001/*
002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Florent Guillaume
018 */
019package org.nuxeo.ecm.core;
020
021import java.io.ByteArrayInputStream;
022import java.io.IOException;
023import java.io.InputStream;
024import java.util.HashMap;
025import java.util.Map;
026import java.util.concurrent.atomic.AtomicLong;
027
028import org.apache.commons.io.IOUtils;
029import org.nuxeo.ecm.core.api.Blob;
030import org.nuxeo.ecm.core.blob.AbstractBlobProvider;
031import org.nuxeo.ecm.core.blob.BlobInfo;
032import org.nuxeo.ecm.core.blob.SimpleManagedBlob;
033
034/**
035 * Dummy storage in memory.
036 */
037public class DummyBlobProvider extends AbstractBlobProvider {
038
039    protected Map<String, byte[]> blobs;
040
041    protected AtomicLong counter;
042
043    @Override
044    public void initialize(String blobProviderId, Map<String, String> properties) throws IOException {
045        super.initialize(blobProviderId, properties);
046        blobs = new HashMap<>();
047        counter = new AtomicLong();
048    }
049
050    @Override
051    public void close() {
052        blobs.clear();
053    }
054
055    @Override
056    public Blob readBlob(BlobInfo blobInfo) {
057        return new SimpleManagedBlob(blobInfo) {
058            private static final long serialVersionUID = 1L;
059
060            @Override
061            public InputStream getStream() throws IOException {
062                int colon = key.indexOf(':');
063                String k = colon < 0 ? key : key.substring(colon + 1);
064                byte[] bytes = blobs.get(k);
065                return new ByteArrayInputStream(bytes);
066            }
067        };
068    }
069
070    @Override
071    public String writeBlob(Blob blob) throws IOException {
072        byte[] bytes;
073        try (InputStream in = blob.getStream()) {
074            bytes = IOUtils.toByteArray(in);
075        }
076        String k = String.valueOf(counter.incrementAndGet());
077        blobs.put(k, bytes);
078        return k;
079    }
080
081}