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org.yamcs.cfdp.OngoingCfdpTransfer Maven / Gradle / Ivy
package org.yamcs.cfdp;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
import org.yamcs.YConfiguration;
import org.yamcs.YamcsServer;
import org.yamcs.cfdp.pdu.CfdpPacket;
import org.yamcs.cfdp.pdu.ConditionCode;
import org.yamcs.cfdp.pdu.DirectoryListingRequest;
import org.yamcs.cfdp.pdu.DirectoryListingResponse;
import org.yamcs.cfdp.pdu.MetadataPacket;
import org.yamcs.cfdp.pdu.OriginatingTransactionId;
import org.yamcs.cfdp.pdu.ProxyClosureRequest;
import org.yamcs.cfdp.pdu.ProxyPutRequest;
import org.yamcs.cfdp.pdu.ProxyPutResponse;
import org.yamcs.cfdp.pdu.ProxyTransmissionMode;
import org.yamcs.cfdp.pdu.ReservedMessageToUser;
import org.yamcs.cfdp.pdu.TLV;
import org.yamcs.events.EventProducer;
import org.yamcs.filetransfer.TransferMonitor;
import org.yamcs.logging.Log;
import org.yamcs.protobuf.TransferState;
import org.yamcs.utils.StringConverter;
import org.yamcs.yarch.Stream;
public abstract class OngoingCfdpTransfer implements CfdpFileTransfer {
protected final CfdpTransactionId cfdpTransactionId;
private Stream cfdpOut;
protected TransferState state;
protected final ScheduledThreadPoolExecutor executor;
protected final EventProducer eventProducer;
protected boolean acknowledged = false;
protected final Log log;
protected final long startTime;
protected final long wallclockStartTime;
protected final long creationTime;
protected String transferType = PredefinedTransferTypes.UNKNOWN.toString();
final TransferMonitor monitor;
final long destinationId;
// transaction unique identifier (coming from a database)
final long id;
protected ScheduledFuture inactivityFuture;
final long inactivityTimeout;
long maxAckSendFreqNanos;
long lastAckSentTime;
boolean logAckDrop = true;
// accumulate the errors
List errors = new ArrayList<>();
enum FaultHandlingAction {
// "Handler code" in protocol?
// ‘0000’ — reserved for future expansion
// ‘0001’ — issue Notice of Cancellation
// ‘0010’ — issue Notice of Suspension
// ‘0011’ — Ignore error
// ‘0100’ — Abandon transaction
// ‘0101’–‘1111’ — reserved
SUSPEND, CANCEL, ABANDON;
public static FaultHandlingAction fromString(String str) {
for (FaultHandlingAction a : values()) {
if (a.name().equalsIgnoreCase(str)) {
return a;
}
}
return null;
}
public static List actions() {
return Arrays.stream(FaultHandlingAction.values()).map(a -> a.name().toLowerCase())
.collect(Collectors.toList());
}
}
final Map faultHandlerActions;
public OngoingCfdpTransfer(String yamcsInstance, long id, long creationTime, ScheduledThreadPoolExecutor executor,
YConfiguration config, CfdpTransactionId cfdpTransactionId, long destinationId, Stream cfdpOut,
EventProducer eventProducer, TransferMonitor monitor,
Map faultHandlerActions) {
this.cfdpTransactionId = cfdpTransactionId;
this.cfdpOut = cfdpOut;
this.state = TransferState.RUNNING;
this.executor = executor;
this.eventProducer = eventProducer;
this.startTime = YamcsServer.getTimeService(yamcsInstance).getMissionTime();
this.wallclockStartTime = System.currentTimeMillis();
this.log = new Log(this.getClass(), yamcsInstance);
this.id = id;
this.destinationId = destinationId;
this.creationTime = creationTime;
if (monitor == null) {
throw new NullPointerException("the monitor cannot be null");
}
this.monitor = monitor;
this.inactivityTimeout = config.getLong("inactivityTimeout", 10000);
this.maxAckSendFreqNanos = config.getLong("maxAckSendFreq", 500) * 1_000_000;
this.faultHandlerActions = faultHandlerActions;
}
/**
* Sets the transfer type fom the metadata packet
*
* @param metadata
* Metadata packet
*/
protected static String getTransferType(MetadataPacket metadata) {
if (metadata == null) {
return PredefinedTransferTypes.UNKNOWN.toString();
}
ArrayList transferTypeInfo = new ArrayList<>();
if (metadata.getFileLength() > 0) {
transferTypeInfo.add(PredefinedTransferTypes.FILE_TRANSFER.toString());
} else if (metadata.getHeader().isLargeFile()) {
transferTypeInfo.add(PredefinedTransferTypes.LARGE_FILE_TRANSFER.toString());
}
List options = metadata.getOptions();
if (options == null || options.isEmpty()) {
if (transferTypeInfo.isEmpty()) {
return PredefinedTransferTypes.METADATA_ONLY_TRANSFER.toString();
} else {
return transferTypeInfo.get(0);
}
}
boolean hasOriginatingTransactionId = false;
int unknownOptions = 0;
for (TLV option : options) {
if (option instanceof ReservedMessageToUser) {
if (option instanceof OriginatingTransactionId) {
hasOriginatingTransactionId = true;
} else if (option instanceof ProxyPutRequest) {
ProxyPutRequest proxyPutRequest = (ProxyPutRequest) option;
transferTypeInfo.add(
PredefinedTransferTypes.DOWNLOAD_REQUEST + " (" + proxyPutRequest.getDestinationFileName()
+ " ⟵ " + proxyPutRequest.getSourceFileName() + ")");
} else if (option instanceof ProxyPutResponse) {
ProxyPutResponse proxyPutResponse = (ProxyPutResponse) option;
transferTypeInfo.add(PredefinedTransferTypes.DOWNLOAD_REQUEST_RESPONSE + " ("
+ proxyPutResponse.getConditionCode() + ", "
+ (proxyPutResponse.isDataComplete() ? "Complete" : "Incomplete") + ", "
+ proxyPutResponse.getFileStatus() + ")");
} else if (option instanceof ProxyTransmissionMode || option instanceof ProxyClosureRequest) {
transferTypeInfo.add(option.toString());
} else if (option instanceof DirectoryListingRequest) {
transferTypeInfo.add(PredefinedTransferTypes.DIRECTORY_LISTING_REQUEST + " ("
+ ((DirectoryListingRequest) option).getDirectoryName() + ")");
} else if (option instanceof DirectoryListingResponse) {
transferTypeInfo.add(PredefinedTransferTypes.DIRECTORY_LISTING_RESPONSE + " ("
+ ((DirectoryListingResponse) option).getListingResponseCode() + ")");
} else {
transferTypeInfo.add(((ReservedMessageToUser) option).getMessageType().toString());
}
} else {
unknownOptions += 1;
}
}
if (hasOriginatingTransactionId && transferTypeInfo.isEmpty()) {
transferTypeInfo.add(PredefinedTransferTypes.ORIGINATING_TRANSACTION_ID_ONLY.toString());
}
if (unknownOptions > 0) {
transferTypeInfo.add(unknownOptions + " " + PredefinedTransferTypes.UNKNOWN_METADATA_OPTION
+ (unknownOptions > 1 ? "s" : ""));
}
return String.join(", ", transferTypeInfo);
}
public abstract void processPacket(CfdpPacket packet);
protected void pushError(String err) {
errors.add(err);
}
protected void sendPacket(CfdpPacket packet) {
if (log.isDebugEnabled()) {
log.debug("TXID{} sending PDU: {}", cfdpTransactionId, packet);
log.trace("{}", StringConverter.arrayToHexString(packet.toByteArray(), true));
}
cfdpOut.emitTuple(packet.toTuple(this));
}
public final boolean isOngoing() {
return state == TransferState.RUNNING || state == TransferState.PAUSED;
}
@Override
public final TransferState getTransferState() {
return state;
}
@Override
public boolean cancellable() {
return true;
}
@Override
public boolean pausable() {
return true;
}
protected abstract void onInactivityTimerExpiration();
protected void cancelInactivityTimer() {
if (inactivityFuture != null) {
inactivityFuture.cancel(false);
}
}
protected void rescheduleInactivityTimer() {
cancelInactivityTimer();
inactivityFuture = executor.schedule(this::onInactivityTimerExpiration, inactivityTimeout,
TimeUnit.MILLISECONDS);
}
public OngoingCfdpTransfer pauseTransfer() {
executor.submit(this::suspend);
return this;
}
protected abstract void suspend();
public OngoingCfdpTransfer resumeTransfer() {
executor.submit(this::resume);
return this;
}
protected abstract void resume();
public OngoingCfdpTransfer cancelTransfer() {
executor.submit(() -> {
pushError("Cancel request received");
cancel(ConditionCode.CANCEL_REQUEST_RECEIVED);
});
return this;
}
protected abstract void cancel(ConditionCode code);
public OngoingCfdpTransfer abandonTransfer(String reason) {
executor.submit(() -> failTransfer(reason));
return this;
}
@Override
public CfdpTransactionId getTransactionId() {
return cfdpTransactionId;
}
@Override
public boolean isReliable() {
return acknowledged;
}
@Override
public long getStartTime() {
return startTime;
}
protected void failTransfer(String failureReason) {
pushError(failureReason);
changeState(TransferState.FAILED);
}
protected void changeState(TransferState newState) {
this.state = newState;
if (state != TransferState.RUNNING) {
cancelInactivityTimer();
}
monitor.stateChanged(this);
}
@Override
public String getFailuredReason() {
return errors.stream().collect(Collectors.joining("; "));
}
@Override
public long getId() {
return id;
}
protected FaultHandlingAction getFaultHandlingAction(ConditionCode code) {
FaultHandlingAction action = faultHandlerActions.get(code);
if (action == null) {
return FaultHandlingAction.CANCEL;
} else {
return action;
}
}
/**
* Return the entity id of the Sender
*/
@Override
public long getInitiatorEntityId() {
return cfdpTransactionId.getInitiatorEntity();
}
/**
* Return the entity id of the Receiver
*/
@Override
public long getDestinationId() {
return destinationId;
}
@Override
public String getTransferType() {
return transferType;
}
protected void sendInfoEvent(String type, String msg) {
eventProducer.sendInfo(type, "TXID[" + cfdpTransactionId + "] " + msg);
}
protected void sendWarnEvent(String type, String msg) {
eventProducer.sendWarning(type, "TXID[" + cfdpTransactionId + "] " + msg);
}
protected String toEventMsg(MetadataPacket packet) {
return packet.toJson();
}
@Override
public long getCreationTime() {
return creationTime;
}
}
