fix(#76): report request-scoped data freshness

This commit is contained in:
2026-07-12 20:26:21 -04:00
parent 1a9e08c0ab
commit dafb9b6dc5
18 changed files with 562 additions and 91 deletions

View File

@@ -16,6 +16,7 @@ import (
readability "codeberg.org/readeck/go-readability/v2"
"github.com/AmanTahiliani/box-box/internal/api"
"github.com/AmanTahiliani/box-box/internal/models"
"github.com/AmanTahiliani/box-box/internal/query"
)
@@ -43,6 +44,7 @@ func (s *Server) handleMeetings(w http.ResponseWriter, r *http.Request) {
switch parseSourceMode(r) {
case sourceLocal:
markLocalResponse(w, false)
if !s.hasLocalQuery() {
writeJSON(w, []models.Meeting{})
return
@@ -62,17 +64,20 @@ func (s *Server) handleMeetings(w http.ResponseWriter, r *http.Request) {
return
}
if len(meetings) > 0 {
markLocalResponse(w, false)
writeJSON(w, meetings)
return
}
}
}
meetings, err := s.client.GetMeetingsForYear(year)
client := s.client.Scoped()
meetings, err := client.GetMeetingsForYear(year)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, meetings)
}
@@ -87,6 +92,7 @@ func (s *Server) handleSessions(w http.ResponseWriter, r *http.Request) {
switch parseSourceMode(r) {
case sourceLocal:
markLocalResponse(w, false)
if !s.hasLocalQuery() {
writeJSON(w, []models.Session{})
return
@@ -106,23 +112,27 @@ func (s *Server) handleSessions(w http.ResponseWriter, r *http.Request) {
return
}
if len(sessions) > 0 {
markLocalResponse(w, false)
writeJSON(w, sessions)
return
}
}
}
sessions, err := s.client.GetSessionsForMeeting(meetingKey)
client := s.client.Scoped()
sessions, err := client.GetSessionsForMeeting(meetingKey)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, sessions)
}
// --- /api/v1/news ---
func (s *Server) handleNews(w http.ResponseWriter, r *http.Request) {
markLocalResponse(w, false)
if !s.hasLocalQuery() {
writeJSON(w, []query.NewsItem{})
return
@@ -223,6 +233,7 @@ func (s *Server) handleDrivers(w http.ResponseWriter, r *http.Request) {
switch parseSourceMode(r) {
case sourceLocal:
markLocalResponse(w, false)
if !s.hasLocalQuery() {
writeJSON(w, []models.Driver{})
return
@@ -242,6 +253,7 @@ func (s *Server) handleDrivers(w http.ResponseWriter, r *http.Request) {
if s.hasLocalQuery() {
drivers, err := s.query.ListDrivers(sessionKey)
if err == nil && len(drivers) > 0 {
markLocalResponse(w, false)
writeJSON(w, drivers)
return
}
@@ -252,11 +264,13 @@ func (s *Server) handleDrivers(w http.ResponseWriter, r *http.Request) {
}
}
drivers, err := s.client.GetDriversForSession(sessionKey)
client := s.client.Scoped()
drivers, err := client.GetDriversForSession(sessionKey)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, drivers)
}
@@ -279,6 +293,7 @@ func (s *Server) handleResults(w http.ResponseWriter, r *http.Request) {
switch parseSourceMode(r) {
case sourceLocal:
markLocalResponse(w, false)
if !s.hasLocalQuery() {
writeJSON(w, []resultWithDriver{})
return
@@ -294,6 +309,7 @@ func (s *Server) handleResults(w http.ResponseWriter, r *http.Request) {
if s.hasLocalQuery() {
results, err := s.query.ListResults(sessionKey)
if err == nil && len(results) > 0 {
markLocalResponse(w, false)
writeJSON(w, enrichedResultsToAPI(results))
return
}
@@ -310,13 +326,14 @@ func (s *Server) handleResults(w http.ResponseWriter, r *http.Request) {
resultsErr error
wg sync.WaitGroup
)
client := s.client.Scoped()
wg.Add(2)
go func() { defer wg.Done(); results, resultsErr = s.client.GetSessionResult(sessionKey) }()
go func() { defer wg.Done(); drivers, _ = s.client.GetDriversForSession(sessionKey) }()
go func() { defer wg.Done(); results, resultsErr = client.GetSessionResult(sessionKey) }()
go func() { defer wg.Done(); drivers, _ = client.GetDriversForSession(sessionKey) }()
wg.Wait()
if resultsErr != nil {
writeError(w, resultsErr, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, resultsErr, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
@@ -332,6 +349,7 @@ func (s *Server) handleResults(w http.ResponseWriter, r *http.Request) {
}
enriched = append(enriched, e)
}
markOpenF1Response(w, client)
writeJSON(w, enriched)
}
@@ -354,6 +372,7 @@ func (s *Server) handleGrid(w http.ResponseWriter, r *http.Request) {
switch parseSourceMode(r) {
case sourceLocal:
markLocalResponse(w, false)
if !s.hasLocalQuery() {
writeJSON(w, []gridWithDriver{})
return
@@ -369,6 +388,7 @@ func (s *Server) handleGrid(w http.ResponseWriter, r *http.Request) {
if s.hasLocalQuery() {
grid, err := s.query.ListStartingGrid(sessionKey)
if err == nil && len(grid) > 0 {
markLocalResponse(w, false)
writeJSON(w, enrichedGridToAPI(grid))
return
}
@@ -385,13 +405,14 @@ func (s *Server) handleGrid(w http.ResponseWriter, r *http.Request) {
gridErr error
wg sync.WaitGroup
)
client := s.client.Scoped()
wg.Add(2)
go func() { defer wg.Done(); grid, gridErr = s.client.GetStartingGrid(sessionKey) }()
go func() { defer wg.Done(); drivers, _ = s.client.GetDriversForSession(sessionKey) }()
go func() { defer wg.Done(); grid, gridErr = client.GetStartingGrid(sessionKey) }()
go func() { defer wg.Done(); drivers, _ = client.GetDriversForSession(sessionKey) }()
wg.Wait()
if gridErr != nil {
writeError(w, gridErr, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, gridErr, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
@@ -407,6 +428,7 @@ func (s *Server) handleGrid(w http.ResponseWriter, r *http.Request) {
}
enriched = append(enriched, e)
}
markOpenF1Response(w, client)
writeJSON(w, enriched)
}
@@ -419,26 +441,29 @@ func (s *Server) handleLaps(w http.ResponseWriter, r *http.Request) {
return
}
client := s.client.Scoped()
if dnStr := r.URL.Query().Get("driver_number"); dnStr != "" {
driverNumber, err := strconv.Atoi(dnStr)
if err != nil || driverNumber == 0 {
http.Error(w, "invalid driver_number", http.StatusBadRequest)
return
}
laps, err := s.client.GetLapsForDriver(sessionKey, driverNumber)
laps, err := client.GetLapsForDriver(sessionKey, driverNumber)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, laps)
return
}
laps, err := s.client.GetLapsForSession(sessionKey)
laps, err := client.GetLapsForSession(sessionKey)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, laps)
}
@@ -450,11 +475,13 @@ func (s *Server) handleWeather(w http.ResponseWriter, r *http.Request) {
http.Error(w, "session_key required", http.StatusBadRequest)
return
}
weather, err := s.client.GetWeather(sessionKey)
client := s.client.Scoped()
weather, err := client.GetWeather(sessionKey)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, weather)
}
@@ -466,11 +493,13 @@ func (s *Server) handleRaceControl(w http.ResponseWriter, r *http.Request) {
http.Error(w, "session_key required", http.StatusBadRequest)
return
}
rc, err := s.client.GetRaceControl(sessionKey)
client := s.client.Scoped()
rc, err := client.GetRaceControl(sessionKey)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, rc)
}
@@ -487,11 +516,13 @@ func (s *Server) handleTelemetry(w http.ResponseWriter, r *http.Request) {
http.Error(w, "driver_number required", http.StatusBadRequest)
return
}
carData, err := s.client.GetCarData(sessionKey, driverNumber)
client := s.client.Scoped()
carData, err := client.GetCarData(sessionKey, driverNumber)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, carData)
}
@@ -503,11 +534,13 @@ func (s *Server) handleOvertakes(w http.ResponseWriter, r *http.Request) {
http.Error(w, "session_key required", http.StatusBadRequest)
return
}
overtakes, err := s.client.GetOvertakesForSession(sessionKey)
client := s.client.Scoped()
overtakes, err := client.GetOvertakesForSession(sessionKey)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, overtakes)
}
@@ -524,11 +557,13 @@ func (s *Server) handleTeamRadio(w http.ResponseWriter, r *http.Request) {
http.Error(w, "driver_number required", http.StatusBadRequest)
return
}
radios, err := s.client.GetTeamRadio(sessionKey, driverNumber)
client := s.client.Scoped()
radios, err := client.GetTeamRadio(sessionKey, driverNumber)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, radios)
}
@@ -547,23 +582,25 @@ func (s *Server) handleChampionshipDrivers(w http.ResponseWriter, r *http.Reques
if year == 0 {
year = time.Now().Year()
}
champ, err := s.client.GetDriverChampionshipForYear(year)
client := s.client.Scoped()
champ, err := client.GetDriverChampionshipForYear(year)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
if len(champ) == 0 {
markOpenF1Response(w, client)
writeJSON(w, []any{})
return
}
drivers, _ := s.client.GetDriversForSession(champ[0].SessionKey)
drivers, _ := client.GetDriversForSession(champ[0].SessionKey)
driverMap := buildDriverMapFirst(drivers)
enriched := make([]champDriverWithInfo, 0, len(champ))
for _, c := range champ {
e := champDriverWithInfo{ChampionshipDriver: c}
d, ok := s.championshipDriverInfo(c.SessionKey, c.DriverNumber, driverMap)
d, ok := championshipDriverInfo(client, c.SessionKey, c.DriverNumber, driverMap)
if ok {
e.NameAcronym = d.NameAcronym
e.FullName = d.FullName
@@ -572,11 +609,12 @@ func (s *Server) handleChampionshipDrivers(w http.ResponseWriter, r *http.Reques
}
enriched = append(enriched, e)
}
markOpenF1Response(w, client)
writeJSON(w, enriched)
}
func (s *Server) championshipDriverInfo(sessionKey, driverNumber int, fallback map[int]models.Driver) (models.Driver, bool) {
if d, err := s.client.GetDriver(sessionKey, driverNumber); err == nil && d != nil {
func championshipDriverInfo(client *api.OpenF1Client, sessionKey, driverNumber int, fallback map[int]models.Driver) (models.Driver, bool) {
if d, err := client.GetDriver(sessionKey, driverNumber); err == nil && d != nil {
return *d, true
}
d, ok := fallback[driverNumber]
@@ -590,11 +628,13 @@ func (s *Server) handleChampionshipTeams(w http.ResponseWriter, r *http.Request)
if year == 0 {
year = time.Now().Year()
}
teams, err := s.client.GetTeamChampionshipForYear(year)
client := s.client.Scoped()
teams, err := client.GetTeamChampionshipForYear(year)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1Response(w, client)
writeJSON(w, teams)
}
@@ -671,8 +711,10 @@ func champHubTTL(year int, now time.Time) time.Duration {
}
type champHubEntry struct {
resp champHubResponse
expires time.Time
resp champHubResponse
source string
freshness string
expires time.Time
}
// champHubCache is an in-memory cache of aggregated hub responses keyed by
@@ -693,12 +735,26 @@ func (c *champHubCache) get(year int, now time.Time) (champHubResponse, bool) {
}
func (c *champHubCache) put(year int, resp champHubResponse, now time.Time, ttl time.Duration) {
c.putWithMetadata(year, resp, "local", "local", now, ttl)
}
func (c *champHubCache) getWithMetadata(year int, now time.Time) (champHubResponse, string, string, bool) {
c.mu.Lock()
defer c.mu.Unlock()
e, ok := c.entries[year]
if !ok || now.After(e.expires) {
return champHubResponse{}, "", "", false
}
return e.resp, e.source, e.freshness, true
}
func (c *champHubCache) putWithMetadata(year int, resp champHubResponse, source, freshness string, now time.Time, ttl time.Duration) {
c.mu.Lock()
defer c.mu.Unlock()
if c.entries == nil {
c.entries = map[int]champHubEntry{}
}
c.entries[year] = champHubEntry{resp: resp, expires: now.Add(ttl)}
c.entries[year] = champHubEntry{resp: resp, source: source, freshness: freshness, expires: now.Add(ttl)}
}
// fetchMeetingRaces fans fetch out across meetings with bounded concurrency.
@@ -740,13 +796,6 @@ func (s *Server) handleChampionshipHub(w http.ResponseWriter, r *http.Request) {
}
mode := parseSourceMode(r)
if mode != sourceLocal {
if resp, ok := s.hubCache.get(year, time.Now()); ok {
writeJSON(w, resp)
return
}
}
if mode == sourceLocal || mode == sourceAuto {
resp, ok, err := s.localChampionshipHub(year)
if err != nil {
@@ -754,21 +803,33 @@ func (s *Server) handleChampionshipHub(w http.ResponseWriter, r *http.Request) {
return
}
if ok {
s.hubCache.put(year, resp, time.Now(), champHubTTL(year, time.Now()))
s.hubCache.putWithMetadata(year, resp, "local", "local", time.Now(), champHubTTL(year, time.Now()))
markLocalResponse(w, false)
writeJSON(w, resp)
return
}
if mode == sourceLocal {
markLocalResponse(w, false)
writeJSON(w, resp)
return
}
}
resp, err := s.openF1ChampionshipHub(year)
if err != nil {
writeError(w, err, http.StatusInternalServerError, s.client.LastResponseWasStale())
// At this point an auto request has no usable domain aggregate and an
// explicit OpenF1 request must not be satisfied by a local cache entry.
if resp, source, freshness, ok := s.hubCache.getWithMetadata(year, time.Now()); ok && source == "openf1" {
markDataResponse(w, source, freshness)
writeJSON(w, resp)
return
}
client := s.client.Scoped()
resp, incomplete, err := s.openF1ChampionshipHub(client, year)
if err != nil {
writeError(w, err, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
markOpenF1AggregateResponse(w, client, incomplete)
writeJSON(w, resp)
}
@@ -797,25 +858,26 @@ func (s *Server) localChampionshipHub(year int) (champHubResponse, bool, error)
return aggregateChampionshipHub(year, races, inputs.Champ, inputs.Teams, inputs.DriverMap), true, nil
}
func (s *Server) openF1ChampionshipHub(year int) (champHubResponse, error) {
champ, err := s.client.GetDriverChampionshipForYear(year)
func (s *Server) openF1ChampionshipHub(client *api.OpenF1Client, year int) (champHubResponse, bool, error) {
champ, err := client.GetDriverChampionshipForYear(year)
if err != nil {
return champHubResponse{}, err
return champHubResponse{}, false, err
}
if len(champ) == 0 {
return champHubResponse{Season: year, RoundLabels: []string{}, Drivers: []champHubDriver{}, Teams: []champHubTeam{}}, nil
return champHubResponse{Season: year, RoundLabels: []string{}, Drivers: []champHubDriver{}, Teams: []champHubTeam{}}, false, nil
}
teams, _ := s.client.GetTeamChampionshipForYear(year)
teams, teamsErr := client.GetTeamChampionshipForYear(year)
driverInfo := map[int]models.Driver{}
if ds, derr := s.client.GetDriversForSession(champ[0].SessionKey); derr == nil {
if ds, derr := client.GetDriversForSession(champ[0].SessionKey); derr == nil {
driverInfo = buildDriverMapFirst(ds)
}
races, incomplete, err := s.fetchSeasonRaces(year)
races, incomplete, err := fetchSeasonRaces(client, year)
if err != nil {
return champHubResponse{}, err
return champHubResponse{}, false, err
}
incomplete = incomplete || teamsErr != nil
resp := aggregateChampionshipHub(year, races, champ, teams, driverInfo)
ttl := champHubTTL(year, time.Now())
@@ -825,16 +887,22 @@ func (s *Server) openF1ChampionshipHub(year int) (champHubResponse, error) {
// so a partial view of the season doesn't stick around for the full TTL.
ttl = champHubIncompleteTTL
}
s.hubCache.put(year, resp, time.Now(), ttl)
return resp, nil
freshness := "fresh"
if client.LastResponseWasStale() {
freshness = "stale"
} else if incomplete {
freshness = "partial"
}
s.hubCache.putWithMetadata(year, resp, "openf1", freshness, time.Now(), ttl)
return resp, incomplete, nil
}
// fetchSeasonRaces returns a season's GP meetings in date order, each bundled
// with its race results and starting grid fetched from OpenF1. incomplete
// reports whether any per-meeting fetch failed, so callers can avoid caching a
// partial view of the season for long.
func (s *Server) fetchSeasonRaces(year int) (races []meetingRace, incomplete bool, err error) {
meetings, err := s.client.GetMeetingsForYear(year)
func fetchSeasonRaces(client *api.OpenF1Client, year int) (races []meetingRace, incomplete bool, err error) {
meetings, err := client.GetMeetingsForYear(year)
if err != nil {
return nil, false, err
}
@@ -842,7 +910,7 @@ func (s *Server) fetchSeasonRaces(year int) (races []meetingRace, incomplete boo
var failed atomic.Bool
races = fetchMeetingRaces(meetings, champHubWorkers, func(m models.Meeting) (meetingRace, bool) {
sessions, serr := s.client.GetSessionsForMeeting(int(m.MeetingKey))
sessions, serr := client.GetSessionsForMeeting(int(m.MeetingKey))
if serr != nil {
failed.Store(true)
return meetingRace{}, false
@@ -857,8 +925,8 @@ func (s *Server) fetchSeasonRaces(year int) (races []meetingRace, incomplete boo
if raceKey == 0 {
return meetingRace{}, false // not a GP meeting (e.g. pre-season testing)
}
results, rerr := s.client.GetSessionResult(raceKey)
grid, gerr := s.client.GetStartingGrid(raceKey)
results, rerr := client.GetSessionResult(raceKey)
grid, gerr := client.GetStartingGrid(raceKey)
if rerr != nil || gerr != nil {
failed.Store(true)
}
@@ -1077,6 +1145,7 @@ type trackOutlineResponse struct {
}
func (s *Server) handleTrackOutline(w http.ResponseWriter, r *http.Request) {
markLocalResponse(w, false)
year, _ := strconv.Atoi(r.URL.Query().Get("year"))
if year == 0 {
year = time.Now().Year()
@@ -1283,12 +1352,13 @@ func (s *Server) handleStrategy(w http.ResponseWriter, r *http.Request) {
resErr error
wg sync.WaitGroup
)
client := s.client.Scoped()
wg.Add(5)
go func() { defer wg.Done(); stints, stintsErr = s.client.GetStintsForSession(sessionKey) }()
go func() { defer wg.Done(); pits, pitsErr = s.client.GetPitStopsForSession(sessionKey) }()
go func() { defer wg.Done(); results, resErr = s.client.GetSessionResult(sessionKey) }()
go func() { defer wg.Done(); drivers, _ = s.client.GetDriversForSession(sessionKey) }()
go func() { defer wg.Done(); rc, _ = s.client.GetRaceControl(sessionKey) }()
go func() { defer wg.Done(); stints, stintsErr = client.GetStintsForSession(sessionKey) }()
go func() { defer wg.Done(); pits, pitsErr = client.GetPitStopsForSession(sessionKey) }()
go func() { defer wg.Done(); results, resErr = client.GetSessionResult(sessionKey) }()
go func() { defer wg.Done(); drivers, _ = client.GetDriversForSession(sessionKey) }()
go func() { defer wg.Done(); rc, _ = client.GetRaceControl(sessionKey) }()
wg.Wait()
if stintsErr != nil || pitsErr != nil || resErr != nil {
@@ -1299,12 +1369,13 @@ func (s *Server) handleStrategy(w http.ResponseWriter, r *http.Request) {
if e == nil {
e = resErr
}
writeError(w, e, http.StatusInternalServerError, s.client.LastResponseWasStale())
writeError(w, e, http.StatusInternalServerError, client.LastResponseWasStale())
return
}
// Non-race sessions have no stints.
if len(stints) == 0 {
markOpenF1Response(w, client)
writeJSON(w, map[string]any{"note": "Not applicable", "drivers": []any{}})
return
}
@@ -1396,6 +1467,7 @@ func (s *Server) handleStrategy(w http.ResponseWriter, r *http.Request) {
return pi < pj
})
markOpenF1Response(w, client)
writeJSON(w, strategyResponse{
SessionKey: sessionKey,
TotalLaps: totalLaps,
@@ -1497,14 +1569,15 @@ func (s *Server) handleLapsComparison(w http.ResponseWriter, r *http.Request) {
rc []models.RaceControl
wg sync.WaitGroup
)
client := s.client.Scoped()
wg.Add(4)
go func() { defer wg.Done(); allLaps, _ = s.client.GetLapsForSession(sessionKey) }()
go func() { defer wg.Done(); stints, _ = s.client.GetStintsForSession(sessionKey) }()
go func() { defer wg.Done(); pits, _ = s.client.GetPitStopsForSession(sessionKey) }()
go func() { defer wg.Done(); rc, _ = s.client.GetRaceControl(sessionKey) }()
go func() { defer wg.Done(); allLaps, _ = client.GetLapsForSession(sessionKey) }()
go func() { defer wg.Done(); stints, _ = client.GetStintsForSession(sessionKey) }()
go func() { defer wg.Done(); pits, _ = client.GetPitStopsForSession(sessionKey) }()
go func() { defer wg.Done(); rc, _ = client.GetRaceControl(sessionKey) }()
wg.Wait()
allDrivers, _ := s.client.GetDriversForSession(sessionKey)
allDrivers, _ := client.GetDriversForSession(sessionKey)
driverMap := buildDriverMap(allDrivers)
// If no filter, default to first 3 unique driver numbers from lap data.
@@ -1558,6 +1631,7 @@ func (s *Server) handleLapsComparison(w http.ResponseWriter, r *http.Request) {
compDrivers = append(compDrivers, cd)
}
markOpenF1Response(w, client)
writeJSON(w, lapsComparisonResponse{
SessionKey: sessionKey,
SCPeriods: extractSCPeriods(rc),