Use LambdaPromise instead of PromiseActor.

td

@@ -1 +1 @@
-Subproject commit b393215d6671863b6baf2a589d343cff9474f6ba
+Subproject commit 9a061c30c1f1928f12bdb3feb2108a8052b102be

telegram-bot-api/ClientManager.cpp

@@ -145,7 +145,7 @@ void ClientManager::send(PromisedQueryPtr query) {
                std::move(query));  // will send 429 if the client is already closed
 }
 
-void ClientManager::get_stats(td::PromiseActor<td::BufferSlice> promise,
+void ClientManager::get_stats(td::Promise<td::BufferSlice> promise,
                               td::vector<std::pair<td::string, td::string>> args) {
   if (close_flag_) {
     promise.set_value(td::BufferSlice("Closing"));
@@ -394,7 +394,7 @@ PromisedQueryPtr ClientManager::get_webhook_restore_query(td::Slice token, td::S
   auto query = td::make_unique<Query>(std::move(containers), token, is_test_dc, method, std::move(args),
                                       td::vector<std::pair<td::MutableSlice, td::MutableSlice>>(),
                                       td::vector<td::HttpFile>(), std::move(shared_data), td::IPAddress(), true);
-  return PromisedQueryPtr(query.release(), PromiseDeleter(td::PromiseActor<td::unique_ptr<Query>>()));
+  return PromisedQueryPtr(query.release(), PromiseDeleter(td::Promise<td::unique_ptr<Query>>()));
 }
 
 void ClientManager::raw_event(const td::Event::Raw &event) {

telegram-bot-api/ClientManager.h

@@ -43,7 +43,7 @@ class ClientManager final : public td::Actor {
 
   void send(PromisedQueryPtr query);
 
-  void get_stats(td::PromiseActor<td::BufferSlice> promise, td::vector<std::pair<td::string, td::string>> args);
+  void get_stats(td::Promise<td::BufferSlice> promise, td::vector<std::pair<td::string, td::string>> args);
 
   void close(td::Promise<td::Unit> &&promise);
 

telegram-bot-api/HttpConnection.cpp

@@ -48,22 +48,17 @@ void HttpConnection::handle(td::unique_ptr<td::HttpQuery> http_query,
                                       std::move(http_query->args_), std::move(http_query->headers_),
                                       std::move(http_query->files_), shared_data_, http_query->peer_address_, false);
 
-  td::PromiseActor<td::unique_ptr<Query>> promise;
-  td::FutureActor<td::unique_ptr<Query>> future;
-  td::init_promise_future(&promise, &future);
-  future.set_event(td::EventCreator::yield(actor_id()));
+  auto promise = td::PromiseCreator::lambda([actor_id = actor_id(this)](td::Result<td::unique_ptr<Query>> r_query) {
+    send_closure(actor_id, &HttpConnection::on_query_finished, std::move(r_query));
+  });
   auto promised_query = PromisedQueryPtr(query.release(), PromiseDeleter(std::move(promise)));
   send_closure(client_manager_, &ClientManager::send, std::move(promised_query));
-  result_ = std::move(future);
 }
 
-void HttpConnection::wakeup() {
-  if (result_.empty()) {
-    return;
-  }
-  LOG_CHECK(result_.is_ok()) << result_.move_as_error();
+void HttpConnection::on_query_finished(td::Result<td::unique_ptr<Query>> r_query) {
+  LOG_CHECK(r_query.is_ok()) << r_query.error();
 
-  auto query = result_.move_as_ok();
+  auto query = r_query.move_as_ok();
   send_response(query->http_status_code(), std::move(query->answer()), query->retry_after());
 }
 

telegram-bot-api/HttpConnection.h

@@ -32,10 +32,7 @@ class HttpConnection final : public td::HttpInboundConnection::Callback {
 
   void handle(td::unique_ptr<td::HttpQuery> http_query, td::ActorOwn<td::HttpInboundConnection> connection) final;
 
-  void wakeup() final;
-
  private:
-  td::FutureActor<td::unique_ptr<Query>> result_;
   td::ActorId<ClientManager> client_manager_;
   td::ActorOwn<td::HttpInboundConnection> connection_;
   std::shared_ptr<SharedData> shared_data_;
@@ -45,6 +42,8 @@ class HttpConnection final : public td::HttpInboundConnection::Callback {
     stop();
   }
 
+  void on_query_finished(td::Result<td::unique_ptr<Query>> r_query);
+
   void send_response(int http_status_code, td::BufferSlice &&content, int retry_after);
 
   void send_http_error(int http_status_code, td::Slice description);

telegram-bot-api/HttpStatConnection.cpp

@@ -18,22 +18,20 @@ void HttpStatConnection::handle(td::unique_ptr<td::HttpQuery> http_query,
   CHECK(connection_->empty());
   connection_ = std::move(connection);
 
-  td::PromiseActor<td::BufferSlice> promise;
-  td::FutureActor<td::BufferSlice> future;
-  init_promise_future(&promise, &future);
-  future.set_event(td::EventCreator::yield(actor_id()));
-  LOG(DEBUG) << "SEND";
+  auto promise = td::PromiseCreator::lambda([actor_id = actor_id(this)](td::Result<td::BufferSlice> result) {
+    send_closure(actor_id, &HttpStatConnection::on_result, std::move(result));
+  });
   send_closure(client_manager_, &ClientManager::get_stats, std::move(promise), http_query->get_args());
-  result_ = std::move(future);
 }
 
-void HttpStatConnection::wakeup() {
-  if (result_.empty()) {
+void HttpStatConnection::on_result(td::Result<td::BufferSlice> result) {
+  if (result.is_error()) {
+    send_closure(connection_.release(), &td::HttpInboundConnection::write_error,
+                 td::Status::Error(500, "Internal Server Error: closing"));
     return;
   }
-  LOG_CHECK(result_.is_ok()) << result_.move_as_error();
 
-  auto content = result_.move_as_ok();
+  auto content = result.move_as_ok();
   td::HttpHeaderCreator hc;
   hc.init_status_line(200);
   hc.set_keep_alive();

telegram-bot-api/HttpStatConnection.h

@@ -12,9 +12,9 @@
 #include "td/net/HttpQuery.h"
 
 #include "td/actor/actor.h"
-#include "td/actor/PromiseFuture.h"
 
 #include "td/utils/buffer.h"
+#include "td/utils/Status.h"
 
 namespace telegram_bot_api {
 
@@ -22,15 +22,15 @@ class HttpStatConnection final : public td::HttpInboundConnection::Callback {
  public:
   explicit HttpStatConnection(td::ActorId<ClientManager> client_manager) : client_manager_(client_manager) {
   }
+
   void handle(td::unique_ptr<td::HttpQuery> http_query, td::ActorOwn<td::HttpInboundConnection> connection) final;
 
-  void wakeup() final;
-
  private:
-  td::FutureActor<td::BufferSlice> result_;
   td::ActorId<ClientManager> client_manager_;
   td::ActorOwn<td::HttpInboundConnection> connection_;
 
+  void on_result(td::Result<td::BufferSlice> result);
+
   void hangup() final {
     connection_.release();
     stop();

telegram-bot-api/Query.h

@@ -227,7 +227,7 @@ class JsonQueryError final : public td::Jsonable {
 
 class PromiseDeleter {
  public:
-  explicit PromiseDeleter(td::PromiseActor<td::unique_ptr<Query>> &&promise) : promise_(std::move(promise)) {
+  explicit PromiseDeleter(td::Promise<td::unique_ptr<Query>> &&promise) : promise_(std::move(promise)) {
   }
   PromiseDeleter() = default;
   PromiseDeleter(const PromiseDeleter &) = delete;
@@ -236,7 +236,7 @@ class PromiseDeleter {
   PromiseDeleter &operator=(PromiseDeleter &&) = default;
   void operator()(Query *raw_ptr) {
     td::unique_ptr<Query> query(raw_ptr);  // now I cannot forget to delete this pointer
-    if (!promise_.empty_promise()) {
+    if (promise_) {
       if (!query->is_ready()) {
         query->set_retry_after_error(5);
       }
@@ -245,11 +245,11 @@ class PromiseDeleter {
     }
   }
   ~PromiseDeleter() {
-    CHECK(promise_.empty());
+    CHECK(!promise_);
   }
 
  private:
-  td::PromiseActor<td::unique_ptr<Query>> promise_;
+  td::Promise<td::unique_ptr<Query>> promise_;
 };
 using PromisedQueryPtr = std::unique_ptr<Query, PromiseDeleter>;
 

telegram-bot-api/WebhookActor.cpp

@@ -82,7 +82,7 @@ void WebhookActor::relax_wakeup_at(double wakeup_at, const char *source) {
 }
 
 void WebhookActor::resolve_ip_address() {
-  if (fix_ip_address_) {
+  if (fix_ip_address_ || is_ip_address_being_resolved_) {
     return;
   }
   if (td::Time::now() < next_ip_address_resolve_time_) {
@@ -90,43 +90,42 @@ void WebhookActor::resolve_ip_address() {
     return;
   }
 
-  bool future_created = false;
-  if (future_ip_address_.empty()) {
-    td::PromiseActor<td::IPAddress> promise;
-    init_promise_future(&promise, &future_ip_address_);
-    future_created = true;
-    send_closure(parameters_->get_host_by_name_actor_id_, &td::GetHostByNameActor::run, url_.host_, url_.port_, false,
-                 td::PromiseCreator::from_promise_actor(std::move(promise)));
+  is_ip_address_being_resolved_ = true;
+  auto promise = td::PromiseCreator::lambda([actor_id = actor_id(this)](td::Result<td::IPAddress> r_ip_address) {
+    send_closure(actor_id, &WebhookActor::on_resolved_ip_address, std::move(r_ip_address));
+  });
+  send_closure(parameters_->get_host_by_name_actor_id_, &td::GetHostByNameActor::run, url_.host_, url_.port_, false,
+               std::move(promise));
+}
+
+void WebhookActor::on_resolved_ip_address(td::Result<td::IPAddress> r_ip_address) {
+  CHECK(is_ip_address_being_resolved_);
+  is_ip_address_being_resolved_ = false;
+
+  next_ip_address_resolve_time_ =
+      td::Time::now() + IP_ADDRESS_CACHE_TIME + td::Random::fast(0, IP_ADDRESS_CACHE_TIME / 10);
+  relax_wakeup_at(next_ip_address_resolve_time_, "on_resolved_ip_address");
+
+  SCOPE_EXIT {
+    loop();
+  };
+
+  if (r_ip_address.is_error()) {
+    return on_error(r_ip_address.move_as_error());
   }
-
-  if (future_ip_address_.is_ready()) {
-    next_ip_address_resolve_time_ =
-        td::Time::now() + IP_ADDRESS_CACHE_TIME + td::Random::fast(0, IP_ADDRESS_CACHE_TIME / 10);
-    relax_wakeup_at(next_ip_address_resolve_time_, "resolve_ip_address");
-
-    auto r_ip_address = future_ip_address_.move_as_result();
-    if (r_ip_address.is_error()) {
-      CHECK(!(r_ip_address.error() == td::Status::Error<td::FutureActor<td::IPAddress>::HANGUP_ERROR_CODE>()));
-      return on_error(r_ip_address.move_as_error());
-    }
-    auto new_ip_address = r_ip_address.move_as_ok();
-    if (!check_ip_address(new_ip_address)) {
-      return on_error(td::Status::Error(PSLICE() << "IP address " << new_ip_address.get_ip_str() << " is reserved"));
-    }
-    if (!(ip_address_ == new_ip_address)) {
-      VLOG(webhook) << "IP address has changed: " << ip_address_ << " --> " << new_ip_address;
-      ip_address_ = new_ip_address;
-      ip_generation_++;
-      if (was_checked_) {
-        on_webhook_verified();
-      }
-    }
-    VLOG(webhook) << "IP address was verified";
-  } else {
-    if (future_created) {
-      future_ip_address_.set_event(td::EventCreator::yield(actor_id()));
+  auto new_ip_address = r_ip_address.move_as_ok();
+  if (!check_ip_address(new_ip_address)) {
+    return on_error(td::Status::Error(PSLICE() << "IP address " << new_ip_address.get_ip_str() << " is reserved"));
+  }
+  if (!(ip_address_ == new_ip_address)) {
+    VLOG(webhook) << "IP address has changed: " << ip_address_ << " --> " << new_ip_address;
+    ip_address_ = new_ip_address;
+    ip_generation_++;
+    if (was_checked_) {
+      on_webhook_verified();
     }
   }
+  VLOG(webhook) << "IP address was verified";
 }
 
 td::Status WebhookActor::create_connection() {
@@ -605,8 +604,7 @@ void WebhookActor::handle(td::unique_ptr<td::HttpQuery> response) {
                                               td::MutableSlice(), std::move(response->args_),
                                               std::move(response->headers_), std::move(response->files_),
                                               parameters_->shared_data_, response->peer_address_, false);
-          auto promised_query =
-              PromisedQueryPtr(query.release(), PromiseDeleter(td::PromiseActor<td::unique_ptr<Query>>()));
+          auto promised_query = PromisedQueryPtr(query.release(), PromiseDeleter(td::Promise<td::unique_ptr<Query>>()));
           send_closure(callback_, &Callback::send, std::move(promised_query));
         }
         first_error_410_time_ = 0;

telegram-bot-api/WebhookActor.h

@@ -137,7 +137,7 @@ class WebhookActor final : public td::HttpOutboundConnection::Callback {
   td::IPAddress ip_address_;
   td::int32 ip_generation_ = 0;
   double next_ip_address_resolve_time_ = 0;
-  td::FutureActor<td::IPAddress> future_ip_address_;
+  bool is_ip_address_being_resolved_ = false;
 
   class Connection final : public td::ListNode {
    public:
@@ -175,6 +175,7 @@ class WebhookActor final : public td::HttpOutboundConnection::Callback {
   void relax_wakeup_at(double wakeup_at, const char *source);
 
   void resolve_ip_address();
+  void on_resolved_ip_address(td::Result<td::IPAddress> r_ip_address);
 
   td::Result<td::SslStream> create_ssl_stream();
   td::Status create_connection() TD_WARN_UNUSED_RESULT;