coder · johnstcn · May 5, 2023 · Apr 18, 2023 · Apr 27, 2023 · Apr 27, 2023
diff --git a/cli/root.go b/cli/root.go
@@ -87,11 +87,12 @@ func (r *RootCmd) Core() []*clibase.Cmd {
 
 		// Workspace Commands
 		r.configSSH(),
-		r.rename(),
-		r.ping(),
 		r.create(),
 		r.deleteWorkspace(),
 		r.list(),
+		r.parameters(),
+		r.ping(),
+		r.rename(),
 		r.schedules(),
 		r.show(),
 		r.speedtest(),
@@ -100,13 +101,12 @@ func (r *RootCmd) Core() []*clibase.Cmd {
 		r.stop(),
 		r.update(),
 		r.restart(),
-		r.parameters(),
 
 		// Hidden
-		r.workspaceAgent(),
-		r.scaletest(),
 		r.gitssh(),
+		r.scaletest(),
 		r.vscodeSSH(),
+		r.workspaceAgent(),
 	}
 }
 

diff --git a/cli/scaletest.go b/cli/scaletest.go
@@ -27,6 +27,7 @@ import (
 	"github.com/coder/coder/scaletest/createworkspaces"
 	"github.com/coder/coder/scaletest/harness"
 	"github.com/coder/coder/scaletest/reconnectingpty"
+	"github.com/coder/coder/scaletest/trafficgen"
 	"github.com/coder/coder/scaletest/workspacebuild"
 )
 
@@ -42,6 +43,7 @@ func (r *RootCmd) scaletest() *clibase.Cmd {
 		Children: []*clibase.Cmd{
 			r.scaletestCleanup(),
 			r.scaletestCreateWorkspaces(),
+			r.scaletestTrafficGen(),
 		},
 	}
 
@@ -384,33 +386,9 @@ func (r *RootCmd) scaletestCleanup() *clibase.Cmd {
 			}
 
 			cliui.Infof(inv.Stdout, "Fetching scaletest workspaces...")
-			var (
-				pageNumber = 0
-				limit      = 100
-				workspaces []codersdk.Workspace
-			)
-			for {
-				page, err := client.Workspaces(ctx, codersdk.WorkspaceFilter{
-					Name:   "scaletest-",
-					Offset: pageNumber * limit,
-					Limit:  limit,
-				})
-				if err != nil {
-					return xerrors.Errorf("fetch scaletest workspaces page %d: %w", pageNumber, err)
-				}
-
-				pageNumber++
-				if len(page.Workspaces) == 0 {
-					break
-				}
-
-				pageWorkspaces := make([]codersdk.Workspace, 0, len(page.Workspaces))
-				for _, w := range page.Workspaces {
-					if isScaleTestWorkspace(w) {
-						pageWorkspaces = append(pageWorkspaces, w)
-					}
-				}
-				workspaces = append(workspaces, pageWorkspaces...)
+			workspaces, err := getScaletestWorkspaces(ctx, client)
+			if err != nil {
+				return err
 			}
 
 			cliui.Errorf(inv.Stderr, "Found %d scaletest workspaces\n", len(workspaces))
@@ -441,33 +419,9 @@ func (r *RootCmd) scaletestCleanup() *clibase.Cmd {
 			}
 
 			cliui.Infof(inv.Stdout, "Fetching scaletest users...")
-			pageNumber = 0
-			limit = 100
-			var users []codersdk.User
-			for {
-				page, err := client.Users(ctx, codersdk.UsersRequest{
-					Search: "scaletest-",
-					Pagination: codersdk.Pagination{
-						Offset: pageNumber * limit,
-						Limit:  limit,
-					},
-				})
-				if err != nil {
-					return xerrors.Errorf("fetch scaletest users page %d: %w", pageNumber, err)
-				}
-
-				pageNumber++
-				if len(page.Users) == 0 {
-					break
-				}
-
-				pageUsers := make([]codersdk.User, 0, len(page.Users))
-				for _, u := range page.Users {
-					if isScaleTestUser(u) {
-						pageUsers = append(pageUsers, u)
-					}
-				}
-				users = append(users, pageUsers...)
+			users, err := getScaletestUsers(ctx, client)
+			if err != nil {
+				return err
 			}
 
 			cliui.Errorf(inv.Stderr, "Found %d scaletest users\n", len(users))
@@ -947,6 +901,167 @@ func (r *RootCmd) scaletestCreateWorkspaces() *clibase.Cmd {
 	return cmd
 }
 
+func (r *RootCmd) scaletestTrafficGen() *clibase.Cmd {
+	var (
+		duration        time.Duration
+		bps             int64
+		client          = new(codersdk.Client)
+		tracingFlags    = &scaletestTracingFlags{}
+		strategy        = &scaletestStrategyFlags{}
+		cleanupStrategy = &scaletestStrategyFlags{cleanup: true}
+		output          = &scaletestOutputFlags{}
+	)
+
+	cmd := &clibase.Cmd{
+		Use:    "trafficgen",
+		Hidden: true,
+		Short:  "Generate traffic to scaletest workspaces",
+		Middleware: clibase.Chain(
+			r.InitClient(client),
+		),
+		Handler: func(inv *clibase.Invocation) error {
+			ctx := inv.Context()
+
+			// Bypass rate limiting
+			client.HTTPClient = &http.Client{
+				Transport: &headerTransport{
+					transport: http.DefaultTransport,
+					header: map[string][]string{
+						codersdk.BypassRatelimitHeader: {"true"},
+					},
+				},
+			}
+
+			workspaces, err := getScaletestWorkspaces(inv.Context(), client)
+			if err != nil {
+				return err
+			}
+
+			if len(workspaces) == 0 {
+				return xerrors.Errorf("no scaletest workspaces exist")
+			}
+
+			tracerProvider, closeTracing, tracingEnabled, err := tracingFlags.provider(ctx)
+			if err != nil {
+				return xerrors.Errorf("create tracer provider: %w", err)
+			}
+			defer func() {
+				// Allow time for traces to flush even if command context is
+				// canceled.
+				ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+				defer cancel()
+				_ = closeTracing(ctx)
+			}()
+			tracer := tracerProvider.Tracer(scaletestTracerName)
+
+			outputs, err := output.parse()
+			if err != nil {
+				return xerrors.Errorf("could not parse --output flags")
+			}
+
+			th := harness.NewTestHarness(strategy.toStrategy(), cleanupStrategy.toStrategy())
+			for idx, ws := range workspaces {
+				var (
+					agentID uuid.UUID
+					name    = "trafficgen"
+					id      = strconv.Itoa(idx)
+				)
+
+				for _, res := range ws.LatestBuild.Resources {
+					if len(res.Agents) == 0 {
+						continue
+					}
+					agentID = res.Agents[0].ID
+				}
+
+				if agentID == uuid.Nil {
+					_, _ = fmt.Fprintf(inv.Stderr, "WARN: skipping workspace %s: no agent\n", ws.Name)
+					continue
+				}
+
+				// Setup our workspace agent connection.
+				config := trafficgen.Config{
+					AgentID:        agentID,
+					BytesPerSecond: bps,
+					Duration:       duration,
+					TicksPerSecond: 10,
+				}
+
+				if err := config.Validate(); err != nil {
+					return xerrors.Errorf("validate config: %w", err)
+				}
+				var runner harness.Runnable = trafficgen.NewRunner(client, config)
+				if tracingEnabled {
+					runner = &runnableTraceWrapper{
+						tracer:   tracer,
+						spanName: fmt.Sprintf("%s/%s", name, id),
+						runner:   runner,
+					}
+				}
+
+				th.AddRun(name, id, runner)
+			}
+
+			_, _ = fmt.Fprintln(inv.Stderr, "Running load test...")
+			testCtx, testCancel := strategy.toContext(ctx)
+			defer testCancel()
+			err = th.Run(testCtx)
+			if err != nil {
+				return xerrors.Errorf("run test harness (harness failure, not a test failure): %w", err)
+			}
+
+			res := th.Results()
+			for _, o := range outputs {
+				err = o.write(res, inv.Stdout)
+				if err != nil {
+					return xerrors.Errorf("write output %q to %q: %w", o.format, o.path, err)
+				}
+			}
+
+			// Upload traces.
+			if tracingEnabled {
+				_, _ = fmt.Fprintln(inv.Stderr, "\nUploading traces...")
+				ctx, cancel := context.WithTimeout(ctx, 1*time.Minute)
+				defer cancel()
+				err := closeTracing(ctx)
+				if err != nil {
+					_, _ = fmt.Fprintf(inv.Stderr, "\nError uploading traces: %+v\n", err)
+				}
+			}
+
+			if res.TotalFail > 0 {
+				return xerrors.New("load test failed, see above for more details")
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Options = []clibase.Option{
+		{
+			Flag:        "duration",
+			Env:         "CODER_SCALETEST_TRAFFICGEN_DURATION",
+			Default:     "10s",
+			Description: "How long to generate traffic for.",
+			Value:       clibase.DurationOf(&duration),
+		},
+		{
+			Flag:        "bps",
+			Env:         "CODER_SCALETEST_TRAFFICGEN_BPS",
+			Default:     "1024",
+			Description: "How much traffic to generate in bytes per second.",
+			Value:       clibase.Int64Of(&bps),
+		},
+	}
+
+	tracingFlags.attach(&cmd.Options)
+	strategy.attach(&cmd.Options)
+	cleanupStrategy.attach(&cmd.Options)
+	output.attach(&cmd.Options)
+
+	return cmd
+}
+
 type runnableTraceWrapper struct {
 	tracer   trace.Tracer
 	spanName string
@@ -1023,3 +1138,72 @@ func isScaleTestWorkspace(workspace codersdk.Workspace) bool {
 	return strings.HasPrefix(workspace.OwnerName, "scaletest-") ||
 		strings.HasPrefix(workspace.Name, "scaletest-")
 }
+
+func getScaletestWorkspaces(ctx context.Context, client *codersdk.Client) ([]codersdk.Workspace, error) {
+	var (
+		pageNumber = 0
+		limit      = 100
+		workspaces []codersdk.Workspace
+	)
+
+	for {
+		page, err := client.Workspaces(ctx, codersdk.WorkspaceFilter{
+			Name:   "scaletest-",
+			Offset: pageNumber * limit,
+			Limit:  limit,
+		})
+		if err != nil {
+			return nil, xerrors.Errorf("fetch scaletest workspaces page %d: %w", pageNumber, err)
+		}
+
+		pageNumber++
+		if len(page.Workspaces) == 0 {
+			break
+		}
+
+		pageWorkspaces := make([]codersdk.Workspace, 0, len(page.Workspaces))
+		for _, w := range page.Workspaces {
+			if isScaleTestWorkspace(w) {
+				pageWorkspaces = append(pageWorkspaces, w)
+			}
+		}
+		workspaces = append(workspaces, pageWorkspaces...)
+	}
+	return workspaces, nil
+}
+
+func getScaletestUsers(ctx context.Context, client *codersdk.Client) ([]codersdk.User, error) {
+	var (
+		pageNumber = 0
+		limit      = 100
+		users      []codersdk.User
+	)
+
+	for {
+		page, err := client.Users(ctx, codersdk.UsersRequest{
+			Search: "scaletest-",
+			Pagination: codersdk.Pagination{
+				Offset: pageNumber * limit,
+				Limit:  limit,
+			},
+		})
+		if err != nil {
+			return nil, xerrors.Errorf("fetch scaletest users page %d: %w", pageNumber, err)
+		}
+
+		pageNumber++
+		if len(page.Users) == 0 {
+			break
+		}
+
+		pageUsers := make([]codersdk.User, 0, len(page.Users))
+		for _, u := range page.Users {
+			if isScaleTestUser(u) {
+				pageUsers = append(pageUsers, u)
+			}
+		}
+		users = append(users, pageUsers...)
+	}
+
+	return users, nil
+}