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package searchix
import (
"context"
"slices"
"sync"
"time"
"go.alanpearce.eu/searchix/internal/config"
"go.alanpearce.eu/searchix/internal/importer"
"go.alanpearce.eu/searchix/internal/index"
"go.alanpearce.eu/searchix/internal/server"
"go.alanpearce.eu/x/log"
"github.com/getsentry/sentry-go"
"github.com/pkg/errors"
)
func nextUTCOccurrenceOfTime(t config.LocalTime) time.Time {
now := time.Now()
dayTime := t
nextRun := time.Date(
now.Year(),
now.Month(),
now.Day(),
dayTime.Hour,
dayTime.Minute,
dayTime.Second,
0,
time.UTC,
)
if nextRun.Before(now) {
return nextRun.AddDate(0, 0, 1)
}
return nextRun
}
type IndexOptions struct {
Update bool
Replace bool
LowMemory bool
Logger *log.Logger
}
func (s *Server) SetupIndex(options *IndexOptions) error {
var i uint
cfgEnabledSources := make([]string, len(s.cfg.Importer.Sources))
for key := range s.cfg.Importer.Sources {
cfgEnabledSources[i] = key
i++
}
slices.Sort(cfgEnabledSources)
read, write, exists, err := index.OpenOrCreate(
s.cfg.DataPath,
options.Replace,
&index.Options{
LowMemory: options.LowMemory,
Logger: options.Logger.Named("index"),
},
)
if err != nil {
return errors.Wrap(err, "Failed to open or create index")
}
s.readIndex = read
s.writeIndex = write
if !exists || options.Replace || options.Update {
s.log.Info(
"Starting build job",
"new",
!exists,
"replace",
options.Replace,
"update",
options.Update,
)
err = importer.Start(
s.cfg,
s.log.Named("importer"),
write,
options.Replace || options.Update,
nil,
)
if err != nil {
return errors.Wrap(err, "Failed to build index")
}
if options.Replace || options.Update {
return nil
}
} else {
indexedSources, err := read.GetEnabledSources()
if err != nil {
return errors.Wrap(err, "Failed to get enabled sources from index")
}
slices.Sort(indexedSources)
if !slices.Equal(cfgEnabledSources, indexedSources) {
newSources := slices.DeleteFunc(slices.Clone(cfgEnabledSources), func(s string) bool {
return slices.Contains(indexedSources, s)
})
retiredSources := slices.DeleteFunc(slices.Clone(indexedSources), func(s string) bool {
return slices.Contains(cfgEnabledSources, s)
})
if len(newSources) > 0 {
s.log.Info("adding new sources", "sources", newSources)
err := importer.Start(s.cfg, options.Logger.Named("importer"), write, false, &newSources)
if err != nil {
return errors.Wrap(err, "Failed to update index with new sources")
}
}
if len(retiredSources) > 0 {
s.log.Info("removing retired sources", "sources", retiredSources)
for _, s := range retiredSources {
err := write.DeleteBySource(s)
if err != nil {
return errors.Wrapf(err, "Failed to remove retired source %s", s)
}
}
}
}
}
return nil
}
type Server struct {
sv *server.Server
wg *sync.WaitGroup
cfg *config.Config
log *log.Logger
sentryHub *sentry.Hub
readIndex *index.ReadIndex
writeIndex *index.WriteIndex
}
func New(cfg *config.Config, log *log.Logger) (*Server, error) {
err := sentry.Init(sentry.ClientOptions{
EnableTracing: true,
TracesSampleRate: 0.01,
Dsn: cfg.Web.SentryDSN,
Environment: cfg.Web.Environment,
})
if err != nil {
log.Warn("could not initialise sentry", "error", err)
}
return &Server{
cfg: cfg,
log: log,
sentryHub: sentry.CurrentHub(),
}, nil
}
func (s *Server) startUpdateTimer(
ctx context.Context,
localHub *sentry.Hub,
) {
const monitorSlug = "import"
localHub.WithScope(func(scope *sentry.Scope) {
var err error
scope.SetContext("monitor", sentry.Context{"slug": monitorSlug})
monitorConfig := &sentry.MonitorConfig{
Schedule: sentry.IntervalSchedule(1, sentry.MonitorScheduleUnitDay),
// minutes
MaxRuntime: 10,
CheckInMargin: 5,
Timezone: time.Local.String(),
}
s.wg.Add(1)
nextRun := nextUTCOccurrenceOfTime(s.cfg.Importer.UpdateAt)
for {
s.log.Debug("scheduling next run", "next-run", nextRun)
select {
case <-ctx.Done():
s.log.Debug("stopping scheduler")
s.wg.Done()
return
case <-time.After(time.Until(nextRun)):
}
s.wg.Add(1)
s.log.Info("updating index")
eventID := localHub.CaptureCheckIn(&sentry.CheckIn{
MonitorSlug: monitorSlug,
Status: sentry.CheckInStatusInProgress,
}, monitorConfig)
err = importer.Start(s.cfg, s.log.Named("importer"), s.writeIndex, false, nil)
s.wg.Done()
if err != nil {
s.log.Warn("error updating index", "error", err)
localHub.CaptureException(err)
localHub.CaptureCheckIn(&sentry.CheckIn{
ID: *eventID,
MonitorSlug: monitorSlug,
Status: sentry.CheckInStatusError,
}, monitorConfig)
} else {
s.log.Info("update complete")
localHub.CaptureCheckIn(&sentry.CheckIn{
ID: *eventID,
MonitorSlug: monitorSlug,
Status: sentry.CheckInStatusOK,
}, monitorConfig)
}
nextRun = nextRun.AddDate(0, 0, 1)
}
})
}
func (s *Server) Start(ctx context.Context, liveReload bool) error {
var err error
s.sv, err = server.New(s.cfg, s.readIndex, s.log.Named("server"), liveReload)
if err != nil {
return errors.Wrap(err, "error setting up server")
}
s.wg = &sync.WaitGroup{}
go s.startUpdateTimer(ctx, sentry.CurrentHub().Clone())
s.wg.Add(1)
err = s.sv.Start()
if err != nil {
s.wg.Done()
return errors.Wrap(err, "error starting server")
}
return nil
}
func (s *Server) Stop() {
<-s.sv.Stop()
defer s.wg.Done()
s.sentryHub.Flush(2 * time.Second)
}
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