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feat(transport): add grpc client stream interceptor opts #2610

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Jan 16, 2023
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feat(transport): add grpc client stream interceptor opts #2610

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11 changes: 11 additions & 0 deletions transport/grpc/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -74,6 +74,13 @@ func WithUnaryInterceptor(in ...grpc.UnaryClientInterceptor) ClientOption {
}
}

// WithStreamInterceptor returns a DialOption that specifies the interceptor for streaming RPCs.
func WithStreamInterceptor(in ...grpc.StreamClientInterceptor) ClientOption {
return func(o *clientOptions) {
o.streamInts = in
}
}

// WithOptions with gRPC options.
func WithOptions(opts ...grpc.DialOption) ClientOption {
return func(o *clientOptions) {
Expand Down Expand Up @@ -102,6 +109,7 @@ type clientOptions struct {
discovery registry.Discovery
middleware []middleware.Middleware
ints []grpc.UnaryClientInterceptor
streamInts []grpc.StreamClientInterceptor
grpcOpts []grpc.DialOption
balancerName string
filters []selector.NodeFilter
Expand Down Expand Up @@ -135,6 +143,9 @@ func dial(ctx context.Context, insecure bool, opts ...ClientOption) (*grpc.Clien
grpc.WithDefaultServiceConfig(fmt.Sprintf(`{"loadBalancingConfig": [{"%s":{}}]}`, options.balancerName)),
grpc.WithChainUnaryInterceptor(ints...),
}
if len(options.streamInts) > 0 {
grpcOpts = append(grpcOpts, grpc.WithChainStreamInterceptor(options.streamInts...))
}
if options.discovery != nil {
grpcOpts = append(grpcOpts,
grpc.WithResolvers(
Expand Down