001/*
002 * (C) Copyright 2018 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 *     Funsho David
018 */
019
020package org.nuxeo.ecm.automation.core.util;
021
022import java.io.IOException;
023
024import javax.servlet.http.HttpServletResponse;
025
026import org.nuxeo.ecm.core.api.Blob;
027import org.nuxeo.ecm.core.api.NuxeoException;
028import org.nuxeo.ecm.core.blob.BlobInfo;
029import org.nuxeo.ecm.core.blob.BlobManager;
030import org.nuxeo.ecm.core.blob.BlobProvider;
031import org.nuxeo.runtime.api.Framework;
032import com.fasterxml.jackson.databind.node.ObjectNode;
033
034/**
035 * @since 10.2
036 */
037public class JSONManagedBlobDecoder implements JSONBlobDecoder {
038
039    @Override
040    public Blob getBlobFromJSON(ObjectNode jsonObject) {
041
042        if (!(jsonObject.has("providerId") && jsonObject.has("key"))) {
043            return null;
044        }
045
046        String providerId = jsonObject.get("providerId").textValue();
047        BlobProvider blobProvider = Framework.getService(BlobManager.class).getBlobProvider(providerId);
048        if (blobProvider == null) {
049            return null;
050        }
051
052        if (!blobProvider.hasCreateFromKeyPermission()) {
053            throw new NuxeoException("The current user does not have the rights to fetch the blob",
054                    HttpServletResponse.SC_UNAUTHORIZED);
055        }
056
057        try {
058            BlobInfo blobInfo = new BlobInfo();
059            blobInfo.key = providerId + ":" + jsonObject.get("key").textValue();
060            return blobProvider.readBlob(blobInfo);
061        } catch (IOException e) {
062            throw new NuxeoException(e);
063        }
064    }
065
066}