LCOV - code coverage report
Current view: top level - include/hpactor - spawn.hpp (source / functions) Coverage Total Hit
Test: HPActor Coverage Lines: 50.0 % 6 3
Test Date: 2026-05-20 02:24:49 Functions: 50.0 % 2 1
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: - 0 0

             Branch data     Line data    Source code
       1                 :             : // Copyright 2026 HPActor Contributors
       2                 :             : //
       3                 :             : // Licensed under the Apache License, Version 2.0 (the "License");
       4                 :             : // you may not use this file except in compliance with the License.
       5                 :             : // You may obtain a copy of the License at
       6                 :             : //
       7                 :             : //     http://www.apache.org/licenses/LICENSE-2.0
       8                 :             : //
       9                 :             : // Unless required by applicable law or agreed to in writing, software
      10                 :             : // distributed under the License is distributed on an "AS IS" BASIS,
      11                 :             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12                 :             : // See the License for the specific language governing permissions and
      13                 :             : // limitations under the License.
      14                 :             : 
      15                 :             : #pragma once
      16                 :             : 
      17                 :             : #include <hpactor/core/actor_system_ids.hpp>
      18                 :             : #include <hpactor/ref/actor_address.hpp>
      19                 :             : #include <hpactor/ref/actor_ref.hpp>
      20                 :             : #include <hpactor/types/types.hpp>
      21                 :             : 
      22                 :             : #include <condition_variable>
      23                 :             : #include <memory>
      24                 :             : #include <mutex>
      25                 :             : #include <variant>
      26                 :             : 
      27                 :             : namespace hpactor {
      28                 :             : 
      29                 :             : // -----------------------------------------------------------------------------
      30                 :             : // Spawn-specific error codes (separate from general errors namespace)
      31                 :             : // -----------------------------------------------------------------------------
      32                 :             : namespace spawn_errors {
      33                 :             : constexpr uint32_t success = 0;
      34                 :             : constexpr uint32_t unknown_type = 1;
      35                 :             : constexpr uint32_t deserialization_failed = 2;
      36                 :             : constexpr uint32_t node_unreachable = 3;
      37                 :             : constexpr uint32_t timeout = 4;
      38                 :             : constexpr uint32_t spawn_receiver_not_running = 5;
      39                 :             : } // namespace spawn_errors
      40                 :             : 
      41                 :             : // -----------------------------------------------------------------------------
      42                 :             : // SpawnRequest - sent from caller to spawn receiver on remote node
      43                 :             : // Serialized via protobuf messages in messages.proto
      44                 :             : // -----------------------------------------------------------------------------
      45                 :             : struct SpawnRequest {
      46                 :             :     std::string actor_type_name;  // e.g., "calculator"
      47                 :             :     TypeTag args_type;            // type tag for deserializing args
      48                 :             :     StreamBuffer serialized_args;        // type-erased constructor arguments
      49                 :             :     ActorAddress supervisor_addr; // supervisor's address for link establishment
      50                 :             : };
      51                 :             : 
      52                 :             : // -----------------------------------------------------------------------------
      53                 :             : // SpawnResponse - sent back from spawn receiver to caller
      54                 :             : // Serialized via protobuf messages in messages.proto
      55                 :             : // -----------------------------------------------------------------------------
      56                 :             : struct SpawnResponse {
      57                 :             :     ActorAddress actor_addr; // new actor's address (node_id, type, id,
      58                 :             :                              // incarnation)
      59                 :             :     uint32_t error_code;     // spawn_errors::code
      60                 :             : };
      61                 :             : 
      62                 :             : // -----------------------------------------------------------------------------
      63                 :             : // -----------------------------------------------------------------------------
      64                 :             : // AsyncActor - handle for asynchronous remote spawn
      65                 :             : // -----------------------------------------------------------------------------
      66                 :             : // Allows non-blocking spawn with result retrieval via get().
      67                 :             : // WARNING: get() blocks the calling thread.
      68                 :             : class AsyncActor {
      69                 :             :   public:
      70                 :             :     AsyncActor();
      71                 :             :     AsyncActor(AsyncActor&& other) noexcept;
      72                 :             :     AsyncActor& operator=(AsyncActor&& other) noexcept;
      73                 :             : 
      74                 :             :     // Construct with node_id and timeout
      75                 :             :     AsyncActor(EndPoint endpoint, std::chrono::milliseconds timeout);
      76                 :             : 
      77                 :             :     // Wait for response and return result (blocks until response or timeout)
      78                 :             :     result<ActorRef> get();
      79                 :             : 
      80                 :             :     // Check if response received (non-blocking)
      81                 :             :     bool ready() const;
      82                 :             : 
      83                 :             :     // Cancel pending spawn
      84                 :             :     void cancel();
      85                 :             : 
      86                 :             :     // Get associated node ID
      87                 :           2 :     EndPoint endpoint() const {
      88                 :           2 :         return endpoint_;
      89                 :             :     }
      90                 :             : 
      91                 :             :     // Set response (called by transport layer when response received)
      92                 :             :     void set_response(SpawnResponse response);
      93                 :             : 
      94                 :             :     // Message ID for correlation with response
      95                 :           0 :     void set_message_id(uint64_t id) {
      96                 :           0 :         message_id_ = id;
      97                 :           0 :     }
      98                 :             :     uint64_t message_id() const {
      99                 :             :         return message_id_;
     100                 :             :     }
     101                 :             : 
     102                 :             :   private:
     103                 :             :     EndPoint endpoint_ = LocalEndpoint;
     104                 :           1 :     std::chrono::milliseconds timeout_{5000};
     105                 :             :     mutable std::unique_ptr<std::mutex> mutex_;
     106                 :             :     std::unique_ptr<std::condition_variable> cv_;
     107                 :             :     bool ready_ = false;
     108                 :             :     bool cancelled_ = false;
     109                 :             :     SpawnResponse response_{};
     110                 :             :     uint64_t message_id_ = 0; // For correlation with response
     111                 :             : };
     112                 :             : 
     113                 :             : } // namespace hpactor
        

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