StorageResource.java

package org.cbir.retrieval.web.rest;
/*
 * Copyright (c) 2009-2015. Authors: see NOTICE file.
 *
 * 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.
 */
import com.codahale.metrics.annotation.Timed;
import org.cbir.retrieval.security.AuthoritiesConstants;
import org.cbir.retrieval.service.RetrievalService;
import org.cbir.retrieval.service.exception.ResourceAlreadyExistException;
import org.cbir.retrieval.service.exception.ResourceNotFoundException;
import org.cbir.retrieval.web.rest.dto.StorageJSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import retrieval.server.RetrievalServer;
import retrieval.storage.Storage;

import javax.annotation.security.RolesAllowed;
import javax.inject.Inject;
import java.util.List;
import java.util.stream.Collectors;

/**
 * REST controller for managing storage.
 */
@RestController
@RequestMapping("/api")
public class StorageResource {

    private final Logger log = LoggerFactory.getLogger(StorageResource.class);

    @Inject
    private RetrievalService retrievalService;

    /**
     * POST -> Create a new storage.
     */
    @RequestMapping(value = "/storages",
        method = RequestMethod.POST,
        produces = MediaType.APPLICATION_JSON_VALUE)
    @Timed
    @RolesAllowed(AuthoritiesConstants.USER)
    public void create(@RequestBody StorageJSON storageJSON) throws ResourceAlreadyExistException {
        log.debug("REST request to save storage : {}", storageJSON.getId());
        RetrievalServer retrievalServer = retrievalService.getRetrievalServer();

        if(retrievalServer.getStorage(storageJSON.getId())!=null) {
            throw new ResourceAlreadyExistException("Storage "+ storageJSON.getId() +" already exist!");
        }

        try {
            retrievalServer.createStorage(storageJSON.getId());
        } catch(Exception e) {
              log.error(e.getMessage());
        }
    }

    @RequestMapping(value="/storages",
        method = RequestMethod.GET,
        produces = MediaType.APPLICATION_JSON_VALUE
    )
    @Timed
    List<StorageJSON> getAll() {
        log.debug("REST request to list storages : {}");

        RetrievalServer retrievalServer = retrievalService.getRetrievalServer();

        return retrievalServer.getStorageList()
                .stream()
                .map(StorageJSON::new)
                .collect(Collectors.toList());
    }


    @RequestMapping(value = "/storages/{id}",
        method = RequestMethod.GET,
        produces = MediaType.APPLICATION_JSON_VALUE)
    @Timed
    ResponseEntity<StorageJSON> get(@PathVariable String id) throws ResourceNotFoundException {
        log.debug("REST request to get storage : {}");

        RetrievalServer retrievalServer = retrievalService.getRetrievalServer();
        Storage storage = retrievalServer.getStorage(id);

        if(storage==null)
            throw new ResourceNotFoundException("Storage "+ id +" cannot be found!");

        return new ResponseEntity<>(new StorageJSON(storage), HttpStatus.OK);
//        return Optional.ofNullable(storage)
//            .map(itStorage -> new ResponseEntity<>(new StorageJSON(itStorage), HttpStatus.OK))
//            .orElse(new ResponseEntity<>(HttpStatus.NOT_FOUND));
    }


    @RequestMapping(value = "/storages/{id}",
        method = RequestMethod.DELETE,
        produces = MediaType.APPLICATION_JSON_VALUE)
    @Timed
    @RolesAllowed(AuthoritiesConstants.USER)
    public void delete(@PathVariable String id) throws Exception {
        log.debug("REST request to delete storage : {}", id);
        RetrievalServer retrievalServer = retrievalService.getRetrievalServer();

        if(retrievalServer.getStorage(id)==null)
            throw new ResourceNotFoundException("Storage "+ id +" cannot be found!");

        try {
            retrievalServer.deleteStorage(id);
        } catch(Exception e) {
            log.error(e.getMessage());
            throw e;
        }

    }

}