mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-11-30 02:48:45 +08:00
46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
package proxy
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import (
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"context"
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"fmt"
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"strconv"
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"github.com/milvus-io/milvus/pkg/util"
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"github.com/milvus-io/milvus/pkg/util/funcutil"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc"
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)
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func getIdentifierFromContext(ctx context.Context) (int64, error) {
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md, ok := metadata.FromIncomingContext(ctx)
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if !ok {
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return 0, fmt.Errorf("fail to get metadata from the context")
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}
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identifierContent, ok := md[util.IdentifierKey]
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if !ok || len(identifierContent) < 1 {
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return 0, fmt.Errorf("no identifier found in metadata")
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}
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identifier, err := strconv.ParseInt(identifierContent[0], 10, 64)
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if err != nil {
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return 0, fmt.Errorf("failed to parse identifier: %s, error: %s", identifierContent[0], err.Error())
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}
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return identifier, nil
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}
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func KeepActiveInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
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// We shouldn't block the normal rpc. though this may be not very accurate enough.
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// On the other hand, too many goroutines will also influence the rpc.
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// Not sure which way is better, since actually we already make the `keepActive` asynchronous.
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go func() {
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identifier, err := getIdentifierFromContext(ctx)
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if err == nil && funcutil.CheckCtxValid(ctx) {
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GetConnectionManager().keepActive(identifier)
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}
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}()
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return handler(ctx, req)
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}
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