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https://issues.apache.org/jira/browse/THRIFT-2075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konrad Grochowski updated THRIFT-2075:
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Issue Type: New Feature (was: Improvement)
> C++ async client project
> ------------------------
>
> Key: THRIFT-2075
> URL: https://issues.apache.org/jira/browse/THRIFT-2075
> Project: Thrift
> Issue Type: New Feature
> Components: C++ - Compiler, C++ - Library
> Reporter: Konrad Grochowski
>
> What do you think about such iface for async c++ client?
> {code}
> service Serv
> {
> X fun(1: Y y)
> }
> {code}
> {code}
> class ServAsyncClient
> {
> boost::future<X> fun(const Y& y);
> };
> {code}
> it could be implemented as a wrapper around "normal" client - just a blocking
> queue of boost::package_tasks and one thread executing it one by one.
> This would work best with C++11 support (move semantics and lambdas could be
> used).
> I've made wrapper for generated clients but such wrapper requires a lot of
> hand work ;)
> example:
> {code}
> class AsyncClient
> {
> public:
> AsyncClient(SyncClient* cli)
> : cli(cli) {}
> boost::future<X> fun(const Y& y)
> {
> addTask([this, y]() { return cli->fun(y); });
> }
> private:
> blocking_queue<boost::function<void()> queue;
> template<typename Functor>
> boost::future<typename boost::result_of<Functor()>::type>
> addTask(Functor&& functor)
> {
> typedef typename boost::result_of<Functor()>::type result_type;
> typedef typename boost::packaged_task<result_type> task_type;
> typedef typename boost::shared_ptr<task_type> ptr_type;
> ptr_type ptr(new boost::packaged_task<result_type>(std::move(functor)));
> auto f = ptr->get_future();
> queue.push_back([ptr]{ (*ptr)(); });
> return f;
> }
> // ....
> };
> {code}
> originally I used boost::asio, which enables me to schedules some tasks to be
> executed periodically (like ping) etc.
> I haven't tested it yet enough but I could look into possibilities of adding
> new option to thrift compiler if such contribution would be anticipated ;)
> I can also send my boost.asio based wrapper for anyone who would like to
> write own async wrapper
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