/// <summary>
/// Execute the given callback having optionally acquired the given lock.
/// Because CMT assumes that the connection is already part of a managed
/// transaction, it does not attempt to commit or rollback the
/// enclosing transaction.
/// </summary>
/// <seealso cref="JobStoreSupport.ExecuteInNonManagedTXLock" />
/// <seealso cref="JobStoreSupport.ExecuteInLock" />
/// <seealso cref="JobStoreSupport.GetNonManagedTXConnection()" />
/// <seealso cref="JobStoreSupport.GetConnection()" />
/// <param name="lockName">
/// The name of the lock to acquire, for example
/// "TRIGGER_ACCESS". If null, then no lock is acquired, but the
/// txCallback is still executed in a transaction.
/// </param>
/// <param name="txCallback">Callback to execute.</param>
/// <param name="cancellationToken">The cancellation instruction.</param>
protected override async Task <T> ExecuteInLock <T>(
string lockName,
Func <ConnectionAndTransactionHolder, Task <T> > txCallback,
CancellationToken cancellationToken = default)
{
bool transOwner = false;
ConnectionAndTransactionHolder conn = null;
Guid requestorId = Guid.NewGuid();
try
{
if (lockName != null)
{
// If we aren't using db locks, then delay getting DB connection
// until after acquiring the lock since it isn't needed.
if (LockHandler.RequiresConnection)
{
conn = GetNonManagedTXConnection();
}
transOwner = await LockHandler.ObtainLock(requestorId, conn, lockName, cancellationToken).ConfigureAwait(false);
}
if (conn == null)
{
conn = GetNonManagedTXConnection();
}
return(await txCallback(conn).ConfigureAwait(false));
}
finally
{
try
{
await ReleaseLock(requestorId, lockName, transOwner, cancellationToken).ConfigureAwait(false);
}
finally
{
CleanupConnection(conn);
}
}
}
/// <summary>
/// Execute the given callback having optionally acquired the given lock.
/// Because CMT assumes that the connection is already part of a managed
/// transaction, it does not attempt to commit or rollback the
/// enclosing transaction.
/// </summary>
/// <seealso cref="JobStoreSupport.ExecuteInNonManagedTXLock(string,System.Func{Quartz.Impl.AdoJobStore.ConnectionAndTransactionHolder,object})" />
/// <seealso cref="JobStoreTX.ExecuteInLock(string,System.Func{Quartz.Impl.AdoJobStore.ConnectionAndTransactionHolder,object})" />
/// <seealso cref="JobStoreSupport.GetNonManagedTXConnection()" />
/// <seealso cref="JobStoreSupport.GetConnection()" />
/// <param name="lockName">
/// The name of the lock to acquire, for example
/// "TRIGGER_ACCESS". If null, then no lock is acquired, but the
/// txCallback is still executed in a transaction.
/// </param>
/// <param name="txCallback">Callback to execute.</param>
protected override object ExecuteInLock(
string lockName,
Func <ConnectionAndTransactionHolder, object> txCallback)
{
bool transOwner = false;
ConnectionAndTransactionHolder conn = null;
try
{
if (lockName != null)
{
// If we aren't using db locks, then delay getting DB connection
// until after acquiring the lock since it isn't needed.
if (LockHandler.RequiresConnection)
{
conn = GetNonManagedTXConnection();
}
transOwner = LockHandler.ObtainLock(DbMetadata, conn, lockName);
}
if (conn == null)
{
conn = GetNonManagedTXConnection();
}
return(txCallback(conn));
}
finally
{
try
{
ReleaseLock(LockTriggerAccess, transOwner);
}
finally
{
CleanupConnection(conn);
}
}
}
