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Posted to user@bookkeeper.apache.org by Flavio Junqueira <fp...@yahoo-inc.com> on 2011/09/06 10:34:35 UTC
Re: help with bookkeeper code?
Hi Yang, Please use the bookkeeper-user@zookeeper list for questions
about BK.
"BookieClient" is possibly a misleading name for what that class does.
It is supposed to be internal to the bookkeeper client library and
used for the communication of the client with the bookies. The
interface you're supposed to use is available in the BookKeeper and in
the LedgerHandle classes. With a BookKeeper object, one can create,
open, and delete ledgers. Upon creating or opening a ledger, the call
returns a ledger handle, which you use to add to the ledger or read
from the ledger, depending on the state of the ledger.
You'll also find the documentation of the API here:
http://zookeeper.apache.org/bookkeeper/docs/trunk/bookkeeperProgrammer.html
-Flavio
On Sep 6, 2011, at 7:02 AM, Yang wrote:
> I was trying to learn how to use BookKeeper, so I started from the
> test code
> BookieClientTest.java, and stripped it down to the
> most basic form (code pasted below),
>
> now I just have the readEntry callback print out onto screen, but it
> doesn't
> seem to be executed. there is not much doc available,
> where am I doing wrong?
>
> I setup my separate bookie server as instructed by the README.txt , by
> java -cp
> $MYLIB:\$\{dist.dir\}/contrib/bookeper/zookeeper-dev-bookkeeper.jar:/
> home/yyang/work/zookeeper/zookeeper-3.3.3/zookeeper-3.3.3.jar
> org.apache.bookkeeper.util.LocalBookKeeper 1
>
>
> Thanks a lot
> Yang
>
>
> ///////////////////////////////////////
> 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.
> *
> */
>
> import java.io.File;
> import java.net.InetSocketAddress;
> import java.nio.ByteBuffer;
> import java.util.Arrays;
> import java.util.concurrent.Executors;
>
> import org.jboss.netty.buffer.ChannelBuffer;
> import org.jboss.netty.buffer.ChannelBuffers;
> import org.jboss.netty.channel.socket.ClientSocketChannelFactory;
> import
> org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
> import org.junit.Test;
> import org.apache.bookkeeper.client.BKException;
> import org.apache.bookkeeper.proto.BookieClient;
> import org.apache.bookkeeper.proto.BookieServer;
> import
> org
> .apache
> .bookkeeper.proto.BookkeeperInternalCallbacks.ReadEntryCallback;
> import
> org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.WriteCallback;
> import org.apache.bookkeeper.util.OrderedSafeExecutor;
> import org.apache.log4j.Logger;
>
> import junit.framework.TestCase;
>
> public class SimpleClientTest extends TestCase {
> static Logger LOG = Logger.getLogger(SimpleClientTest.class);
> BookieServer bs;
> File tmpDir;
> int port = 5000;
> ClientSocketChannelFactory channelFactory;
> OrderedSafeExecutor executor;
>
> @Override
> protected void setUp() throws Exception {
>
> channelFactory = new
> NioClientSocketChannelFactory(Executors.newCachedThreadPool(),
> Executors
> .newCachedThreadPool());
> executor = new OrderedSafeExecutor(2);
> }
>
>
> ReadEntryCallback recb = new ReadEntryCallback() {
>
> public void readEntryComplete(int rc, long ledgerId, long
> entryId,
> ChannelBuffer bb, Object ctx) {
> System.out.println("read something" + ledgerId + " " +
> entryId +
> " " + bb);
> }
>
> };
>
> WriteCallback wrcb = new WriteCallback() {
> public void writeComplete(int rc, long ledgerId, long entryId,
> InetSocketAddress addr, Object ctx) {
> if (ctx != null) {
> synchronized (ctx) {
> ctx.notifyAll();
> }
> }
> }
> };
>
> @Test
> public void testWriteGaps() throws Exception {
> byte[] passwd = new byte[20];
> Arrays.fill(passwd, (byte) 'a');
> InetSocketAddress addr = new InetSocketAddress("127.0.0.1",
> port);
>
> BookieClient bc = new BookieClient(channelFactory, executor);
> ChannelBuffer bb;
> bb = createByteBuffer(1, 1, 1);
> bc.addEntry(addr, 1, passwd, 1, bb, wrcb, null);
> bc.readEntry(addr, 1, 1, recb, null);
>
> }
>
> private ChannelBuffer createByteBuffer(int i, long lid, long eid) {
> ByteBuffer bb;
> bb = ByteBuffer.allocate(4 + 16);
> bb.putLong(lid);
> bb.putLong(eid);
> bb.putInt(i);
> bb.flip();
> return ChannelBuffers.wrappedBuffer(bb);
> }
> }
flavio
junqueira
research scientist
fpj@yahoo-inc.com
direct +34 93-183-8828
avinguda diagonal 177, 8th floor, barcelona, 08018, es
phone (408) 349 3300 fax (408) 349 3301
Re: help with bookkeeper code?
Posted by Yang <te...@gmail.com>.
Thanks Flavio.
(I need to fix my gmail filters, this email didn't show up on my "new mails"
list :) )
On Tue, Sep 6, 2011 at 1:34 AM, Flavio Junqueira <fp...@yahoo-inc.com> wrote:
> Hi Yang, Please use the bookkeeper-user@zookeeper list for questions about
> BK.
>
> "BookieClient" is possibly a misleading name for what that class does. It
> is supposed to be internal to the bookkeeper client library and used for the
> communication of the client with the bookies. The interface you're supposed
> to use is available in the BookKeeper and in the LedgerHandle classes. With
> a BookKeeper object, one can create, open, and delete ledgers. Upon creating
> or opening a ledger, the call returns a ledger handle, which you use to add
> to the ledger or read from the ledger, depending on the state of the ledger.
>
> You'll also find the documentation of the API here:
>
> http://zookeeper.apache.org/bookkeeper/docs/trunk/bookkeeperProgrammer.html
>
> -Flavio
>
>
> On Sep 6, 2011, at 7:02 AM, Yang wrote:
>
> I was trying to learn how to use BookKeeper, so I started from the test
> code
> BookieClientTest.java, and stripped it down to the
> most basic form (code pasted below),
>
> now I just have the readEntry callback print out onto screen, but it
> doesn't
> seem to be executed. there is not much doc available,
> where am I doing wrong?
>
> I setup my separate bookie server as instructed by the README.txt , by
> java -cp
>
> $MYLIB:\$\{dist.dir\}/contrib/bookeper/zookeeper-dev-bookkeeper.jar:/home/yyang/work/zookeeper/zookeeper-3.3.3/zookeeper-3.3.3.jar
> org.apache.bookkeeper.util.LocalBookKeeper 1
>
>
> Thanks a lot
> Yang
>
>
> ///////////////////////////////////////
> 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.
> *
> */
>
> import java.io.File;
> import java.net.InetSocketAddress;
> import java.nio.ByteBuffer;
> import java.util.Arrays;
> import java.util.concurrent.Executors;
>
> import org.jboss.netty.buffer.ChannelBuffer;
> import org.jboss.netty.buffer.ChannelBuffers;
> import org.jboss.netty.channel.socket.ClientSocketChannelFactory;
> import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
> import org.junit.Test;
> import org.apache.bookkeeper.client.BKException;
> import org.apache.bookkeeper.proto.BookieClient;
> import org.apache.bookkeeper.proto.BookieServer;
> import
> org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.ReadEntryCallback;
> import
> org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.WriteCallback;
> import org.apache.bookkeeper.util.OrderedSafeExecutor;
> import org.apache.log4j.Logger;
>
> import junit.framework.TestCase;
>
> public class SimpleClientTest extends TestCase {
> static Logger LOG = Logger.getLogger(SimpleClientTest.class);
> BookieServer bs;
> File tmpDir;
> int port = 5000;
> ClientSocketChannelFactory channelFactory;
> OrderedSafeExecutor executor;
>
> @Override
> protected void setUp() throws Exception {
>
> channelFactory = new
> NioClientSocketChannelFactory(Executors.newCachedThreadPool(), Executors
> .newCachedThreadPool());
> executor = new OrderedSafeExecutor(2);
> }
>
>
> ReadEntryCallback recb = new ReadEntryCallback() {
>
> public void readEntryComplete(int rc, long ledgerId, long entryId,
> ChannelBuffer bb, Object ctx) {
> System.out.println("read something" + ledgerId + " " + entryId +
> " " + bb);
> }
>
> };
>
> WriteCallback wrcb = new WriteCallback() {
> public void writeComplete(int rc, long ledgerId, long entryId,
> InetSocketAddress addr, Object ctx) {
> if (ctx != null) {
> synchronized (ctx) {
> ctx.notifyAll();
> }
> }
> }
> };
>
> @Test
> public void testWriteGaps() throws Exception {
> byte[] passwd = new byte[20];
> Arrays.fill(passwd, (byte) 'a');
> InetSocketAddress addr = new InetSocketAddress("127.0.0.1", port);
>
> BookieClient bc = new BookieClient(channelFactory, executor);
> ChannelBuffer bb;
> bb = createByteBuffer(1, 1, 1);
> bc.addEntry(addr, 1, passwd, 1, bb, wrcb, null);
> bc.readEntry(addr, 1, 1, recb, null);
>
> }
>
> private ChannelBuffer createByteBuffer(int i, long lid, long eid) {
> ByteBuffer bb;
> bb = ByteBuffer.allocate(4 + 16);
> bb.putLong(lid);
> bb.putLong(eid);
> bb.putInt(i);
> bb.flip();
> return ChannelBuffers.wrappedBuffer(bb);
> }
> }
>
>
> *flavio*
> *junqueira*
>
> research scientist
>
> fpj@yahoo-inc.com
> direct +34 93-183-8828
>
> avinguda diagonal 177, 8th floor, barcelona, 08018, es
> phone (408) 349 3300 fax (408) 349 3301
>
>
>