001/*
002 * (C) Copyright 2016 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.importer.stream.consumer;
020
021import static org.nuxeo.runtime.transaction.TransactionHelper.commitOrRollbackTransaction;
022
023import java.io.Serializable;
024import java.util.Map;
025
026import org.apache.commons.logging.Log;
027import org.apache.commons.logging.LogFactory;
028import org.nuxeo.ecm.core.api.Blob;
029import org.nuxeo.ecm.core.api.CoreInstance;
030import org.nuxeo.ecm.core.api.CoreSession;
031import org.nuxeo.ecm.core.api.DocumentModel;
032import org.nuxeo.ecm.core.api.model.PropertyNotFoundException;
033import org.nuxeo.ecm.core.blob.BlobInfo;
034import org.nuxeo.ecm.core.blob.SimpleManagedBlob;
035import org.nuxeo.importer.stream.message.DocumentMessage;
036import org.nuxeo.lib.stream.pattern.consumer.AbstractConsumer;
037import org.nuxeo.runtime.transaction.TransactionHelper;
038
039/**
040 * Consumes DocumentMessage and produce Nuxeo document.
041 *
042 * @since 9.1
043 */
044public class DocumentMessageConsumer extends AbstractConsumer<DocumentMessage> {
045    private static final Log log = LogFactory.getLog(DocumentMessageConsumer.class);
046
047    protected final String rootPath;
048
049    protected final String repositoryName;
050
051    protected CoreSession session;
052
053    public DocumentMessageConsumer(String consumerId, String repositoryName, String rootPath) {
054        super(consumerId);
055        this.rootPath = rootPath;
056        this.repositoryName = repositoryName;
057    }
058
059    @Override
060    public void close() throws Exception {
061        super.close();
062        if (session != null) {
063            session.close();
064            TransactionHelper.commitOrRollbackTransaction();
065        }
066    }
067
068    @Override
069    public void begin() {
070        TransactionHelper.startTransaction();
071        if (session == null) {
072            this.session = CoreInstance.openCoreSessionSystem(repositoryName);
073        }
074    }
075
076    @Override
077    public void accept(DocumentMessage message) {
078        DocumentModel doc = session.createDocumentModel(rootPath + message.getParentPath(), message.getName(),
079                message.getType());
080        doc.putContextData(CoreSession.SKIP_DESTINATION_CHECK_ON_CREATE, true);
081        Blob blob = getBlob(message);
082        if (blob != null) {
083            // doc.setProperty("file", "filename", blob.getFilename());
084            doc.setProperty("file", "content", blob);
085        }
086        Map<String, Serializable> props = message.getProperties();
087        if (props != null && !props.isEmpty()) {
088            setDocumentProperties(doc, props);
089        }
090        doc = session.createDocument(doc);
091    }
092
093    protected Blob getBlob(DocumentMessage message) {
094        Blob blob = null;
095        if (message.getBlob() != null) {
096            blob = message.getBlob();
097        } else if (message.getBlobInfo() != null) {
098            BlobInfo blobInfo = message.getBlobInfo();
099            blob = new SimpleManagedBlob(blobInfo);
100        }
101        return blob;
102    }
103
104    @Override
105    public void commit() {
106        log.debug("commit");
107        session.save();
108        // TODO: here if tx is in rollback we must throw something
109        commitOrRollbackTransaction();
110    }
111
112    @Override
113    public void rollback() {
114        log.info("rollback");
115        TransactionHelper.setTransactionRollbackOnly();
116        TransactionHelper.commitOrRollbackTransaction();
117    }
118
119    protected void setDocumentProperties(DocumentModel doc, Map<String, Serializable> properties) {
120        for (Map.Entry<String, Serializable> entry : properties.entrySet()) {
121            try {
122                doc.setPropertyValue(entry.getKey(), entry.getValue());
123            } catch (PropertyNotFoundException e) {
124                String message = String.format("Property '%s' not found on document type: %s. Skipping it.",
125                        entry.getKey(), doc.getType());
126                log.error(message, e);
127            }
128        }
129    }
130
131}