Add template build time stats (#4557)

- Expose time in Template pages
- Show progress bar when building a workspace

coderd/database/databasefake/databasefake.go

@@ -235,6 +235,35 @@ func (q *fakeQuerier) GetTemplateDAUs(_ context.Context, templateID uuid.UUID) (
 	return rs, nil
 }
 
+func (q *fakeQuerier) GetTemplateAverageBuildTime(ctx context.Context, arg database.GetTemplateAverageBuildTimeParams) (float64, error) {
+	var times []float64
+	for _, wb := range q.workspaceBuilds {
+		if wb.Transition != database.WorkspaceTransitionStart {
+			continue
+		}
+		version, err := q.GetTemplateVersionByID(ctx, wb.TemplateVersionID)
+		if err != nil {
+			return -1, err
+		}
+		if version.TemplateID != arg.TemplateID {
+			continue
+		}
+
+		job, err := q.GetProvisionerJobByID(ctx, wb.JobID)
+		if err != nil {
+			return -1, err
+		}
+		if job.CompletedAt.Valid {
+			times = append(times, job.CompletedAt.Time.Sub(job.StartedAt.Time).Seconds())
+		}
+	}
+	sort.Float64s(times)
+	if len(times) == 0 {
+		return -1, nil
+	}
+	return times[len(times)/2], nil
+}
+
 func (q *fakeQuerier) ParameterValue(_ context.Context, id uuid.UUID) (database.ParameterValue, error) {
 	q.mutex.Lock()
 	defer q.mutex.Unlock()

coderd/database/querier.go

@@ -67,6 +67,7 @@ type sqlcQuerier interface {
 	GetProvisionerJobsByIDs(ctx context.Context, ids []uuid.UUID) ([]ProvisionerJob, error)
 	GetProvisionerJobsCreatedAfter(ctx context.Context, createdAt time.Time) ([]ProvisionerJob, error)
 	GetProvisionerLogsByIDBetween(ctx context.Context, arg GetProvisionerLogsByIDBetweenParams) ([]ProvisionerJobLog, error)
+	GetTemplateAverageBuildTime(ctx context.Context, arg GetTemplateAverageBuildTimeParams) (float64, error)
 	GetTemplateByID(ctx context.Context, id uuid.UUID) (Template, error)
 	GetTemplateByOrganizationAndName(ctx context.Context, arg GetTemplateByOrganizationAndNameParams) (Template, error)
 	GetTemplateDAUs(ctx context.Context, templateID uuid.UUID) ([]GetTemplateDAUsRow, error)

coderd/database/queries.sql.go

@@ -2597,6 +2597,42 @@ func (q *sqlQuerier) InsertDeploymentID(ctx context.Context, value string) error
 	return err
 }
 
+const getTemplateAverageBuildTime = `-- name: GetTemplateAverageBuildTime :one
+WITH build_times AS (
+SELECT
+	EXTRACT(EPOCH FROM (pj.completed_at - pj.started_at))::FLOAT AS exec_time_sec
+FROM
+	workspace_builds
+JOIN template_versions ON
+	workspace_builds.template_version_id = template_versions.id
+JOIN provisioner_jobs pj ON
+	workspace_builds.job_id = pj.id
+WHERE
+	template_versions.template_id = $1 AND
+		(workspace_builds.transition = 'start') AND
+		(pj.completed_at IS NOT NULL) AND (pj.started_at IS NOT NULL) AND
+		(pj.started_at > $2) AND
+		(pj.canceled_at IS NULL) AND
+		((pj.error IS NULL) OR (pj.error = ''))
+ORDER BY
+	workspace_builds.created_at DESC
+)
+SELECT coalesce((PERCENTILE_DISC(0.5) WITHIN GROUP(ORDER BY exec_time_sec)), -1)::FLOAT
+FROM build_times
+`
+
+type GetTemplateAverageBuildTimeParams struct {
+	TemplateID uuid.NullUUID `db:"template_id" json:"template_id"`
+	StartTime  sql.NullTime  `db:"start_time" json:"start_time"`
+}
+
+func (q *sqlQuerier) GetTemplateAverageBuildTime(ctx context.Context, arg GetTemplateAverageBuildTimeParams) (float64, error) {
+	row := q.db.QueryRowContext(ctx, getTemplateAverageBuildTime, arg.TemplateID, arg.StartTime)
+	var column_1 float64
+	err := row.Scan(&column_1)
+	return column_1, err
+}
+
 const getTemplateByID = `-- name: GetTemplateByID :one
 SELECT
 	id, created_at, updated_at, organization_id, deleted, name, provisioner, active_version_id, description, max_ttl, min_autostart_interval, created_by, icon, user_acl, group_acl

coderd/database/queries/templates.sql

@@ -105,3 +105,27 @@ WHERE
 	id = $1
 RETURNING
 	*;
+
+-- name: GetTemplateAverageBuildTime :one
+WITH build_times AS (
+SELECT
+	EXTRACT(EPOCH FROM (pj.completed_at - pj.started_at))::FLOAT AS exec_time_sec
+FROM
+	workspace_builds
+JOIN template_versions ON
+	workspace_builds.template_version_id = template_versions.id
+JOIN provisioner_jobs pj ON
+	workspace_builds.job_id = pj.id
+WHERE
+	template_versions.template_id = @template_id AND
+		(workspace_builds.transition = 'start') AND
+		(pj.completed_at IS NOT NULL) AND (pj.started_at IS NOT NULL) AND
+		(pj.started_at > @start_time) AND
+		(pj.canceled_at IS NULL) AND
+		((pj.error IS NULL) OR (pj.error = ''))
+ORDER BY
+	workspace_builds.created_at DESC
+)
+SELECT coalesce((PERCENTILE_DISC(0.5) WITHIN GROUP(ORDER BY exec_time_sec)), -1)::FLOAT
+FROM build_times
+;