net.solarnetwork.node.backup.s3.S3BackupResource.java Source code

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Here is the source code for net.solarnetwork.node.backup.s3.S3BackupResource.java

Source

/* ==================================================================
 * S3BackupResource.java - 4/10/2017 6:40:35 AM
 * 
 * Copyright 2017 SolarNetwork.net Dev Team
 * 
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of 
 * the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License 
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
 * 02111-1307 USA
 * ==================================================================
 */

package net.solarnetwork.node.backup.s3;

import java.io.IOException;
import java.io.InputStream;
import com.amazonaws.services.s3.model.S3Object;
import net.solarnetwork.node.backup.BackupResource;

/**
 * {@link BackupResource} for a S3 object.
 * 
 * <p>
 * The {@link #getInputStream()} method will return new InputStream instances
 * each time, each stream will fetch from S3 anew.
 * </p>
 * 
 * @author matt
 * @version 1.0
 */
public class S3BackupResource implements BackupResource {

    private final S3Client client;
    private final S3BackupResourceMetadata metadata;

    public S3BackupResource(S3Client client, S3BackupResourceMetadata metadata) {
        super();
        this.client = client;
        this.metadata = metadata;
    }

    @Override
    public String getBackupPath() {
        return metadata.getBackupPath();
    }

    @Override
    public InputStream getInputStream() throws IOException {
        S3Object obj = client.getObject(metadata.getObjectKey());
        return obj.getObjectContent();
    }

    @Override
    public long getModificationDate() {
        return metadata.getModificationDate();
    }

    @Override
    public String getProviderKey() {
        return metadata.getProviderKey();
    }

    @Override
    public String getSha256Digest() {
        return metadata.getDigest();
    }

}