coder · coadler · Jun 16, 2020 · Jun 12, 2020
diff --git a/cmd/coder/shell.go b/cmd/coder/shell.go
@@ -16,6 +16,7 @@ import (
 	"go.coder.com/cli"
 	"go.coder.com/flog"
 
+	"cdr.dev/coder-cli/internal/activity"
 	"cdr.dev/wsep"
 )
 
@@ -145,7 +146,10 @@ func runCommand(ctx context.Context, envName string, command string, args []stri
 	go func() {
 		stdin := process.Stdin()
 		defer stdin.Close()
-		_, err := io.Copy(stdin, os.Stdin)
+
+		ap := activity.NewPusher(entClient, env.ID, sshActivityName)
+		wr := ap.Writer(stdin)
+		_, err := io.Copy(wr, os.Stdin)
 		if err != nil {
 			cancel()
 		}
@@ -168,3 +172,5 @@ func runCommand(ctx context.Context, envName string, command string, args []stri
 	}
 	return err
 }
+
+const sshActivityName = "ssh"
diff --git a/cmd/coder/sync.go b/cmd/coder/sync.go
@@ -69,11 +69,11 @@ func (cmd *syncCmd) Run(fl *pflag.FlagSet) {
 	}
 
 	s := sync.Sync{
-		Init:        cmd.init,
-		Environment: env,
-		RemoteDir:   remoteDir,
-		LocalDir:    absLocal,
-		Client:      entClient,
+		Init:      cmd.init,
+		Env:       env,
+		RemoteDir: remoteDir,
+		LocalDir:  absLocal,
+		Client:    entClient,
 	}
 	for err == nil || err == sync.ErrRestartSync {
 		err = s.Run()

diff --git a/cmd/coder/url.go b/cmd/coder/url.go
@@ -11,8 +11,7 @@ import (
 	"go.coder.com/flog"
 )
 
-type urlCmd struct {
-}
+type urlCmd struct{}
 
 type DevURL struct {
 	Url string `json:"url"`

diff --git a/internal/activity/pusher.go b/internal/activity/pusher.go
@@ -0,0 +1,41 @@
+package activity
+
+import (
+	"time"
+
+	"cdr.dev/coder-cli/internal/entclient"
+	"go.coder.com/flog"
+	"golang.org/x/time/rate"
+)
+
+const pushInterval = time.Minute
+
+// Pusher pushes activity metrics no more than once per pushInterval. Pushes
+// within the same interval are a no-op.
+type Pusher struct {
+	envID  string
+	source string
+
+	client *entclient.Client
+	rate   *rate.Limiter
+}
+
+func NewPusher(c *entclient.Client, envID, source string) *Pusher {
+	return &Pusher{
+		envID:  envID,
+		source: source,
+		client: c,
+		rate:   rate.NewLimiter(rate.Every(pushInterval), 1),
+	}
+}
+
+func (p *Pusher) Push() {
+	if !p.rate.Allow() {
+		return
+	}
+
+	err := p.client.PushActivity(p.source, p.envID)
+	if err != nil {
+		flog.Error("push activity: %s", err.Error())
+	}
+}
diff --git a/internal/activity/writer.go b/internal/activity/writer.go
@@ -0,0 +1,17 @@
+package activity
+
+import "io"
+
+type activityWriter struct {
+	p  *Pusher
+	wr io.Writer
+}
+
+func (w *activityWriter) Write(p []byte) (n int, err error) {
+	w.p.Push()
+	return w.wr.Write(p)
+}
+
+func (p *Pusher) Writer(wr io.Writer) io.Writer {
+	return &activityWriter{p: p, wr: wr}
+}
diff --git a/internal/entclient/activity.go b/internal/entclient/activity.go
@@ -0,0 +1,19 @@
+package entclient
+
+import "net/http"
+
+func (c Client) PushActivity(source string, envID string) error {
+	res, err := c.request("POST", "/api/metrics/usage/push", map[string]string{
+		"source":         source,
+		"environment_id": envID,
+	})
+	if err != nil {
+		return err
+	}
+
+	if res.StatusCode != http.StatusOK {
+		return bodyError(res)
+	}
+
+	return nil
+}
diff --git a/internal/sync/sync.go b/internal/sync/sync.go
@@ -21,6 +21,7 @@ import (
 
 	"go.coder.com/flog"
 
+	"cdr.dev/coder-cli/internal/activity"
 	"cdr.dev/coder-cli/internal/entclient"
 	"cdr.dev/wsep"
 )
@@ -33,8 +34,11 @@ type Sync struct {
 	LocalDir string
 	// RemoteDir is an absolute path.
 	RemoteDir string
-	entclient.Environment
-	*entclient.Client
+	// DisableMetrics disables activity metric pushing.
+	DisableMetrics bool
+
+	Env    entclient.Environment
+	Client *entclient.Client
 }
 
 func (s Sync) syncPaths(delete bool, local, remote string) error {
@@ -43,7 +47,7 @@ func (s Sync) syncPaths(delete bool, local, remote string) error {
 	args := []string{"-zz",
 		"-a",
 		"--delete",
-		"-e", self + " sh", local, s.Environment.Name + ":" + remote,
+		"-e", self + " sh", local, s.Env.Name + ":" + remote,
 	}
 	if delete {
 		args = append([]string{"--delete"}, args...)
@@ -68,7 +72,7 @@ func (s Sync) syncPaths(delete bool, local, remote string) error {
 }
 
 func (s Sync) remoteRm(ctx context.Context, remote string) error {
-	conn, err := s.Client.DialWsep(ctx, s.Environment)
+	conn, err := s.Client.DialWsep(ctx, s.Env)
 	if err != nil {
 		return err
 	}
@@ -229,13 +233,16 @@ func (s Sync) workEventGroup(evs []timedEvent) {
 }
 
 const (
-	// maxinflightInotify sets the maximum number of inotifies before the sync just restarts.
-	// Syncing a large amount of small files (e.g .git or node_modules) is impossible to do performantly
-	// with individual rsyncs.
+	// maxinflightInotify sets the maximum number of inotifies before the
+	// sync just restarts. Syncing a large amount of small files (e.g .git
+	// or node_modules) is impossible to do performantly with individual
+	// rsyncs.
 	maxInflightInotify = 8
 	maxEventDelay      = time.Second * 7
-	// maxAcceptableDispatch is the maximum amount of time before an event should begin its journey to the server.
-	// This sets a lower bound for perceivable latency, but the higher it is, the better the optimization.
+	// maxAcceptableDispatch is the maximum amount of time before an event
+	// should begin its journey to the server. This sets a lower bound for
+	// perceivable latency, but the higher it is, the better the
+	// optimization.
 	maxAcceptableDispatch = time.Millisecond * 50
 )
 
@@ -245,13 +252,17 @@ const (
 func (s Sync) Run() error {
 	events := make(chan notify.EventInfo, maxInflightInotify)
 	// Set up a recursive watch.
-	// We do this before the initial sync so we can capture any changes that may have happened during sync.
+	// We do this before the initial sync so we can capture any changes
+	// that may have happened during sync.
 	err := notify.Watch(path.Join(s.LocalDir, "..."), events, notify.All)
 	if err != nil {
 		return xerrors.Errorf("create watch: %w", err)
 	}
 	defer notify.Stop(events)
 
+	ap := activity.NewPusher(s.Client, s.Env.ID, activityName)
+	ap.Push()
+
 	setConsoleTitle("⏳ syncing project")
 	err = s.initSync()
 	if err != nil {
@@ -265,7 +276,8 @@ func (s Sync) Run() error {
 	flog.Info("watching %s for changes", s.LocalDir)
 
 	var droppedEvents uint64
-	// Timed events lets us track how long each individual file takes to update.
+	// Timed events lets us track how long each individual file takes to
+	// update.
 	timedEvents := make(chan timedEvent, cap(events))
 	go func() {
 		defer close(timedEvents)
@@ -309,6 +321,9 @@ func (s Sync) Run() error {
 			}
 			s.workEventGroup(eventGroup)
 			eventGroup = eventGroup[:0]
+			ap.Push()
 		}
 	}
 }
+
+const activityName = "sync"