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debugd: Correctly handle direct coordinator upload if coordinator was uploaded previously (file already exists)

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Signed-off-by: Malte Poll <mp@edgeless.systems>
This commit is contained in:
Malte Poll 2022-04-20 16:11:48 +02:00 committed by Malte Poll
parent f025afce98
commit 78af3b173f
5 changed files with 84 additions and 62 deletions
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17
debugd/cdbg/cmd/deploy.go
View File

@ -149,15 +149,20 @@ func deployOnEndpoint(ctx context.Context, in deployOnEndpointInput) error {
if err != nil {
return fmt.Errorf("starting coordinator upload to instance %v failed: %w", in.debugdEndpoint, err)
}
if err := in.reader.ReadStream(in.coordinatorPath, stream, debugd.Chunksize, true); err != nil {
return fmt.Errorf("streaming coordinator to instance failed: %w", err)
streamErr := in.reader.ReadStream(in.coordinatorPath, stream, debugd.Chunksize, true)
uploadResponse, closeErr := stream.CloseAndRecv()
if closeErr != nil {
return fmt.Errorf("closing upload stream after uploading coordinator to %v failed: %w", in.debugdEndpoint, closeErr)
}
uploadResponse, err := stream.CloseAndRecv()
if uploadResponse.Status != pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_SUCCESS || err != nil {
return fmt.Errorf("uploading coordinator to instance %v failed: %v / %w", in.debugdEndpoint, uploadResponse, err)
if uploadResponse.Status == pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_FILE_EXISTS {
log.Println("Coordinator was already uploaded")
return nil
}
if uploadResponse.Status != pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_SUCCESS || streamErr != nil {
return fmt.Errorf("uploading coordinator to instance %v failed: %v / %w", in.debugdEndpoint, uploadResponse, streamErr)
}
log.Println("Uploaded coordinator")
return nil
}

46
debugd/debugd/server/server.go
View File

@ -2,6 +2,9 @@ package server
import (
"context"
"errors"
"fmt"
"io/fs"
"log"
"net"
"sync"
@ -53,31 +56,38 @@ func (s *debugdServer) UploadCoordinator(stream pb.Debugd_UploadCoordinatorServe
Unit: debugd.CoordinatorSystemdUnitName,
Action: deploy.Stop,
})
log.Println("Starting coordinator upload")
if err := s.streamer.WriteStream(debugd.CoordinatorDeployFilename, stream, true); err != nil {
log.Printf("Uploading coordinator failed: %v\n", err)
return stream.SendAndClose(&pb.UploadCoordinatorResponse{
Status: pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_UPLOAD_FAILED,
})
}
log.Println("Successfully uploaded coordinator")
// after the upload succeeds, try to restart the coordinator
restartAction := deploy.ServiceManagerRequest{
Unit: debugd.CoordinatorSystemdUnitName,
Action: deploy.Restart,
}
if err := s.serviceManager.SystemdAction(stream.Context(), restartAction); err != nil {
log.Printf("Starting uploaded coordinator failed: %v\n", err)
return stream.SendAndClose(&pb.UploadCoordinatorResponse{
Status: pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_START_FAILED,
var responseStatus pb.UploadCoordinatorStatus
defer func() {
if err := s.serviceManager.SystemdAction(stream.Context(), restartAction); err != nil {
log.Printf("Starting uploaded coordinator failed: %v\n", err)
if responseStatus == pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_SUCCESS {
responseStatus = pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_START_FAILED
}
}
stream.SendAndClose(&pb.UploadCoordinatorResponse{
Status: responseStatus,
})
}()
log.Println("Starting coordinator upload")
if err := s.streamer.WriteStream(debugd.CoordinatorDeployFilename, stream, true); err != nil {
if errors.Is(err, fs.ErrExist) {
// coordinator was already uploaded
log.Println("Coordinator already uploaded")
responseStatus = pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_FILE_EXISTS
return nil
}
log.Printf("Uploading coordinator failed: %v\n", err)
responseStatus = pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_UPLOAD_FAILED
return fmt.Errorf("uploading coordinator failed: %w", err)
}
return stream.SendAndClose(&pb.UploadCoordinatorResponse{
Status: pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_SUCCESS,
})
log.Println("Successfully uploaded coordinator")
responseStatus = pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_SUCCESS
return nil
}
// DownloadCoordinator streams the local coordinator binary to other instances.

2
debugd/debugd/server/server_test.go
View File

@ -125,7 +125,7 @@ func TestUploadCoordinator(t *testing.T) {
writeStreamErr: errors.New("recv error"),
},
expectedResponseStatus: pb.UploadCoordinatorStatus_UPLOAD_COORDINATOR_UPLOAD_FAILED,
expectFile: true,
expectErr: true,
},
"starting coordinator fails": {
uploadChunks: [][]byte{

80
debugd/service/debugd.pb.go
View File

@ -72,6 +72,7 @@ const (
UploadCoordinatorStatus_UPLOAD_COORDINATOR_SUCCESS UploadCoordinatorStatus = 0
UploadCoordinatorStatus_UPLOAD_COORDINATOR_UPLOAD_FAILED UploadCoordinatorStatus = 1
UploadCoordinatorStatus_UPLOAD_COORDINATOR_START_FAILED UploadCoordinatorStatus = 2
UploadCoordinatorStatus_UPLOAD_COORDINATOR_FILE_EXISTS UploadCoordinatorStatus = 3
)
// Enum value maps for UploadCoordinatorStatus.
@ -80,11 +81,13 @@ var (
0: "UPLOAD_COORDINATOR_SUCCESS",
1: "UPLOAD_COORDINATOR_UPLOAD_FAILED",
2: "UPLOAD_COORDINATOR_START_FAILED",
3: "UPLOAD_COORDINATOR_FILE_EXISTS",
}
UploadCoordinatorStatus_value = map[string]int32{
"UPLOAD_COORDINATOR_SUCCESS": 0,
"UPLOAD_COORDINATOR_UPLOAD_FAILED": 1,
"UPLOAD_COORDINATOR_START_FAILED": 2,
"UPLOAD_COORDINATOR_FILE_EXISTS": 3,
}
)
@ -641,7 +644,7 @@ var file_debugd_proto_rawDesc = []byte{
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@ -649,42 +652,45 @@ var file_debugd_proto_rawDesc = []byte{
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}
var (

1
debugd/service/debugd.proto
View File

@ -43,6 +43,7 @@ enum UploadCoordinatorStatus {
UPLOAD_COORDINATOR_SUCCESS = 0;
UPLOAD_COORDINATOR_UPLOAD_FAILED = 1;
UPLOAD_COORDINATOR_START_FAILED = 2;
UPLOAD_COORDINATOR_FILE_EXISTS = 3;
}
message ServiceUnit {