82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
package client
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"log"
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"sync"
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"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/agent/internal/commander"
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"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto/proto"
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"golang.org/x/sync/errgroup"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/metadata"
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)
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type CommanderClient struct {
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cmder *commander.CommandExecutor
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wg *sync.WaitGroup
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id, label string
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}
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func New(
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cmder *commander.CommandExecutor,
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id, label string,
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) CommanderClient {
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return CommanderClient{cmder, new(sync.WaitGroup), id, label}
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}
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func (self *CommanderClient) HandleCommands(ctx context.Context, srvAddr string, tc credentials.TransportCredentials) error {
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cli, err := grpc.NewClient(srvAddr, grpc.WithTransportCredentials(tc))
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if err != nil {
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return fmt.Errorf("Failed to connect to gRPC: %w", err)
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}
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ccli := proto.NewCommanderClient(cli)
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bidi, err := ccli.Stream(metadata.NewOutgoingContext(ctx, metadata.MD{"agentid": []string{self.id}, "label": []string{self.label}}))
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if err != nil {
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return err
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}
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wg := new(errgroup.Group)
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wg.Go(self.recv(bidi))
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// wg.Go(self.send(bidi))
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err = wg.Wait()
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self.wg.Wait()
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return err
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}
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func (self *CommanderClient) recv(bidi grpc.BidiStreamingClient[proto.FinishedCommand, proto.Command]) func() error {
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return func() error {
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for {
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msg, err := bidi.Recv()
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if err != nil {
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if errors.Is(err, io.EOF) {
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return nil
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}
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return err
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}
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self.wg.Go(func() {
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func() error {
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fc, err := self.cmder.Execute(msg)
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if err != nil {
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return err
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}
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return bidi.Send(fc)
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}()
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if err != nil {
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log.Println(err)
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}
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})
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}
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}
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}
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// func (self *God) send(bidi grpc.BidiStreamingClient[proto.FinishedCommand, proto.Command]) func() error {
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// return func() error {
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// return nil
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// }
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// }
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