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.RecipeInfo; import org.noorganization.instalist.enums.eActionType; import org.noorganization.instalist.enums.eModelType; import org.noorganization.instalist.model.LogInfo; import org.noorganization.instalist.model.Recipe; import org.noorganization.instalist.presenter.IRecipeController; 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.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.RecipeSynchFromNetworkFinished; 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; /** * Created by Desnoo on 27.02.2016. */ public class RecipeSynch implements ISynch { private static final String TAG = "RecipeSynch"; private ISessionController mSessionController; private IRecipeController mRecipeController; private IModelMappingDbController mRecipeMappingController; //private IModelMappingDbController mCategoryModelMappingController; private IClientLogDbController mClientLogDbController; private IGroupAuthDbController mGroupAuthDbController; private INetworkController<RecipeInfo> mRecipeInfoNetworkController; private ITaskErrorLogDbController mTaskErrorLogDbController; private eModelType mModelType; private EventBus mEventBus; public RecipeSynch(eModelType _type) { mModelType = _type; Context context = GlobalObjects.getInstance().getApplicationContext(); mSessionController = InMemorySessionController.getInstance(); mRecipeController = ControllerFactory.getRecipeController(context); mRecipeMappingController = ModelMappingDbFactory.getInstance().getSqliteRecipeMappingController(); mClientLogDbController = LocalSqliteDbControllerFactory.getClientLogController(context); mGroupAuthDbController = LocalSqliteDbControllerFactory.getGroupAuthDbController(context); mRecipeInfoNetworkController = RemoteModelAccessControllerFactory.getInstance() .getRecipeNetworkController(); mTaskErrorLogDbController = TaskErrorLogDbController.getInstance(context); mEventBus = EventBus.getDefault(); } @Override public void indexLocalEntries(int _groupId) { List<ModelMapping> modelMappings = mRecipeMappingController.get(null, null); if (modelMappings.size() > 0) { return; } List<Recipe> recipeList = mRecipeController.listAll(); ModelMapping modelMapping; for (Recipe recipe : recipeList) { modelMapping = new ModelMapping(null, _groupId, null, recipe.mUUID, new Date(Constants.INITIAL_DATE), new Date(), false); mRecipeMappingController.insert(modelMapping); } } @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 logCursor = mClientLogDbController.getLogsSince(lastIndexTime, mModelType); if (logCursor.getCount() == 0) { logCursor.close(); return; } try { while (logCursor.moveToNext()) { // fetch the action type int actionId = logCursor.getInt(logCursor.getColumnIndex(LogInfo.COLUMN.ACTION)); eActionType actionType = eActionType.getTypeById(actionId); List<ModelMapping> modelMappingList = mRecipeMappingController.get( ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.CLIENT_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(_groupId), logCursor.getString(logCursor.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 = logCursor.getString(logCursor.getColumnIndex(LogInfo.COLUMN.ITEM_UUID)); Date clientDate = ISO8601Utils.parse( logCursor.getString(logCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)), new ParsePosition(0)); modelMapping = new ModelMapping(null, groupAuth.getGroupId(), null, clientUuid, new Date(Constants.INITIAL_DATE), clientDate, false); mRecipeMappingController.insert(modelMapping); break; case UPDATE: if (modelMapping == null) { Log.i(TAG, "indexLocal: the model is null but shouldn't be"); continue; } String timeString = logCursor.getString(logCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)); clientDate = ISO8601Utils.parse(timeString, new ParsePosition(0)); modelMapping.setLastClientChange(clientDate); mRecipeMappingController.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 = logCursor.getString(logCursor.getColumnIndex(LogInfo.COLUMN.ACTION_DATE)); clientDate = ISO8601Utils.parse(timeString, new ParsePosition(0)); modelMapping.setLastClientChange(clientDate); mRecipeMappingController.update(modelMapping); break; default: } } } catch (Exception e) { logCursor.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); mRecipeMappingController.insert(modelMapping); } @Override public void removeGroupFromMapping(int _groupId, String _clientUuid) { List<ModelMapping> modelMappingList = mRecipeMappingController.get( ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.CLIENT_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(_groupId), _clientUuid }); if (modelMappingList.size() == 0) { return; } mRecipeMappingController.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> modelMappingList = mRecipeMappingController .get(ModelMapping.COLUMN.LAST_CLIENT_CHANGE + " >= ? ", new String[] { lastUpdateString }); for (ModelMapping modelMapping : modelMappingList) { if (modelMapping.isDeleted()) { // delete the item mRecipeInfoNetworkController.deleteItem( new DeleteResponse(modelMapping, modelMapping.getServerSideUUID()), _groupId, modelMapping.getServerSideUUID(), authToken); } else if (modelMapping.getServerSideUUID() == null) { // insert new RecipeInfo recipeInfo = new RecipeInfo(); Recipe recipe = mRecipeController.findById(modelMapping.getClientSideUUID()); if (recipe == null) { continue; } String uuid = mRecipeMappingController.generateUuid(); recipeInfo.setUUID(uuid); recipeInfo.setName(recipe.mName); Date lastChanged = new Date( modelMapping.getLastClientChange().getTime() - Constants.NETWORK_OFFSET); recipeInfo.setLastChanged(lastChanged); recipeInfo.setDeleted(false); mRecipeInfoNetworkController.createItem(new InsertResponse(modelMapping, uuid), _groupId, recipeInfo, authToken); } else { // update existing RecipeInfo recipeInfo = new RecipeInfo(); Recipe recipe = mRecipeController.findById(modelMapping.getClientSideUUID()); if (recipe == null) { // probably the item was deleted mRecipeInfoNetworkController.deleteItem( new DeleteResponse(modelMapping, modelMapping.getServerSideUUID()), _groupId, modelMapping.getServerSideUUID(), authToken); continue; } recipeInfo.setUUID(modelMapping.getServerSideUUID()); recipeInfo.setName(recipe.mName); Date lastChanged = new Date( modelMapping.getLastClientChange().getTime() - Constants.NETWORK_OFFSET); recipeInfo.setLastChanged(lastChanged); recipeInfo.setDeleted(false); mRecipeInfoNetworkController.updateItem( new UpdateResponse(modelMapping, modelMapping.getServerSideUUID()), _groupId, recipeInfo.getUUID(), recipeInfo, authToken); } } } @Override public void synchNetworkToLocal(int _groupId, Date _sinceTime) { String authToken = mSessionController.getToken(_groupId); if (authToken == null) { return; } mRecipeInfoNetworkController.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; } mRecipeInfoNetworkController.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) { mRecipeMappingController.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); mRecipeMappingController.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) { mRecipeMappingController.update(mModelMapping); } @Override public void onError(Throwable _e) { } } private class GetListResponse implements IAuthorizedCallbackCompleted<List<RecipeInfo>> { 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 RecipeSynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } @Override public void onCompleted(List<RecipeInfo> _next) { for (RecipeInfo recipeInfo : _next) { List<ModelMapping> modelMappingList = mRecipeMappingController.get(ModelMapping.COLUMN.GROUP_ID + " = ? AND " + ModelMapping.COLUMN.SERVER_SIDE_UUID + " LIKE ?", new String[] { String.valueOf(mGroupId), recipeInfo.getUUID() }); if (modelMappingList.size() == 0) { // new entry Recipe newRecipe = mRecipeController.createRecipe(recipeInfo.getName()); if (newRecipe == null) { // TODO some error happened continue; } ModelMapping modelMapping = new ModelMapping(null, mGroupId, recipeInfo.getUUID(), newRecipe.mUUID, recipeInfo.getLastChanged(), recipeInfo.getLastChanged(), false); mRecipeMappingController.insert(modelMapping); } else { // entry exists local ModelMapping modelMapping = modelMappingList.get(0); Recipe recipe = mRecipeController.findById(modelMapping.getClientSideUUID()); if (recipeInfo.getDeleted()) { // was deleted on server side mRecipeController.removeRecipe(recipe); mRecipeMappingController.delete(modelMapping); continue; } // else there was an update! if (modelMapping.getLastClientChange().after(recipeInfo.getLastChanged())) { // use server side or client side, let the user decide mTaskErrorLogDbController.insert(recipeInfo.getUUID(), mModelType.ordinal(), ITask.ReturnCodes.MERGE_CONFLICT, mGroupId); continue; } Recipe renamedRecipe = mRecipeController.renameRecipe(recipe, recipeInfo.getName()); modelMapping.setLastServerChanged(recipeInfo.getLastChanged()); mRecipeMappingController.update(modelMapping); } } EventBus.getDefault().post(new RecipeSynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } @Override public void onError(Throwable _e) { EventBus.getDefault().post(new RecipeSynchFromNetworkFinished(mLastUpdateDate, mGroupId)); } } private class GetItemConflictResolveResponse implements IAuthorizedCallbackCompleted<RecipeInfo> { 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(RecipeInfo _next) { if (mResolveAction == ITask.ResolveCodes.RESOLVE_USE_CLIENT_SIDE) { // use client side // no further action needed? } else { // use server side List<ModelMapping> modelMappingList = mRecipeMappingController.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); Recipe recipe = mRecipeController.findById(modelMapping.getClientSideUUID()); Recipe renamedRecipe = mRecipeController.renameRecipe(recipe, _next.getName()); modelMapping.setLastServerChanged(_next.getLastChanged()); mRecipeMappingController.update(modelMapping); } mTaskErrorLogDbController.remove(mCaseId); } @Override public void onError(Throwable _e) { } } }