Examples with Subspace com.apple.foundationdb.subspace.Subspace used on opensource projects

Example 61 with Subspace

use of com.apple.foundationdb.subspace.Subspace in project fdb-record-layer by FoundationDB.

the class SynchronizedSessionRunner method startSessionAsync.

/**
 * Produces a new runner, wrapping a given runner, which performs all work in the context of a new
 * {@link SynchronizedSession}.
 * <p>
 * The returned runner will have acquired and started the lease, so care must be taken to ensure that
 * work begins before the lease expiration period.
 * </p>
 * @param lockSubspace the lock for which the session contends
 * @param leaseLengthMill length between last access and lease's end time in milliseconds
 * @param runner the underlying runner
 * @return a future that will return a runner maintaining a new synchronized session
 */
public static CompletableFuture<SynchronizedSessionRunner> startSessionAsync(@Nonnull Subspace lockSubspace, long leaseLengthMill, @Nonnull FDBDatabaseRunnerImpl runner) {
    final UUID newSessionId = UUID.randomUUID();
    SynchronizedSession session = new SynchronizedSession(lockSubspace, newSessionId, leaseLengthMill);
    return runner.runAsync(context -> session.initializeSessionAsync(context.ensureActive()), Arrays.asList(LogMessageKeys.TRANSACTION_NAME, "SynchronizedSessionRunner::startSession", LogMessageKeys.SESSION_ID, session.getSessionId(), LogMessageKeys.SUBSPACE, lockSubspace)).thenApply(vignore -> new SynchronizedSessionRunner(runner, session));
}