*: add api to query last run per group

internal/services/gateway/api/run.go

@@ -302,6 +302,7 @@ func (h *RunsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	phaseFilter := q["phase"]
 	groups := q["group"]
 	changeGroups := q["changegroup"]
+	_, lastRun := q["lastrun"]
 
 	limitS := q.Get("limit")
 	limit := DefaultRunsLimit
@@ -327,7 +328,7 @@ func (h *RunsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	start := q.Get("start")
 
-	runsResp, resp, err := h.runserviceClient.GetRuns(ctx, phaseFilter, groups, changeGroups, start, limit, asc)
+	runsResp, resp, err := h.runserviceClient.GetRuns(ctx, phaseFilter, groups, lastRun, changeGroups, start, limit, asc)
 	if err != nil {
 		if resp != nil && resp.StatusCode == http.StatusNotFound {
 			http.Error(w, err.Error(), http.StatusNotFound)

internal/services/runservice/scheduler/api/api.go

@@ -361,6 +361,7 @@ func (h *RunsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	changeGroups := query["changegroup"]
 	groups := query["group"]
+	_, lastRun := query["lastrun"]
 
 	limitS := query.Get("limit")
 	limit := DefaultRunsLimit
@@ -406,7 +407,7 @@ func (h *RunsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	err = h.readDB.Do(func(tx *db.Tx) error {
 		var err error
-		runs, err = h.readDB.GetRuns(tx, groups, phaseFilter, start, limit, sortOrder)
+		runs, err = h.readDB.GetRuns(tx, groups, lastRun, phaseFilter, start, limit, sortOrder)
 		if err != nil {
 			h.log.Errorf("err: %+v", err)
 			return err

internal/services/runservice/scheduler/api/client.go

@@ -143,7 +143,7 @@ func (c *Client) GetArchive(ctx context.Context, taskID string, step int) (*http
 	return c.getResponse(ctx, "GET", "/executor/archives", q, nil, nil)
 }
 
-func (c *Client) GetRuns(ctx context.Context, phaseFilter, groups, changeGroups []string, start string, limit int, asc bool) (*GetRunsResponse, *http.Response, error) {
+func (c *Client) GetRuns(ctx context.Context, phaseFilter, groups []string, lastRun bool, changeGroups []string, start string, limit int, asc bool) (*GetRunsResponse, *http.Response, error) {
 	q := url.Values{}
 	for _, phase := range phaseFilter {
 		q.Add("phase", phase)
@@ -151,6 +151,9 @@ func (c *Client) GetRuns(ctx context.Context, phaseFilter, groups, changeGroups
 	for _, group := range groups {
 		q.Add("group", group)
 	}
+	if lastRun {
+		q.Add("lastrun", "")
+	}
 	for _, changeGroup := range changeGroups {
 		q.Add("changegroup", changeGroup)
 	}
@@ -170,19 +173,19 @@ func (c *Client) GetRuns(ctx context.Context, phaseFilter, groups, changeGroups
 }
 
 func (c *Client) GetQueuedRuns(ctx context.Context, start string, limit int) (*GetRunsResponse, *http.Response, error) {
-	return c.GetRuns(ctx, []string{"queued"}, []string{"."}, nil, start, limit, true)
+	return c.GetRuns(ctx, []string{"queued"}, []string{}, false, nil, start, limit, true)
 }
 
 func (c *Client) GetGroupQueuedRuns(ctx context.Context, group string, limit int, changeGroups []string) (*GetRunsResponse, *http.Response, error) {
-	return c.GetRuns(ctx, []string{"queued"}, []string{group}, changeGroups, "", limit, false)
+	return c.GetRuns(ctx, []string{"queued"}, []string{group}, false, changeGroups, "", limit, false)
 }
 
 func (c *Client) GetGroupRunningRuns(ctx context.Context, group string, limit int, changeGroups []string) (*GetRunsResponse, *http.Response, error) {
-	return c.GetRuns(ctx, []string{"running"}, []string{group}, changeGroups, "", limit, false)
+	return c.GetRuns(ctx, []string{"running"}, []string{group}, false, changeGroups, "", limit, false)
 }
 
 func (c *Client) GetGroupFirstQueuedRuns(ctx context.Context, group string, changeGroups []string) (*GetRunsResponse, *http.Response, error) {
-	return c.GetRuns(ctx, []string{"queued"}, []string{group}, changeGroups, "", 1, true)
+	return c.GetRuns(ctx, []string{"queued"}, []string{group}, false, changeGroups, "", 1, true)
 }
 
 func (c *Client) CreateRun(ctx context.Context, req *RunCreateRequest) (*http.Response, error) {

internal/services/runservice/scheduler/readdb/readdb.go

@@ -349,14 +349,14 @@ func (r *ReadDB) Run(ctx context.Context) {
 
 func (r *ReadDB) HandleEvents(ctx context.Context) error {
 	var revision int64
-	var lastRuns []*types.Run
+	var lastRuns []*RunData
 	err := r.rdb.Do(func(tx *db.Tx) error {
 		var err error
 		revision, err = r.getRevision(tx)
 		if err != nil {
 			return err
 		}
-		lastRuns, err = r.GetActiveRuns(tx, nil, nil, "", 1, types.SortOrderDesc)
+		lastRuns, err = r.GetActiveRuns(tx, nil, true, nil, "", 1, types.SortOrderDesc)
 		return err
 	})
 	if err != nil {
@@ -370,7 +370,7 @@ func (r *ReadDB) HandleEvents(ctx context.Context) error {
 
 	var lastRun *types.Run
 	if len(lastRuns) > 0 {
-		lastRun = lastRuns[0]
+		lastRun = lastRuns[0].Run
 	}
 	if lastRun != nil {
 		if runSequence == nil {
@@ -685,8 +685,8 @@ func (r *ReadDB) GetChangeGroupsUpdateTokens(tx *db.Tx, groups []string) (*types
 	return &types.ChangeGroupsUpdateToken{CurRevision: revision, ChangeGroupsRevisions: changeGroupsRevisions}, nil
 }
 
-func (r *ReadDB) GetActiveRuns(tx *db.Tx, groups []string, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*types.Run, error) {
+func (r *ReadDB) GetActiveRuns(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*RunData, error) {
-	return r.getRunsFilteredActive(tx, groups, phaseFilter, startRunID, limit, sortOrder)
+	return r.getRunsFilteredActive(tx, groups, lastRun, phaseFilter, startRunID, limit, sortOrder)
 }
 
 func (r *ReadDB) PrefetchRuns(tx *db.Tx, groups []string, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) error {
@@ -712,7 +712,7 @@ func (r *ReadDB) PrefetchRuns(tx *db.Tx, groups []string, phaseFilter []types.Ru
 	return nil
 }
 
-func (r *ReadDB) GetRuns(tx *db.Tx, groups []string, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*types.Run, error) {
+func (r *ReadDB) GetRuns(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*types.Run, error) {
 	useLTS := false
 	for _, phase := range phaseFilter {
 		if phase == types.RunPhaseFinished {
@@ -723,27 +723,44 @@ func (r *ReadDB) GetRuns(tx *db.Tx, groups []string, phaseFilter []types.RunPhas
 		useLTS = true
 	}
 
-	runs, err := r.getRunsFilteredActive(tx, groups, phaseFilter, startRunID, limit, sortOrder)
+	runDataRDB, err := r.getRunsFilteredActive(tx, groups, lastRun, phaseFilter, startRunID, limit, sortOrder)
 	if err != nil {
 		return nil, err
 	}
-	if !useLTS {
+	lastRunsMap := map[string]*RunData{}
-		return runs, err
+	runsMap := map[string]*RunData{}
-	}
+	for _, r := range runDataRDB {
-
-	// skip if the phase requested is not finished
-	runsltsIDs, err := r.getRunsFilteredLTS(tx, groups, startRunID, limit, sortOrder)
-	if err != nil {
-		return nil, err
-	}
-
-	runsMap := map[string]*types.Run{}
-	for _, r := range runs {
 		runsMap[r.ID] = r
+		lastRunsMap[r.GroupPath] = r
+	}
+
+	if useLTS {
+		// skip if the phase requested is not finished
+		runDataLTS, err := r.GetRunsFilteredLTS(tx, groups, lastRun, phaseFilter, startRunID, limit, sortOrder)
+		if err != nil {
+			return nil, err
+		}
+
+		for _, rd := range runDataLTS {
+			if lastRun {
+				if lr, ok := lastRunsMap[rd.GroupPath]; ok {
+					switch sortOrder {
+					case types.SortOrderAsc:
+						if rd.ID < lr.ID {
+							lastRunsMap[rd.GroupPath] = rd
+						}
+					case types.SortOrderDesc:
+						if rd.ID > lr.ID {
+							lastRunsMap[rd.GroupPath] = rd
+						}
+					}
+				} else {
+					lastRunsMap[rd.GroupPath] = rd
+					runsMap[rd.ID] = rd
+				}
+			} else {
+				runsMap[rd.ID] = rd
 			}
-	for _, runID := range runsltsIDs {
-		if _, ok := runsMap[runID]; !ok {
-			runsMap[runID] = nil
 		}
 	}
 
@@ -767,14 +784,14 @@ func (r *ReadDB) GetRuns(tx *db.Tx, groups []string, phaseFilter []types.RunPhas
 		}
 		count++
 
-		run := runsMap[runID]
+		rd := runsMap[runID]
-		if run != nil {
+		if rd.Run != nil {
-			aruns = append(aruns, run)
+			aruns = append(aruns, rd.Run)
 			continue
 		}
 
 		// get run from lts
-		run, err = store.LTSGetRun(r.wal, runID)
+		run, err := store.LTSGetRun(r.wal, runID)
 		if err != nil {
 			return nil, errors.WithStack(err)
 		}
@@ -785,13 +802,13 @@ func (r *ReadDB) GetRuns(tx *db.Tx, groups []string, phaseFilter []types.RunPhas
 	return aruns, nil
 }
 
-func (r *ReadDB) getRunsFilteredQuery(phaseFilter []types.RunPhase, groups []string, startRunID string, limit int, sortOrder types.SortOrder, lts bool) sq.SelectBuilder {
+func (r *ReadDB) getRunsFilteredQuery(phaseFilter []types.RunPhase, groups []string, lastRun bool, startRunID string, limit int, sortOrder types.SortOrder, lts bool) sq.SelectBuilder {
 	runt := "run"
-	runlabelt := "rungroup"
+	rungroupt := "rungroup"
 	fields := []string{"data"}
 	if lts {
 		runt = "run_lts"
-		runlabelt = "rungroup_lts"
+		rungroupt = "rungroup_lts"
 		fields = []string{"id"}
 	}
 
@@ -818,20 +835,28 @@ func (r *ReadDB) getRunsFilteredQuery(phaseFilter []types.RunPhase, groups []str
 		s = s.Limit(uint64(limit))
 	}
 
+	s = s.Join(fmt.Sprintf("%s as rungroup on rungroup.id = run.id", rungroupt))
 	if len(groups) > 0 {
-		s = s.Join(fmt.Sprintf("%s as rungroup on rungroup.runid = run.id", runlabelt))
 		cond := sq.Or{}
-		for _, group := range groups {
+		for _, groupPath := range groups {
-			cond = append(cond, sq.Eq{"rungroup.grouppath": group})
+			// add ending slash to distinguish between final group (i.e project/projectid/branch/feature and project/projectid/branch/feature02)
+			if !strings.HasSuffix(groupPath, "/") {
+				groupPath += "/"
+			}
+
+			cond = append(cond, sq.Like{"run.grouppath": groupPath + "%"})
 		}
 		s = s.Where(sq.Or{cond})
+		if lastRun {
+			s = s.GroupBy("run.grouppath")
+		}
 	}
 
 	return s
 }
 
-func (r *ReadDB) getRunsFilteredActive(tx *db.Tx, groups []string, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*types.Run, error) {
+func (r *ReadDB) getRunsFilteredActive(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*RunData, error) {
-	s := r.getRunsFilteredQuery(phaseFilter, groups, startRunID, limit, sortOrder, false)
+	s := r.getRunsFilteredQuery(phaseFilter, groups, lastRun, startRunID, limit, sortOrder, false)
 
 	q, args, err := s.ToSql()
 	r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
@@ -842,8 +867,8 @@ func (r *ReadDB) getRunsFilteredActive(tx *db.Tx, groups []string, phaseFilter [
 	return fetchRuns(tx, q, args...)
 }
 
-func (r *ReadDB) getRunsFilteredLTS(tx *db.Tx, groups []string, startRunID string, limit int, sortOrder types.SortOrder) ([]string, error) {
+func (r *ReadDB) GetRunsFilteredLTS(tx *db.Tx, groups []string, lastRun bool, phaseFilter []types.RunPhase, startRunID string, limit int, sortOrder types.SortOrder) ([]*RunData, error) {
-	s := r.getRunsFilteredQuery(nil, groups, startRunID, limit, sortOrder, true)
+	s := r.getRunsFilteredQuery(phaseFilter, groups, lastRun, startRunID, limit, sortOrder, true)
 
 	q, args, err := s.ToSql()
 	r.log.Debugf("q: %s, args: %s", q, util.Dump(args))
@@ -851,7 +876,7 @@ func (r *ReadDB) getRunsFilteredLTS(tx *db.Tx, groups []string, startRunID strin
 		return nil, errors.Wrap(err, "failed to build query")
 	}
 
-	return fetchRunsLTS(tx, q, args...)
+	return fetchRuns(tx, q, args...)
 }
 
 func (r *ReadDB) GetRun(runID string) (*types.Run, error) {
@@ -882,10 +907,17 @@ func (r *ReadDB) getRun(tx *db.Tx, runID string) (*types.Run, error) {
 	if len(runs) == 0 {
 		return nil, nil
 	}
-	return runs[0], nil
+	return runs[0].Run, nil
 }
 
-func fetchRuns(tx *db.Tx, q string, args ...interface{}) ([]*types.Run, error) {
+type RunData struct {
+	ID        string
+	GroupPath string
+	Phase     string
+	Run       *types.Run
+}
+
+func fetchRuns(tx *db.Tx, q string, args ...interface{}) ([]*RunData, error) {
 	rows, err := tx.Query(q, args...)
 	if err != nil {
 		return nil, err
@@ -894,38 +926,23 @@ func fetchRuns(tx *db.Tx, q string, args ...interface{}) ([]*types.Run, error) {
 	return scanRuns(rows)
 }
 
-func fetchRunsLTS(tx *db.Tx, q string, args ...interface{}) ([]string, error) {
+func scanRun(rows *sql.Rows) (*RunData, error) {
-	rows, err := tx.Query(q, args...)
+	r := &RunData{}
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-	return scanRunsLTS(rows)
-}
-
-func scanRun(rows *sql.Rows) (*types.Run, error) {
 	var data []byte
-	if err := rows.Scan(&data); err != nil {
+	if err := rows.Scan(&r.ID, &r.GroupPath, &r.Phase, &data); err != nil {
 		return nil, errors.Wrap(err, "failed to scan rows")
 	}
-	var run *types.Run
+	if len(data) > 0 {
-	if err := json.Unmarshal(data, &run); err != nil {
+		if err := json.Unmarshal(data, &r.Run); err != nil {
 			return nil, errors.Wrap(err, "failed to unmarshal run")
 		}
-
-	return run, nil
-}
-
-func scanRunLTS(rows *sql.Rows) (string, error) {
-	var id string
-	if err := rows.Scan(&id); err != nil {
-		return "", errors.Wrap(err, "failed to scan rows")
 	}
-	return id, nil
+
+	return r, nil
 }
 
-func scanRuns(rows *sql.Rows) ([]*types.Run, error) {
+func scanRuns(rows *sql.Rows) ([]*RunData, error) {
-	runs := []*types.Run{}
+	runs := []*RunData{}
 	for rows.Next() {
 		r, err := scanRun(rows)
 		if err != nil {
@@ -939,21 +956,6 @@ func scanRuns(rows *sql.Rows) ([]*types.Run, error) {
 	return runs, nil
 }
 
-func scanRunsLTS(rows *sql.Rows) ([]string, error) {
-	ids := []string{}
-	for rows.Next() {
-		r, err := scanRunLTS(rows)
-		if err != nil {
-			return nil, err
-		}
-		ids = append(ids, r)
-	}
-	if err := rows.Err(); err != nil {
-		return nil, err
-	}
-	return ids, nil
-}
-
 func fetchChangeGroupsRevision(tx *db.Tx, q string, args ...interface{}) (types.ChangeGroupsRevisions, error) {
 	rows, err := tx.Query(q, args...)
 	if err != nil {