001/*
002 * (C) Copyright 2019 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 *     bdelbosc
018 */
019package org.nuxeo.ecm.core.transientstore.computation;
020
021import java.io.IOException;
022import java.util.Collections;
023import java.util.List;
024import java.util.Map;
025
026import org.apache.logging.log4j.LogManager;
027import org.apache.logging.log4j.Logger;
028import org.nuxeo.ecm.core.api.Blob;
029import org.nuxeo.ecm.core.api.impl.blob.ByteArrayBlob;
030import org.nuxeo.ecm.core.transientstore.api.TransientStore;
031import org.nuxeo.ecm.core.transientstore.api.TransientStoreService;
032import org.nuxeo.ecm.core.work.BaseOverflowRecordFilter;
033import org.nuxeo.runtime.api.Framework;
034
035/**
036 * Filter that use a Transient Store to pass big record value. The TTL needs to be configured at the TransientStore
037 * level.
038 *
039 * @since 11.1
040 */
041public class TransientStoreOverflowRecordFilter extends BaseOverflowRecordFilter {
042    private static final Logger log = LogManager.getLogger(TransientStoreOverflowRecordFilter.class);
043
044    @Override
045    public void init(Map<String, String> options) {
046        super.init(options);
047        // check for ts availability
048        getTransientStore();
049    }
050
051    protected TransientStore getTransientStore() {
052        return Framework.getService(TransientStoreService.class).getStore(getStoreName());
053    }
054
055    @Override
056    protected void storeValue(String recordKey, byte[] data) {
057        String key = getPrefixedKey(recordKey);
058        Blob blob = new ByteArrayBlob(data);
059        TransientStore store = getTransientStore();
060        store.putBlobs(key, Collections.singletonList(blob));
061        store.setCompleted(key, true);
062
063    }
064
065    @Override
066    protected byte[] fetchValue(String recordKey) {
067        String key = getPrefixedKey(recordKey);
068        List<Blob> blobs = getTransientStore().getBlobs(key);
069        Blob blob = blobs == null || blobs.isEmpty() ? null : blobs.get(0);
070        if (blob == null) {
071            log.error("Blob value not found for record: {}", recordKey);
072            return null;
073        }
074        try {
075            return blob.getByteArray();
076        } catch (IOException e) {
077            log.error("Cannot get bytes of blob value for record: {}", recordKey, e);
078            return null;
079        }
080    }
081
082}