public TransactionContextTestNode AddChild(TransactionContextTestNode child)
{
child.Parent = this;
_children.Add(child);
return this;
}
public TransactionContextTestNode AddChild(TransactionContextTestNode child)
{
child.Parent = this;
_children.Add(child);
return(this);
}
private static async Task ExecuteNode(TransactionContextTestNode node)
{
if (node.Parent == null)
{
Assert.That(TransactionContext.CurrentTransactionContext, Is.Null);
}
var tcs = new TaskCompletionSource <TransactionContextState>();
using (var tx = new TransactionContext(node.Affinity))
{
Assert.That(TransactionContext.CurrentTransactionContext, Is.EqualTo(tx));
Assert.That(tx.IsController, Is.EqualTo(node.IsController));
if (node.IsController)
{
tx.StateChanged +=
(s, e) =>
{
if (e.NewState == TransactionContextState.Exited)
{
tcs.SetResult(e.OldState);
}
};
}
await node.ExecuteOperation().ConfigureAwait(false);
if (node.Children != null)
{
foreach (var child in node.Children)
{
await ExecuteNode(child).ConfigureAwait(false);
}
}
if (node.VoteAction == VoteAction.VoteCommit)
{
tx.VoteCommit();
}
else if (node.VoteAction == VoteAction.VoteRollback)
{
tx.VoteRollback();
}
}
if (node.Parent == null)
{
Assert.That(TransactionContext.CurrentTransactionContext, Is.Null);
}
if (node.IsController)
{
var actualCommitState = await tcs.Task.ConfigureAwait(false);
Assert.That(actualCommitState, Is.EqualTo(node.GetExpectedCommitState()));
}
}
private static async Task ExecuteNode(TransactionContextTestNode node)
{
if (node.Parent == null)
Assert.That(TransactionContext.CurrentTransactionContext, Is.Null);
var tcs = new TaskCompletionSource<TransactionContextState>();
using (var tx = new TransactionContext(node.Affinity))
{
Assert.That(TransactionContext.CurrentTransactionContext, Is.EqualTo(tx));
Assert.That(tx.IsController, Is.EqualTo(node.IsController));
if (node.IsController)
{
tx.StateChanged +=
(s, e) =>
{
if (e.NewState == TransactionContextState.Exited)
tcs.SetResult(e.OldState);
};
}
await node.ExecuteOperation().ConfigureAwait(false);
if (node.Children != null)
{
foreach (var child in node.Children)
await ExecuteNode(child).ConfigureAwait(false);
}
if (node.VoteAction == VoteAction.VoteCommit)
tx.VoteCommit();
else if (node.VoteAction == VoteAction.VoteRollback)
tx.VoteRollback();
}
if (node.Parent == null)
Assert.That(TransactionContext.CurrentTransactionContext, Is.Null);
if (node.IsController)
{
var actualCommitState = await tcs.Task.ConfigureAwait(false);
Assert.That(actualCommitState, Is.EqualTo(node.GetExpectedCommitState()));
}
}
public static async Task NestedContextTest(TransactionContextTestNode testNode)
{
const int IterationCount = 50;
const string TraceFileName = "Transactions.TransactionHandlerTest.NestedContextTest.log.csv";
try
{
Trace.AutoFlush = true;
Trace.UseGlobalLock = true;
Trace.Listeners.Add(new TextWriterTraceListener(new StreamWriter(TraceFileName, false)));
Trace.WriteLine(testNode.ToString(), "NLight.Tests.Unit.Transactions.TransactionHandlerTest");
var tasks = new List<Task>();
for (int i = 0; i < IterationCount; i++)
tasks.Add(Task.Factory.StartNew(() => ExecuteNode(testNode), TaskCreationOptions.DenyChildAttach).Unwrap());
await Task.WhenAll(tasks).ConfigureAwait(false);
}
finally
{
Trace.Close();
}
CheckTraceLog(TraceFileName);
}