001/*
002 * (C) Copyright 2014 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 *     Thierry Delprat
018 */
019package org.nuxeo.elasticsearch.audit.pageprovider;
020
021import java.util.ArrayList;
022import java.util.List;
023
024import org.apache.commons.logging.Log;
025import org.apache.commons.logging.LogFactory;
026import org.nuxeo.ecm.core.api.CoreSession;
027import org.nuxeo.ecm.core.api.DocumentModel;
028import org.nuxeo.ecm.core.api.SortInfo;
029import org.nuxeo.ecm.platform.audit.api.document.AdditionalDocumentAuditParams;
030import org.nuxeo.ecm.platform.audit.api.document.DocumentAuditHelper;
031
032public class ESDocumentHistoryPageProvider extends ESAuditPageProvider {
033
034    private static final long serialVersionUID = 1L;
035
036    protected Log log = LogFactory.getLog(ESDocumentHistoryPageProvider.class);
037
038    protected Object[] newParams;
039
040    protected static String singleQuery = "            {\n" + "                \"bool\" : {\n"
041            + "                  \"must\" : {\n" + "                    \"match\" : {\n"
042            + "                      \"docUUID\" : {\n" + "                        \"query\" : \"?\",\n"
043            + "                        \"type\" : \"boolean\"\n" + "                      }\n"
044            + "                    }\n" + "                  }\n" + "                }\n"
045            + "              }          \n" + "";
046
047    protected static String complexQuery = "{\n" + "    \"filtered\" : {\n" + "        \"query\" : {\n"
048            + "            \"match_all\" : { }\n" + "        },\n" + "        \"filter\" : {\n"
049            + "            \"or\" : [\n" + "                {\n"
050            + "                    \"term\" : { \"docUUID\" : \"?\" }\n" + "                },\n"
051            + "                {\n" + "                    \"bool\" : {\n" + "                      \"must\" : [{\n"
052            + "                        \"term\" : { \"docUUID\" : \"?\" }\n" + "                      },\n"
053            + "                      {\n" + "                        \"range\" : {\n"
054            + "                          \"eventDate\" :  { \"lte\" : \"?\"}\n" + "                        }\n"
055            + "                      }]\n" + "                  }\n" + "                }\n" + "            ]\n"
056            + "        }\n" + "    }\n" + "}\n" + "\n" + "";
057
058    @Override
059    protected String getFixedPart() {
060        if (getParameters().length == 3) {
061            return complexQuery;
062        } else {
063            return singleQuery;
064        }
065    }
066
067    @Override
068    public List<SortInfo> getSortInfos() {
069
070        List<SortInfo> sort = super.getSortInfos();
071        if (sort == null || sort.size() == 0) {
072            sort = new ArrayList<SortInfo>();
073            sort.add(new SortInfo("eventDate", true));
074            sort.add(new SortInfo("id", true));
075        }
076        return sort;
077    }
078
079    @Override
080    public Object[] getParameters() {
081        if (newParams == null) {
082            Object[] params = super.getParameters();
083            if (params.length != 1) {
084                log.error(this.getClass().getSimpleName()
085                        + " Expect only one parameter the document uuid, unexpected behavior may occur");
086            }
087            CoreSession session;
088            String uuid;
089            if (params[0] instanceof DocumentModel) {
090                DocumentModel doc = (DocumentModel) params[0];
091                uuid = doc.getId();
092                session = doc.getCoreSession();
093            } else {
094                session = (CoreSession) getProperties().get(CORE_SESSION_PROPERTY);
095                uuid = params[0].toString();
096            }
097            if (session != null) {
098                AdditionalDocumentAuditParams additionalParams = DocumentAuditHelper.getAuditParamsForUUID(uuid,
099                        session);
100                if (additionalParams != null) {
101                    newParams = new Object[] { uuid, additionalParams.getTargetUUID(), additionalParams.getMaxDate() };
102                } else {
103                    newParams = new Object[] { uuid };
104                }
105            } else {
106                log.warn("No core session found: cannot compute all info to get complete audit entries");
107                return params;
108            }
109        }
110        return newParams;
111    }
112
113    @Override
114    public boolean hasChangedParameters(Object[] parameters) {
115        return getParametersChanged(this.parameters, parameters);
116    }
117
118}