new tmtc unix udp bridge

osal/linux/TcUnixUdpPollingTask.cpp

@@ -0,0 +1,137 @@
+#include <framework/osal/linux/TcUnixUdpPollingTask.h>
+#include <framework/globalfunctions/arrayprinter.h>
+
+TcUnixUdpPollingTask::TcUnixUdpPollingTask(object_id_t objectId,
+		object_id_t tmtcUnixUdpBridge, size_t frameSize,
+		double timeoutSeconds): SystemObject(objectId),
+		tmtcBridgeId(tmtcUnixUdpBridge) {
+
+	if(frameSize > 0) {
+		this->frameSize = frameSize;
+	}
+	else {
+		this->frameSize = DEFAULT_MAX_FRAME_SIZE;
+	}
+
+	// Set up reception buffer with specified frame size.
+	// For now, it is assumed that only one frame is held in the buffer!
+	receptionBuffer.reserve(this->frameSize);
+	receptionBuffer.resize(this->frameSize);
+
+	if(timeoutSeconds == -1) {
+		receptionTimeout = DEFAULT_TIMEOUT;
+	}
+	else {
+		receptionTimeout = timevalOperations::toTimeval(timeoutSeconds);
+	}
+}
+
+TcUnixUdpPollingTask::~TcUnixUdpPollingTask() {}
+
+ReturnValue_t TcUnixUdpPollingTask::performOperation(uint8_t opCode) {
+	// Poll for new UDP datagrams in permanent loop.
+	while(1) {
+		//! Sender Address is cached here.
+		struct sockaddr_in senderAddress;
+		socklen_t senderSockLen = 0;
+		ssize_t bytesReceived = recvfrom(serverUdpSocket,
+				receptionBuffer.data(), frameSize, receptionFlags,
+				reinterpret_cast<sockaddr*>(&senderAddress), &senderSockLen);
+		if(bytesReceived < 0) {
+			// handle error
+			sif::error << "TcSocketPollingTask::performOperation: Reception"
+					"error." << std::endl;
+			handleReadError();
+
+			continue;
+		}
+//		sif::debug << "TcSocketPollingTask::performOperation: " << bytesReceived
+//				<< " bytes received" << std::endl;
+
+		ReturnValue_t result = handleSuccessfullTcRead(bytesReceived);
+		if(result != HasReturnvaluesIF::RETURN_FAILED) {
+
+		}
+		tmtcBridge->registerCommConnect();
+		tmtcBridge->checkAndSetClientAddress(senderAddress);
+	}
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+
+ReturnValue_t TcUnixUdpPollingTask::handleSuccessfullTcRead(size_t bytesRead) {
+	store_address_t storeId;
+	ReturnValue_t result = tcStore->addData(&storeId,
+			receptionBuffer.data(), bytesRead);
+	// arrayprinter::print(receptionBuffer.data(), bytesRead);
+	if (result != HasReturnvaluesIF::RETURN_OK) {
+		sif::error << "TcSerialPollingTask::transferPusToSoftwareBus: Data "
+				"storage failed" << std::endl;
+		sif::error << "Packet size: " << bytesRead << std::endl;
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+
+	TmTcMessage message(storeId);
+
+	result  = MessageQueueSenderIF::sendMessage(targetTcDestination, &message);
+	if (result != HasReturnvaluesIF::RETURN_OK) {
+		sif::error << "Serial Polling: Sending message to queue failed"
+				<< std::endl;
+		tcStore->deleteData(storeId);
+	}
+	return result;
+}
+
+ReturnValue_t TcUnixUdpPollingTask::initialize() {
+	tcStore = objectManager->get<StorageManagerIF>(objects::TC_STORE);
+	if (tcStore == nullptr) {
+		sif::error << "TcSerialPollingTask::initialize: TC Store uninitialized!"
+				<< std::endl;
+		return ObjectManagerIF::CHILD_INIT_FAILED;
+	}
+
+	tmtcBridge = objectManager->get<TmTcUnixUdpBridge>(tmtcBridgeId);
+	if(tmtcBridge == nullptr) {
+		sif::error << "TcSocketPollingTask::TcSocketPollingTask: Invalid"
+				" TMTC bridge object!" << std::endl;
+		return ObjectManagerIF::CHILD_INIT_FAILED;
+	}
+
+	serverUdpSocket = tmtcBridge->serverSocket;
+
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t TcUnixUdpPollingTask::initializeAfterTaskCreation() {
+	// Initialize the destination after task creation. This ensures
+	// that the destination will be set in the TMTC bridge.
+	targetTcDestination = tmtcBridge->getRequestQueue();
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+void TcUnixUdpPollingTask::setTimeout(double timeoutSeconds) {
+	timeval tval;
+	tval = timevalOperations::toTimeval(timeoutSeconds);
+	int result = setsockopt(serverUdpSocket, SOL_SOCKET, SO_RCVTIMEO,
+			&tval, sizeof(receptionTimeout));
+	if(result == -1) {
+		sif::error << "TcSocketPollingTask::TcSocketPollingTask: Setting "
+				"receive timeout failed with " << strerror(errno) << std::endl;
+	}
+}
+
+void TcUnixUdpPollingTask::handleReadError() {
+	switch(errno) {
+	case(EAGAIN): {
+		// todo: When working in timeout mode, this will occur more often
+		// and is not an error.
+		sif::error << "TcUnixUdpPollingTask::handleReadError: Timeout."
+				<< std::endl;
+		break;
+	}
+	default: {
+		sif::error << "TcUnixUdpPollingTask::handleReadError: "
+				<< strerror(errno) << std::endl;
+	}
+	}
+}