com.webpagebytes.cms.engine.FileContentBuilder.java Source code

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Here is the source code for com.webpagebytes.cms.engine.FileContentBuilder.java

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/*
 *   Copyright 2014 Webpagebytes
 *
 * 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.
*/

package com.webpagebytes.cms.engine;

import java.io.IOException;

import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.io.IOUtils;

import com.webpagebytes.cms.WPBFilePath;
import com.webpagebytes.cms.WPBFileStorage;
import com.webpagebytes.cms.WPBFilesCache;
import com.webpagebytes.cms.cmsdata.WPBFile;
import com.webpagebytes.cms.exception.WPBException;
import com.webpagebytes.cms.exception.WPBIOException;

public class FileContentBuilder {
    private WPBFileStorage cloudFileStorage;
    private WPBFilesCache filesCache;

    public FileContentBuilder(WPBCacheInstances cacheInstances) {
        filesCache = cacheInstances.getFilesCache();
        cloudFileStorage = WPBFileStorageFactory.getInstance();
    }

    public void initialize() {
    }

    public WPBFile find(String externalKey) throws WPBException {
        return filesCache.getByExternalKey(externalKey);
    }

    public InputStream getFileContent(WPBFile file) throws WPBException {
        WPBFilePath cloudFile = new WPBFilePath("public", file.getBlobKey());
        try {
            return cloudFileStorage.getFileContent(cloudFile);
        } catch (IOException e) {
            throw new WPBException("cannot get file content ", e);
        }
    }

    public void writeFileContent(WPBFile wbFile, OutputStream os) throws WPBException {

        InputStream is = getFileContent(wbFile);
        try {
            IOUtils.copy(is, os);

        } catch (IOException e) {
            throw new WPBIOException(e.getMessage(), e);
        } finally {
            IOUtils.closeQuietly(is);
        }
    }
}