public void ScanTableCancelAsyncScanner()
{
if (!HasAsyncTableScanner) {
return;
}
var rng = new Random();
for (var r = 0; r < 5; ++r) {
var ca = 0;
var caLimit = rng.Next(CountA / 2);
var caTotal = 0;
var cb = 0;
var cbLimit = rng.Next(CountB / 2);
var cbTotal = 0;
var cc = 0;
using (var asyncResult = new AsyncResult()) {
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a"),
(ctx, cells) =>
{
ca += cells.Count;
if (caTotal == 0 && ca > caLimit) {
caTotal = ca;
return AsyncCallbackResult.Cancel;
}
return AsyncCallbackResult.Continue;
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a", "b", "c"),
(ctx, cells) =>
{
cb += cells.Count;
if (cbTotal == 0 && cb > cbLimit) {
cbTotal = cb;
return AsyncCallbackResult.Cancel;
}
return AsyncCallbackResult.Continue;
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("b", "c"),
(ctx, cells) =>
{
cc += cells.Count;
return AsyncCallbackResult.Continue;
});
asyncResult.Join();
Assert.IsNull(asyncResult.Error, asyncResult.Error != null ? asyncResult.Error.ToString() : string.Empty);
Assert.IsTrue(asyncResult.IsCompleted);
Assert.IsFalse(asyncResult.IsCancelled);
Assert.AreEqual(caTotal, ca);
Assert.AreEqual(cbTotal, cb);
Assert.AreEqual(CountB + CountC, cc);
ca = 0;
caLimit = rng.Next(CountA / 2);
caTotal = 0;
cb = 0;
cbLimit = rng.Next(CountB / 2);
cbTotal = 0;
cc = 0;
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a"),
(ctx, cells) =>
{
ca += cells.Count;
if (caTotal == 0 && ca > caLimit) {
caTotal = ca;
asyncResult.CancelAsyncScanner(ctx);
}
return AsyncCallbackResult.Continue;
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a", "b", "c"),
(ctx, cells) =>
{
cb += cells.Count;
if (cbTotal == 0 && cb > cbLimit) {
cbTotal = cb;
asyncResult.CancelAsyncScanner(ctx);
}
return AsyncCallbackResult.Continue;
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("b", "c"),
(ctx, cells) =>
{
cc += cells.Count;
return AsyncCallbackResult.Continue;
});
asyncResult.Join();
Assert.IsNull(asyncResult.Error, asyncResult.Error != null ? asyncResult.Error.ToString() : string.Empty);
Assert.IsTrue(asyncResult.IsCompleted);
Assert.IsFalse(asyncResult.IsCancelled);
Assert.AreEqual(caTotal, ca);
Assert.AreEqual(cbTotal, cb);
Assert.AreEqual(CountB + CountC, cc);
}
}
}
public void ScanTableCancelAsyncScanner()
{
if (!HasAsyncTableScanner)
{
return;
}
var rng = new Random();
for (var r = 0; r < 5; ++r)
{
var ca = 0;
var caLimit = rng.Next(CountA / 2);
var caTotal = 0;
var cb = 0;
var cbLimit = rng.Next(CountB / 2);
var cbTotal = 0;
var cc = 0;
using (var asyncResult = new AsyncResult()) {
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a"),
(ctx, cells) =>
{
ca += cells.Count;
if (caTotal == 0 && ca > caLimit)
{
caTotal = ca;
return(AsyncCallbackResult.Cancel);
}
return(AsyncCallbackResult.Continue);
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a", "b", "c"),
(ctx, cells) =>
{
cb += cells.Count;
if (cbTotal == 0 && cb > cbLimit)
{
cbTotal = cb;
return(AsyncCallbackResult.Cancel);
}
return(AsyncCallbackResult.Continue);
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("b", "c"),
(ctx, cells) =>
{
cc += cells.Count;
return(AsyncCallbackResult.Continue);
});
asyncResult.Join();
Assert.IsNull(asyncResult.Error, asyncResult.Error != null ? asyncResult.Error.ToString() : string.Empty);
Assert.IsTrue(asyncResult.IsCompleted);
Assert.IsFalse(asyncResult.IsCancelled);
Assert.AreEqual(caTotal, ca);
Assert.AreEqual(cbTotal, cb);
Assert.AreEqual(CountB + CountC, cc);
ca = 0;
caLimit = rng.Next(CountA / 2);
caTotal = 0;
cb = 0;
cbLimit = rng.Next(CountB / 2);
cbTotal = 0;
cc = 0;
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a"),
(ctx, cells) =>
{
ca += cells.Count;
if (caTotal == 0 && ca > caLimit)
{
caTotal = ca;
asyncResult.CancelAsyncScanner(ctx);
}
return(AsyncCallbackResult.Continue);
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("a", "b", "c"),
(ctx, cells) =>
{
cb += cells.Count;
if (cbTotal == 0 && cb > cbLimit)
{
cbTotal = cb;
asyncResult.CancelAsyncScanner(ctx);
}
return(AsyncCallbackResult.Continue);
});
table.BeginScan(
asyncResult,
new ScanSpec().AddColumn("b", "c"),
(ctx, cells) =>
{
cc += cells.Count;
return(AsyncCallbackResult.Continue);
});
asyncResult.Join();
Assert.IsNull(asyncResult.Error, asyncResult.Error != null ? asyncResult.Error.ToString() : string.Empty);
Assert.IsTrue(asyncResult.IsCompleted);
Assert.IsFalse(asyncResult.IsCancelled);
Assert.AreEqual(caTotal, ca);
Assert.AreEqual(cbTotal, cb);
Assert.AreEqual(CountB + CountC, cc);
}
}
}