| /** |
| * 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. |
| */ |
| package org.apache.bookkeeper.client; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.netty.buffer.Unpooled; |
| import java.net.InetSocketAddress; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.SortedMap; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import org.apache.bookkeeper.client.BKException.BKNoSuchEntryException; |
| import org.apache.bookkeeper.client.BKException.Code; |
| import org.apache.bookkeeper.client.DistributionSchedule.WriteSet; |
| import org.apache.bookkeeper.client.api.LedgerEntries; |
| import org.apache.bookkeeper.client.impl.LedgerEntryImpl; |
| import org.apache.bookkeeper.common.concurrent.FutureEventListener; |
| import org.apache.bookkeeper.net.BookieSocketAddress; |
| import org.apache.bookkeeper.proto.BookieClient; |
| import org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.GenericCallback; |
| import org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.ReadEntryCallback; |
| |
| /** |
| * Reader used for DL tools to read entries. |
| */ |
| public class LedgerReader { |
| |
| /** |
| * Read Result Holder. |
| */ |
| public static class ReadResult<T> { |
| final long entryId; |
| final int rc; |
| final T value; |
| final InetSocketAddress srcAddr; |
| |
| ReadResult(long entryId, int rc, T value, InetSocketAddress srcAddr) { |
| this.entryId = entryId; |
| this.rc = rc; |
| this.value = value; |
| this.srcAddr = srcAddr; |
| } |
| |
| public long getEntryId() { |
| return entryId; |
| } |
| |
| public int getResultCode() { |
| return rc; |
| } |
| |
| public T getValue() { |
| return value; |
| } |
| |
| public InetSocketAddress getBookieAddress() { |
| return srcAddr; |
| } |
| } |
| |
| private final BookieClient bookieClient; |
| |
| public LedgerReader(BookKeeper bkc) { |
| bookieClient = bkc.getBookieClient(); |
| } |
| |
| public static SortedMap<Long, ArrayList<BookieSocketAddress>> bookiesForLedger(final LedgerHandle lh) { |
| return lh.getLedgerMetadata().getEnsembles(); |
| } |
| |
| public void readEntriesFromAllBookies(final LedgerHandle lh, long eid, |
| final GenericCallback<Set<ReadResult<ByteBuf>>> callback) { |
| WriteSet writeSet = lh.distributionSchedule.getWriteSet(eid); |
| final AtomicInteger numBookies = new AtomicInteger(writeSet.size()); |
| final Set<ReadResult<ByteBuf>> readResults = new HashSet<>(); |
| ReadEntryCallback readEntryCallback = new ReadEntryCallback() { |
| @Override |
| public void readEntryComplete(int rc, long lid, long eid, ByteBuf buffer, Object ctx) { |
| BookieSocketAddress bookieAddress = (BookieSocketAddress) ctx; |
| ReadResult<ByteBuf> rr; |
| if (BKException.Code.OK != rc) { |
| rr = new ReadResult<>(eid, rc, null, bookieAddress.getSocketAddress()); |
| } else { |
| ByteBuf content; |
| try { |
| content = lh.macManager.verifyDigestAndReturnData(eid, buffer); |
| ByteBuf toRet = Unpooled.copiedBuffer(content); |
| rr = new ReadResult<>(eid, BKException.Code.OK, toRet, bookieAddress.getSocketAddress()); |
| } catch (BKException.BKDigestMatchException e) { |
| rr = new ReadResult<>( |
| eid, BKException.Code.DigestMatchException, null, bookieAddress.getSocketAddress()); |
| |
| } finally { |
| buffer.release(); |
| } |
| } |
| readResults.add(rr); |
| if (numBookies.decrementAndGet() == 0) { |
| callback.operationComplete(BKException.Code.OK, readResults); |
| } |
| } |
| }; |
| |
| ArrayList<BookieSocketAddress> ensemble = lh.getLedgerMetadata().getEnsemble(eid); |
| for (int i = 0; i < writeSet.size(); i++) { |
| int idx = writeSet.get(i); |
| bookieClient.readEntry(ensemble.get(idx), lh.getId(), eid, readEntryCallback, ensemble.get(idx)); |
| } |
| } |
| |
| /** |
| * Forward reading entries from last add confirmed. |
| * |
| * @param lh |
| * ledger handle to read entries |
| * @param callback |
| * callback with the entries from last add confirmed. |
| */ |
| public void forwardReadEntriesFromLastConfirmed(final LedgerHandle lh, |
| final GenericCallback<List<LedgerEntry>> callback) { |
| final List<LedgerEntry> resultList = new ArrayList<LedgerEntry>(); |
| |
| final FutureEventListener<LedgerEntries> readListener = new FutureEventListener<LedgerEntries>() { |
| |
| private void readNext(long entryId) { |
| PendingReadOp op = new PendingReadOp(lh, lh.bk.scheduler, entryId, entryId, false); |
| op.future().whenComplete(this); |
| op.submit(); |
| } |
| |
| @Override |
| public void onSuccess(LedgerEntries ledgerEntries) { |
| long entryId = -1L; |
| for (org.apache.bookkeeper.client.api.LedgerEntry entry : ledgerEntries) { |
| resultList.add(new LedgerEntry((LedgerEntryImpl) entry)); |
| entryId = entry.getEntryId(); |
| } |
| try { |
| ledgerEntries.close(); |
| } catch (Exception e) { |
| // bk should not throw any exceptions here |
| } |
| ++entryId; |
| readNext(entryId); |
| } |
| |
| @Override |
| public void onFailure(Throwable throwable) { |
| if (throwable instanceof BKNoSuchEntryException) { |
| callback.operationComplete(Code.OK, resultList); |
| } else { |
| int retCode; |
| if (throwable instanceof BKException) { |
| retCode = ((BKException) throwable).getCode(); |
| } else { |
| retCode = Code.UnexpectedConditionException; |
| } |
| callback.operationComplete(retCode, resultList); |
| } |
| } |
| }; |
| |
| ReadLastConfirmedOp.LastConfirmedDataCallback readLACCallback = (rc, recoveryData) -> { |
| if (BKException.Code.OK != rc) { |
| callback.operationComplete(rc, resultList); |
| return; |
| } |
| |
| |
| if (LedgerHandle.INVALID_ENTRY_ID >= recoveryData.lastAddConfirmed) { |
| callback.operationComplete(BKException.Code.OK, resultList); |
| return; |
| } |
| |
| long entryId = recoveryData.lastAddConfirmed; |
| PendingReadOp op = new PendingReadOp(lh, lh.bk.scheduler, entryId, entryId, false); |
| op.future().whenComplete(readListener); |
| op.submit(); |
| }; |
| // Read Last AddConfirmed |
| new ReadLastConfirmedOp(lh, readLACCallback).initiate(); |
| } |
| |
| public void readLacs(final LedgerHandle lh, long eid, |
| final GenericCallback<Set<ReadResult<Long>>> callback) { |
| WriteSet writeSet = lh.distributionSchedule.getWriteSet(eid); |
| final AtomicInteger numBookies = new AtomicInteger(writeSet.size()); |
| final Set<ReadResult<Long>> readResults = new HashSet<ReadResult<Long>>(); |
| ReadEntryCallback readEntryCallback = (rc, lid, eid1, buffer, ctx) -> { |
| InetSocketAddress bookieAddress = (InetSocketAddress) ctx; |
| ReadResult<Long> rr; |
| if (BKException.Code.OK != rc) { |
| rr = new ReadResult<Long>(eid1, rc, null, bookieAddress); |
| } else { |
| try { |
| DigestManager.RecoveryData data = lh.macManager.verifyDigestAndReturnLastConfirmed(buffer); |
| rr = new ReadResult<Long>(eid1, BKException.Code.OK, data.lastAddConfirmed, bookieAddress); |
| } catch (BKException.BKDigestMatchException e) { |
| rr = new ReadResult<Long>(eid1, BKException.Code.DigestMatchException, null, bookieAddress); |
| } |
| } |
| readResults.add(rr); |
| if (numBookies.decrementAndGet() == 0) { |
| callback.operationComplete(BKException.Code.OK, readResults); |
| } |
| }; |
| |
| ArrayList<BookieSocketAddress> ensemble = lh.getLedgerMetadata().getEnsemble(eid); |
| for (int i = 0; i < writeSet.size(); i++) { |
| int idx = writeSet.get(i); |
| bookieClient.readEntry(ensemble.get(idx), lh.getId(), eid, readEntryCallback, ensemble.get(idx)); |
| } |
| } |
| } |