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dfe0416a70
issue: #33285 - implement producing and consuming server of message - implement management operation for streaming node server --------- Signed-off-by: chyezh <chyezh@outlook.com>
52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
package contextutil
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import (
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"context"
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"encoding/base64"
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"fmt"
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"github.com/cockroachdb/errors"
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"github.com/golang/protobuf/proto"
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"google.golang.org/grpc/metadata"
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"github.com/milvus-io/milvus/internal/proto/streamingpb"
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)
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const (
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createProducerKey = "create-producer"
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)
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// WithCreateProducer attaches create producer request to context.
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func WithCreateProducer(ctx context.Context, req *streamingpb.CreateProducerRequest) context.Context {
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bytes, err := proto.Marshal(req)
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if err != nil {
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panic(fmt.Sprintf("unreachable: marshal create producer request failed, %+v", err))
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}
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// use base64 encoding to transfer binary to text.
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msg := base64.StdEncoding.EncodeToString(bytes)
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return metadata.AppendToOutgoingContext(ctx, createProducerKey, msg)
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}
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// GetCreateProducer gets create producer request from context.
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func GetCreateProducer(ctx context.Context) (*streamingpb.CreateProducerRequest, error) {
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md, ok := metadata.FromIncomingContext(ctx)
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if !ok {
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return nil, errors.New("create producer metadata not found from incoming context")
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}
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msg := md.Get(createProducerKey)
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if len(msg) == 0 {
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return nil, errors.New("create consumer metadata not found")
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}
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bytes, err := base64.StdEncoding.DecodeString(msg[0])
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if err != nil {
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return nil, errors.Wrap(err, "decode create consumer metadata failed")
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}
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req := &streamingpb.CreateProducerRequest{}
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if err := proto.Unmarshal(bytes, req); err != nil {
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return nil, errors.Wrap(err, "unmarshal create producer request failed")
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}
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return req, nil
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}
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