CEchoSCUServiceImpl.java

//
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 *
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 * for the specific language governing rights and limitations under the
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 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
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 * The Initial Developer of the Original Code is
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package org.dcm4chee.archive.echo.scu.impl;

import java.io.IOException;
import java.security.GeneralSecurityException;

import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;

import org.dcm4che3.conf.api.IApplicationEntityCache;
import org.dcm4che3.conf.core.api.ConfigurationException;
import org.dcm4che3.data.Attributes;
import org.dcm4che3.data.Tag;
import org.dcm4che3.data.UID;
import org.dcm4che3.net.ApplicationEntity;
import org.dcm4che3.net.Association;
import org.dcm4che3.net.CompatibleConnection;
import org.dcm4che3.net.Connection;
import org.dcm4che3.net.Device;
import org.dcm4che3.net.DimseRSP;
import org.dcm4che3.net.IncompatibleConnectionException;
import org.dcm4che3.net.Status;
import org.dcm4che3.net.pdu.AAssociateRQ;
import org.dcm4che3.net.service.DicomServiceException;
import org.dcm4chee.archive.conf.ArchiveDeviceExtension;
import org.dcm4chee.archive.echo.scu.CEchoSCUService;

/**
 * Implementation of {@link CEchoSCUService}.
 * 
 * @author Hermann Czedik-Eysenberg <hermann-agfa@czedik.net>
 */
@ApplicationScoped
public class CEchoSCUServiceImpl implements CEchoSCUService {

    @Inject
    private Device device;

    @Inject
    private IApplicationEntityCache aeCache;

    @Override
    public long cecho(String remoteAETitle) throws DicomServiceException {
        return cecho(getDefaultLocalAETitle(), remoteAETitle);
    }

    @Override
    public long cecho(String remoteAETitle, Connection remoteConnection) throws DicomServiceException {
        return cecho(getDefaultLocalAETitle(), remoteAETitle, remoteConnection);
    }

    private String getDefaultLocalAETitle() {
        ArchiveDeviceExtension archiveDevice = device.getDeviceExtension(ArchiveDeviceExtension.class);
        return archiveDevice.getDefaultAETitle();
    }

    @Override
    public long cecho(String localAETitle, String remoteAETitle) throws DicomServiceException {
        ApplicationEntity localAE = lookupLocalAE(localAETitle);
        ApplicationEntity remoteAE = lookupRemoteAE(remoteAETitle);

        return cecho(localAE, remoteAE);
    }

    private long cecho(ApplicationEntity localAE, ApplicationEntity remoteAE) throws DicomServiceException {
        CompatibleConnection compatibleConnection;
        try {
            compatibleConnection = localAE.findCompatibelConnection(remoteAE);
        } catch (IncompatibleConnectionException e) {
            throw new DicomServiceException(Status.ProcessingFailure, e);
        }

        return cecho(localAE, remoteAE.getAETitle(), compatibleConnection);
    }

    @Override
    public long cecho(String localAETitle, String remoteAETitle, Connection remoteConnection) throws DicomServiceException {
        ApplicationEntity localAE = lookupLocalAE(localAETitle);

        return cecho(localAE, remoteAETitle, remoteConnection);
    }

    private long cecho(ApplicationEntity localAE, String remoteAETitle, Connection remoteConnection) throws DicomServiceException {
        Connection localConnection;
        try {
            localConnection = localAE.findCompatibelConnection(remoteConnection);
        } catch (IncompatibleConnectionException e) {
            throw new DicomServiceException(Status.ProcessingFailure, e);
        }
        CompatibleConnection compatibleConnection = new CompatibleConnection(localConnection, remoteConnection);

        return cecho(localAE, remoteAETitle, compatibleConnection);
    }

    private ApplicationEntity lookupLocalAE(String localAETitle) throws DicomServiceException {
        ApplicationEntity localAE = device.getApplicationEntity(localAETitle);
        if (localAE == null)
            throw new DicomServiceException(Status.ProcessingFailure, "Local AE " + localAETitle + " unknown.");
        return localAE;
    }

    private ApplicationEntity lookupRemoteAE(String remoteAETitle) throws DicomServiceException {
        try {
            return aeCache.findApplicationEntity(remoteAETitle);
        } catch (ConfigurationException e) {
            throw new DicomServiceException(Status.ProcessingFailure, e);
        }
    }

    private long cecho(ApplicationEntity localAE, String remoteAETitle, CompatibleConnection compatibleConnection) throws DicomServiceException {
        AAssociateRQ aarq = new AAssociateRQ();
        aarq.setCallingAET(localAE.getAETitle());
        aarq.setCalledAET(remoteAETitle);

        aarq.addPresentationContextFor(UID.VerificationSOPClass, UID.ImplicitVRLittleEndian);
        aarq.addPresentationContextFor(UID.VerificationSOPClass, UID.ExplicitVRLittleEndian);
        aarq.addPresentationContextFor(UID.VerificationSOPClass, UID.ExplicitVRBigEndianRetired);

        long time = System.nanoTime();

        int status;
        try {
            Association association = localAE.connect(compatibleConnection.getLocalConnection(), compatibleConnection.getRemoteConnection(), aarq);
            try {
                DimseRSP response = association.cecho();
                response.next();
                Attributes cmd = response.getCommand();
                status = cmd.getInt(Tag.Status, -1);
            } finally {
                association.release();
            }
        } catch (IOException | InterruptedException | IncompatibleConnectionException | GeneralSecurityException e) {
            throw new DicomServiceException(Status.ProcessingFailure, e);
        }

        time = System.nanoTime() - time;

        if (status == Status.Success)
            return time;

        throw new DicomServiceException(status);
    }

}