forked from p93542168/wheat-cache
38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
package proxy
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import (
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"context"
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"gitee.com/wheat-os/wheatCache/gateway/codec"
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"gitee.com/wheat-os/wheatCache/gateway/endpoint"
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"gitee.com/wheat-os/wheatCache/pkg/proto"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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)
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func GetDirectorByServiceHash() StreamDirector {
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return func(ctx context.Context, fullMethodName string, endpoint endpoint.EndpointInterface) (context.Context, *grpc.ClientConn, error) {
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md, ok := metadata.FromIncomingContext(ctx)
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if !ok {
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return nil, nil, status.Errorf(codes.Unknown, "from FromIncomingContext err")
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}
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baseKey, ok := md[proto.BaseKeyMethodKey]
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if !ok {
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return nil, nil, status.Errorf(codes.Unknown,
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"grpc header is not found %s, please check the client interceptor", proto.BaseKeyMethodKey)
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}
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target, err := endpoint.GetTargetAddr(baseKey...)
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if err != nil {
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return nil, nil, status.Errorf(codes.Unknown, "get transport err, err:%v", err)
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}
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cli, err := grpc.DialContext(ctx, target, grpc.WithInsecure(), grpc.WithDefaultCallOptions(grpc.ForceCodec(codec.Codec())))
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return ctx, cli, err
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}
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}
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