123 lines
2.4 KiB
Go
123 lines
2.4 KiB
Go
package task
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import (
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"context"
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log "github.com/sirupsen/logrus"
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"google.golang.org/protobuf/types/known/emptypb"
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"io"
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"merch-api/internal/common"
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tt "merch-api/pkg/taskTransport/v1"
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"sync"
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"time"
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)
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type service struct {
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tt.UnimplementedTaskProcessorServer
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merchProvider common.MerchProvider
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}
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func newService(mp common.MerchProvider) *service {
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return &service{
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merchProvider: mp,
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}
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}
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func (s *service) RequestTasks(_ *emptypb.Empty, stream tt.TaskProcessor_RequestTasksServer) error {
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tasks, err := s.merchProvider.GetTasks(stream.Context())
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if err != nil {
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log.WithError(err).Errorf("%v Failed to get tasks", pkgLogHeader)
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return err
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}
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for _, task := range tasks {
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if err = stream.Send(&tt.Task{
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MerchUuid: task.MerchUuid,
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Origins: task.Origins,
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}); err != nil {
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log.WithError(err).Errorf("%v Failed to send tasks", pkgLogHeader)
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return err
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}
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}
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return nil
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}
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func (s *service) SendResults(stream tt.TaskProcessor_SendResultsServer) error {
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ctx, cancel := context.WithCancel(context.Background())
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ticker := time.NewTicker(5 * time.Second)
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defer ticker.Stop()
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mu := &sync.Mutex{}
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batch := make([]common.Result, 0)
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stop := make(chan struct{})
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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mu.Lock()
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if len(batch) == 0 {
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mu.Unlock()
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continue
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}
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toInsert := make([]common.Result, len(batch))
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copy(toInsert, batch)
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batch = batch[:0]
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mu.Unlock()
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if err := s.merchProvider.InsertPrices(ctx, toInsert); err != nil {
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log.WithError(err).Errorf("%v Failed to batch insert result", pkgLogHeader)
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}
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}
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}
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}()
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for {
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response, err := stream.Recv()
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if err == io.EOF {
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log.Debugf("%v gRPC EOF", pkgLogHeader)
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break
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}
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if err != nil {
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log.WithError(err).Errorf("%v Failed to receive", pkgLogHeader)
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cancel()
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return err
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}
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mu.Lock()
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batch = append(batch, common.Result{
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MerchUuid: response.MerchUuid,
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OriginName: response.OriginName,
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Price: response.Price,
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})
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mu.Unlock()
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}
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close(stop)
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wg.Wait()
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mu.Lock()
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finalBatch := make([]common.Result, len(batch))
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copy(finalBatch, batch)
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mu.Unlock()
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if len(finalBatch) > 0 {
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err := s.merchProvider.InsertPrices(ctx, finalBatch)
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if err != nil {
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log.WithError(err).Errorf("%v Failed to batch insert last data", pkgLogHeader)
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cancel()
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return err
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}
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}
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cancel()
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return stream.SendAndClose(&emptypb.Empty{})
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}
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