org.ambraproject.rhino.rest.controller.ContentRepoController.java Source code

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Here is the source code for org.ambraproject.rhino.rest.controller.ContentRepoController.java

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/*
 * Copyright (c) 2017 Public Library of Science
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package org.ambraproject.rhino.rest.controller;

import org.ambraproject.rhino.config.RuntimeConfiguration;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.net.URI;

@Controller
public class ContentRepoController extends RestController {

    @Autowired
    private RuntimeConfiguration runtimeConfiguration;

    @RequestMapping(value = "repo/{key}/{version}", method = RequestMethod.GET)
    public ResponseEntity<?> serve(@PathVariable("key") String key, @PathVariable("version") String version)
            throws IOException {
        RuntimeConfiguration.ContentRepoEndpoint editorialBucket = runtimeConfiguration.getEditorialStorage();
        URI address;
        String bucketName;
        if (editorialBucket == null || (address = editorialBucket.getAddress()) == null
                || (bucketName = editorialBucket.getDefaultBucket()) == null) {
            throw new RuntimeException("contentRepo.editorial is not configured");
        }
        if ("file".equals(address.getScheme())) {
            return serveInDevMode(address, key, version);
        }

        return serveFromRemoteRepo(address, bucketName, key, version);

    }

    private static ResponseEntity<?> serveFromRemoteRepo(URI contentRepoAddress, String bucket, String key,
            String version) {
        URI location = URI.create(String.format("%s/objects/%s?key=%s", // TODO Use version
                contentRepoAddress, bucket, key));
        HttpHeaders headers = new HttpHeaders();
        headers.setLocation(location);
        return new ResponseEntity<Object>(headers, HttpStatus.FOUND);
    }

    private static ResponseEntity<String> serveInDevMode(URI devModeRepo, String key, String version)
            throws IOException {
        File path = new File(devModeRepo.getPath(), key);
        if (!path.exists()) {
            return respondWithStatus(HttpStatus.NOT_FOUND);
        }

        String responseBody;
        try (Reader reader = new FileReader(path)) {
            responseBody = IOUtils.toString(reader);
        }
        return new ResponseEntity<>(responseBody, HttpStatus.OK);
    }

}