IVGCVSW-4594 Refactor the GatordMockService and GatordMockMain to extract a BasePipeServer

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Change-Id: I03c1b46104dadc491dba6075865e486f78aa60fa
diff --git a/tests/profiling/gatordmock/GatordMockService.cpp b/tests/profiling/gatordmock/GatordMockService.cpp
index dbe4fb3..13f6882 100644
--- a/tests/profiling/gatordmock/GatordMockService.cpp
+++ b/tests/profiling/gatordmock/GatordMockService.cpp
@@ -13,7 +13,6 @@
 #include <armnn/utility/Assert.hpp>
 
 #include <cerrno>
-#include <fcntl.h>
 #include <iomanip>
 #include <iostream>
 #include <string>
@@ -26,97 +25,6 @@
 namespace gatordmock
 {
 
-bool GatordMockService::OpenListeningSocket(armnnUtils::Sockets::Socket listeningSocket,
-                                            const std::string udsNamespace,
-                                            const int numOfConnections)
-{
-    if (-1 == listeningSocket)
-    {
-        std::cerr << ": Socket construction failed: " << strerror(errno) << std::endl;
-        return false;
-    }
-
-    sockaddr_un udsAddress;
-    memset(&udsAddress, 0, sizeof(sockaddr_un));
-    // We've set the first element of sun_path to be 0, skip over it and copy the namespace after it.
-    memcpy(udsAddress.sun_path + 1, udsNamespace.c_str(), strlen(udsNamespace.c_str()));
-    udsAddress.sun_family = AF_UNIX;
-
-    // Bind the socket to the UDS namespace.
-    if (-1 == bind(listeningSocket, reinterpret_cast<const sockaddr*>(&udsAddress), sizeof(sockaddr_un)))
-    {
-        std::cerr << ": Binding on socket failed: " << strerror(errno) << std::endl;
-        return false;
-    }
-    // Listen for 10 connections.
-    if (-1 == listen(listeningSocket, numOfConnections))
-    {
-        std::cerr << ": Listen call on socket failed: " << strerror(errno) << std::endl;
-        return false;
-    }
-    return true;
-}
-
-bool GatordMockService::WaitForStreamMetaData()
-{
-    if (m_EchoPackets)
-    {
-        std::cout << "Waiting for stream meta data..." << std::endl;
-    }
-    // The start of the stream metadata is 2x32bit words, 0 and packet length.
-    uint8_t header[8];
-    if (!ReadFromSocket(header, 8))
-    {
-        return false;
-    }
-    EchoPacket(PacketDirection::ReceivedHeader, header, 8);
-    // The first word, stream_metadata_identifer, should always be 0.
-    if (ToUint32(&header[0], TargetEndianness::BeWire) != 0)
-    {
-        std::cerr << ": Protocol error. The stream_metadata_identifer was not 0." << std::endl;
-        return false;
-    }
-
-    uint8_t pipeMagic[4];
-    if (!ReadFromSocket(pipeMagic, 4))
-    {
-        return false;
-    }
-    EchoPacket(PacketDirection::ReceivedData, pipeMagic, 4);
-
-    // Before we interpret the length we need to read the pipe_magic word to determine endianness.
-    if (ToUint32(&pipeMagic[0], TargetEndianness::BeWire) == PIPE_MAGIC)
-    {
-        m_Endianness = TargetEndianness::BeWire;
-    }
-    else if (ToUint32(&pipeMagic[0], TargetEndianness::LeWire) == PIPE_MAGIC)
-    {
-        m_Endianness = TargetEndianness::LeWire;
-    }
-    else
-    {
-        std::cerr << ": Protocol read error. Unable to read PIPE_MAGIC value." << std::endl;
-        return false;
-    }
-    // Now we know the endianness we can get the length from the header.
-    // Remember we already read the pipe magic 4 bytes.
-    uint32_t metaDataLength = ToUint32(&header[4], m_Endianness) - 4;
-    // Read the entire packet.
-    std::vector<uint8_t> packetData(metaDataLength);
-    if (metaDataLength !=
-        boost::numeric_cast<uint32_t>(Sockets::Read(m_ClientConnection, packetData.data(), metaDataLength)))
-    {
-        std::cerr << ": Protocol read error. Data length mismatch." << std::endl;
-        return false;
-    }
-    EchoPacket(PacketDirection::ReceivedData, packetData.data(), metaDataLength);
-    m_StreamMetaDataVersion    = ToUint32(&packetData[0], m_Endianness);
-    m_StreamMetaDataMaxDataLen = ToUint32(&packetData[4], m_Endianness);
-    m_StreamMetaDataPid        = ToUint32(&packetData[8], m_Endianness);
-
-    return true;
-}
-
 void GatordMockService::SendConnectionAck()
 {
     if (m_EchoPackets)
@@ -124,7 +32,7 @@
         std::cout << "Sending connection acknowledgement." << std::endl;
     }
     // The connection ack packet is an empty data packet with packetId == 1.
-    SendPacket(0, 1, nullptr, 0);
+    m_BasePipeServer.get()->SendPacket(0, 1, nullptr, 0);
 }
 
 void GatordMockService::SendRequestCounterDir()
@@ -134,7 +42,7 @@
         std::cout << "Sending connection acknowledgement." << std::endl;
     }
     // The request counter directory packet is an empty data packet with packetId == 3.
-    SendPacket(0, 3, nullptr, 0);
+    m_BasePipeServer.get()->SendPacket(0, 3, nullptr, 0);
 }
 
 void GatordMockService::SendActivateTimelinePacket()
@@ -144,7 +52,7 @@
         std::cout << "Sending activate timeline packet." << std::endl;
     }
     // The activate timeline packet is an empty data packet with packetId == 6.
-    SendPacket(0, 6, nullptr, 0);
+    m_BasePipeServer.get()->SendPacket(0, 6, nullptr, 0);
 }
 
 void GatordMockService::SendDeactivateTimelinePacket()
@@ -154,7 +62,7 @@
         std::cout << "Sending deactivate timeline packet." << std::endl;
     }
     // The deactivate timeline packet is an empty data packet with packetId == 7.
-    SendPacket(0, 7, nullptr, 0);
+    m_BasePipeServer.get()->SendPacket(0, 7, nullptr, 0);
 }
 
 bool GatordMockService::LaunchReceivingThread()
@@ -164,13 +72,13 @@
         std::cout << "Launching receiving thread." << std::endl;
     }
     // At this point we want to make the socket non blocking.
-    if (!Sockets::SetNonBlocking(m_ClientConnection))
+    if (!m_BasePipeServer.get()->SetNonBlocking())
     {
-        Sockets::Close(m_ClientConnection);
+        m_BasePipeServer.get()->Close();
         std::cerr << "Failed to set socket as non blocking: " << strerror(errno) << std::endl;
         return false;
     }
-    m_ListeningThread = std::thread(&GatordMockService::ReceiveLoop, this, std::ref(*this));
+    m_ListeningThread = std::thread(&GatordMockService::ReceiveLoop, this);
     return true;
 }
 
@@ -194,6 +102,11 @@
     }
 }
 
+bool GatordMockService::WaitForStreamMetaData()
+{
+    return m_BasePipeServer->WaitForStreamMetaData();
+}
+
 void GatordMockService::SendPeriodicCounterSelectionList(uint32_t period, std::vector<uint16_t> counters)
 {
     // The packet body consists of a UINT32 representing the period following by zero or more
@@ -204,7 +117,6 @@
     {
         std::cout << "SendPeriodicCounterSelectionList: Period=" << std::dec << period << "uSec" << std::endl;
         std::cout << "List length=" << counters.size() << std::endl;
-        ;
     }
     // Start by calculating the length of the packet body in bytes. This will be at least 4.
     uint32_t dataLength = static_cast<uint32_t>(4 + (counters.size() * 2));
@@ -222,7 +134,7 @@
     }
 
     // Send the packet.
-    SendPacket(0, 4, data, dataLength);
+    m_BasePipeServer.get()->SendPacket(0, 4, data, dataLength);
     // There will be an echo response packet sitting in the receive thread. PeriodicCounterSelectionResponseHandler
     // should deal with it.
 }
@@ -245,14 +157,29 @@
     }
 }
 
-void GatordMockService::ReceiveLoop(GatordMockService& mockService)
+void GatordMockService::ReceiveLoop()
 {
     m_CloseReceivingThread.store(false);
     while (!m_CloseReceivingThread.load())
     {
         try
         {
-            armnn::profiling::Packet packet = mockService.WaitForPacket(500);
+            profiling::Packet packet = m_BasePipeServer.get()->WaitForPacket(500);
+
+            profiling::PacketVersionResolver packetVersionResolver;
+
+            profiling::Version version =
+                packetVersionResolver.ResolvePacketVersion(packet.GetPacketFamily(), packet.GetPacketId());
+
+            profiling::CommandHandlerFunctor* commandHandlerFunctor = m_HandlerRegistry.GetFunctor(
+                                                                        packet.GetPacketFamily(),
+                                                                        packet.GetPacketId(),
+                                                                        version.GetEncodedValue());
+
+
+
+            ARMNN_ASSERT(commandHandlerFunctor);
+            commandHandlerFunctor->operator()(packet);
         }
         catch (const armnn::TimeoutException&)
         {
@@ -272,230 +199,6 @@
     }
 }
 
-armnn::profiling::Packet GatordMockService::WaitForPacket(uint32_t timeoutMs)
-{
-    // Is there currently more than a headers worth of data waiting to be read?
-    int bytes_available;
-    Sockets::Ioctl(m_ClientConnection, FIONREAD, &bytes_available);
-    if (bytes_available > 8)
-    {
-        // Yes there is. Read it:
-        return ReceivePacket();
-    }
-    else
-    {
-        // No there's not. Poll for more data.
-        struct pollfd pollingFd[1]{};
-        pollingFd[0].fd = m_ClientConnection;
-        int pollResult  = Sockets::Poll(pollingFd, 1, static_cast<int>(timeoutMs));
-
-        switch (pollResult)
-        {
-            // Error
-            case -1:
-                throw armnn::RuntimeException(std::string("File descriptor reported an error during polling: ") +
-                                              strerror(errno));
-
-            // Timeout
-            case 0:
-                throw armnn::TimeoutException("Timeout while waiting to receive packet.");
-
-            // Normal poll return. It could still contain an error signal
-            default:
-                // Check if the socket reported an error
-                if (pollingFd[0].revents & (POLLNVAL | POLLERR | POLLHUP))
-                {
-                    if (pollingFd[0].revents == POLLNVAL)
-                    {
-                        throw armnn::RuntimeException(std::string("Error while polling receiving socket: POLLNVAL"));
-                    }
-                    if (pollingFd[0].revents == POLLERR)
-                    {
-                        throw armnn::RuntimeException(std::string("Error while polling receiving socket: POLLERR: ") +
-                                                      strerror(errno));
-                    }
-                    if (pollingFd[0].revents == POLLHUP)
-                    {
-                        throw armnn::RuntimeException(std::string("Connection closed by remote client: POLLHUP"));
-                    }
-                }
-
-                // Check if there is data to read
-                if (!(pollingFd[0].revents & (POLLIN)))
-                {
-                    // This is a corner case. The socket as been woken up but not with any data.
-                    // We'll throw a timeout exception to loop around again.
-                    throw armnn::TimeoutException("File descriptor was polled but no data was available to receive.");
-                }
-                return ReceivePacket();
-        }
-    }
-}
-
-armnn::profiling::Packet GatordMockService::ReceivePacket()
-{
-    uint32_t header[2];
-    if (!ReadHeader(header))
-    {
-        return armnn::profiling::Packet();
-    }
-    // Read data_length bytes from the socket.
-    std::unique_ptr<unsigned char[]> uniquePacketData = std::make_unique<unsigned char[]>(header[1]);
-    unsigned char* packetData                         = reinterpret_cast<unsigned char*>(uniquePacketData.get());
-
-    if (!ReadFromSocket(packetData, header[1]))
-    {
-        return armnn::profiling::Packet();
-    }
-
-    EchoPacket(PacketDirection::ReceivedData, packetData, header[1]);
-
-    // Construct received packet
-    armnn::profiling::PacketVersionResolver packetVersionResolver;
-    armnn::profiling::Packet packetRx = armnn::profiling::Packet(header[0], header[1], uniquePacketData);
-    if (m_EchoPackets)
-    {
-        std::cout << "Processing packet ID= " << packetRx.GetPacketId() << " Length=" << packetRx.GetLength()
-                  << std::endl;
-    }
-
-    profiling::Version version =
-        packetVersionResolver.ResolvePacketVersion(packetRx.GetPacketFamily(), packetRx.GetPacketId());
-
-    profiling::CommandHandlerFunctor* commandHandlerFunctor =
-        m_HandlerRegistry.GetFunctor(packetRx.GetPacketFamily(), packetRx.GetPacketId(), version.GetEncodedValue());
-    ARMNN_ASSERT(commandHandlerFunctor);
-    commandHandlerFunctor->operator()(packetRx);
-    return packetRx;
-}
-
-bool GatordMockService::SendPacket(uint32_t packetFamily, uint32_t packetId, const uint8_t* data, uint32_t dataLength)
-{
-    // Construct a packet from the id and data given and send it to the client.
-    // Encode the header.
-    uint32_t header[2];
-    header[0] = packetFamily << 26 | packetId << 16;
-    header[1] = dataLength;
-    // Add the header to the packet.
-    std::vector<uint8_t> packet(8 + dataLength);
-    InsertU32(header[0], packet.data(), m_Endianness);
-    InsertU32(header[1], packet.data() + 4, m_Endianness);
-    // And the rest of the data if there is any.
-    if (dataLength > 0)
-    {
-        memcpy((packet.data() + 8), data, dataLength);
-    }
-    EchoPacket(PacketDirection::Sending, packet.data(), packet.size());
-    if (-1 == Sockets::Write(m_ClientConnection, packet.data(), packet.size()))
-    {
-        std::cerr << ": Failure when writing to client socket: " << strerror(errno) << std::endl;
-        return false;
-    }
-    return true;
-}
-
-bool GatordMockService::ReadHeader(uint32_t headerAsWords[2])
-{
-    // The header will always be 2x32bit words.
-    uint8_t header[8];
-    if (!ReadFromSocket(header, 8))
-    {
-        return false;
-    }
-    EchoPacket(PacketDirection::ReceivedHeader, header, 8);
-    headerAsWords[0] = ToUint32(&header[0], m_Endianness);
-    headerAsWords[1] = ToUint32(&header[4], m_Endianness);
-    return true;
-}
-
-bool GatordMockService::ReadFromSocket(uint8_t* packetData, uint32_t expectedLength)
-{
-    // This is a blocking read until either expectedLength has been received or an error is detected.
-    long totalBytesRead = 0;
-    while (boost::numeric_cast<uint32_t>(totalBytesRead) < expectedLength)
-    {
-        long bytesRead = Sockets::Read(m_ClientConnection, packetData, expectedLength);
-        if (bytesRead < 0)
-        {
-            std::cerr << ": Failure when reading from client socket: " << strerror(errno) << std::endl;
-            return false;
-        }
-        if (bytesRead == 0)
-        {
-            std::cerr << ": EOF while reading from client socket." << std::endl;
-            return false;
-        }
-        totalBytesRead += bytesRead;
-    }
-    return true;
-};
-
-void GatordMockService::EchoPacket(PacketDirection direction, uint8_t* packet, size_t lengthInBytes)
-{
-    // If enabled print the contents of the data packet to the console.
-    if (m_EchoPackets)
-    {
-        if (direction == PacketDirection::Sending)
-        {
-            std::cout << "TX " << std::dec << lengthInBytes << " bytes : ";
-        }
-        else if (direction == PacketDirection::ReceivedHeader)
-        {
-            std::cout << "RX Header " << std::dec << lengthInBytes << " bytes : ";
-        }
-        else
-        {
-            std::cout << "RX Data " << std::dec << lengthInBytes << " bytes : ";
-        }
-        for (unsigned int i = 0; i < lengthInBytes; i++)
-        {
-            if ((i % 10) == 0)
-            {
-                std::cout << std::endl;
-            }
-            std::cout << "0x" << std::setfill('0') << std::setw(2) << std::hex << static_cast<unsigned int>(packet[i])
-                      << " ";
-        }
-        std::cout << std::endl;
-    }
-}
-
-uint32_t GatordMockService::ToUint32(uint8_t* data, TargetEndianness endianness)
-{
-    // Extract the first 4 bytes starting at data and push them into a 32bit integer based on the
-    // specified endianness.
-    if (endianness == TargetEndianness::BeWire)
-    {
-        return static_cast<uint32_t>(data[0]) << 24 | static_cast<uint32_t>(data[1]) << 16 |
-               static_cast<uint32_t>(data[2]) << 8 | static_cast<uint32_t>(data[3]);
-    }
-    else
-    {
-        return static_cast<uint32_t>(data[3]) << 24 | static_cast<uint32_t>(data[2]) << 16 |
-               static_cast<uint32_t>(data[1]) << 8 | static_cast<uint32_t>(data[0]);
-    }
-}
-
-void GatordMockService::InsertU32(uint32_t value, uint8_t* data, TargetEndianness endianness)
-{
-    // Take the bytes of a 32bit integer and copy them into char array starting at data considering
-    // the endianness value.
-    if (endianness == TargetEndianness::BeWire)
-    {
-        *data       = static_cast<uint8_t>((value >> 24) & 0xFF);
-        *(data + 1) = static_cast<uint8_t>((value >> 16) & 0xFF);
-        *(data + 2) = static_cast<uint8_t>((value >> 8) & 0xFF);
-        *(data + 3) = static_cast<uint8_t>(value & 0xFF);
-    }
-    else
-    {
-        *(data + 3) = static_cast<uint8_t>((value >> 24) & 0xFF);
-        *(data + 2) = static_cast<uint8_t>((value >> 16) & 0xFF);
-        *(data + 1) = static_cast<uint8_t>((value >> 8) & 0xFF);
-        *data       = static_cast<uint8_t>(value & 0xFF);
-    }
-}
-
 }    // namespace gatordmock
 
 }    // namespace armnn