001/*
002 * Stallion Core: A Modern Web Framework
003 *
004 * Copyright (C) 2015 - 2016 Stallion Software LLC.
005 *
006 * This program is free software: you can redistribute it and/or modify it under the terms of the
007 * GNU General Public License as published by the Free Software Foundation, either version 2 of
008 * the License, or (at your option) any later version. This program is distributed in the hope that
009 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
011 * License for more details. You should have received a copy of the GNU General Public License
012 * along with this program.  If not, see <http://www.gnu.org/licenses/gpl-2.0.html>.
013 *
014 *
015 *
016 */
017
018package io.stallion.services;
019
020import io.stallion.exceptions.ConfigException;
021import io.stallion.exceptions.UsageException;
022import io.stallion.settings.Settings;
023
024import java.io.File;
025import java.util.Map;
026
027import static io.stallion.utils.Literals.*;
028
029
030public abstract class CloudStorageService {
031    private static CloudStorageService _instance;
032
033    public static CloudStorageService instance() {
034        if (_instance == null) {
035            load();
036        }
037        return _instance;
038    }
039
040    public static void load() {
041        if (Settings.instance().getCloudStorage() == null) {
042            throw new ConfigException("[cloudStorage] section of stallion.toml is empty. Cannot initialize cloud storage.");
043        }
044        if (empty(Settings.instance().getCloudStorage().getJavaClass())) {
045            _instance = new S3StorageService();
046        } else {
047            throw new UsageException("Loading cloud controller dynamically not yet implemented.");
048        }
049
050    }
051
052    public static void load(CloudStorageService controller) {
053        _instance = controller;
054    }
055
056
057    public abstract String getSignedUploadUrl(String bucket, String fileKey, String contentType, Map headers);
058
059    public abstract void uploadFile(File file, String bucket, String fileKey, boolean isPublic);
060    public abstract void uploadFile(File file, String bucket, String fileKey, boolean isPublic, String contentType, Map<String, String> headers);
061}