iox-#1036 Make 'MessageQueue' and 'UnixDomainSocket' non-nullable

iceoryx_dust/include/iceoryx_dust/posix_wrapper/message_queue.hpp

@@ -56,11 +56,7 @@ class MessageQueue
     static constexpr uint64_t MAX_MESSAGE_SIZE = 4096;
     static constexpr uint64_t MAX_MESSAGE_NUMBER = 10;
 
-    /// @todo iox-#1036 Remove when all channels are ported to the builder pattern
-    /// default constructor. The result is an invalid MessageQueue object which can be reassigned later by using the
-    /// move constructor.
-    MessageQueue() noexcept = default;
-
+    MessageQueue() noexcept = delete;
     MessageQueue(const MessageQueue& other) = delete;
     MessageQueue(MessageQueue&& other) noexcept;
     MessageQueue& operator=(const MessageQueue& other) = delete;

iceoryx_hoofs/include/iceoryx_hoofs/internal/posix_wrapper/unix_domain_socket.hpp

@@ -50,11 +50,7 @@ class UnixDomainSocket
     using result_t = expected<UnixDomainSocket, IpcChannelError>;
     using errorType_t = IpcChannelError;
 
-    /// @brief default constructor. The result is an invalid UnixDomainSocket object which can be reassigned later by
-    /// using the
-    /// move constructor.
-    UnixDomainSocket() noexcept = default;
-
+    UnixDomainSocket() noexcept = delete;
     UnixDomainSocket(const UnixDomainSocket& other) = delete;
     UnixDomainSocket(UnixDomainSocket&& other) noexcept;
     UnixDomainSocket& operator=(const UnixDomainSocket& other) = delete;

iceoryx_hoofs/test/moduletests/test_unix_domain_sockets.cpp

@@ -52,15 +52,6 @@ class UnixDomainSocket_test : public Test
   public:
     void SetUp() override
     {
-        auto serverResult = UnixDomainSocket::create(
-            goodName, IpcChannelSide::SERVER, UnixDomainSocket::MAX_MESSAGE_SIZE, MaxMsgNumber);
-        ASSERT_THAT(serverResult.has_error(), Eq(false));
-        server = std::move(serverResult.value());
-
-        auto clientResult = UnixDomainSocket::create(
-            goodName, IpcChannelSide::CLIENT, UnixDomainSocket::MAX_MESSAGE_SIZE, MaxMsgNumber);
-        ASSERT_THAT(clientResult.has_error(), Eq(false));
-        client = std::move(clientResult.value());
     }
 
     void TearDown() override
@@ -118,8 +109,12 @@ class UnixDomainSocket_test : public Test
     const std::chrono::milliseconds WAIT_IN_MS{10};
     std::atomic_bool doWaitForThread{true};
     static constexpr uint64_t MaxMsgNumber = 10U;
-    UnixDomainSocket server;
-    UnixDomainSocket client;
+    UnixDomainSocket server{
+        UnixDomainSocket::create(goodName, IpcChannelSide::SERVER, UnixDomainSocket::MAX_MESSAGE_SIZE, MaxMsgNumber)
+            .expect("Valid UnixDomainSocket")};
+    UnixDomainSocket client{
+        UnixDomainSocket::create(goodName, IpcChannelSide::CLIENT, UnixDomainSocket::MAX_MESSAGE_SIZE, MaxMsgNumber)
+            .expect("Valid UnixDomainSocket")};
 };
 
 constexpr uint64_t UnixDomainSocket_test::MaxMsgNumber;

iceoryx_posh/include/iceoryx_posh/internal/runtime/ipc_interface_base.hpp

@@ -29,6 +29,7 @@
 #include "iceoryx_posh/internal/runtime/ipc_message.hpp"
 #include "iox/deadline_timer.hpp"
 #include "iox/duration.hpp"
+#include "iox/optional.hpp"
 #include "iox/relative_pointer.hpp"
 
 #include "iceoryx_dust/posix_wrapper/message_queue.hpp"
@@ -265,7 +266,7 @@ class IpcInterface
     uint64_t m_maxMessageSize{0U};
     uint64_t m_maxMessages{0U};
     iox::posix::IpcChannelSide m_channelSide{posix::IpcChannelSide::CLIENT};
-    IpcChannelType m_ipcChannel;
+    optional<IpcChannelType> m_ipcChannel;
 };
 
 using IpcInterfaceBase = IpcInterface<platform::IoxIpcChannelType>;

iceoryx_posh/source/runtime/ipc_interface_base.cpp

@@ -78,7 +78,7 @@ IpcInterface<IpcChannelType>::IpcInterface(const RuntimeName_t& runtimeName,
 template <typename IpcChannelType>
 bool IpcInterface<IpcChannelType>::receive(IpcMessage& answer) const noexcept
 {
-    auto message = m_ipcChannel.receive();
+    auto message = m_ipcChannel->receive();
     if (message.has_error())
     {
         return false;
@@ -90,7 +90,7 @@ bool IpcInterface<IpcChannelType>::receive(IpcMessage& answer) const noexcept
 template <typename IpcChannelType>
 bool IpcInterface<IpcChannelType>::timedReceive(const units::Duration timeout, IpcMessage& answer) const noexcept
 {
-    return !m_ipcChannel.timedReceive(timeout)
+    return !m_ipcChannel->timedReceive(timeout)
                 .and_then([&answer](auto& message) {
                     IpcInterface<IpcChannelType>::setMessageFromString(message.c_str(), answer);
                 })
@@ -127,7 +127,7 @@ bool IpcInterface<IpcChannelType>::send(const IpcMessage& msg) const noexcept
             IOX_LOG(ERROR) << "msg size of " << messageSize << " bigger than configured max message size";
         }
     };
-    return !m_ipcChannel.send(msg.getMessage()).or_else(logLengthError).has_error();
+    return !m_ipcChannel->send(msg.getMessage()).or_else(logLengthError).has_error();
 }
 
 template <typename IpcChannelType>
@@ -147,7 +147,7 @@ bool IpcInterface<IpcChannelType>::timedSend(const IpcMessage& msg, units::Durat
             IOX_LOG(ERROR) << "msg size of " << messageSize << " bigger than configured max message size";
         }
     };
-    return !m_ipcChannel.timedSend(msg.getMessage(), timeout).or_else(logLengthError).has_error();
+    return !m_ipcChannel->timedSend(msg.getMessage(), timeout).or_else(logLengthError).has_error();
 }
 
 template <typename IpcChannelType>
@@ -159,20 +159,20 @@ const RuntimeName_t& IpcInterface<IpcChannelType>::getRuntimeName() const noexce
 template <typename IpcChannelType>
 bool IpcInterface<IpcChannelType>::isInitialized() const noexcept
 {
-    return m_ipcChannel.isInitialized();
+    return m_ipcChannel->isInitialized();
 }
 
 template <typename IpcChannelType>
 bool IpcInterface<IpcChannelType>::openIpcChannel(const posix::IpcChannelSide channelSide) noexcept
 {
     m_channelSide = channelSide;
     IpcChannelType::create(m_runtimeName, m_channelSide, m_maxMessageSize, m_maxMessages)
-        .and_then([this](auto& ipcChannel) { this->m_ipcChannel = std::move(ipcChannel); })
+        .and_then([this](auto& ipcChannel) { this->m_ipcChannel.emplace(std::move(ipcChannel)); })
         .or_else([](auto& err) {
             IOX_LOG(ERROR) << "unable to create ipc channel with error code: " << static_cast<uint8_t>(err);
         });
 
-    return m_ipcChannel.isInitialized();
+    return m_ipcChannel->isInitialized();
 }
 
 template <typename IpcChannelType>
@@ -184,7 +184,7 @@ bool IpcInterface<IpcChannelType>::reopen() noexcept
 template <typename IpcChannelType>
 bool IpcInterface<IpcChannelType>::ipcChannelMapsToFile() noexcept
 {
-    return !m_ipcChannel.isOutdated().value_or(true);
+    return !m_ipcChannel->isOutdated().value_or(true);
 }
 
 template <>
@@ -202,7 +202,7 @@ bool IpcInterface<posix::NamedPipe>::ipcChannelMapsToFile() noexcept
 template <typename IpcChannelType>
 bool IpcInterface<IpcChannelType>::hasClosableIpcChannel() const noexcept
 {
-    return m_ipcChannel.isInitialized();
+    return m_ipcChannel->isInitialized();
 }
 
 template <typename IpcChannelType>

iceoryx_posh/test/integrationtests/test_mq_interface_startup_race.cpp

@@ -59,14 +59,9 @@ class StringToMessage : public IpcInterfaceBase
 class CMqInterfaceStartupRace_test : public Test
 {
   public:
-    CMqInterfaceStartupRace_test()
-        : m_appQueue{platform::IoxIpcChannelType::create()}
-    {
-    }
-
     virtual void SetUp()
     {
-        ASSERT_THAT(m_roudiQueue.has_error(), false);
+        ASSERT_THAT(m_roudiQueue.has_value(), true);
     }
     virtual void TearDown()
     {
@@ -102,11 +97,13 @@ class CMqInterfaceStartupRace_test : public Test
         regAck << IpcMessageTypeToString(IpcMessageType::REG_ACK) << DUMMY_SHM_SIZE << DUMMY_SHM_OFFSET
                << oldMsg.getElementAtIndex(INDEX_OF_TIMESTAMP) << DUMMY_SEGMENT_ID << SEND_KEEP_ALIVE;
 
-        if (m_appQueue.has_error())
+        if (!m_appQueue.has_value())
         {
-            m_appQueue = platform::IoxIpcChannelType::create(MqAppName, IpcChannelSide::CLIENT);
+            platform::IoxIpcChannelType::create(MqAppName, IpcChannelSide::CLIENT).and_then([this](auto& channel) {
+                this->m_appQueue.emplace(std::move(channel));
+            });
         }
-        ASSERT_THAT(m_appQueue.has_error(), false);
+        ASSERT_THAT(m_appQueue.has_value(), true);
 
         ASSERT_FALSE(m_appQueue->send(regAck.getMessage()).has_error());
     }
@@ -116,7 +113,7 @@ class CMqInterfaceStartupRace_test : public Test
     platform::IoxIpcChannelType::result_t m_roudiQueue{
         platform::IoxIpcChannelType::create(roudi::IPC_CHANNEL_ROUDI_NAME, IpcChannelSide::SERVER)};
     std::mutex m_appQueueMutex;
-    platform::IoxIpcChannelType::result_t m_appQueue;
+    optional<platform::IoxIpcChannelType> m_appQueue;
 };
 
 #if !defined(__APPLE__)