package org.apache.bookkeeper.test;
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
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import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Random;
import java.util.Set;
import org.apache.bookkeeper.client.AddCallback;
import org.apache.bookkeeper.client.BKException;
import org.apache.bookkeeper.client.BookKeeper;
import org.apache.bookkeeper.client.LedgerHandle;
import org.apache.bookkeeper.client.LedgerSequence;
import org.apache.bookkeeper.client.ReadCallback;
import org.apache.bookkeeper.proto.BookieServer;
import org.apache.bookkeeper.util.ClientBase;
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.server.NIOServerCnxn;
import org.apache.zookeeper.server.ServerStats;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.apache.zookeeper.ZooDefs.Ids;
import org.junit.Test;
/**
* This test tests read and write, synchronous and
* asynchronous, strings and integers for a BookKeeper client.
* The test deployment uses a ZooKeeper server
* and three BookKeepers.
*
*/
public class BookieReadWriteTest
extends junit.framework.TestCase
implements AddCallback, ReadCallback{
//Depending on the taste, select the amount of logging
// by decommenting one of the two lines below
//static Logger LOG = Logger.getRootLogger();
static Logger LOG = Logger.getLogger(BookieClientTest.class);
static ConsoleAppender ca = new ConsoleAppender(new PatternLayout());
// ZooKeeper related variables
private static final String HOSTPORT = "127.0.0.1:2181";
static Integer ZooKeeperDefaultPort = 2181;
ZooKeeperServer zks;
ZooKeeper zkc; //zookeeper client
NIOServerCnxn.Factory serverFactory;
File ZkTmpDir;
//BookKeeper
File tmpDirB1, tmpDirB2, tmpDirB3;
BookieServer bs1, bs2, bs3;
Integer initialPort = 5000;
BookKeeper bkc; // bookkeeper client
byte[] ledgerPassword = "aaa".getBytes();
LedgerHandle lh;
long ledgerId;
LedgerSequence ls;
//test related variables
int numEntriesToWrite = 20;
int maxInt = 2147483647;
Random rng; // Random Number Generator
ArrayList<byte[]> entries; // generated entries
ArrayList<Integer> entriesSize;
// Synchronization
SyncObj sync;
Set<Object> syncObjs;
class SyncObj {
int counter;
boolean value;
public SyncObj() {
counter = 0;
value = false;
}
}
@Test
public void testReadWriteAsyncSingleClient() throws IOException{
try {
// Create a BookKeeper client and a ledger
bkc = new BookKeeper("127.0.0.1");
lh = bkc.createLedger(ledgerPassword);
bkc.initMessageDigest("SHA1");
ledgerId = lh.getId();
LOG.info("Ledger ID: " + lh.getId());
for(int i = 0; i < numEntriesToWrite; i++){
ByteBuffer entry = ByteBuffer.allocate(4);
entry.putInt(rng.nextInt(maxInt));
entry.position(0);
entries.add(entry.array());
entriesSize.add(entry.array().length);
bkc.asyncAddEntry(lh, entry.array(), this, sync);
}
// wait for all entries to be acknowledged
synchronized (sync) {
if (sync.counter < numEntriesToWrite){
LOG.debug("Entries counter = " + sync.counter);
sync.wait();
}
}
LOG.debug("*** WRITE COMPLETED ***");
// close ledger
bkc.closeLedger(lh);
//*** WRITING PART COMPLETED // READ PART BEGINS ***
// open ledger
lh = bkc.openLedger(ledgerId, ledgerPassword);
LOG.debug("Number of entries written: " + lh.getLast());
assertTrue("Verifying number of entries written", lh.getLast() == numEntriesToWrite);
//read entries
bkc.asyncReadEntries(lh, 0, numEntriesToWrite - 1, this, (Object) sync);
synchronized (sync) {
while(sync.value == false){
sync.wait();
}
}
assertTrue("Checking number of read entries", ls.size() == numEntriesToWrite);
LOG.debug("*** READ COMPLETED ***");
// at this point, LedgerSequence ls is filled with the returned values
int i = 0;
while(ls.hasMoreElements()){
ByteBuffer origbb = ByteBuffer.wrap(entries.get(i));
Integer origEntry = origbb.getInt();
byte[] entry = ls.nextElement().getEntry();
ByteBuffer result = ByteBuffer.wrap(entry);
LOG.debug("Length of result: " + result.capacity());
LOG.debug("Original entry: " + origEntry);
Integer retrEntry = result.getInt();
LOG.debug("Retrieved entry: " + retrEntry);
assertTrue("Checking entry " + i + " for equality", origEntry.equals(retrEntry));
assertTrue("Checking entry " + i + " for size", entry.length == entriesSize.get(i).intValue());
i++;
}
bkc.closeLedger(lh);
} catch (KeeperException e) {
e.printStackTrace();
} catch (BKException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
@Test
public void testSyncReadAsyncWriteStringsSingleClient() throws IOException{
LOG.info("TEST READ WRITE STRINGS MIXED SINGLE CLIENT");
String charset = "utf-8";
LOG.debug("Default charset: " + Charset.defaultCharset());
try {
// Create a BookKeeper client and a ledger
bkc = new BookKeeper("127.0.0.1");
lh = bkc.createLedger(ledgerPassword);
bkc.initMessageDigest("SHA1");
ledgerId = lh.getId();
LOG.info("Ledger ID: " + lh.getId());
for(int i = 0; i < numEntriesToWrite; i++){
int randomInt = rng.nextInt(maxInt);
byte[] entry = new String(Integer.toString(randomInt)).getBytes(charset);
entries.add(entry);
bkc.asyncAddEntry(lh, entry, this, sync);
}
// wait for all entries to be acknowledged
synchronized (sync) {
if (sync.counter < numEntriesToWrite){
LOG.debug("Entries counter = " + sync.counter);
sync.wait();
}
}
LOG.debug("*** ASYNC WRITE COMPLETED ***");
// close ledger
bkc.closeLedger(lh);
//*** WRITING PART COMPLETED // READ PART BEGINS ***
// open ledger
lh = bkc.openLedger(ledgerId, ledgerPassword);
LOG.debug("Number of entries written: " + lh.getLast());
assertTrue("Verifying number of entries written", lh.getLast() == numEntriesToWrite);
//read entries
ls = bkc.readEntries(lh, 0, numEntriesToWrite - 1);
assertTrue("Checking number of read entries", ls.size() == numEntriesToWrite);
LOG.debug("*** SYNC READ COMPLETED ***");
// at this point, LedgerSequence ls is filled with the returned values
int i = 0;
while(ls.hasMoreElements()){
byte[] origEntryBytes = entries.get(i++);
byte[] retrEntryBytes = ls.nextElement().getEntry();
LOG.debug("Original byte entry size: " + origEntryBytes.length);
LOG.debug("Saved byte entry size: " + retrEntryBytes.length);
String origEntry = new String(origEntryBytes, charset);
String retrEntry = new String(retrEntryBytes, charset);
LOG.debug("Original entry: " + origEntry);
LOG.debug("Retrieved entry: " + retrEntry);
assertTrue("Checking entry " + i + " for equality", origEntry.equals(retrEntry));
}
bkc.closeLedger(lh);
} catch (KeeperException e) {
e.printStackTrace();
} catch (BKException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
public void testReadWriteSyncSingleClient() throws IOException {
try {
// Create a BookKeeper client and a ledger
bkc = new BookKeeper("127.0.0.1");
lh = bkc.createLedger(ledgerPassword);
bkc.initMessageDigest("SHA1");
ledgerId = lh.getId();
LOG.info("Ledger ID: " + lh.getId());
for(int i = 0; i < numEntriesToWrite; i++){
ByteBuffer entry = ByteBuffer.allocate(4);
entry.putInt(rng.nextInt(maxInt));
entry.position(0);
entries.add(entry.array());
bkc.addEntry(lh, entry.array());
}
bkc.closeLedger(lh);
lh = bkc.openLedger(ledgerId, ledgerPassword);
LOG.debug("Number of entries written: " + lh.getLast());
assertTrue("Verifying number of entries written", lh.getLast() == numEntriesToWrite);
ls = bkc.readEntries(lh, 0, numEntriesToWrite - 1);
int i = 0;
while(ls.hasMoreElements()){
ByteBuffer origbb = ByteBuffer.wrap(entries.get(i++));
Integer origEntry = origbb.getInt();
ByteBuffer result = ByteBuffer.wrap(ls.nextElement().getEntry());
LOG.debug("Length of result: " + result.capacity());
LOG.debug("Original entry: " + origEntry);
Integer retrEntry = result.getInt();
LOG.debug("Retrieved entry: " + retrEntry);
assertTrue("Checking entry " + i + " for equality", origEntry.equals(retrEntry));
}
bkc.closeLedger(lh);
} catch (KeeperException e) {
e.printStackTrace();
} catch (BKException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
public void testReadWriteZero() throws IOException {
try {
// Create a BookKeeper client and a ledger
bkc = new BookKeeper("127.0.0.1");
lh = bkc.createLedger(ledgerPassword);
bkc.initMessageDigest("SHA1");
ledgerId = lh.getId();
LOG.info("Ledger ID: " + lh.getId());
for(int i = 0; i < numEntriesToWrite; i++){
bkc.addEntry(lh, new byte[0]);
}
/*
* Write a non-zero entry
*/
ByteBuffer entry = ByteBuffer.allocate(4);
entry.putInt(rng.nextInt(maxInt));
entry.position(0);
entries.add(entry.array());
bkc.addEntry(lh, entry.array());
bkc.closeLedger(lh);
lh = bkc.openLedger(ledgerId, ledgerPassword);
LOG.debug("Number of entries written: " + lh.getLast());
assertTrue("Verifying number of entries written", lh.getLast() == (numEntriesToWrite + 1));
ls = bkc.readEntries(lh, 0, numEntriesToWrite - 1);
int i = 0;
while(ls.hasMoreElements()){
ByteBuffer result = ByteBuffer.wrap(ls.nextElement().getEntry());
LOG.debug("Length of result: " + result.capacity());
assertTrue("Checking if entry " + i + " has zero bytes", result.capacity() == 0);
}
bkc.closeLedger(lh);
} catch (KeeperException e) {
e.printStackTrace();
} catch (BKException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
public void addComplete(int rc, long ledgerId, long entryId, Object ctx) {
SyncObj x = (SyncObj) ctx;
synchronized (x) {
x.counter++;
x.notify();
}
}
public void readComplete(int rc, long ledgerId, LedgerSequence seq,
Object ctx) {
ls = seq;
synchronized (sync) {
sync.value = true;
sync.notify();
}
}
protected void setUp() throws IOException {
LOG.addAppender(ca);
LOG.setLevel((Level) Level.DEBUG);
// create a ZooKeeper server(dataDir, dataLogDir, port)
LOG.debug("Running ZK server");
//ServerStats.registerAsConcrete();
ClientBase.setupTestEnv();
ZkTmpDir = File.createTempFile("zookeeper", "test");
ZkTmpDir.delete();
ZkTmpDir.mkdir();
try {
zks = new ZooKeeperServer(ZkTmpDir, ZkTmpDir, ZooKeeperDefaultPort);
serverFactory = new NIOServerCnxn.Factory(ZooKeeperDefaultPort);
serverFactory.startup(zks);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
boolean b = ClientBase.waitForServerUp(HOSTPORT, ClientBase.CONNECTION_TIMEOUT);
LOG.debug("Server up: " + b);
// create a zookeeper client
LOG.debug("Instantiate ZK Client");
zkc = new ZooKeeper("127.0.0.1", ZooKeeperDefaultPort, new emptyWatcher());
//initialize the zk client with values
try {
zkc.create("/ledgers", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.create("/ledgers/available", new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.create("/ledgers/available/127.0.0.1:" + Integer.toString(initialPort), new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.create("/ledgers/available/127.0.0.1:" + Integer.toString(initialPort + 1), new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zkc.create("/ledgers/available/127.0.0.1:" + Integer.toString(initialPort + 2), new byte[0], Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
} catch (KeeperException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// Create Bookie Servers (B1, B2, B3)
tmpDirB1 = File.createTempFile("bookie1", "test");
tmpDirB1.delete();
tmpDirB1.mkdir();
bs1 = new BookieServer(initialPort, tmpDirB1, new File[]{tmpDirB1});
bs1.start();
tmpDirB2 = File.createTempFile("bookie2", "test");
tmpDirB2.delete();
tmpDirB2.mkdir();
bs2 = new BookieServer(initialPort + 1, tmpDirB2, new File[]{tmpDirB2});
bs2.start();
tmpDirB3 = File.createTempFile("bookie3", "test");
tmpDirB3.delete();
tmpDirB3.mkdir();
bs3 = new BookieServer(initialPort + 2, tmpDirB3, new File[]{tmpDirB3});
bs3.start();
rng = new Random(System.currentTimeMillis()); // Initialize the Random Number Generator
entries = new ArrayList<byte[]>(); // initialize the entries list
entriesSize = new ArrayList<Integer>();
sync = new SyncObj(); // initialize the synchronization data structure
}
protected void tearDown(){
LOG.debug("TearDown");
//shutdown bookie servers
try {
bs1.shutdown();
bs2.shutdown();
bs3.shutdown();
} catch (InterruptedException e) {
e.printStackTrace();
}
cleanUpDir(tmpDirB1);
cleanUpDir(tmpDirB2);
cleanUpDir(tmpDirB3);
//shutdown ZK server
serverFactory.shutdown();
assertTrue("waiting for server down",
ClientBase.waitForServerDown(HOSTPORT,
ClientBase.CONNECTION_TIMEOUT));
//ServerStats.unregister();
cleanUpDir(ZkTmpDir);
}
/* Clean up a directory recursively */
protected boolean cleanUpDir(File dir){
if (dir.isDirectory()) {
System.err.println("Cleaning up " + dir.getName());
String[] children = dir.list();
for (String string : children) {
boolean success = cleanUpDir(new File(dir, string));
if (!success) return false;
}
}
// The directory is now empty so delete it
return dir.delete();
}
/* User for testing purposes, void */
class emptyWatcher implements Watcher{
public void process(WatchedEvent event) {}
}
}