debian-mirror-gitlab/workhorse-vendor/github.com/grpc-ecosystem/go-grpc-middleware/wrappers.go

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2021-04-17 20:07:23 +05:30
// Copyright 2016 Michal Witkowski. All Rights Reserved.
// See LICENSE for licensing terms.
package grpc_middleware
import (
"golang.org/x/net/context"
"google.golang.org/grpc"
)
// WrappedServerStream is a thin wrapper around grpc.ServerStream that allows modifying context.
type WrappedServerStream struct {
grpc.ServerStream
// WrappedContext is the wrapper's own Context. You can assign it.
WrappedContext context.Context
}
// Context returns the wrapper's WrappedContext, overwriting the nested grpc.ServerStream.Context()
func (w *WrappedServerStream) Context() context.Context {
return w.WrappedContext
}
// WrapServerStream returns a ServerStream that has the ability to overwrite context.
func WrapServerStream(stream grpc.ServerStream) *WrappedServerStream {
if existing, ok := stream.(*WrappedServerStream); ok {
return existing
}
return &WrappedServerStream{ServerStream: stream, WrappedContext: stream.Context()}
}