001/*
002 * (C) Copyright 2019 Nuxeo (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.blob;
020
021import java.io.IOException;
022import java.util.Map;
023
024/**
025 * Blob storage in memory, mostly for unit tests.
026 *
027 * @since 11.1
028 */
029public class InMemoryBlobProvider extends BlobStoreBlobProvider {
030
031    protected DigestConfiguration digestConfiguration;
032
033    @Override
034    protected BlobStore getBlobStore(String blobProviderId, Map<String, String> properties) throws IOException {
035        digestConfiguration = new DigestConfiguration(null, properties);
036        PropertyBasedConfiguration config = new PropertyBasedConfiguration(null, properties);
037        KeyStrategy keyStrategy = getKeyStrategy();
038        BlobStore store = new InMemoryBlobStore("mem", config, keyStrategy);
039        if (isTransactional()) {
040            BlobStore transientStore;
041            if (store.hasVersioning()) {
042                // if versioning is used, we don't need a separate transient store for transactions
043                transientStore = store;
044            } else {
045                transientStore = new InMemoryBlobStore("mem_tmp", keyStrategy);
046            }
047            store = new TransactionalBlobStore(store, transientStore);
048        }
049        if (config.getBooleanProperty("test-caching")) { // for tests
050            CachingConfiguration cachingConfiguration = new CachingConfiguration(null, properties);
051            store = new CachingBlobStore("Cache", store, cachingConfiguration);
052        }
053        return store;
054    }
055
056    @Override
057    public void close() {
058        // nothing
059    }
060
061    @Override
062    protected String getDigestAlgorithm() {
063        return digestConfiguration.digestAlgorithm;
064    }
065
066}