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org.kgrid.shelf.controller.BinaryController Maven / Gradle / Ivy
package org.kgrid.shelf.controller;
import org.apache.commons.lang3.StringUtils;
import org.kgrid.shelf.ShelfResourceForbidden;
import org.kgrid.shelf.domain.ArkId;
import org.kgrid.shelf.repository.KnowledgeObjectRepository;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.core.io.InputStreamResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import javax.activation.FileTypeMap;
import javax.activation.MimetypesFileTypeMap;
import javax.servlet.http.HttpServletRequest;
import java.io.InputStream;
import java.util.Optional;
@RestController
@RequestMapping("${kgrid.shelf.endpoint:kos}")
@CrossOrigin(origins = "${cors.url:}")
@ConditionalOnProperty(name = "kgrid.shelf.expose.artifacts", matchIfMissing = true)
public class BinaryController extends ShelfExceptionHandler {
@Bean
public static MimetypesFileTypeMap getFilemap() {
MimetypesFileTypeMap fileTypeMap = new MimetypesFileTypeMap();
fileTypeMap.addMimeTypes(
"application/yaml yaml YAML\n"
+ "application/json json JSON\n"
+ "text/javascript js JS\n"
+ "application/pdf pdf PDF\n"
+ "text/csv csv CSV\n"
+ "application/zip zip ZIP");
return fileTypeMap;
}
FileTypeMap fileTypeMap;
public BinaryController(
KnowledgeObjectRepository koRepo,
Optional kod,
MimetypesFileTypeMap fileTypeMap) {
super(koRepo, kod);
this.fileTypeMap = fileTypeMap;
}
@GetMapping(path = "/{naan}/{name}/{version}/**")
public ResponseEntity getBinary(
@PathVariable String naan,
@PathVariable String name,
@PathVariable String version,
HttpServletRequest request) {
String childPath = getChildPath(naan, name, version, request.getRequestURI());
log.info("getting ko resource " + naan + "/" + name + "/" + version + "/" + childPath);
final ArkId arkId = new ArkId(naan, name, version);
InputStream fileStream = koRepo.getBinaryStream(arkId, childPath);
HttpHeaders headers = getContentHeaders(childPath, arkId);
return new ResponseEntity<>(new InputStreamResource(fileStream), headers, HttpStatus.OK);
}
private HttpHeaders getContentHeaders(String childPath, ArkId arkId) {
HttpHeaders headers = new HttpHeaders();
String contentType = fileTypeMap.getContentType(childPath);
headers.add("Content-Type", contentType);
String filename =
childPath.contains("/") ? StringUtils.substringAfterLast(childPath, "/") : childPath;
String contentDisposition = "inline; filename=\"" + filename + "\"";
headers.add("Content-Disposition", contentDisposition);
headers.add("Content-Length", String.valueOf(koRepo.getBinarySize(arkId, childPath)));
return headers;
}
private String getChildPath(String naan, String name, String version, String requestURI) {
String filepath =
StringUtils.substringAfterLast(
requestURI, StringUtils.join(naan, "/", name, "/", version, "/"));
if (filepath.contains("../")) {
throw new ShelfResourceForbidden(
"Cannot navigate up a directory to get a resource outside of the ark:/"
+ naan
+ "/"
+ name
+ "/"
+ version
+ " knowledge object.");
}
return filepath;
}
}
