Java tutorial
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We also * recommend that a file or class name and description of purpose be included on * the same "printed page" as the copyright notice for easier identification within * third-party archives. * * Copyright [yyyy] [name of copyright owner] * * 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.normandra; import org.apache.cassandra.config.DatabaseDescriptor; import org.apache.cassandra.db.commitlog.CommitLog; import org.apache.cassandra.service.EmbeddedCassandraService; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import org.normandra.cache.NullEntityCache; import org.normandra.cassandra.CassandraDatabase; import org.normandra.meta.DatabaseMetaBuilder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.File; import java.io.IOException; import java.util.Arrays; import java.util.concurrent.atomic.AtomicBoolean; public class CassandraTestUtil { public static final String keyspace = "test"; public static final int port = 9142; public static final int cqlPort = 8042; public static final int thriftPort = 8160; private static EmbeddedCassandraService embedded = null; private static final Logger logger = LoggerFactory.getLogger(CassandraTestUtil.class); public static void start(final String yamlFile) throws Exception { if (embedded != null) { return; } log4j(false); final File embeddedDir = new File("target/embeddedCassandra").getCanonicalFile(); final File tmpYaml = new File(embeddedDir, FilenameUtils.getName(yamlFile)); if (tmpYaml.exists()) { FileUtils.forceDelete(tmpYaml); } if (embeddedDir.exists()) { FileUtils.deleteDirectory(embeddedDir); } FileUtils.copyURLToFile(CassandraTestUtil.class.getResource(yamlFile), tmpYaml); System.setProperty("cassandra.config", tmpYaml.getCanonicalFile().toURI().toString()); System.setProperty("cassandra-foreground", "true"); clearAndReset(); if (null == embedded) { final AtomicBoolean started = new AtomicBoolean(false); embedded = new EmbeddedCassandraService(); final Runnable worker = new Runnable() { @Override public void run() { try { embedded.start(); started.getAndSet(true); } catch (final Exception e) { logger.warn("Unable to start embedded cassandra server.", e); } } }; final Thread thread = new Thread(worker); thread.setDaemon(true); thread.setName(CassandraTestUtil.class.getSimpleName() + "[embedded]"); thread.start(); for (int i = 0; i < 60; i++) { if (started.get()) { break; } Thread.sleep(250); } } } public static void reset() throws IOException { dropKeyspaces(); // clearAndReset(); } private static void dropKeyspaces() { final CassandraDatabase db = CassandraDatabase.create("localhost", port, keyspace, NullEntityCache.getFactory(), DatabaseConstruction.RECREATE, new DatabaseMetaBuilder()); try { for (final String name : Arrays.asList("TestCluster", "Test Cluster")) { if (db.hasKeyspace(name)) { db.dropKeyspace(name); } } } catch (final Exception e) { logger.warn("Unable to drop keyspace.", e); } finally { db.close(); } } private static void clearAndReset() throws IOException { clear(); DatabaseDescriptor.createAllDirectories(); CommitLog.instance.resetUnsafe(true); } private static void clear() throws IOException { final String[] directoryNames = { DatabaseDescriptor.getCommitLogLocation(), }; for (final String dirName : directoryNames) { final File dir = new File(dirName).getCanonicalFile(); logger.info("Creating commit log at [" + dir + "]."); if (dir.exists()) { FileUtils.deleteDirectory(dir); } } for (final String dirName : DatabaseDescriptor.getAllDataFileLocations()) { final File dir = new File(dirName).getCanonicalFile(); logger.info("Creating data location at [" + dir + "]."); if (dir.exists()) { FileUtils.deleteDirectory(dir); } } } private static void log4j(final boolean resetAppenders) { /* if (resetAppenders) { final ConsoleAppender console = new ConsoleAppender(); //create appender final String PATTERN = "%d [%p|%c|%C{1}] %m%n"; console.setLayout(new PatternLayout(PATTERN)); console.setThreshold(org.apache.log4j.Level.WARN); console.activateOptions(); org.apache.log4j.Logger.getRootLogger().getLoggerRepository().resetConfiguration(); org.apache.log4j.Logger.getRootLogger().addAppender(console); } org.apache.log4j..getRootLogger().setLevel(org.apache.log4j.Level.WARN); org.apache.log4j.Logger.getLogger("org.apache.cassandra.db.Memtable").setLevel(org.apache.log4j.Level.OFF); java.util.logging.Logger.getGlobal().setLevel(java.util.logging.Level.WARNING); java.util.logging.Logger.getAnonymousLogger().setLevel(java.util.logging.Level.WARNING); java.util.logging.Logger.getLogger("org.apache.cassandra.db.Memtable").setLevel(java.util.logging.Level.OFF); */ } private CassandraTestUtil() { } }