public async Task Test_FdbMap_With_Custom_Key_Encoder()
{
// Use a table as a backing store for the rules of a Poor Man's firewall, where each keys are the IPEndPoint (tcp only!), and the values are "pass" or "block"
// Encode IPEndPoint as the (IP, Port,) encoded with the Tuple codec
// note: there is a much simpler way or creating composite keys, this is just a quick and dirty test!
var keyEncoder = KeyValueEncoders.Bind <IPEndPoint>(
(ipe) => ipe == null ? Slice.Empty : FdbTuple.EncodeKey(ipe.Address, ipe.Port),
(packed) =>
{
if (packed.IsNullOrEmpty)
{
return(default(IPEndPoint));
}
var t = FdbTuple.Unpack(packed);
return(new IPEndPoint(t.Get <IPAddress>(0), t.Get <int>(1)));
}
);
var rules = new Dictionary <IPEndPoint, string>()
{
{ new IPEndPoint(IPAddress.Parse("172.16.12.34"), 6667), "block" },
{ new IPEndPoint(IPAddress.Parse("192.168.34.56"), 80), "pass" },
{ new IPEndPoint(IPAddress.Parse("192.168.34.56"), 443), "pass" }
};
using (var db = await OpenTestPartitionAsync())
{
var location = await GetCleanDirectory(db, "Collections", "Maps");
var map = new FdbMap <IPEndPoint, string>("Firewall", location.Partition.ByKey("Hosts"), keyEncoder, KeyValueEncoders.Values.StringEncoder);
// import all the rules
await db.WriteAsync((tr) =>
{
foreach (var rule in rules)
{
map.Set(tr, rule.Key, rule.Value);
}
}, this.Cancellation);
#if DEBUG
await DumpSubspace(db, location);
#endif
// test the rules
using (var tr = db.BeginTransaction(this.Cancellation))
{
var value = await map.GetAsync(tr, new IPEndPoint(IPAddress.Parse("172.16.12.34"), 6667));
Assert.That(value, Is.EqualTo("block"));
value = await map.GetAsync(tr, new IPEndPoint(IPAddress.Parse("192.168.34.56"), 443));
Assert.That(value, Is.EqualTo("pass"));
var baz = new IPEndPoint(IPAddress.Parse("172.16.12.34"), 80);
Assert.That(async() => await map.GetAsync(tr, baz), Throws.InstanceOf <KeyNotFoundException>());
var opt = await map.TryGetAsync(tr, baz);
Assert.That(opt.HasValue, Is.False);
}
}
}
public async Task Test_Range_Except()
{
int K = 3;
int N = 100;
using (var db = await OpenTestPartitionAsync())
{
// get a clean new directory
var location = await GetCleanDirectory(db, "Queries", "Except");
// create K lists
var lists = Enumerable.Range(0, K).Select(i => location.Partition.ByKey(i)).ToArray();
// lists[0] contains all multiples of 1
// lists[1] contains all multiples of 2
// lists[k-1] contains all multiples of K
// more generally: lists[k][i] = (..., Intersect, k, i * (k + 1)) = (k, i)
var series = Enumerable.Range(1, K).Select(k => Enumerable.Range(1, N).Select(x => k * x).ToArray()).ToArray();
//foreach(var serie in series)
//{
// Console.WriteLine(String.Join(", ", serie));
//}
for (int k = 0; k < K; k++)
{
//Console.WriteLine("> k = " + k);
using (var tr = db.BeginTransaction(this.Cancellation))
{
for (int i = 0; i < N; i++)
{
var key = lists[k].Keys.Encode(series[k][i]);
var value = FdbTuple.EncodeKey(k, i);
//Console.WriteLine("> " + key + " = " + value);
tr.Set(key, value);
}
await tr.CommitAsync();
}
}
// Intersect all lists together should produce all integers that are prime numbers
IEnumerable <int> xs = series[0];
for (int i = 1; i < K; i++)
{
xs = xs.Except(series[i]);
}
var expected = xs.ToArray();
Log("Expected: {0}", String.Join(", ", expected));
using (var tr = db.BeginTransaction(this.Cancellation))
{
var merge = tr.Except(
lists.Select(list => FdbKeySelectorPair.Create(list.Keys.ToRange())),
kvp => location.Keys.DecodeLast <int>(kvp.Key)
);
Assert.That(merge, Is.Not.Null);
Assert.That(merge, Is.InstanceOf <FdbExceptIterator <KeyValuePair <Slice, Slice>, int, KeyValuePair <Slice, Slice> > >());
var results = await merge.ToListAsync();
Assert.That(results, Is.Not.Null);
Assert.That(results.Count, Is.EqualTo(expected.Length));
for (int i = 0; i < results.Count; i++)
{
Assert.That(location.Keys.DecodeLast <int>(results[i].Key), Is.EqualTo(expected[i]));
}
}
}
}
public Slice EncodeValue(T key)
{
return(FdbTuple.EncodeKey(key));
}