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grpc_server.go
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grpc_server.go
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package transport
import (
"context"
"time"
"github.com/Azure/azure-container-networking/npm/pkg/protos"
"google.golang.org/grpc/peer"
)
// clientStreamConnection represents a client stream connection
type clientStreamConnection struct {
stream protos.DataplaneEvents_ConnectServer
*protos.DatapathPodMetadata
addr string
timestamp int64
}
// String returns the address of the client
func (c clientStreamConnection) String() string {
return c.addr
}
// DataplaneEventsServer is the gRPC server for the DataplaneEvents service
type DataplaneEventsServer struct {
protos.UnimplementedDataplaneEventsServer
ctx context.Context
regCh chan<- clientStreamConnection
}
// NewServer creates a new DataplaneEventsServer instance
func NewServer(ctx context.Context, ch chan clientStreamConnection) *DataplaneEventsServer {
return &DataplaneEventsServer{
ctx: ctx,
regCh: ch,
}
}
// Connect is called when a client connects to the server
func (d *DataplaneEventsServer) Connect(m *protos.DatapathPodMetadata, stream protos.DataplaneEvents_ConnectServer) error {
p, ok := peer.FromContext(stream.Context())
if !ok {
return ErrNoPeer
}
conn := clientStreamConnection{
DatapathPodMetadata: m,
stream: stream,
addr: p.Addr.String(),
timestamp: time.Now().Unix(),
}
// Add stream to the list of active streams
d.regCh <- conn
// This should block until the client disconnects
<-d.ctx.Done()
return nil
}