dnet-applications/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/funders/FundersApiController.java

75 lines
2.6 KiB
Java

package eu.dnetlib.openaire.funders;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import eu.dnetlib.openaire.common.AbstractExporterController;
import eu.dnetlib.openaire.exporter.exceptions.FundersApiException;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.responses.ApiResponse;
import io.swagger.v3.oas.annotations.responses.ApiResponses;
import io.swagger.v3.oas.annotations.tags.Tag;
@RestController
@CrossOrigin(origins = {
"*"
})
@ConditionalOnProperty(value = "openaire.exporter.enable.funders", havingValue = "true")
@Tag(name = "OpenAIRE funders API", description = "the OpenAIRE funders API")
public class FundersApiController extends AbstractExporterController {
@Autowired
private FunderService service;
private static final Log log = LogFactory.getLog(FundersApiController.class);
@RequestMapping(value = "/funders", produces = {
"application/json"
}, method = RequestMethod.GET)
@Operation(summary = "get all funders", description = "get all funders")
@ApiResponses(value = {
@ApiResponse(responseCode = "200", description = "OK"),
@ApiResponse(responseCode = "500", description = "unexpected error")
})
public void getFunders(final HttpServletResponse res) throws FundersApiException {
res.setContentType(MediaType.APPLICATION_JSON_VALUE);
final File file = service.getTempFile();
if (file == null) {
log.error("Missing temp file (NULL)");
throw new FundersApiException("Missing temp file (NULL)");
}
if (!file.exists()) {
log.error("Missing temp file " + service.getTempFile());
throw new FundersApiException("Missing temp file " + service.getTempFile());
}
try (final InputStream in = new FileInputStream(file); OutputStream out = res.getOutputStream()) {
IOUtils.copy(in, out);
return;
} catch (final Exception e) {
log.error("Error reading file " + service.getTempFile(), e);
throw new FundersApiException("Error reading file " + service.getTempFile(), e);
}
}
}