codelipenghui commented on a change in pull request #5570: Transaction log implemention URL: https://github.com/apache/pulsar/pull/5570#discussion_r350035812
########## File path: pulsar-transaction/coordinator/src/main/java/org/apache/pulsar/transaction/coordinator/impl/ManagedLedgerTransactionMetadataStore.java ########## @@ -0,0 +1,460 @@ +/** + * 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.pulsar.transaction.coordinator.impl; + +import io.netty.buffer.ByteBuf; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentMap; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.atomic.AtomicLong; + +import org.apache.bookkeeper.mledger.AsyncCallbacks; +import org.apache.bookkeeper.mledger.Entry; +import org.apache.bookkeeper.mledger.ManagedLedgerException; +import org.apache.bookkeeper.mledger.ManagedLedgerFactory; + +import org.apache.pulsar.common.api.proto.PulsarApi.Subscription; +import org.apache.pulsar.common.api.proto.PulsarApi.TransactionMetadataEntry; +import org.apache.pulsar.common.api.proto.PulsarApi.TransactionMetadataEntry.TransactionMetadataOp; +import org.apache.pulsar.common.api.proto.PulsarApi.TxnStatus; +import org.apache.pulsar.common.util.FutureUtil; + +import org.apache.pulsar.common.util.protobuf.ByteBufCodedInputStream; +import org.apache.pulsar.transaction.coordinator.TransactionCoordinatorID; +import org.apache.pulsar.transaction.coordinator.TransactionMetadataStore; +import org.apache.pulsar.transaction.coordinator.TransactionMetadataStoreState; +import org.apache.pulsar.transaction.coordinator.TxnMeta; +import org.apache.pulsar.transaction.coordinator.TxnSubscription; +import org.apache.pulsar.transaction.coordinator.exceptions.InvalidTxnStatusException; +import org.apache.pulsar.transaction.coordinator.exceptions.TransactionMetadataStoreStateException; +import org.apache.pulsar.transaction.coordinator.exceptions.TransactionNotFoundException; +import org.apache.pulsar.transaction.impl.common.TxnID; + +import org.jctools.queues.MessagePassingQueue; +import org.jctools.queues.SpscArrayQueue; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +/** + * The provider that offers managed ledger implementation of {@link TransactionMetadataStore}. + */ +public class ManagedLedgerTransactionMetadataStore + extends TransactionMetadataStoreState implements TransactionMetadataStore { + + private static final Logger log = LoggerFactory.getLogger(ManagedLedgerTransactionMetadataStore.class); + + private final TransactionCoordinatorID tcID; + private AtomicLong sequenceId = new AtomicLong(TC_ID_NOT_USED); + private final ManagedLedgerTransactionLogImpl transactionLog; + private static final long TC_ID_NOT_USED = -1L; + private ConcurrentMap<TxnID, TxnMeta> txnMetaMap = new ConcurrentHashMap<>(); + private SpscArrayQueue<Entry> entryQueue; + private volatile long loadCount; + + public ManagedLedgerTransactionMetadataStore(TransactionCoordinatorID tcID, + ManagedLedgerFactory managedLedgerFactory) throws Exception { + super(State.None); + this.tcID = tcID; + this.transactionLog = + new ManagedLedgerTransactionLogImpl(tcID.getId(), managedLedgerFactory); + this.entryQueue = new SpscArrayQueue<>(2000); + init(); + } + + private ConcurrentMap<TxnID, TxnMeta> getTxnMetaMap() { + return txnMetaMap; + } + + public AtomicLong getSequenceId() { + return sequenceId; + } + + @Override + public CompletableFuture<TxnStatus> getTxnStatus(TxnID txnID) { + return CompletableFuture.completedFuture(txnMetaMap.get(txnID).status()); + } + + @Override + public CompletableFuture<TxnMeta> getTxnMetaAsync(TxnID txnID) { + return CompletableFuture.completedFuture(txnMetaMap.get(txnID)); + } + + @Override + public CompletableFuture<TxnID> newTransactionAsync() { + return FutureUtil.failedFuture(new UnsupportedOperationException()); + } + + @Override + public CompletableFuture<TxnID> newTransactionAsync(long timeOut) { + if (!checkIfReady()) { + return FutureUtil.failedFuture( + new TransactionMetadataStoreStateException(tcID, State.Ready, getState(), "new Transaction")); + } + long mostSigBits = tcID.getId(); + long leastSigBits = sequenceId.incrementAndGet(); + TxnID txnID = new TxnID(mostSigBits, leastSigBits); + long currentTimeMillis = System.currentTimeMillis(); + TransactionMetadataEntry transactionMetadataEntry = TransactionMetadataEntry + .newBuilder() + .setTxnidMostBits(mostSigBits) + .setTxnidLeastBits(leastSigBits) + .setStartTime(currentTimeMillis) + .setTimeoutMs(timeOut) + .setMetadataOp(TransactionMetadataOp.NEW) + .setLastModificationTime(currentTimeMillis) + .build(); + CompletableFuture<TxnID> completableFuture = new CompletableFuture<>(); + transactionLog.write(transactionMetadataEntry) + .whenComplete((v, e) -> { + if (e == null) { + txnMetaMap.put(txnID, new TxnMetaImpl(txnID)); + completableFuture.complete(txnID); + } else { + completableFuture.completeExceptionally(e); + } + transactionMetadataEntry.recycle(); + }); + return completableFuture; + } + + @Override + public CompletableFuture<Void> addProducedPartitionToTxnAsync(TxnID txnID, List<String> partitions) { + if (!checkIfReady()) { + return FutureUtil.failedFuture( + new TransactionMetadataStoreStateException(txnID, + State.Ready, getState(), "add produced partition")); + } + return getTxnMetaAsync(txnID).thenCompose(txn -> { + if (txn == null) { + return FutureUtil.failedFuture(new TransactionNotFoundException("Transaction not found :" + txnID)); + } else { + TransactionMetadataEntry transactionMetadataEntry = TransactionMetadataEntry + .newBuilder() + .setTxnidMostBits(txnID.getMostSigBits()) + .setTxnidLeastBits(txnID.getLeastSigBits()) + .setMetadataOp(TransactionMetadataOp.ADD_PARTITION) + .addAllPartitions(partitions) + .setLastModificationTime(System.currentTimeMillis()) + .build(); + + return transactionLog.write(transactionMetadataEntry) + .thenCompose(v -> { + try { + txn.addProducedPartitions(partitions); + transactionMetadataEntry.recycle(); + return CompletableFuture.completedFuture(null); + } catch (InvalidTxnStatusException e) { + log.error("TxnID : " + txn.id().toString() + + " add produced partition error with TxnStatus : " + + txn.status().name(), e); + CompletableFuture<Void> completableFuture = new CompletableFuture<>(); + completableFuture.completeExceptionally(e); + transactionMetadataEntry.recycle(); + return completableFuture; + } + }); + } + }); + } + + @Override + public CompletableFuture<Void> addAckedPartitionToTxnAsync(TxnID txnID, List<TxnSubscription> txnSubscriptions) { + if (!checkIfReady()) { + return FutureUtil.failedFuture( + new TransactionMetadataStoreStateException(txnID, + State.Ready, getState(), "add acked partition")); + } + return getTxnMetaAsync(txnID).thenCompose(txn -> { + if (txn == null) { + return FutureUtil.failedFuture(new TransactionNotFoundException("Transaction not found :" + txnID)); + } else { + TransactionMetadataEntry transactionMetadataEntry = TransactionMetadataEntry + .newBuilder() + .setTxnidMostBits(txnID.getMostSigBits()) + .setTxnidLeastBits(txnID.getLeastSigBits()) + .setMetadataOp(TransactionMetadataOp.ADD_SUBSCRIPTION) + .addAllSubscriptions(txnSubscriptionToSubscription(txnSubscriptions)) + .setLastModificationTime(System.currentTimeMillis()) + .build(); + + return transactionLog.write(transactionMetadataEntry) + .thenCompose(txnMeta -> { + try { + txn.addAckedPartitions(txnSubscriptions); + transactionMetadataEntry.recycle(); + return CompletableFuture.completedFuture(null); + } catch (InvalidTxnStatusException e) { + log.error("TxnID : " + txn.id().toString() + + " add acked subscription error with TxnStatus : " + + txn.status().name(), e); + CompletableFuture<Void> completableFuture = new CompletableFuture<>(); + completableFuture.completeExceptionally(e); + transactionMetadataEntry.recycle(); + return completableFuture; + } + }); + } + }); + } + + @Override + public CompletableFuture<Void> updateTxnStatusAsync(TxnID txnID, TxnStatus newStatus, TxnStatus expectedStatus) { + if (!checkIfReady()) { + return FutureUtil.failedFuture( + new TransactionMetadataStoreStateException(txnID, + State.Ready, getState(), "update transaction status")); + } + return getTxnMetaAsync(txnID).thenCompose(txn -> { + if (txn == null) { + return FutureUtil.failedFuture(new TransactionNotFoundException("Transaction not found :" + txnID)); + } else { + CompletableFuture<Void> completableFuture = new CompletableFuture<>(); + synchronized (txn) { + TransactionMetadataEntry transactionMetadataEntry = TransactionMetadataEntry + .newBuilder() + .setTxnidMostBits(txnID.getMostSigBits()) + .setTxnidLeastBits(txnID.getLeastSigBits()) + .setExpectedStatus(expectedStatus) + .setMetadataOp(TransactionMetadataOp.UPDATE) + .setLastModificationTime(System.currentTimeMillis()) + .setNewStatus(newStatus) + .build(); + try { + transactionLog.write(transactionMetadataEntry).get(); + txn.updateTxnStatus(newStatus, expectedStatus); + completableFuture.complete(null); + } catch (InterruptedException | ExecutionException | InvalidTxnStatusException e) { + log.error("TxnID : " + txn.id().toString() + + " add update txn status error with TxnStatus : " + + txn.status().name(), e); + completableFuture.completeExceptionally(e); + } + transactionMetadataEntry.recycle(); + } + return completableFuture; + } + }); + } + + @Override + public CompletableFuture<Void> closeAsync() { + return transactionLog.close().thenCompose(v -> { + entryQueue.clear(); + txnMetaMap.clear(); + if (!this.changeToClose()) { + return FutureUtil.failedFuture( + new IllegalStateException("Managed ledger transaction metadata store state to close error!")); + } + return CompletableFuture.completedFuture(null); + }); + } + + public void init() { + + if (!changeToInitializingState()) { + log.error("Managed ledger transaction metadata store change state error when init it"); + return; + } + new Thread(new LoadLogToCache(this, transactionLog), + "Transaction log read entry thread").start(); Review comment: It's better to name the thread `ReplayTransactionLogThread` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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