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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2011-2016 Incapture Technologies LLC
 *
 * 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 rapture.blob;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;

import org.apache.commons.io.IOUtils;

import rapture.common.CallingContext;
import rapture.common.RaptureURI;

public abstract class BaseBlobStore implements BlobStore {

    private String instanceName;

    @Override
    public void setInstanceName(String instanceName) {
        this.instanceName = instanceName;
    }

    public String getInstanceName() {
        return instanceName;
    }

    @Override
    public InputStream getBlobPart(CallingContext context, RaptureURI blobUri, Long start, Long size) {
        try {
            return new ByteArrayInputStream(Arrays.copyOfRange(IOUtils.toByteArray(getBlob(context, blobUri)), start.intValue(), start.intValue() + size.intValue()));
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
    }

    @Override
    public Long getBlobSize(CallingContext context, RaptureURI blobUri) {
        try {
            long retVal = IOUtils.toByteArray(getBlob(context, blobUri)).length;
            return retVal;
        } catch (IOException e) {
            throw new IllegalStateException(e);
        }
    }
}