nl.dtls.fairdatapoint.api.controller.DataAccessorController.java Source code

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Here is the source code for nl.dtls.fairdatapoint.api.controller.DataAccessorController.java

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package nl.dtls.fairdatapoint.api.controller;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import nl.dtls.fairdatapoint.api.controller.utils.HttpHeadersUtils;
import nl.dtls.fairdatapoint.api.controller.utils.LoggerUtils;
import nl.dtls.fairdatapoint.service.DataAccessorService;
import nl.dtls.fairdatapoint.service.DataAccessorServiceException;
import org.apache.http.HttpHeaders;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.openrdf.rio.RDFFormat;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

/**
 *
 * @author Rajaram Kaliyaperumal
 * @since 2016-01-07
 * @version 0.1
 */
@RestController
@Api(description = "FDP data accessor")
@RequestMapping(value = "/{catalogID}/{datasetID}/{distributionID:[^.]+}")
public class DataAccessorController {

    private final static Logger LOGGER = LogManager.getLogger(DataAccessorController.class);
    @Autowired
    private DataAccessorService dataAccessorService;

    @ApiOperation(value = "Dataset distribution metadata")
    @RequestMapping(produces = { "text/turtle", "application/ld+json", "application/rdf+xml",
            "text/n3" }, method = RequestMethod.GET)
    public String getDatasetDistribution(@PathVariable final String catalogID, @PathVariable final String datasetID,
            @PathVariable final String distributionID, HttpServletRequest request, HttpServletResponse response) {

        LOGGER.info("Request to get dataset's distribution {}", distributionID);
        LOGGER.info("GET : " + request.getRequestURL());
        String responseBody = null;
        String acceptHeader = request.getHeader(HttpHeaders.ACCEPT);
        RDFFormat requesetedContentType = HttpHeadersUtils.getRequestedAcceptHeader(acceptHeader);
        try {
            responseBody = dataAccessorService.retrieveDatasetDistribution(catalogID, datasetID, distributionID,
                    requesetedContentType);
            HttpHeadersUtils.set200ResponseHeaders(responseBody, response, requesetedContentType);
        } catch (DataAccessorServiceException ex) {
            HttpHeadersUtils.set500ResponseHeaders(response, ex);
        }
        LoggerUtils.logRequest(LOGGER, request, response);
        return responseBody;
    }

}