mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 05:18:52 +08:00
46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
package proxy
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strconv"
|
|
|
|
"github.com/milvus-io/milvus/pkg/util"
|
|
|
|
"github.com/milvus-io/milvus/pkg/util/funcutil"
|
|
|
|
"google.golang.org/grpc/metadata"
|
|
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
func getIdentifierFromContext(ctx context.Context) (int64, error) {
|
|
md, ok := metadata.FromIncomingContext(ctx)
|
|
if !ok {
|
|
return 0, fmt.Errorf("fail to get metadata from the context")
|
|
}
|
|
identifierContent, ok := md[util.IdentifierKey]
|
|
if !ok || len(identifierContent) < 1 {
|
|
return 0, fmt.Errorf("no identifier found in metadata")
|
|
}
|
|
identifier, err := strconv.ParseInt(identifierContent[0], 10, 64)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("failed to parse identifier: %s, error: %s", identifierContent[0], err.Error())
|
|
}
|
|
return identifier, nil
|
|
}
|
|
|
|
func KeepActiveInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
|
|
// We shouldn't block the normal rpc. though this may be not very accurate enough.
|
|
// On the other hand, too many goroutines will also influence the rpc.
|
|
// Not sure which way is better, since actually we already make the `keepActive` asynchronous.
|
|
go func() {
|
|
identifier, err := getIdentifierFromContext(ctx)
|
|
if err == nil && funcutil.CheckCtxValid(ctx) {
|
|
GetConnectionManager().keepActive(identifier)
|
|
}
|
|
}()
|
|
|
|
return handler(ctx, req)
|
|
}
|