package created

internal/taskAgent/handler.go

@@ -0,0 +1,40 @@
+package taskAgent
+
+import (
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+	tt "task-processor/pkg/taskTransport/v1"
+	"time"
+)
+
+const pkgLogHeader string = "Task agent |"
+
+type Handler struct {
+	client tt.TaskProcessorClient
+	*service
+}
+
+type Deps struct {
+	Addr    string
+	Timeout time.Duration
+}
+
+func NewHandler(deps Deps) *Handler {
+	var opts []grpc.DialOption
+	insec := grpc.WithTransportCredentials(insecure.NewCredentials())
+	opts = append(opts, insec)
+
+	conn, err := grpc.NewClient(deps.Addr, opts...)
+	if err != nil {
+		log.WithError(err).Fatalf("%v grpc connection failed", pkgLogHeader)
+	}
+
+	client := tt.NewTaskProcessorClient(conn)
+	log.WithField("address", deps.Addr).Debugf("%v client", pkgLogHeader)
+
+	return &Handler{
+		client:  client,
+		service: newService(client, deps.Timeout),
+	}
+}

internal/taskAgent/interface.go

@@ -0,0 +1,8 @@
+package taskAgent
+
+import "context"
+
+type TaskAgent interface {
+	FetchTasks(ctx context.Context) ([]Task, error)
+	SendResults(ctx context.Context, results []Result) error
+}

internal/taskAgent/service.go

@@ -0,0 +1,84 @@
+package taskAgent
+
+import (
+	"context"
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/protobuf/types/known/emptypb"
+	"io"
+	tt "task-processor/pkg/taskTransport/v1"
+	"time"
+)
+
+type service struct {
+	client  tt.TaskProcessorClient
+	timeout time.Duration
+}
+
+func newService(c tt.TaskProcessorClient, timeout time.Duration) *service {
+	return &service{
+		client:  c,
+		timeout: timeout,
+	}
+}
+
+func (s *service) FetchTasks(ctx context.Context) (received []Task, err error) {
+	fetchCtx, cancel := context.WithTimeout(ctx, s.timeout)
+	defer cancel()
+
+	stream, err := s.client.RequestTasks(fetchCtx, &emptypb.Empty{})
+	if err != nil {
+		log.WithError(err).Errorf("%v failed to open stream", pkgLogHeader)
+		return nil, err
+	}
+
+	for {
+		log.Infof("%v Receiving tasks", pkgLogHeader)
+		task, err := stream.Recv()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			log.WithError(err).Errorf("%v failed to receive task", pkgLogHeader)
+			return nil, err
+		}
+
+		received = append(received, Task{
+			MerchUuid: task.MerchUuid,
+			Origins:   task.Origins,
+		})
+		log.WithField("Count", len(received)).Infof("%v End receiving tasks", pkgLogHeader)
+	}
+
+	return received, nil
+}
+
+func (s *service) SendResults(ctx context.Context, results []Result) error {
+	sendCtx, cancel := context.WithTimeout(ctx, s.timeout)
+	defer cancel()
+
+	stream, err := s.client.SendResults(sendCtx)
+	if err != nil {
+		log.WithError(err).Errorf("%v Failed to send results", pkgLogHeader)
+		return err
+	}
+
+	for _, result := range results {
+		toSend := tt.Result{
+			MerchUuid:  result.MerchUuid,
+			OriginName: result.OriginName,
+			Price:      result.Price,
+		}
+
+		if err = stream.Send(&toSend); err != nil {
+			log.WithError(err).Errorf("%v Failed to send results", pkgLogHeader)
+			return err
+		}
+	}
+
+	if err = stream.CloseSend(); err != nil {
+		log.WithError(err).Errorf("%v Failed to close send stream", pkgLogHeader)
+		return err
+	}
+
+	return nil
+}

internal/taskAgent/struct.go

@@ -0,0 +1,12 @@
+package taskAgent
+
+type Task struct {
+	MerchUuid string
+	Origins   map[string]string
+}
+
+type Result struct {
+	MerchUuid  string
+	OriginName string
+	Price      int32
+}