +42,26 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
-func NewWorkspaceManagerServer(clnt client.Client, cfg *config.Configuration, reg prometheus.Registerer) *WorkspaceManagerServer {
+func NewWorkspaceManagerServer(clnt client.Client, cfg *config.Configuration, reg prometheus.Registerer, activity *activity.WorkspaceActivity) *WorkspaceManagerServer {
 	metrics := newWorkspaceMetrics()
 	reg.MustRegister(metrics)
 
 	return &WorkspaceManagerServer{
-		Client:  clnt,
-		Config:  cfg,
-		metrics: metrics,
+		Client:   clnt,
+		Config:   cfg,
+		metrics:  metrics,
+		activity: activity,
 		subs: subscriptions{
 			subscribers: make(map[string]chan *wsmanapi.SubscribeResponse),
 		},
 	}
 }
 
 type WorkspaceManagerServer struct {
-	Client  client.Client
-	Config  *config.Configuration
-	metrics *workspaceMetrics
+	Client   client.Client
+	Config   *config.Configuration
+	metrics  *workspaceMetrics
+	activity *activity.WorkspaceActivity
 
 	subs subscriptions
 	wsmanapi.UnimplementedWorkspaceManagerServer
@@ -280,10 +283,15 @@ func (wsm *WorkspaceManagerServer) DescribeWorkspace(ctx context.Context, req *w
 		return nil, status.Errorf(codes.Internal, "cannot lookup workspace: %v", err)
 	}
 
-	return &wsmanapi.DescribeWorkspaceResponse{
+	result := &wsmanapi.DescribeWorkspaceResponse{
 		Status: extractWorkspaceStatus(&ws),
-		// TODO(cw): Add lastActivity
-	}, nil
+	}
+
+	lastActivity := wsm.activity.GetLastActivity(req.Id)
+	if lastActivity != nil {
+		result.LastActivity = lastActivity.UTC().Format(time.RFC3339Nano)
+	}
+	return result, nil
 }
 
 // Subscribe streams all status updates to a client
@@ -296,8 +304,87 @@ func (m *WorkspaceManagerServer) Subscribe(req *api.SubscribeRequest, srv api.Wo
 	return m.subs.Subscribe(srv.Context(), sub)
 }
 
-func (wsm *WorkspaceManagerServer) MarkActive(ctx context.Context, req *wsmanapi.MarkActiveRequest) (*wsmanapi.MarkActiveResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method MarkActive not implemented")
+// MarkActive records a workspace as being active which prevents it from timing out
+func (wsm *WorkspaceManagerServer) MarkActive(ctx context.Context, req *wsmanapi.MarkActiveRequest) (res *wsmanapi.MarkActiveResponse, err error) {
+	//nolint:ineffassign
+	span, ctx := tracing.FromContext(ctx, "MarkActive")
+	tracing.ApplyOWI(span, log.OWI("", "", req.Id))
+	defer tracing.FinishSpan(span, &err)
+
+	workspaceID := req.Id
+
+	var ws workspacev1.Workspace
+	err = wsm.Client.Get(ctx, types.NamespacedName{Namespace: wsm.Config.Namespace, Name: req.Id}, &ws)
+	if errors.IsNotFound(err) {
+		return nil, status.Errorf(codes.NotFound, "workspace %s does not exist", req.Id)
+	}
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "cannot mark workspace: %v", err)
+	}
+
+	var firstUserActivity *timestamppb.Timestamp
+	for _, c := range ws.Status.Conditions {
+		if c.Type == string(workspacev1.WorkspaceConditionFirstUserActivity) {
+			firstUserActivity = timestamppb.New(c.LastTransitionTime.Time)
+		}
+	}
+
+	// if user already mark workspace as active and this request has IgnoreIfActive flag, just simple ignore it
+	if firstUserActivity != nil && req.IgnoreIfActive {
+		return &api.MarkActiveResponse{}, nil
+	}
+
+	// We do not keep the last activity in the workspace resource to limit the load we're placing
+	// on the K8S master in check. Thus, this state lives locally in a map.
+	now := time.Now().UTC()
+	wsm.activity.Store(req.Id, now)
+
+	// We do however maintain the the "closed" flag as annotation on the workspace. This flag should not change
+	// very often and provides a better UX if it persists across ws-manager restarts.
+	isMarkedClosed := conditionPresentAndTrue(ws.Status.Conditions, string(workspacev1.WorkspaceConditionClosed))
+	if req.Closed && !isMarkedClosed {
+		err = wsm.modifyWorkspace(ctx, req.Id, true, func(ws *workspacev1.Workspace) error {
+			ws.Status.Conditions = addUniqueCondition(ws.Status.Conditions, metav1.Condition{
+				Type:               string(workspacev1.WorkspaceConditionClosed),
+				Status:             metav1.ConditionTrue,
+				LastTransitionTime: metav1.NewTime(now),
+				Reason:             "MarkActiveRequest",
+			})
+			return nil
+		})
+	} else if !req.Closed && isMarkedClosed {
+		err = wsm.modifyWorkspace(ctx, req.Id, true, func(ws *workspacev1.Workspace) error {
+			ws.Status.Conditions = addUniqueCondition(ws.Status.Conditions, metav1.Condition{
+				Type:               string(workspacev1.WorkspaceConditionClosed),
+				Status:             metav1.ConditionFalse,
+				LastTransitionTime: metav1.NewTime(now),
+				Reason:             "MarkActiveRequest",
+			})
+			return nil
+		})
+	}
+	if err != nil {
+		log.WithError(err).WithFields(log.OWI("", "", workspaceID)).Warn("was unable to mark workspace properly")
+	}
+
+	// If it's the first call: Mark the pod with FirstUserActivity condition.
+	if firstUserActivity == nil {
+		err := wsm.modifyWorkspace(ctx, req.Id, true, func(ws *workspacev1.Workspace) error {
+			ws.Status.Conditions = addUniqueCondition(ws.Status.Conditions, metav1.Condition{
+				Type:               string(workspacev1.WorkspaceConditionFirstUserActivity),
+				Status:             metav1.ConditionTrue,
+				LastTransitionTime: metav1.NewTime(now),
+				Reason:             "FirstActivity",
+			})
+			return nil
+		})
+		if err != nil {
+			log.WithError(err).WithFields(log.OWI("", "", workspaceID)).Warn("was unable to set FirstUserActivity condition on workspace")
+			return nil, err
+		}
+	}
+
+	return &api.MarkActiveResponse{}, nil
 }
 
 func (wsm *WorkspaceManagerServer) SetTimeout(ctx context.Context, req *wsmanapi.SetTimeoutRequest) (*wsmanapi.SetTimeoutResponse, error) {
@@ -501,7 +588,7 @@ func extractWorkspaceStatus(ws *workspacev1.Workspace) *wsmanapi.WorkspaceStatus
 
 	var timeout string
 	if ws.Spec.Timeout.Time != nil {
-		timeout = ws.Spec.Timeout.Time.String()
+		timeout = ws.Spec.Timeout.Time.Duration.String()
 	}
 
 	var phase wsmanapi.WorkspacePhase
@@ -527,7 +614,7 @@ func extractWorkspaceStatus(ws *workspacev1.Workspace) *wsmanapi.WorkspaceStatus
 
 	var firstUserActivity *timestamppb.Timestamp
 	for _, c := range ws.Status.Conditions {
-		if c.Type == string(workspacev1.WorkspaceConditionUserActivity) {
+		if c.Type == string(workspacev1.WorkspaceConditionFirstUserActivity) {
 			firstUserActivity = timestamppb.New(c.LastTransitionTime.Time)
 		}
 	}
@@ -878,3 +965,23 @@ func (m *workspaceMetrics) Describe(ch chan<- *prometheus.Desc) {
 func (m *workspaceMetrics) Collect(ch chan<- prometheus.Metric) {
 	m.totalStartsCounterVec.Collect(ch)
 }
+
+func addUniqueCondition(conds []metav1.Condition, cond metav1.Condition) []metav1.Condition {
+	for i, c := range conds {
+		if c.Type == cond.Type {
+			conds[i] = cond
+			return conds
+		}
+	}
+
+	return append(conds, cond)
+}
+
+func conditionPresentAndTrue(cond []metav1.Condition, tpe string) bool {
+	for _, c := range cond {
+		if c.Type == tpe {
+			return c.Status == metav1.ConditionTrue
+		}
+	}
+	return false
+}

components/ws-manager-mk2/ws-manager-mk2.code-workspace

@@ -0,0 +1,51 @@
+{
+    "folders": [
+       { "path": "../common-go" },
+       { "path": "../ws-manager" },
+       { "path": "../ws-manager-api" },
+       { "path": "../ws-manager-mk2" },
+       { "path": "../server" },
+       { "path": "../../test" },
+       { "path": "../../dev/gpctl" },
+       { "path": "../../install/installer" }
+    ],
+    "settings": {
+       "typescript.tsdk": "gitpod/node_modules/typescript/lib",
+       "[json]": {
+          "editor.insertSpaces": true,
+          "editor.tabSize": 2
+       },
+       "[yaml]": {
+          "editor.insertSpaces": true,
+          "editor.tabSize": 2
+       },
+       "[go]": {
+          "editor.formatOnSave": true
+       },
+       "[tf]": {
+          "editor.insertSpaces": true,
+          "editor.tabSize": 2
+       },
+       "go.formatTool": "goimports",
+       "go.useLanguageServer": true,
+       "workspace.supportMultiRootWorkspace": true,
+       "database.connections": [
+          {
+             "type": "mysql",
+             "name": "devstaging DB",
+             "host": "127.0.0.1:23306",
+             "username": "gitpod",
+             "database": "gitpod",
+             "password": "test"
+          }
+       ],
+       "launch": {},
+       "files.exclude": {
+          "**/.git": true
+       },
+       "go.lintTool": "golangci-lint",
+       "gopls": {
+          "allowModfileModifications": true
+       }
+    }
+ }