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.CategoryInfo; import org.noorganization.instalist.enums.eActionType; import org.noorganization.instalist.enums.eModelType; import org.noorganization.instalist.model.Category; import org.noorganization.instalist.model.LogInfo; import org.noorganization.instalist.presenter.ICategoryController; 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.CategorySynchFromNetworkFinished; 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 categories. * Created by Desnoo on 24.02.2016. */ public class CategorySynch implements ISynch { private static final String TAG = "CategorySynch"; private ISessionController mSessionController; private ICategoryController mCategoryController; private IModelMappingDbController mCategoryModelMappingController; private IClientLogDbController mClientLogDbController; private IGroupAuthDbController mGroupAuthDbController; private INetworkController<CategoryInfo> mCategoryInfoNetworkController; private ITaskErrorLogDbController mTaskErrorLogDbController; private eModelType mModelType; private EventBus mEventBus; public CategorySynch(eModelType _type) { mModelType = _type; Context context = GlobalObjects.getInstance().getApplicationContext(); mSessionController = InMemorySessionController.getInstance(); mCategoryController = ControllerFactory.getCategoryController(context); mCategoryModelMappingController = ModelMappingDbFactory.getInstance() .getSqliteCategoryMappingDbController(); mClientLogDbController = LocalSqliteDbControllerFactory.getClientLogController(context); mGroupAuthDbController = LocalSqliteDbControllerFactory.getGroupAuthDbController(context); mCategoryInfoNetworkController = RemoteModelAccessControllerFactory.getInstance() .getCategoryNetworkController(); mTaskErrorLogDbController = TaskErrorLogDbController.getInstance(context); mEventBus = EventBus.getDefault(); } public CategorySynch(eModelType _type, IModelMappingDbController _modelMappingDbController) { mModelType = _type; Context context = GlobalObjects.getInstance().getApplicationContext(); mSessionController = InMemorySessionController.getInstance(); mCategoryController = ControllerFactory.getCategoryController(context); mCategoryModelMappingController = ModelMappingDbFactory.getInstance() .getSqliteCategoryMappingDbController(); mClientLogDbController = LocalSqliteDbControllerFactory.getClientLogController(context); mGroupAuthDbController = LocalSqliteDbControllerFactory.getGroupAuthDbController(context); mCategoryInfoNetworkController = RemoteModelAccessControllerFactory.getInstance() .getCategoryNetworkController(); mTaskErrorLogDbController = TaskErrorLogDbController.getInstance(context); } @Override public void indexLocalEntries(int _groupId) { List<ModelMapping> modelMappings = mCategoryModelMappingController.get(null, null); if (modelMappings.size() > 0) { return; } List<Category> categoryList = mCategoryController.getAllCategories(); ModelMapping categoryMapping; for (Category category : categoryList) { categoryMapping = new ModelMapping(null, _groupId, null, category.mUUID, new Date(Constants.INITIAL_DATE), new Date(), false); mCategoryModelMappingController.insert(categoryMapping); } } @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 categoryLogCursor = mClientLogDbController.getLogsSince(lastIndexTime, mModelType); if (categoryLogCursor.getCount() == 0) { categoryLogCursor.close(); return; } try { while (categoryLogCursor.moveToNext()) { // fetch the action type int actionId = categoryLogCursor.getInt(categoryLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION)); eActionType actionType = eActionType.getTypeById(actionId); List<ModelMapping> modelMappingList = mCategoryModelMappingController.get( ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.CLIENT_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(_groupId), categoryLogCursor .getString(categoryLogCursor.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 = categoryLogCursor .getString(categoryLogCursor.getColumnIndex(LogInfo.COLUMN.ITEM_UUID)); Date clientDate = ISO8601Utils.parse( categoryLogCursor .getString(categoryLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)), new ParsePosition(0)); modelMapping = new ModelMapping(null, groupAuth.getGroupId(), null, clientUuid, new Date(Constants.INITIAL_DATE), clientDate, false); mCategoryModelMappingController.insert(modelMapping); break; case UPDATE: if (modelMapping == null) { Log.i(TAG, "indexLocal: the model is null but shouldn't be"); continue; } String timeString = categoryLogCursor .getString(categoryLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)); clientDate = ISO8601Utils.parse(timeString, new ParsePosition(0)); modelMapping.setLastClientChange(clientDate); mCategoryModelMappingController.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 = categoryLogCursor .getString(categoryLogCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)); clientDate = ISO8601Utils.parse(timeString, new ParsePosition(0)); modelMapping.setLastClientChange(clientDate); mCategoryModelMappingController.update(modelMapping); break; default: } } } catch (Exception e) { categoryLogCursor.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); mCategoryModelMappingController.insert(modelMapping); } @Override public void removeGroupFromMapping(int _groupId, String _clientUuid) { List<ModelMapping> modelMappingList = mCategoryModelMappingController.get( ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.CLIENT_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(_groupId), _clientUuid }); if (modelMappingList.size() == 0) { return; } mCategoryModelMappingController.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> categoryMappingList = mCategoryModelMappingController .get(ModelMapping.COLUMN.LAST_CLIENT_CHANGE + " >= ? ", new String[] { lastUpdateString }); for (ModelMapping categoryMapping : categoryMappingList) { if (categoryMapping.isDeleted()) { // delete the item mCategoryInfoNetworkController.deleteItem( new DeleteResponse(categoryMapping, categoryMapping.getServerSideUUID()), _groupId, categoryMapping.getServerSideUUID(), authToken); } else if (categoryMapping.getServerSideUUID() == null) { // insert new CategoryInfo categoryInfo = new CategoryInfo(); Category category = mCategoryController.getCategoryByID(categoryMapping.getClientSideUUID()); if (category == null) { continue; } String uuid = mCategoryModelMappingController.generateUuid(); categoryInfo.setUUID(uuid); categoryInfo.setName(category.mName); Date lastChanged = new Date( categoryMapping.getLastClientChange().getTime() - Constants.NETWORK_OFFSET); categoryInfo.setLastChanged(lastChanged); categoryInfo.setDeleted(false); mCategoryInfoNetworkController.createItem(new InsertResponse(categoryMapping, uuid), _groupId, categoryInfo, authToken); } else { // update existing CategoryInfo categoryInfo = new CategoryInfo(); Category category = mCategoryController.getCategoryByID(categoryMapping.getClientSideUUID()); if (category == null) { // probably the category was deleted // delete the item mCategoryInfoNetworkController.deleteItem( new DeleteResponse(categoryMapping, categoryMapping.getServerSideUUID()), _groupId, categoryMapping.getServerSideUUID(), authToken); continue; } categoryInfo.setUUID(categoryMapping.getServerSideUUID()); categoryInfo.setName(category.mName); Date lastChanged = new Date( categoryMapping.getLastClientChange().getTime() - Constants.NETWORK_OFFSET); categoryInfo.setLastChanged(lastChanged); categoryInfo.setDeleted(false); mCategoryInfoNetworkController.updateItem( new UpdateResponse(categoryMapping, categoryMapping.getServerSideUUID()), _groupId, categoryInfo.getUUID(), categoryInfo, authToken); } } } @Override public void synchNetworkToLocal(int _groupId, Date _sinceTime) { String authToken = mSessionController.getToken(_groupId); if (authToken == null) { return; } mCategoryInfoNetworkController.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; } mCategoryInfoNetworkController.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) { mCategoryModelMappingController.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); mCategoryModelMappingController.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) { mCategoryModelMappingController.update(mModelMapping); } @Override public void onError(Throwable _e) { } } private class GetListResponse implements IAuthorizedCallbackCompleted<List<CategoryInfo>> { 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 CategorySynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } @Override public void onCompleted(List<CategoryInfo> _next) { for (CategoryInfo categoryInfo : _next) { List<ModelMapping> modelMappingList = mCategoryModelMappingController .get(ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.SERVER_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(mGroupId), categoryInfo.getUUID() }); if (modelMappingList.size() == 0) { // new entry Category newCategory = mCategoryController.createCategory(categoryInfo.getName()); if (newCategory == null) { // TODO some error happened continue; } ModelMapping modelMapping = new ModelMapping(null, mGroupId, categoryInfo.getUUID(), newCategory.mUUID, categoryInfo.getLastChanged(), categoryInfo.getLastChanged(), false); mCategoryModelMappingController.insert(modelMapping); } else { // entry exists local ModelMapping modelMapping = modelMappingList.get(0); Category category = mCategoryController.getCategoryByID(modelMapping.getClientSideUUID()); if (categoryInfo.getDeleted()) { // was deleted on server side mCategoryController.removeCategory(category); mCategoryModelMappingController.delete(modelMapping); continue; } // else there was an update! if (modelMapping.getLastClientChange().after(categoryInfo.getLastChanged())) { // use server side or client side, let the user decide mTaskErrorLogDbController.insert(categoryInfo.getUUID(), mModelType.ordinal(), ITask.ReturnCodes.MERGE_CONFLICT, mGroupId); continue; } Category renamedCategory = mCategoryController.renameCategory(category, categoryInfo.getName()); modelMapping.setLastServerChanged(categoryInfo.getLastChanged()); /* if (!renamedCategory.equals(category)) { // todo give it another name? continue; }*/ mCategoryModelMappingController.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 CategorySynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } @Override public void onError(Throwable _e) { EventBus.getDefault().post(new CategorySynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } } private class GetItemConflictResolveResponse implements IAuthorizedCallbackCompleted<CategoryInfo> { 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(CategoryInfo _next) { if (mResolveAction == ITask.ResolveCodes.RESOLVE_USE_CLIENT_SIDE) { // use client side // no further action needed? } else { // use server side List<ModelMapping> modelMappingList = mCategoryModelMappingController .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); Category category = mCategoryController.getCategoryByID(modelMapping.getClientSideUUID()); Category renamedCategory = mCategoryController.renameCategory(category, _next.getName()); modelMapping.setLastServerChanged(_next.getLastChanged()); if (!renamedCategory.equals(category)) { // todo give it another name? return; } mCategoryModelMappingController.update(modelMapping); } mTaskErrorLogDbController.remove(mCaseId); } @Override public void onError(Throwable _e) { } } }