feat(site): Add deployment-wide DAU chart (#5810)

coderd/database/databasefake/databasefake.go

@@ -323,6 +323,42 @@ func (q *fakeQuerier) GetTemplateDAUs(_ context.Context, templateID uuid.UUID) (
 	return rs, nil
 }
 
+func (q *fakeQuerier) GetDeploymentDAUs(_ context.Context) ([]database.GetDeploymentDAUsRow, error) {
+	q.mutex.Lock()
+	defer q.mutex.Unlock()
+
+	seens := make(map[time.Time]map[uuid.UUID]struct{})
+
+	for _, as := range q.agentStats {
+		date := as.CreatedAt.Truncate(time.Hour * 24)
+
+		dateEntry := seens[date]
+		if dateEntry == nil {
+			dateEntry = make(map[uuid.UUID]struct{})
+		}
+		dateEntry[as.UserID] = struct{}{}
+		seens[date] = dateEntry
+	}
+
+	seenKeys := maps.Keys(seens)
+	sort.Slice(seenKeys, func(i, j int) bool {
+		return seenKeys[i].Before(seenKeys[j])
+	})
+
+	var rs []database.GetDeploymentDAUsRow
+	for _, key := range seenKeys {
+		ids := seens[key]
+		for id := range ids {
+			rs = append(rs, database.GetDeploymentDAUsRow{
+				Date:   key,
+				UserID: id,
+			})
+		}
+	}
+
+	return rs, nil
+}
+
 func (q *fakeQuerier) GetTemplateAverageBuildTime(ctx context.Context, arg database.GetTemplateAverageBuildTimeParams) (database.GetTemplateAverageBuildTimeRow, error) {
 	if err := validateDatabaseType(arg); err != nil {
 		return database.GetTemplateAverageBuildTimeRow{}, err

coderd/database/querier.go

@@ -40,6 +40,7 @@ type sqlcQuerier interface {
 	// are included.
 	GetAuthorizationUserRoles(ctx context.Context, userID uuid.UUID) (GetAuthorizationUserRolesRow, error)
 	GetDERPMeshKey(ctx context.Context) (string, error)
+	GetDeploymentDAUs(ctx context.Context) ([]GetDeploymentDAUsRow, error)
 	GetDeploymentID(ctx context.Context) (string, error)
 	GetFileByHashAndCreator(ctx context.Context, arg GetFileByHashAndCreatorParams) (File, error)
 	GetFileByID(ctx context.Context, id uuid.UUID) (File, error)

coderd/database/queries.sql.go

@@ -25,6 +25,46 @@ func (q *sqlQuerier) DeleteOldAgentStats(ctx context.Context) error {
 	return err
 }
 
+const getDeploymentDAUs = `-- name: GetDeploymentDAUs :many
+SELECT
+	(created_at at TIME ZONE 'UTC')::date as date,
+	user_id
+FROM
+	agent_stats
+GROUP BY
+	date, user_id
+ORDER BY
+	date ASC
+`
+
+type GetDeploymentDAUsRow struct {
+	Date   time.Time `db:"date" json:"date"`
+	UserID uuid.UUID `db:"user_id" json:"user_id"`
+}
+
+func (q *sqlQuerier) GetDeploymentDAUs(ctx context.Context) ([]GetDeploymentDAUsRow, error) {
+	rows, err := q.db.QueryContext(ctx, getDeploymentDAUs)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetDeploymentDAUsRow
+	for rows.Next() {
+		var i GetDeploymentDAUsRow
+		if err := rows.Scan(&i.Date, &i.UserID); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const getTemplateDAUs = `-- name: GetTemplateDAUs :many
 SELECT
 	(created_at at TIME ZONE 'UTC')::date as date,

coderd/database/queries/agentstats.sql

@@ -25,5 +25,16 @@ GROUP BY
 ORDER BY
 	date ASC;
 
+-- name: GetDeploymentDAUs :many
+SELECT
+	(created_at at TIME ZONE 'UTC')::date as date,
+	user_id
+FROM
+	agent_stats
+GROUP BY
+	date, user_id
+ORDER BY
+	date ASC;
+
 -- name: DeleteOldAgentStats :exec
 DELETE FROM agent_stats WHERE created_at < NOW() - INTERVAL '30 days';