public void AddressCacheCanRetrieveExisting()
{
const string CollectionName = "DummyCollection";
var dataFolder = new DataFolder(TestBase.CreateTestDir(this));
string dbPath = Path.Combine(dataFolder.RootPath, CollectionName);
var database = new LiteDatabase(new ConnectionString()
{
Filename = dbPath, Upgrade = true
});
var cache = new AddressIndexRepository(database, new ExtendedLoggerFactory());
string address = "xyz";
var balanceChanges = new List <AddressBalanceChange>();
balanceChanges.Add(new AddressBalanceChange()
{
BalanceChangedHeight = 1, Deposited = true, Satoshi = 1
});
var data = new AddressIndexerData()
{
Address = address, BalanceChanges = balanceChanges
};
cache.AddOrUpdate(data.Address, data, data.BalanceChanges.Count + 1);
AddressIndexerData retrieved = cache.GetOrCreateAddress("xyz");
Assert.NotNull(retrieved);
Assert.Equal("xyz", retrieved.Address);
Assert.Equal(1, retrieved.BalanceChanges.First().BalanceChangedHeight);
Assert.True(retrieved.BalanceChanges.First().Deposited);
Assert.Equal(1, retrieved.BalanceChanges.First().Satoshi);
}
public void AddressCacheEvicts()
{
const string CollectionName = "AddrData";
var dataFolder = new DataFolder(TestBase.CreateTestDir(this));
string dbPath = Path.Combine(dataFolder.RootPath, CollectionName);
FileMode fileMode = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? FileMode.Exclusive : FileMode.Shared;
var database = new LiteDatabase(new ConnectionString()
{
Filename = dbPath, Mode = fileMode
});
var cache = new AddressIndexRepository(database, new ExtendedLoggerFactory(), 4);
// Recall, each index entry counts as 1 and each balance change associated with it is an additional 1.
Assert.Equal(0, database.GetCollection <AddressIndexerData>(CollectionName).Count());
string address1 = "xyz";
var balanceChanges1 = new List <AddressBalanceChange>();
balanceChanges1.Add(new AddressBalanceChange()
{
BalanceChangedHeight = 1, Deposited = true, Satoshi = 1
});
var data1 = new AddressIndexerData()
{
Address = address1, BalanceChanges = balanceChanges1
};
cache.AddOrUpdate(data1.Address, data1, data1.BalanceChanges.Count + 1);
Assert.Equal(0, database.GetCollection <AddressIndexerData>(CollectionName).Count());
string address2 = "abc";
var balanceChanges2 = new List <AddressBalanceChange>();
balanceChanges2.Add(new AddressBalanceChange()
{
BalanceChangedHeight = 2, Deposited = false, Satoshi = 2
});
cache.AddOrUpdate(address2, new AddressIndexerData()
{
Address = address2, BalanceChanges = balanceChanges2
}, balanceChanges2.Count + 1);
Assert.Equal(0, database.GetCollection <AddressIndexerData>(CollectionName).Count());
string address3 = "def";
var balanceChanges3 = new List <AddressBalanceChange>();
balanceChanges3.Add(new AddressBalanceChange()
{
BalanceChangedHeight = 3, Deposited = true, Satoshi = 3
});
cache.AddOrUpdate(address3, new AddressIndexerData()
{
Address = address3, BalanceChanges = balanceChanges3
}, balanceChanges3.Count + 1);
// One of the cache items should have been evicted, and will therefore be persisted on disk.
Assert.Equal(1, database.GetCollection <AddressIndexerData>(CollectionName).Count());
// The evicted item should be data1.
Assert.Equal(data1.Address, database.GetCollection <AddressIndexerData>(CollectionName).FindAll().First().Address);
Assert.Equal(1, database.GetCollection <AddressIndexerData>(CollectionName).FindAll().First().BalanceChanges.First().BalanceChangedHeight);
Assert.True(database.GetCollection <AddressIndexerData>(CollectionName).FindAll().First().BalanceChanges.First().Deposited);
Assert.Equal(1, database.GetCollection <AddressIndexerData>(CollectionName).FindAll().First().BalanceChanges.First().Satoshi);
// Check that the first address can still be retrieved, it should come from disk in this case.
AddressIndexerData retrieved = cache.GetOrCreateAddress("xyz");
Assert.NotNull(retrieved);
Assert.Equal("xyz", retrieved.Address);
Assert.Equal(1, retrieved.BalanceChanges.First().BalanceChangedHeight);
Assert.True(retrieved.BalanceChanges.First().Deposited);
Assert.Equal(1, retrieved.BalanceChanges.First().Satoshi);
}