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Example 6 with TxnResource

use of io.pravega.controller.store.task.TxnResource in project pravega by pravega.

the class StreamTransactionMetadataTasks method sealTxnBody.

/**
 * Seals a txn and transitions it to COMMITTING (resp. ABORTING) state if commit param is true (resp. false).
 *
 * Post-condition:
 * 1. If seal completes successfully, then
 *     (a) txn state is COMMITTING/ABORTING,
 *     (b) CommitEvent/AbortEvent is present in the commit stream/abort stream,
 *     (c) txn is removed from host-txn index,
 *     (d) txn is removed from the timeout service.
 *
 * 2. If process fails after transitioning txn to COMMITTING/ABORTING state, but before responding to client, then
 * since txn is present in the host-txn index, some other controller process shall put CommitEvent/AbortEvent to
 * commit stream/abort stream.
 *
 * @param host    host id. It is different from hostId iff invoked from TxnSweeper for aborting orphaned txn.
 * @param scope   scope name.
 * @param stream  stream name.
 * @param commit  boolean indicating whether to commit txn.
 * @param txnId   txn id.
 * @param version expected version of txn node in store.
 * @param ctx     context.
 * @return        Txn status after sealing it.
 */
CompletableFuture<TxnStatus> sealTxnBody(final String host, final String scope, final String stream, final boolean commit, final UUID txnId, final Integer version, final OperationContext ctx) {
    TxnResource resource = new TxnResource(scope, stream, txnId);
    Optional<Integer> versionOpt = Optional.ofNullable(version);
    // Step 1. Add txn to current host's index, if it is not already present
    CompletableFuture<Void> addIndex = host.equals(hostId) && !timeoutService.containsTxn(scope, stream, txnId) ? // then txn would no longer be open.
    streamMetadataStore.addTxnToIndex(hostId, resource, Integer.MAX_VALUE) : CompletableFuture.completedFuture(null);
    addIndex.whenComplete((v, e) -> {
        if (e != null) {
            log.debug("Txn={}, already present/newly added to host-txn index of host={}", txnId, hostId);
        } else {
            log.debug("Txn={}, added txn to host-txn index of host={}", txnId, hostId);
        }
    });
    // Step 2. Seal txn
    CompletableFuture<AbstractMap.SimpleEntry<TxnStatus, Integer>> sealFuture = addIndex.thenComposeAsync(x -> streamMetadataStore.sealTransaction(scope, stream, txnId, commit, versionOpt, ctx, executor), executor).whenComplete((v, e) -> {
        if (e != null) {
            log.debug("Txn={}, failed sealing txn", txnId);
        } else {
            log.debug("Txn={}, sealed successfully, commit={}", txnId, commit);
        }
    });
    // Step 3. write event to corresponding stream.
    return sealFuture.thenComposeAsync(pair -> {
        TxnStatus status = pair.getKey();
        switch(status) {
            case COMMITTING:
                return writeCommitEvent(scope, stream, pair.getValue(), txnId, status);
            case ABORTING:
                return writeAbortEvent(scope, stream, pair.getValue(), txnId, status);
            case ABORTED:
            case COMMITTED:
                return CompletableFuture.completedFuture(status);
            case OPEN:
            case UNKNOWN:
            default:
                // exception would be thrown.
                return CompletableFuture.completedFuture(status);
        }
    }, executor).thenComposeAsync(status -> {
        // Step 4. Remove txn from timeoutService, and from the index.
        timeoutService.removeTxn(scope, stream, txnId);
        log.debug("Txn={}, removed from timeout service", txnId);
        return streamMetadataStore.removeTxnFromIndex(host, resource, true).whenComplete((v, e) -> {
            if (e != null) {
                log.debug("Txn={}, failed removing txn from host-txn index of host={}", txnId, hostId);
            } else {
                log.debug("Txn={}, removed txn from host-txn index of host={}", txnId, hostId);
            }
        }).thenApply(x -> status);
    }, executor);
}
Also used : CommitEvent(io.pravega.shared.controller.event.CommitEvent) OperationContext(io.pravega.controller.store.stream.OperationContext) ControllerEventProcessors(io.pravega.controller.server.eventProcessor.ControllerEventProcessors) Getter(lombok.Getter) EventStreamWriter(io.pravega.client.stream.EventStreamWriter) SegmentHelper(io.pravega.controller.server.SegmentHelper) PravegaInterceptor(io.pravega.controller.server.rpc.auth.PravegaInterceptor) CompletableFuture(java.util.concurrent.CompletableFuture) TimeoutServiceConfig(io.pravega.controller.timeout.TimeoutServiceConfig) Status(io.pravega.controller.stream.api.grpc.v1.Controller.PingTxnStatus.Status) AbortEvent(io.pravega.shared.controller.event.AbortEvent) Pair(org.apache.commons.lang3.tuple.Pair) Duration(java.time.Duration) ScheduledExecutorService(java.util.concurrent.ScheduledExecutorService) RETRYABLE_PREDICATE(io.pravega.controller.util.RetryHelper.RETRYABLE_PREDICATE) Segment(io.pravega.controller.store.stream.Segment) TimerWheelTimeoutService(io.pravega.controller.timeout.TimerWheelTimeoutService) ConnectionFactory(io.pravega.client.netty.impl.ConnectionFactory) EventWriterConfig(io.pravega.client.stream.EventWriterConfig) RetryHelper.withRetriesAsync(io.pravega.controller.util.RetryHelper.withRetriesAsync) ControllerEventProcessorConfig(io.pravega.controller.server.eventProcessor.ControllerEventProcessorConfig) BlockingQueue(java.util.concurrent.BlockingQueue) UUID(java.util.UUID) Collectors(java.util.stream.Collectors) TxnResource(io.pravega.controller.store.task.TxnResource) ImmutablePair(org.apache.commons.lang3.tuple.ImmutablePair) TimeUnit(java.util.concurrent.TimeUnit) CountDownLatch(java.util.concurrent.CountDownLatch) AbstractMap(java.util.AbstractMap) List(java.util.List) Slf4j(lombok.extern.slf4j.Slf4j) Config(io.pravega.controller.util.Config) HostControllerStore(io.pravega.controller.store.host.HostControllerStore) TxnStatus(io.pravega.controller.store.stream.TxnStatus) ClientFactory(io.pravega.client.ClientFactory) VersionedTransactionData(io.pravega.controller.store.stream.VersionedTransactionData) Optional(java.util.Optional) TimeoutService(io.pravega.controller.timeout.TimeoutService) VisibleForTesting(com.google.common.annotations.VisibleForTesting) StreamMetadataStore(io.pravega.controller.store.stream.StreamMetadataStore) PingTxnStatus(io.pravega.controller.stream.api.grpc.v1.Controller.PingTxnStatus) Futures(io.pravega.common.concurrent.Futures) TxnResource(io.pravega.controller.store.task.TxnResource) TxnStatus(io.pravega.controller.store.stream.TxnStatus) PingTxnStatus(io.pravega.controller.stream.api.grpc.v1.Controller.PingTxnStatus)

Example 7 with TxnResource

use of io.pravega.controller.store.task.TxnResource in project pravega by pravega.

the class ZKStreamMetadataStoreTest method testConnectionLoss.

@Test
public void testConnectionLoss() throws Exception {
    String host = "host";
    TxnResource txn = new TxnResource("SCOPE", "STREAM1", UUID.randomUUID());
    Predicate<Throwable> checker = (Throwable ex) -> ex instanceof StoreException.StoreConnectionException;
    zkServer.close();
    AssertExtensions.assertFutureThrows("Add txn to index fails", store.addTxnToIndex(host, txn, new Version.IntVersion(0)), checker);
}
Also used : TxnResource(io.pravega.controller.store.task.TxnResource) Test(org.junit.Test)

Example 8 with TxnResource

use of io.pravega.controller.store.task.TxnResource in project pravega by pravega.

the class TxnSweeper method failOverOpenTxn.

private CompletableFuture<Void> failOverOpenTxn(String failedHost, TxnResource txn) {
    String scope = txn.getScope();
    String stream = txn.getStream();
    UUID txnId = txn.getTxnId();
    log.info("Host = {}, failing over open transaction {}/{}/{}", failedHost, scope, stream, txnId);
    return streamMetadataStore.getTransactionData(scope, stream, txnId, null, executor).thenCompose(txnData -> transactionMetadataTasks.pingTxn(scope, stream, txn.getTxnId(), Config.MAX_LEASE_VALUE, ControllerService.nextRequestId())).thenComposeAsync(status -> streamMetadataStore.removeTxnFromIndex(failedHost, txn, true), executor);
}
Also used : CommitEvent(io.pravega.shared.controller.event.CommitEvent) ControllerService(io.pravega.controller.server.ControllerService) RetryHelper.withRetriesAsync(io.pravega.controller.util.RetryHelper.withRetriesAsync) Exceptions(io.pravega.common.Exceptions) Set(java.util.Set) CompletableFuture(java.util.concurrent.CompletableFuture) CompletionException(java.util.concurrent.CompletionException) UUID(java.util.UUID) Supplier(java.util.function.Supplier) Collectors(java.util.stream.Collectors) FailoverSweeper(io.pravega.controller.fault.FailoverSweeper) TxnResource(io.pravega.controller.store.task.TxnResource) Slf4j(lombok.extern.slf4j.Slf4j) AbortEvent(io.pravega.shared.controller.event.AbortEvent) StoreException(io.pravega.controller.store.stream.StoreException) Config(io.pravega.controller.util.Config) Duration(java.time.Duration) VersionedTransactionData(io.pravega.controller.store.stream.VersionedTransactionData) Data(lombok.Data) ScheduledExecutorService(java.util.concurrent.ScheduledExecutorService) RETRYABLE_PREDICATE(io.pravega.controller.util.RetryHelper.RETRYABLE_PREDICATE) Preconditions(com.google.common.base.Preconditions) StreamMetadataStore(io.pravega.controller.store.stream.StreamMetadataStore) Futures(io.pravega.common.concurrent.Futures) UUID(java.util.UUID)

Aggregations

TxnResource (io.pravega.controller.store.task.TxnResource)8 UUID (java.util.UUID)6 Futures (io.pravega.common.concurrent.Futures)5 StreamMetadataStore (io.pravega.controller.store.stream.StreamMetadataStore)5 VersionedTransactionData (io.pravega.controller.store.stream.VersionedTransactionData)5 Config (io.pravega.controller.util.Config)5 RETRYABLE_PREDICATE (io.pravega.controller.util.RetryHelper.RETRYABLE_PREDICATE)5 RetryHelper.withRetriesAsync (io.pravega.controller.util.RetryHelper.withRetriesAsync)5 AbortEvent (io.pravega.shared.controller.event.AbortEvent)5 CommitEvent (io.pravega.shared.controller.event.CommitEvent)5 Duration (java.time.Duration)5 CompletableFuture (java.util.concurrent.CompletableFuture)5 ScheduledExecutorService (java.util.concurrent.ScheduledExecutorService)5 Collectors (java.util.stream.Collectors)5 Slf4j (lombok.extern.slf4j.Slf4j)4 VisibleForTesting (com.google.common.annotations.VisibleForTesting)3 Preconditions (com.google.common.base.Preconditions)3 EventStreamWriter (io.pravega.client.stream.EventStreamWriter)3 EventWriterConfig (io.pravega.client.stream.EventWriterConfig)3 Exceptions (io.pravega.common.Exceptions)3