108 lines
3.5 KiB
Java
108 lines
3.5 KiB
Java
/**
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* Copyright (C) 2014 Open Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.thoughtcrime.securesms.jobmanager.persistence;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import org.thoughtcrime.securesms.jobmanager.EncryptionKeys;
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import org.thoughtcrime.securesms.jobmanager.Job;
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import org.thoughtcrime.securesms.logging.Log;
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import java.io.IOException;
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import java.util.LinkedList;
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import java.util.List;
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public class PersistentStorage {
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private static final int DATABASE_VERSION = 1;
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private static final String TABLE_NAME = "queue";
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private static final String ID = "_id";
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private static final String ITEM = "item";
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private static final String ENCRYPTED = "encrypted";
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private static final String DATABASE_CREATE = String.format("CREATE TABLE %s (%s INTEGER PRIMARY KEY, %s TEXT NOT NULL, %s INTEGER DEFAULT 0);",
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TABLE_NAME, ID, ITEM, ENCRYPTED);
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private final DatabaseHelper databaseHelper;
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private final JobSerializer jobSerializer;
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public PersistentStorage(Context context, String name, JobSerializer serializer) {
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this.databaseHelper = new DatabaseHelper(context, "_jobqueue-" + name);
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this.jobSerializer = serializer;
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}
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public List<Job> getAllUnencrypted() {
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return getJobs(null, ENCRYPTED + " = 0");
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}
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private List<Job> getJobs(EncryptionKeys keys, String where) {
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List<Job> results = new LinkedList<>();
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SQLiteDatabase database = databaseHelper.getReadableDatabase();
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Cursor cursor = null;
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try {
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cursor = database.query(TABLE_NAME, null, where, null, null, null, ID + " ASC", null);
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while (cursor.moveToNext()) {
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long id = cursor.getLong(cursor.getColumnIndexOrThrow(ID));
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String item = cursor.getString(cursor.getColumnIndexOrThrow(ITEM));
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boolean encrypted = cursor.getInt(cursor.getColumnIndexOrThrow(ENCRYPTED)) == 1;
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try{
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Job job = jobSerializer.deserialize(keys, encrypted, item);
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results.add(job);
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} catch (IOException e) {
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Log.w("PersistentStore", e);
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remove(id);
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}
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}
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} finally {
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if (cursor != null)
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cursor.close();
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}
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return results;
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}
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public void remove(long id) {
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databaseHelper.getWritableDatabase()
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.delete(TABLE_NAME, ID + " = ?", new String[] {String.valueOf(id)});
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}
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private static class DatabaseHelper extends SQLiteOpenHelper {
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public DatabaseHelper(Context context, String name) {
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super(context, name, null, DATABASE_VERSION);
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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db.execSQL(DATABASE_CREATE);
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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}
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}
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}
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