Java tutorial
/* * Copyright 2016 Tino Siegmund, Michael Wodniok * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.noorganization.instalistsynch.controller.synch.impl; import android.content.Context; import android.database.Cursor; import android.util.Log; import com.fasterxml.jackson.databind.util.ISO8601Utils; import org.noorganization.instalist.comm.message.TagInfo; import org.noorganization.instalist.enums.eActionType; import org.noorganization.instalist.enums.eModelType; import org.noorganization.instalist.model.LogInfo; import org.noorganization.instalist.model.Tag; import org.noorganization.instalist.presenter.ITagController; import org.noorganization.instalist.presenter.implementation.ControllerFactory; import org.noorganization.instalistsynch.controller.callback.IAuthorizedCallbackCompleted; import org.noorganization.instalistsynch.controller.callback.IAuthorizedInsertCallbackCompleted; import org.noorganization.instalistsynch.controller.local.dba.IClientLogDbController; import org.noorganization.instalistsynch.controller.local.dba.IGroupAuthAccessDbController; import org.noorganization.instalistsynch.controller.local.dba.IGroupAuthDbController; import org.noorganization.instalistsynch.controller.local.dba.IModelMappingDbController; import org.noorganization.instalistsynch.controller.local.dba.ITaskErrorLogDbController; import org.noorganization.instalistsynch.controller.local.dba.LocalSqliteDbControllerFactory; import org.noorganization.instalistsynch.controller.local.dba.impl.ModelMappingDbFactory; import org.noorganization.instalistsynch.controller.local.dba.impl.TaskErrorLogDbController; import org.noorganization.instalistsynch.controller.network.ISessionController; import org.noorganization.instalistsynch.controller.network.impl.InMemorySessionController; import org.noorganization.instalistsynch.controller.network.model.INetworkController; import org.noorganization.instalistsynch.controller.network.model.RemoteModelAccessControllerFactory; import org.noorganization.instalistsynch.controller.synch.ISynch; import org.noorganization.instalistsynch.controller.synch.task.ITask; import org.noorganization.instalistsynch.events.TagSynchFromNetworkFinished; import org.noorganization.instalistsynch.model.GroupAccess; import org.noorganization.instalistsynch.model.GroupAuth; import org.noorganization.instalistsynch.model.ModelMapping; import org.noorganization.instalistsynch.model.TaskErrorLog; import org.noorganization.instalistsynch.utils.Constants; import org.noorganization.instalistsynch.utils.GlobalObjects; import java.text.ParsePosition; import java.util.Date; import java.util.List; import java.util.TimeZone; import de.greenrobot.event.EventBus; /** * The synchronization for the tags. * Created by Desnoo on 24.02.2016. */ public class TagSynch implements ISynch { private static final String TAG = "TagSynch"; private ISessionController mSessionController; private ITagController mTagController; private IModelMappingDbController mTagModelMappingController; private IClientLogDbController mClientLogDbController; private IGroupAuthDbController mGroupAuthDbController; private INetworkController<TagInfo> mTagNetworkController; private ITaskErrorLogDbController mTaskErrorLogDbController; private eModelType mModelType; private EventBus mEventBus; public TagSynch(eModelType _type) { mModelType = _type; Context context = GlobalObjects.getInstance().getApplicationContext(); mSessionController = InMemorySessionController.getInstance(); mTagController = ControllerFactory.getTagController(context); mTagModelMappingController = ModelMappingDbFactory.getInstance().getSqliteTagMappingController(); mClientLogDbController = LocalSqliteDbControllerFactory.getClientLogController(context); mGroupAuthDbController = LocalSqliteDbControllerFactory.getGroupAuthDbController(context); mTagNetworkController = RemoteModelAccessControllerFactory.getInstance().getTagNetworkController(); mTaskErrorLogDbController = TaskErrorLogDbController.getInstance(context); mEventBus = EventBus.getDefault(); } @Override public void indexLocalEntries(int _groupId) { List<ModelMapping> modelMappings = mTagModelMappingController.get(null, null); if (modelMappings.size() > 0) { return; } List<Tag> tagList = mTagController.listAll(); ModelMapping tagMapping; for (Tag tag : tagList) { tagMapping = new ModelMapping(null, _groupId, null, tag.mUUID, new Date(Constants.INITIAL_DATE), new Date(), false); mTagModelMappingController.insert(tagMapping); } } @Override public void indexLocal(int _groupId, Date _lastIndexTime) { String lastIndexTime = ISO8601Utils.format(_lastIndexTime, false, TimeZone.getTimeZone("GMT+0000"));//.concat("+0000"); boolean isLocal = false; GroupAuth groupAuth = mGroupAuthDbController.getLocalGroup(); if (groupAuth != null) { isLocal = groupAuth.getGroupId() == _groupId; } Cursor tagLogCursor = mClientLogDbController.getLogsSince(lastIndexTime, mModelType); if (tagLogCursor.getCount() == 0) { tagLogCursor.close(); return; } try { while (tagLogCursor.moveToNext()) { // fetch the action type int actionId = tagLogCursor.getInt(tagLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION)); eActionType actionType = eActionType.getTypeById(actionId); List<ModelMapping> modelMappingList = mTagModelMappingController.get( ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.CLIENT_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(_groupId), tagLogCursor.getString(tagLogCursor.getColumnIndex(LogInfo.COLUMN.ITEM_UUID)) }); ModelMapping modelMapping = modelMappingList.size() == 0 ? null : modelMappingList.get(0); switch (actionType) { case INSERT: // skip insertion because this should be decided by the user if the non local groups should have access to the category // and also skip if a mapping for this case already exists! if (!isLocal || modelMapping != null) { continue; } String clientUuid = tagLogCursor .getString(tagLogCursor.getColumnIndex(LogInfo.COLUMN.ITEM_UUID)); Date clientDate = ISO8601Utils.parse( tagLogCursor.getString(tagLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)), new ParsePosition(0)); modelMapping = new ModelMapping(null, groupAuth.getGroupId(), null, clientUuid, new Date(Constants.INITIAL_DATE), clientDate, false); mTagModelMappingController.insert(modelMapping); break; case UPDATE: if (modelMapping == null) { Log.i(TAG, "indexLocal: the model is null but shouldn't be"); continue; } String timeString = tagLogCursor .getString(tagLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)); clientDate = ISO8601Utils.parse(timeString, new ParsePosition(0)); modelMapping.setLastClientChange(clientDate); mTagModelMappingController.update(modelMapping); break; case DELETE: if (modelMapping == null) { Log.i(TAG, "indexLocal: the model is null but shouldn't be"); continue; } modelMapping.setDeleted(true); timeString = tagLogCursor.getString(tagLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)); clientDate = ISO8601Utils.parse(timeString, new ParsePosition(0)); modelMapping.setLastClientChange(clientDate); mTagModelMappingController.update(modelMapping); break; default: } } } catch (Exception e) { tagLogCursor.close(); } } @Override public void addGroupToMapping(int _groupId, String _clientUuid) { Date lastUpdate = mClientLogDbController.getLeastRecentUpdateTimeForUuid(_clientUuid); if (lastUpdate == null) { return; } ModelMapping modelMapping = new ModelMapping(null, _groupId, null, _clientUuid, new Date(Constants.INITIAL_DATE), lastUpdate, false); mTagModelMappingController.insert(modelMapping); } @Override public void removeGroupFromMapping(int _groupId, String _clientUuid) { List<ModelMapping> modelMappingList = mTagModelMappingController.get( ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.CLIENT_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(_groupId), _clientUuid }); if (modelMappingList.size() == 0) { return; } mTagModelMappingController.delete(modelMappingList.get(0)); } @Override public void synchLocalToNetwork(int _groupId, Date _lastUpdate) { String lastUpdateString = ISO8601Utils.format(_lastUpdate, false, TimeZone.getTimeZone("GMT+0000")); String authToken = mSessionController.getToken(_groupId); if (authToken == null) { // todo do some caching of this action return; } List<ModelMapping> tagModelMappingList = mTagModelMappingController .get(ModelMapping.COLUMN.LAST_CLIENT_CHANGE + " >= ? ", new String[] { lastUpdateString }); for (ModelMapping tagMapping : tagModelMappingList) { if (tagMapping.getClientSideUUID() == null) continue; if (tagMapping.isDeleted()) { // delete the item mTagNetworkController.deleteItem(new DeleteResponse(tagMapping, tagMapping.getServerSideUUID()), _groupId, tagMapping.getServerSideUUID(), authToken); } else if (tagMapping.getServerSideUUID() == null) { // insert new TagInfo tagInfo = new TagInfo(); Tag tag = mTagController.findById(tagMapping.getClientSideUUID()); if (tag == null) { continue; } String uuid = mTagModelMappingController.generateUuid(); tagInfo.setUUID(uuid); tagInfo.setName(tag.mName); Date lastChanged = new Date(tagMapping.getLastClientChange().getTime() - Constants.NETWORK_OFFSET); tagInfo.setLastChanged(lastChanged); tagInfo.setDeleted(false); mTagNetworkController.createItem(new InsertResponse(tagMapping, uuid), _groupId, tagInfo, authToken); } else { // update existing TagInfo tagInfo = new TagInfo(); Tag tag = mTagController.findById(tagMapping.getClientSideUUID()); if (tag == null) { // probably the category was deleted // delete the item mTagNetworkController.deleteItem(new DeleteResponse(tagMapping, tagMapping.getServerSideUUID()), _groupId, tagMapping.getServerSideUUID(), authToken); continue; } tagInfo.setUUID(tagMapping.getServerSideUUID()); tagInfo.setName(tag.mName); Date lastChanged = new Date(tagMapping.getLastClientChange().getTime() - Constants.NETWORK_OFFSET); tagInfo.setLastChanged(lastChanged); tagInfo.setDeleted(false); mTagNetworkController.updateItem(new UpdateResponse(tagMapping, tagMapping.getServerSideUUID()), _groupId, tagInfo.getUUID(), tagInfo, authToken); } } } @Override public void synchNetworkToLocal(int _groupId, Date _sinceTime) { String authToken = mSessionController.getToken(_groupId); if (authToken == null) { return; } mTagNetworkController.getList(new GetListResponse(_groupId, _sinceTime), _groupId, ISO8601Utils.format(_sinceTime, false, TimeZone.getTimeZone("GMT+0000")).concat("+0000"), authToken); } @Override public void resolveConflict(int _conflictId, int _resolveAction) { TaskErrorLog log = mTaskErrorLogDbController.findById(_conflictId); if (log == null) { return; } String authToken = mSessionController.getToken(log.getGroupId()); if (authToken == null) { return; } mTagNetworkController.getItem( new GetItemConflictResolveResponse(_resolveAction, _conflictId, log.getGroupId()), log.getGroupId(), log.getUUID(), authToken); } private class DeleteResponse implements IAuthorizedCallbackCompleted<Void> { private String mServerSideUuid; private ModelMapping mModelMapping; public DeleteResponse(ModelMapping _modelMapping, String _serverSideUuid) { mModelMapping = _modelMapping; mServerSideUuid = _serverSideUuid; } @Override public void onUnauthorized(int _groupId) { } @Override public void onCompleted(Void _next) { mTagModelMappingController.delete(mModelMapping); } @Override public void onError(Throwable _e) { } } private class InsertResponse implements IAuthorizedInsertCallbackCompleted<Void> { private String mServerSideUuid; private ModelMapping mModelMapping; public InsertResponse(ModelMapping _modelMapping, String _serverSideUuid) { mModelMapping = _modelMapping; mServerSideUuid = _serverSideUuid; } @Override public void onConflict() { // todo } @Override public void onUnauthorized(int _groupId) { } @Override public void onCompleted(Void _next) { mModelMapping.setLastServerChanged(new Date()); mModelMapping.setServerSideUUID(mServerSideUuid); mTagModelMappingController.update(mModelMapping); } @Override public void onError(Throwable _e) { } } private class UpdateResponse implements IAuthorizedCallbackCompleted<Void> { private String mServerSideUuid; private ModelMapping mModelMapping; public UpdateResponse(ModelMapping _modelMapping, String _serverSideUuid) { mModelMapping = _modelMapping; mServerSideUuid = _serverSideUuid; } @Override public void onUnauthorized(int _groupId) { } @Override public void onCompleted(Void _next) { mTagModelMappingController.update(mModelMapping); } @Override public void onError(Throwable _e) { } } private class GetListResponse implements IAuthorizedCallbackCompleted<List<TagInfo>> { private int mGroupId; private Date mLastUpdateDate; public GetListResponse(int _groupId, Date _lastUpdateDate) { mGroupId = _groupId; mLastUpdateDate = _lastUpdateDate; } @Override public void onUnauthorized(int _groupId) { EventBus.getDefault().post(new TagSynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } @Override public void onCompleted(List<TagInfo> _next) { for (TagInfo tagInfo : _next) { List<ModelMapping> modelMappingList = mTagModelMappingController.get(ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.SERVER_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(mGroupId), tagInfo.getUUID() }); if (modelMappingList.size() == 0) { // new entry Tag newTag = mTagController.createTag(tagInfo.getName()); if (newTag == null) { // TODO some error happenedd Log.e(TAG, "onCompleted: cannot create new tag with name " + tagInfo.getName()); continue; } ModelMapping modelMapping = new ModelMapping(null, mGroupId, tagInfo.getUUID(), newTag.mUUID, tagInfo.getLastChanged(), tagInfo.getLastChanged(), false); mTagModelMappingController.insert(modelMapping); } else { // entry exists local ModelMapping modelMapping = modelMappingList.get(0); Tag tag = mTagController.findById(modelMapping.getClientSideUUID()); if (tagInfo.getDeleted()) { // was deleted on server side mTagController.removeTag(tag); mTagModelMappingController.delete(modelMapping); continue; } // else there was an update! if (modelMapping.getLastClientChange().after(tagInfo.getLastChanged())) { // use server side or client side, let the user decide mTaskErrorLogDbController.insert(tagInfo.getUUID(), mModelType.ordinal(), ITask.ReturnCodes.MERGE_CONFLICT, mGroupId); continue; } Tag renamedTag = mTagController.renameTag(tag, tagInfo.getName()); modelMapping.setLastServerChanged(tagInfo.getLastChanged()); /* if (!renamedCategory.equals(category)) { // todo give it another name? continue; }*/ mTagModelMappingController.update(modelMapping); } } IGroupAuthAccessDbController groupAuthAccessDbController = LocalSqliteDbControllerFactory .getAuthAccessDbController(GlobalObjects.getInstance().getApplicationContext()); GroupAccess access = groupAuthAccessDbController.getGroupAuthAccess(mGroupId); access.setLastUpdateFromServer(new Date()); groupAuthAccessDbController.update(access); EventBus.getDefault().post(new TagSynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } @Override public void onError(Throwable _e) { EventBus.getDefault().post(new TagSynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } } private class GetItemConflictResolveResponse implements IAuthorizedCallbackCompleted<TagInfo> { private int mResolveAction; private int mCaseId; private int mGroupId; public GetItemConflictResolveResponse(int _resolveAction, int _caseId, int _groupId) { mResolveAction = _resolveAction; mCaseId = _caseId; mGroupId = _groupId; } @Override public void onUnauthorized(int _groupId) { } @Override public void onCompleted(TagInfo _next) { if (mResolveAction == ITask.ResolveCodes.RESOLVE_USE_CLIENT_SIDE) { // use client side // no further action needed? } else { // use server side List<ModelMapping> modelMappingList = mTagModelMappingController.get(ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.SERVER_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(mGroupId), _next.getUUID() }); if (modelMappingList.size() == 0) { return; } ModelMapping modelMapping = modelMappingList.get(0); Tag tag = mTagController.findById(modelMapping.getClientSideUUID()); Tag renamedTag = mTagController.renameTag(tag, _next.getName()); modelMapping.setLastServerChanged(_next.getLastChanged()); if (!renamedTag.equals(tag)) { // todo give it another name? return; } mTagModelMappingController.update(modelMapping); } mTaskErrorLogDbController.remove(mCaseId); } @Override public void onError(Throwable _e) { } } }