private static void Test2()
{
// This sample uses class key and value types, which are not blittable (i.e., they
// require a pointer to heap objects). Such datatypes include variable length types
// such as strings. You can override the default key equality comparer in two ways;
// (1) Make Key implement IFasterEqualityComparer<Key> interface
// (2) Provide IFasterEqualityComparer<Key> instance as param to constructor
// FASTER stores the actual objects in a separate object log.
// Note that serializers are required for class types, see below.
var dir = Path.GetTempPath() + "\\Faster";
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
var log = Devices.CreateLogDevice(Path.GetTempPath() + "hlog.log");
var objlog = Devices.CreateLogDevice(Path.GetTempPath() + "hlog.obj.log");
var h = new FasterKV
<MyKey, MyValue, MyInput, MyOutput, MyContext, MyFunctions>
(1L << 20, new MyFunctions(),
new LogSettings {
LogDevice = log, ObjectLogDevice = objlog, MemorySizeBits = 29, CopyReadsToTail = true
},
new CheckpointSettings()
{
CheckpointDir = ""
},
new SerializerSettings <MyKey, MyValue> {
keySerializer = () => new MyKeySerializer(), valueSerializer = () => new MyValueSerializer()
}
);
var context = default(MyContext);
// Each thread calls StartSession to register itself with FASTER
//var s = h.NewSession("Test");
var g = Guid.Parse("6eb89566-8ef4-4280-8559-50be0cd3fbfe");
h.Recover(g);
var s = h.ResumeSession("Test", out var aa);
MyKey key;
key = new MyKey {
Key = 23.ToString()
};
var inp1 = default(MyInput);
MyOutput g11 = new MyOutput();
var status1 = s.Read(ref key, ref inp1, ref g11, context, 0);
for (int i = 0; i < 20000; i++)
{
key = new MyKey {
Key = i.ToString()
};
var value = new MyValue
{
Value = i,
ExpireDate = DateTime.Now.AddSeconds(new Random().Next(60))
};
s.Upsert(ref key, ref value, context, 0);
// Each thread calls Refresh periodically for thread coordination
if (i % 1024 == 0)
{
s.Refresh();
}
}
h.Log.Flush(true);
//h.TakeFullCheckpoint(out var aa);
key = new MyKey {
Key = 23.ToString()
};
var input = default(MyInput);
MyOutput g1 = new MyOutput();
var status = s.Read(ref key, ref input, ref g1, context, 0);
if (status == Status.OK && g1.Value.Value.ToString() == key.Key)
{
Console.WriteLine("Success!");
}
else
{
Console.WriteLine("Error!");
}
MyOutput g2 = new MyOutput();
key = new MyKey {
Key = 46.ToString()
};
status = s.Read(ref key, ref input, ref g2, context, 0);
if (status == Status.OK && g2.Value.Value.ToString() == key.Key)
{
Console.WriteLine("Success!");
}
else
{
Console.WriteLine("Error!");
}
var inp = new MyValue()
{
Value = 1000,
ExpireDate = DateTime.Now.AddMinutes(1)
};
status = s.Upsert(ref key, ref inp, context, 0);
var outp = new MyOutput();
status = s.Read(ref key, ref input, ref outp, context, 0);
// Delete key, read to verify deletion
var output = new MyOutput();
s.Delete(ref key, context, 0);
status = s.Read(ref key, ref input, ref output, context, 0);
if (status == Status.NOTFOUND)
{
Console.WriteLine("Success!");
}
else
{
Console.WriteLine("Error!");
}
// Each thread ends session when done
s.Dispose();
// Dispose FASTER instance and log
h.Dispose();
log.Close();
objlog.Close();
Console.WriteLine("Press <ENTER> to end");
Console.ReadLine();
}
static public void Main()
{
// create MyObjs containing key and string data
MyObj obj1 = new MyObj(0003, "MyObj C");
MyObj obj2 = new MyObj(0001, "MyObj A");
MyObj obj3 = new MyObj(0002, "MyObj B");
MyObj obj4 = new MyObj(0004, "MyObj D");
MyObj obj5 = new MyObj(0005, "MyObj E");
try
{
// format: Add(key, value)
treap.Add(new MyKey(obj1.Key), obj1);
Console.WriteLine("Added to Treap, key: " + obj1.ToString());
treap.Add(new MyKey(obj2.Key), obj2);
Console.WriteLine("Added to Treap, key: " + obj2.ToString());
treap.Add(new MyKey(obj3.Key), obj3);
Console.WriteLine("Added to Treap, key: " + obj3.ToString());
treap.Add(new MyKey(obj4.Key), obj4);
Console.WriteLine("Added to Treap, key: " + obj4.ToString());
treap.Add(new MyKey(obj5.Key), obj5);
Console.WriteLine("Added to Treap, key: " + obj5.ToString());
Console.WriteLine(Environment.NewLine);
DumpTreap(true);
Console.WriteLine(Environment.NewLine);
Console.WriteLine("- Treap Values -");
TreapEnumerator t = treap.Values();
while (t.MoveNext())
{
Console.WriteLine(((MyObj)(t.Value)).Data);
}
Console.WriteLine(Environment.NewLine);
Console.WriteLine("- Treap Keys -");
TreapEnumerator k = treap.Keys();
while (k.MoveNext())
{
Console.WriteLine(k.Key);
}
Console.WriteLine(Environment.NewLine);
DumpMinMaxValue();
Console.WriteLine(Environment.NewLine);
// test Remove
MyKey tObjKey = (MyKey)treap.GetMinKey();
MyObj tObj = (MyObj)treap.GetData(tObjKey);
Console.WriteLine("Remove Min Key: " + tObj.ToString());
Console.WriteLine(Environment.NewLine);
treap.Remove(tObjKey);
DumpTreap(false);
Console.WriteLine(Environment.NewLine);
Console.WriteLine("Remove Max Value:" + treap.GetMaxValue().ToString());
treap.RemoveMax();
Console.WriteLine("Remove Min Value:" + treap.GetMinValue().ToString());
treap.RemoveMin();
Console.WriteLine(Environment.NewLine);
DumpTreap(true);
Console.WriteLine(Environment.NewLine);
Console.WriteLine("Remove Min Key:" + ((MyKey)(treap.GetMinKey())).ToString());
treap.RemoveMin();
Console.WriteLine("Remove Max Key:" + ((MyKey)(treap.GetMaxKey())).ToString());
treap.RemoveMax();
Console.WriteLine(Environment.NewLine);
DumpTreap(true);
Console.WriteLine(Environment.NewLine);
// add some more and clear the treap
Console.WriteLine("- Adding MyKeyObjs - ");
Console.WriteLine(Environment.NewLine);
MyKeyObj myKeyObj1 = new MyKeyObj(0025, "MyKeyObj W");
MyKeyObj myKeyObj2 = new MyKeyObj(0023, "MyKeyObj X");
MyKeyObj myKeyObj3 = new MyKeyObj(0026, "MyKeyObj Y");
MyKeyObj myKeyObj4 = new MyKeyObj(0024, "MyKeyObj Z");
treap.Add(myKeyObj1.Key, myKeyObj1);
Console.WriteLine("Added to Treap, key: " + myKeyObj1.ToString());
treap.Add(myKeyObj2.Key, myKeyObj2);
Console.WriteLine("Added to Treap, key: " + myKeyObj2.ToString());
treap.Add(myKeyObj3.Key, myKeyObj3);
Console.WriteLine("Added to Treap, key: " + myKeyObj3.ToString());
treap.Add(myKeyObj4.Key, myKeyObj4);
Console.WriteLine("Added to Treap, key: " + myKeyObj4.ToString());
Console.WriteLine(Environment.NewLine);
TraverseEnumerator();
Console.WriteLine(Environment.NewLine);
Console.WriteLine("- Clearing Treap -");
Console.WriteLine(Environment.NewLine);
treap.Clear();
DumpTreap(true);
Console.WriteLine(Environment.NewLine);
Console.WriteLine("Press enter to terminate");
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine("Press enter to terminate");
Console.ReadLine();
}
}