/// <summary>
/// Initializes a new instance of the <see cref="LockListForRW"/> class.
/// </summary>
/// <param name="createChangeList">Function to create change list</param>
/// <param name="lockDownPaths">The paths that must be in lockdown (or null)</param>
/// <param name="onlyOnEphemeral">Only used on ephemeral</param>
/// <param name="txId">Transanction ID</param>
public LockListForRW(Func <IChangeList> createChangeList, LockDownSet lockDownPaths, bool onlyOnEphemeral, long txId)
{
this.createChangeList = createChangeList;
this.lockDownPaths = lockDownPaths ?? throw new ArgumentNullException("lockDownPaths");
this.readonlyInterfaceRequiresLocks = true;
this.onlyOnEphemeral = onlyOnEphemeral;
this.TxId = txId;
}
/// <summary>
/// gets or creates a locklist
/// </summary>
/// <param name="req">the request this operation is for</param>
/// <param name="createChangeList">Function to create change list</param>
/// <param name="lockDownPaths">if not null, this is a list of paths that are in RW lockdown mode.</param>
/// <param name="txId">Transaction ID unique in the lifetime of service partition</param>
/// <returns>the locklist for this thread</returns>
internal ILockListTransaction GetOrCreateLockList(IRingMasterBackendRequest req, Func <Persistence.IChangeList> createChangeList, LockDownSet lockDownPaths, long txId)
{
IOperationOverrides over = req.Overrides;
ILockListTransaction ll;
ISessionAuth auth = req.Auth;
if (auth == null)
{
auth = this.authenticationInfo;
}
if (this.ROInterfaceRequiresLocks || this.WritesAllowed || !useROLocks)
{
ll = new LockListForRW(createChangeList, lockDownPaths, this.OnlyEphemeralChangesAllowed, txId);
}
else
{
ll = new LockListForRO();
}
try
{
ll.Initialize(auth, over);
}
catch (Exception)
{
ll.Dispose();
throw;
}
return(ll);
}