Golang Server.SelectProfile示例

示例#1

// selectProfile selects the Profile for the given query parameters, adds the
// Profile to the ctx, and calls the next handler. The next handler should
// handle a missing profile.
func (s *Server) selectProfile(core server.Server, next ContextHandler) ContextHandler {
	fn := func(ctx context.Context, w http.ResponseWriter, req *http.Request) {
		attrs := labelsFromRequest(s.logger, req)
		// match machine request
		profile, err := core.SelectProfile(ctx, &pb.SelectProfileRequest{Labels: attrs})
		if err == nil {
			// add the Profile to the ctx for the next handler
			ctx = withProfile(ctx, profile)
		}
		next.ServeHTTP(ctx, w, req)
	}
	return ContextHandlerFunc(fn)
}