/
grpc_auth.go
61 lines (49 loc) · 1.95 KB
/
grpc_auth.go
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package middleware
import (
"golang.org/x/net/context"
"google.golang.org/grpc"
"github.com/weaveworks/common/user"
)
// ClientUserHeaderInterceptor propagates the user ID from the context to gRPC metadata, which eventually ends up as a HTTP2 header.
func ClientUserHeaderInterceptor(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
ctx, err := user.InjectIntoGRPCRequest(ctx)
if err != nil {
return err
}
return invoker(ctx, method, req, reply, cc, opts...)
}
// StreamClientUserHeaderInterceptor propagates the user ID from the context to gRPC metadata, which eventually ends up as a HTTP2 header.
// For streaming gRPC requests.
func StreamClientUserHeaderInterceptor(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
ctx, err := user.InjectIntoGRPCRequest(ctx)
if err != nil {
return nil, err
}
return streamer(ctx, desc, cc, method, opts...)
}
// ServerUserHeaderInterceptor propagates the user ID from the gRPC metadata back to our context.
func ServerUserHeaderInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
_, ctx, err := user.ExtractFromGRPCRequest(ctx)
if err != nil {
return nil, err
}
return handler(ctx, req)
}
// StreamServerUserHeaderInterceptor propagates the user ID from the gRPC metadata back to our context.
func StreamServerUserHeaderInterceptor(srv interface{}, ss grpc.ServerStream, _ *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
_, ctx, err := user.ExtractFromGRPCRequest(ss.Context())
if err != nil {
return err
}
return handler(srv, serverStream{
ctx: ctx,
ServerStream: ss,
})
}
type serverStream struct {
ctx context.Context
grpc.ServerStream
}
func (ss serverStream) Context() context.Context {
return ss.ctx
}