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 *     Gabriel Barata <[email protected]>
018 */
019package org.nuxeo.ecm.automation.jaxrs.io.operations;
020
021import org.nuxeo.ecm.core.api.Blob;
022import org.nuxeo.ecm.core.api.NuxeoException;
023import org.nuxeo.ecm.core.blob.BlobInfo;
024import org.nuxeo.ecm.core.blob.BlobManager;
025import org.nuxeo.ecm.core.blob.BlobProvider;
026import org.nuxeo.runtime.api.Framework;
027
028import java.io.IOException;
029
030/**
031 * Resolves a blob passed by key as input of an operation.
032 *
033 * @since 8.4
034 */
035public class BlobInputResolver implements InputResolver<Blob> {
036
037    @Override
038    public String getType() {
039        return "blob";
040    }
041
042    @Override
043    public Blob getInput(String content) {
044        return blobFromKey(content);
045    }
046
047    public static Blob blobFromKey(String key) {
048        try {
049            int colon = key.indexOf(':');
050            if (colon < 0) {
051                throw new NuxeoException("Invalid blob key format: " + key);
052            }
053            String providerId = key.substring(0, colon);
054            BlobProvider blobProvider = Framework.getService(BlobManager.class).getBlobProvider(providerId);
055            BlobInfo blobInfo = new BlobInfo();
056            blobInfo.key = key;
057            if (blobProvider.performsExternalAccessControl(blobInfo)) {
058                return blobProvider.readBlob(blobInfo);
059            } else {
060                throw new NuxeoException("BlobProvider " + providerId + " cannot perform access control for key: " +
061                    key);
062            }
063        } catch (IOException e) {
064            throw new NuxeoException(e);
065        }
066    }
067}