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additional filesystem abstractions

This commit is contained in:
Robin Müller 2022-09-05 17:42:56 +02:00
parent 5a3f05fa79
commit 2e4cdb7366
No known key found for this signature in database
GPG Key ID: 11D4952C8CCEF814
9 changed files with 102 additions and 46 deletions
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62
src/fsfw/cfdp/handler/DestHandler.cpp
View File

@ -23,12 +23,11 @@ cfdp::DestHandler::DestHandler(DestHandlerParams params, FsfwParams fsfwParams)
tp.pduConf.direction = cfdp::Direction::TOWARDS_SENDER;
}
const cfdp::DestFsmResult& cfdp::DestHandler::performStateMachine() {
const cfdp::DestHandler::FsmResult& cfdp::DestHandler::performStateMachine() {
ReturnValue_t result;
uint8_t errorIdx = 0;
fsmRes.callStatus = CallStatus::CALL_AFTER_DELAY;
fsmRes.result = OK;
if (step == TransactionStep::IDLE) {
fsmRes.resetOfIteration();
if (fsmRes.step == TransactionStep::IDLE) {
for (auto infoIter = dp.packetListRef.begin(); infoIter != dp.packetListRef.end();) {
if (infoIter->pduType == PduType::FILE_DIRECTIVE and
infoIter->directiveType == FileDirectives::METADATA) {
@ -42,7 +41,7 @@ const cfdp::DestFsmResult& cfdp::DestHandler::performStateMachine() {
}
infoIter++;
}
if (step == TransactionStep::IDLE) {
if (fsmRes.step == TransactionStep::IDLE) {
// To decrease the already high complexity of the software, all packets arriving before
// a metadata PDU are deleted.
for (auto infoIter = dp.packetListRef.begin(); infoIter != dp.packetListRef.end();) {
@ -52,13 +51,13 @@ const cfdp::DestFsmResult& cfdp::DestHandler::performStateMachine() {
dp.packetListRef.clear();
}
if (step != TransactionStep::IDLE) {
if (fsmRes.step != TransactionStep::IDLE) {
fsmRes.callStatus = CallStatus::CALL_AGAIN;
}
return updateFsmRes(errorIdx);
}
if (cfdpState == CfdpStates::BUSY_CLASS_1_NACKED) {
if (step == TransactionStep::RECEIVING_FILE_DATA_PDUS) {
if (fsmRes.state == CfdpStates::BUSY_CLASS_1_NACKED) {
if (fsmRes.step == TransactionStep::RECEIVING_FILE_DATA_PDUS) {
for (auto infoIter = dp.packetListRef.begin(); infoIter != dp.packetListRef.end();) {
if (infoIter->pduType == PduType::FILE_DATA) {
result = handleFileDataPdu(*infoIter);
@ -83,14 +82,14 @@ const cfdp::DestFsmResult& cfdp::DestHandler::performStateMachine() {
infoIter++;
}
}
if (step == TransactionStep::TRANSFER_COMPLETION) {
if (fsmRes.step == TransactionStep::TRANSFER_COMPLETION) {
result = handleTransferCompletion();
if (result != OK and errorIdx < 3) {
fsmRes.errorCodes[errorIdx] = result;
errorIdx++;
}
}
if (step == TransactionStep::SENDING_FINISHED_PDU) {
if (fsmRes.step == TransactionStep::SENDING_FINISHED_PDU) {
result = sendFinishedPdu();
if (result != OK and errorIdx < 3) {
fsmRes.errorCodes[errorIdx] = result;
@ -100,7 +99,7 @@ const cfdp::DestFsmResult& cfdp::DestHandler::performStateMachine() {
}
return updateFsmRes(errorIdx);
}
if (cfdpState == CfdpStates::BUSY_CLASS_2_ACKED) {
if (fsmRes.state == CfdpStates::BUSY_CLASS_2_ACKED) {
// TODO: Will be implemented at a later stage
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::warning << "CFDP state machine for acknowledged mode not implemented yet" << std::endl;
@ -225,11 +224,11 @@ ReturnValue_t cfdp::DestHandler::handleEofPdu(const cfdp::PacketInfo& info) {
}
tp.fileSize.setFileSize(fileSizeFromEof, std::nullopt);
}
if (step == TransactionStep::RECEIVING_FILE_DATA_PDUS) {
if (cfdpState == CfdpStates::BUSY_CLASS_1_NACKED) {
step = TransactionStep::TRANSFER_COMPLETION;
} else if (cfdpState == CfdpStates::BUSY_CLASS_2_ACKED) {
step = TransactionStep::SENDING_ACK_PDU;
if (fsmRes.step == TransactionStep::RECEIVING_FILE_DATA_PDUS) {
if (fsmRes.state == CfdpStates::BUSY_CLASS_1_NACKED) {
fsmRes.step = TransactionStep::TRANSFER_COMPLETION;
} else if (fsmRes.state == CfdpStates::BUSY_CLASS_2_ACKED) {
fsmRes.step = TransactionStep::SENDING_ACK_PDU;
}
}
return returnvalue::OK;
@ -272,15 +271,15 @@ ReturnValue_t cfdp::DestHandler::handleMetadataParseError(ReturnValue_t result,
}
ReturnValue_t cfdp::DestHandler::startTransaction(MetadataPduReader& reader, MetadataInfo& info) {
if (cfdpState != CfdpStates::IDLE) {
if (fsmRes.state != CfdpStates::IDLE) {
// According to standard, discard metadata PDU if we are busy
return returnvalue::OK;
}
step = TransactionStep::TRANSACTION_START;
fsmRes.step = TransactionStep::TRANSACTION_START;
if (reader.getTransmissionMode() == TransmissionModes::UNACKNOWLEDGED) {
cfdpState = CfdpStates::BUSY_CLASS_1_NACKED;
fsmRes.state = CfdpStates::BUSY_CLASS_1_NACKED;
} else if (reader.getTransmissionMode() == TransmissionModes::ACKNOWLEDGED) {
cfdpState = CfdpStates::BUSY_CLASS_2_ACKED;
fsmRes.state = CfdpStates::BUSY_CLASS_2_ACKED;
}
tp.checksumType = info.getChecksumType();
tp.closureRequested = info.isClosureRequested();
@ -313,7 +312,7 @@ ReturnValue_t cfdp::DestHandler::startTransaction(MetadataPduReader& reader, Met
#endif
return FAILED;
}
step = TransactionStep::RECEIVING_FILE_DATA_PDUS;
fsmRes.step = TransactionStep::RECEIVING_FILE_DATA_PDUS;
MetadataRecvdParams params(tp.transactionId, tp.pduConf.sourceId);
params.fileSize = tp.fileSize.getSize();
params.destFileName = tp.destName.data();
@ -324,7 +323,7 @@ ReturnValue_t cfdp::DestHandler::startTransaction(MetadataPduReader& reader, Met
return OK;
}
cfdp::CfdpStates cfdp::DestHandler::getCfdpState() const { return cfdpState; }
cfdp::CfdpStates cfdp::DestHandler::getCfdpState() const { return fsmRes.state; }
ReturnValue_t cfdp::DestHandler::handleTransferCompletion() {
ReturnValue_t result;
@ -339,14 +338,14 @@ ReturnValue_t cfdp::DestHandler::handleTransferCompletion() {
result = noticeOfCompletion();
if (result != OK) {
}
if (cfdpState == CfdpStates::BUSY_CLASS_1_NACKED) {
if (fsmRes.state == CfdpStates::BUSY_CLASS_1_NACKED) {
if (tp.closureRequested) {
step = TransactionStep::SENDING_FINISHED_PDU;
fsmRes.step = TransactionStep::SENDING_FINISHED_PDU;
} else {
finish();
}
} else if (cfdpState == CfdpStates::BUSY_CLASS_2_ACKED) {
step = TransactionStep::SENDING_FINISHED_PDU;
} else if (fsmRes.state == CfdpStates::BUSY_CLASS_2_ACKED) {
fsmRes.step = TransactionStep::SENDING_FINISHED_PDU;
}
return OK;
}
@ -354,8 +353,8 @@ ReturnValue_t cfdp::DestHandler::handleTransferCompletion() {
void cfdp::DestHandler::finish() {
tp.reset();
dp.packetListRef.clear();
cfdpState = CfdpStates::IDLE;
step = TransactionStep::IDLE;
fsmRes.state = CfdpStates::IDLE;
fsmRes.step = TransactionStep::IDLE;
}
ReturnValue_t cfdp::DestHandler::checksumVerification() {
@ -430,12 +429,15 @@ ReturnValue_t cfdp::DestHandler::sendFinishedPdu() {
// TODO: Error handling and event, this is a non CFDP specific error (most likely store is full)
return result;
}
fsmRes.packetsSent++;
return OK;
}
cfdp::DestHandler::TransactionStep cfdp::DestHandler::getTransactionStep() const { return step; }
cfdp::DestHandler::TransactionStep cfdp::DestHandler::getTransactionStep() const {
return fsmRes.step;
}
const cfdp::DestFsmResult& cfdp::DestHandler::updateFsmRes(uint8_t errors) {
const cfdp::DestHandler::FsmResult& cfdp::DestHandler::updateFsmRes(uint8_t errors) {
fsmRes.errors = errors;
fsmRes.result = OK;
if (fsmRes.errors > 0) {

34
src/fsfw/cfdp/handler/DestHandler.h
View File

@ -72,14 +72,6 @@ struct FsfwParams {
enum class CallStatus { DONE, CALL_AFTER_DELAY, CALL_AGAIN };
struct DestFsmResult {
ReturnValue_t result = returnvalue::OK;
CallStatus callStatus = CallStatus::CALL_AFTER_DELAY;
uint32_t packetsSent = 0;
uint8_t errors = 0;
std::array<ReturnValue_t, 3> errorCodes = {};
};
class DestHandler {
public:
enum class TransactionStep {
@ -90,6 +82,24 @@ class DestHandler {
TRANSFER_COMPLETION = 4,
SENDING_FINISHED_PDU = 5
};
struct FsmResult {
public:
ReturnValue_t result = returnvalue::OK;
CallStatus callStatus = CallStatus::CALL_AFTER_DELAY;
TransactionStep step = TransactionStep::IDLE;
CfdpStates state = CfdpStates::IDLE;
uint32_t packetsSent = 0;
uint8_t errors = 0;
std::array<ReturnValue_t, 3> errorCodes = {};
void resetOfIteration() {
result = returnvalue::OK;
callStatus = CallStatus::CALL_AFTER_DELAY;
packetsSent = 0;
errors = 0;
errorCodes.fill(returnvalue::OK);
}
};
/**
* Will be returned if it is advisable to call the state machine operation call again
*/
@ -103,7 +113,7 @@ class DestHandler {
* - @c returnvalue::OK State machine OK for this execution cycle
* - @c CALL_FSM_AGAIN State machine should be called again.
*/
const DestFsmResult& performStateMachine();
const FsmResult& performStateMachine();
ReturnValue_t passPacket(PacketInfo packet);
@ -149,14 +159,12 @@ class DestHandler {
RemoteEntityCfg* remoteCfg = nullptr;
};
TransactionStep step = TransactionStep::IDLE;
CfdpStates cfdpState = CfdpStates::IDLE;
std::vector<cfdp::Tlv> tlvVec;
std::vector<cfdp::Tlv> userTlvVec;
DestHandlerParams dp;
FsfwParams fp;
TransactionParams tp;
DestFsmResult fsmRes;
FsmResult fsmRes;
ReturnValue_t startTransaction(MetadataPduReader& reader, MetadataInfo& info);
ReturnValue_t handleMetadataPdu(const PacketInfo& info);
@ -168,7 +176,7 @@ class DestHandler {
ReturnValue_t sendFinishedPdu();
ReturnValue_t noticeOfCompletion();
ReturnValue_t checksumVerification();
const DestFsmResult& updateFsmRes(uint8_t errors);
const FsmResult& updateFsmRes(uint8_t errors);
void finish();
};

2
src/fsfw/filesystem/FileSystemArgsIF.h
View File

@ -7,7 +7,7 @@
*/
class FileSystemArgsIF {
public:
virtual ~FileSystemArgsIF(){};
virtual ~FileSystemArgsIF() = default;
};
#endif /* FSFW_SRC_FSFW_MEMORY_FILESYSTEMARGS_H_ */

9
src/fsfw/filesystem/HasFileSystemIF.h
View File

@ -73,6 +73,15 @@ class HasFileSystemIF {
return MessageQueueIF::NO_QUEUE;
}
virtual bool fileExists(FilesystemParams params) = 0;
/**
* Truncate a file, deleting its contents and setting its size to 0 accordingly.
* @param params
* @return
*/
virtual ReturnValue_t truncateFile(FilesystemParams params) = 0;
/**
* @brief Generic function to append to file.
* @param fileOpInfo General information: File name, size to write, offset, additional arguments

14
src/fsfw_hal/host/HostFilesystem.cpp
View File

@ -144,3 +144,17 @@ ReturnValue_t HostFilesystem::rename(const char *oldPath_, const char *newPath_,
}
return returnvalue::OK;
}
bool HostFilesystem::fileExists(FilesystemParams params) {
path path(params.path);
return filesystem::exists(path);
}
ReturnValue_t HostFilesystem::truncateFile(FilesystemParams params) {
path path(params.path);
if (not filesystem::exists(path)) {
return FILE_DOES_NOT_EXIST;
}
ofstream of(path);
return returnvalue::OK;
}

3
src/fsfw_hal/host/HostFilesystem.h
View File

@ -8,6 +8,9 @@
class HostFilesystem : public HasFileSystemIF {
public:
HostFilesystem();
bool fileExists(FilesystemParams params) override;
ReturnValue_t truncateFile(FilesystemParams params) override;
ReturnValue_t writeToFile(FileOpParams params, const uint8_t *data) override;
ReturnValue_t readFromFile(FileOpParams fileOpInfo, uint8_t **buffer, size_t &readSize,
size_t maxSize) override;

4
unittests/cfdp/handler/testDestHandler.cpp
View File

@ -56,7 +56,7 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
}
SECTION("Empty File Transfer") {
const DestFsmResult& res = destHandler.performStateMachine();
const DestHandler::FsmResult& res = destHandler.performStateMachine();
CHECK(res.result == OK);
FileSize size(0);
std::string srcNameString = "hello.txt";
@ -76,6 +76,8 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
packetInfoList.push_back(packetInfo);
destHandler.performStateMachine();
CHECK(res.result == OK);
CHECK(res.callStatus == CallStatus::CALL_AGAIN);
destHandler.performStateMachine();
}
SECTION("Small File Transfer") {}

14
unittests/mocks/FilesystemMock.cpp
View File

@ -124,3 +124,17 @@ void FilesystemMock::reset() {
std::queue<RenameInfo> empty;
std::swap(renameQueue, empty);
}
bool FilesystemMock::fileExists(FilesystemParams params) {
std::string filename(params.path);
auto iter = fileMap.find(filename);
if (iter == fileMap.end()) {
return false;
}
return true;
}
ReturnValue_t FilesystemMock::truncateFile(FilesystemParams params) {
truncateCalledOnFile = params.path;
return returnvalue::OK;
}

6
unittests/mocks/FilesystemMock.h
View File

@ -53,8 +53,12 @@ class FilesystemMock : public HasFileSystemIF {
std::string newName;
};
std::queue<RenameInfo> renameQueue;
std::string truncateCalledOnFile;
ReturnValue_t feedFile(const std::string &filename, std::ifstream &file);
bool fileExists(FilesystemParams params) override;
ReturnValue_t truncateFile(FilesystemParams params) override;
ReturnValue_t writeToFile(FileOpParams params, const uint8_t *data) override;
ReturnValue_t readFromFile(FileOpParams params, uint8_t **buffer, size_t &readSize,
size_t maxSize) override;