edu.emory.cci.aiw.cvrg.eureka.etl.resource.OutputResource.java Source code

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Here is the source code for edu.emory.cci.aiw.cvrg.eureka.etl.resource.OutputResource.java

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package edu.emory.cci.aiw.cvrg.eureka.etl.resource;

/*
 * #%L
 * Eureka Protempa ETL
 * %%
 * Copyright (C) 2012 - 2015 Emory University
 * %%
 * This program is dual licensed under the Apache 2 and GPLv3 licenses.
 * 
 * Apache License, Version 2.0:
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * GNU General Public License version 3:
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */
import com.google.inject.Inject;
import edu.emory.cci.aiw.cvrg.eureka.common.entity.DestinationEntity;
import edu.emory.cci.aiw.cvrg.eureka.etl.config.EtlProperties;
import edu.emory.cci.aiw.cvrg.eureka.etl.dao.DestinationDao;
import edu.emory.cci.aiw.cvrg.eureka.etl.dest.FileSupport;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.annotation.security.RolesAllowed;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import javax.ws.rs.core.StreamingOutput;
import org.apache.commons.io.IOUtils;
import org.eurekaclinical.standardapis.exception.HttpStatusException;

/**
 * Operations related to a data file (doPost, status, etc)
 *
 * @author Andrew Post
 *
 */
@Path("/protected")
@RolesAllowed({ "researcher" })
public class OutputResource {

    private final EtlProperties etlProperties;
    private final DestinationDao destinationDao;
    private final FileSupport patientSetSenderSupport;

    /**
     * Create an object with the give data access object.
     *
     */
    @Inject
    public OutputResource(EtlProperties inEtlProperties, DestinationDao inDestinationDao,
            FileSupport inPatientSetSenderSupport) {
        this.etlProperties = inEtlProperties;
        this.destinationDao = inDestinationDao;
        this.patientSetSenderSupport = inPatientSetSenderSupport;
    }

    @GET
    @Path("/output/{destinationId}")
    @Produces(MediaType.APPLICATION_JSON)
    public Response doGet(@PathParam("destinationId") String inId) {
        DestinationEntity dest = this.destinationDao.getByName(inId);
        if (dest == null) {
            throw new HttpStatusException(Status.PRECONDITION_FAILED);
        }
        final File outputFile;
        try {
            outputFile = new File(this.etlProperties.outputFileDirectory(inId),
                    this.patientSetSenderSupport.getOutputName(inId));
        } catch (IOException ex) {
            throw new HttpStatusException(Status.INTERNAL_SERVER_ERROR, ex);
        }
        if (!outputFile.exists()) {
            throw new HttpStatusException(Status.NOT_FOUND);
        }
        StreamingOutput stream = new StreamingOutput() {
            @Override
            public void write(OutputStream os) throws IOException {
                try (InputStream inputStream = new FileInputStream(outputFile)) {
                    IOUtils.copy(inputStream, os);
                }
                os.flush();
            }
        };

        String outputType = dest.getOutputType();
        String outputName = dest.getOutputName();
        if (outputName == null) {
            outputName = inId + "_out";
        }
        return Response.ok(stream, outputType).header("content-disposition", "attachment; filename = " + outputName)
                .build();
    }

    @DELETE
    @Path("/output/{destinationId}")
    public Response doDelete(@PathParam("destinationId") String inId) {
        try {
            final File outputFile = new File(this.etlProperties.outputFileDirectory(inId),
                    this.patientSetSenderSupport.getOutputName(inId));
            if (!outputFile.exists()) {
                throw new HttpStatusException(Status.NOT_FOUND);
            }
            Files.delete(outputFile.toPath());
            return Response.noContent().build();
        } catch (IOException ex) {
            throw new HttpStatusException(Status.INTERNAL_SERVER_ERROR, ex);
        }
    }

}