Examples with ScanningException org.eclipse.scanning.api.scan.ScanningException used on opensource projects

Example 26 with ScanningException

use of org.eclipse.scanning.api.scan.ScanningException in project gda-core by openGDA.

the class FrameCollectingScannable method configureAndCollect.

/**
 * This is invoked shortly before the main scan is configured
 */
@PrepareScan
public void configureAndCollect(ScanModel scanModel) throws ScanningException {
    configureCollection(scanModel);
    try {
        configureBeamline();
        frameFilePath = collectFrame();
        nexusNodePath = generateNodePath();
        restoreBeamline();
    } catch (EventException e) {
        throw new ScanningException("Problem taking snapshot", e);
    }
}

Example 27 with ScanningException

use of org.eclipse.scanning.api.scan.ScanningException in project gda-core by openGDA.

the class NexusSlitsWrapper method getPosition.

// implements IScannable<DeviceValueMultiPosition>
@Override
public DeviceValueMultiPosition getPosition() throws ScanningException {
    DeviceValueMultiPosition position = new DeviceValueMultiPosition();
    try {
        position.put(NXslit.NX_X_GAP, (double) x_gap.getPosition());
        position.put(NXslit.NX_Y_GAP, (double) y_gap.getPosition());
        return position;
    } catch (DeviceException e) {
        throw new ScanningException("Could not get position of scannable: " + getName(), e);
    }
}

Example 28 with ScanningException

use of org.eclipse.scanning.api.scan.ScanningException in project gda-core by openGDA.

the class NexusSlitsWrapper method write.

private void write(DeviceValueMultiPosition demand, DeviceValueMultiPosition actual, IPosition loc) throws ScanningException, DatasetException {
    // there are no actual values.
    if (xLzValue == null || yLzValue == null) {
        return;
    }
    if (actual != null) {
        // write actual position
        final Dataset newXPositionData = DatasetFactory.createFromObject(actual.get(NXslit.NX_X_GAP));
        final Dataset newYPositionData = DatasetFactory.createFromObject(actual.get(NXslit.NX_Y_GAP));
        IScanSlice rslice = IScanRankService.getScanRankService().createScanSlice(loc);
        SliceND xSliceND = new SliceND(xLzValue.getShape(), xLzValue.getMaxShape(), rslice.getStart(), rslice.getStop(), rslice.getStep());
        SliceND ySliceND = new SliceND(yLzValue.getShape(), yLzValue.getMaxShape(), rslice.getStart(), rslice.getStop(), rslice.getStep());
        if (isWritingOn()) {
            xLzValue.setSlice(null, newXPositionData, xSliceND);
            yLzValue.setSlice(null, newYPositionData, ySliceND);
        }
    }
    if (xLzSet == null || yLzSet == null) {
        return;
    }
    if (demand != null) {
        int index = loc.getIndex(getName());
        if (index < 0) {
            throw new ScanningException("Incorrect data index for scan for value of '" + getName() + "'. The index is " + index);
        }
        final int[] startPos = new int[] { index };
        final int[] stopPos = new int[] { index + 1 };
        // write demand position
        final Dataset newDemandPositionData = DatasetFactory.createFromObject(demand);
        if (isWritingOn()) {
            xLzSet.setSlice(null, newDemandPositionData, startPos, stopPos, null);
            yLzSet.setSlice(null, newDemandPositionData, startPos, stopPos, null);
        }
    }
}

Example 29 with ScanningException

use of org.eclipse.scanning.api.scan.ScanningException in project gda-core by openGDA.

the class ScannableDeviceConnectorService method getScannable.

@SuppressWarnings("unchecked")
@Override
public <T> IScannable<T> getScannable(String name) throws ScanningException {
    boolean jythonScannable = false;
    if (scannables == null)
        scannables = new HashMap<>();
    // first check whether an existing IScannable with this name in the cache, if so return it
    if (scannables.containsKey(name)) {
        IScannable<T> scannable = (IScannable<T>) scannables.get(name);
        if (scannable == null)
            throw new ScanningException("Cannot find scannable with name " + name);
        return scannable;
    }
    // if not, see if we can find a gda.device.Scannable with this name using the Finder mechanism
    Optional<Scannable> found = Finder.findOptionalOfType(name, Scannable.class);
    Scannable scannable = found.filter(s -> !(s instanceof Detector)).orElse(null);
    if (scannable == null) {
        // if not, see if we can find a gda.device.Scannable with this name in the jython namespace
        Object jythonObject = InterfaceProvider.getJythonNamespace().getFromJythonNamespace(name);
        if (jythonObject instanceof Scannable && !(jythonObject instanceof Detector)) {
            scannable = (Scannable) jythonObject;
            jythonScannable = true;
        }
    }
    // if we still haven't found the scannable, throw a ScanningException
    if (scannable == null) {
        throw new ScanningException("Cannot find scannable with name " + name);
    }
    // create a ScannableNexusWrapper wrapping the gda.device.Scannable
    IScannable<T> iscannable = createScannableWrapper(name, scannable, jythonScannable);
    // cache the IScannable for future use
    scannables.put(name, iscannable);
    return iscannable;
}

Example 30 with ScanningException

use of org.eclipse.scanning.api.scan.ScanningException in project gda-core by openGDA.

the class ScanRequestFactory method prepareMalcolmAcquisitionEngine.

private void prepareMalcolmAcquisitionEngine(ScanRequest scanRequest, IRunnableDeviceService runnableDeviceService) throws ScanningException {
    final Map<String, IDetectorModel> ret = new HashMap<>();
    scanRequest.setDetectors(ret);
    String id = Optional.ofNullable(getAcquisitionEngine()).map(AcquisitionEngineReader::getId).orElseThrow(() -> new ScanningException("The AcquisitionEngine section does not contain the device id"));
    IRunnableDevice<IDetectorModel> detector = runnableDeviceService.getRunnableDevice(id);
    IDetectorModel imodel = Optional.ofNullable(detector.getModel()).orElseThrow(() -> new ScanningException(String.format("Could not get model for detector %s", detector.getName())));
    if (!(imodel instanceof IMalcolmModel))
        throw new ScanningException(String.format("Detector model is not an instance of of type %s", IMalcolmModel.class));
    final IMalcolmModel model = IMalcolmModel.class.cast(imodel);
    setDetectorsExposures(model);
    ret.put(detector.getName(), model);
}