net.gbmb.collector.impl.TestTempStorage.java Source code

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Here is the source code for net.gbmb.collector.impl.TestTempStorage.java

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/*
 * Copyright 2014 Guillaume Bailleul
 *
 * 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 net.gbmb.collector.impl;

import net.gbmb.collector.TemporaryStorage;
import org.apache.commons.io.IOUtils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.*;

public class TestTempStorage implements TemporaryStorage {

    private Map<String, Map<String, byte[]>> contents = new HashMap<String, Map<String, byte[]>>();

    private synchronized Map<String, byte[]> getCidContents(String cid) {
        Map<String, byte[]> cidContents = contents.get(cid);
        if (cidContents == null) {
            cidContents = new HashMap<String, byte[]>();
            contents.put(cid, cidContents);
        }
        return cidContents;
    }

    @Override
    public String store(String cid, InputStream content) throws IOException {
        String contentId = UUID.randomUUID().toString();
        return store(cid, contentId, content);
    }

    @Override
    public String store(String cid, String contentId, InputStream content) throws IOException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        IOUtils.copy(content, bos);
        IOUtils.closeQuietly(content);
        IOUtils.closeQuietly(bos);
        getCidContents(cid).put(contentId, bos.toByteArray());
        return contentId;
    }

    @Override
    public InputStream get(String cid, String contentId) throws IOException {
        return new ByteArrayInputStream(getCidContents(cid).get(contentId));
    }

    @Override
    public List<String> listCollections() throws IOException {
        return new ArrayList<String>(contents.keySet());
    }

    @Override
    public void dropCollection(String cid) throws IOException {
        contents.remove(cid);
    }
}