public async Task BasicTest()
{
IDbStore columnFamilyDbStore = this.rocksDbStoreProvider.GetColumnStoreFamily("test");
string key = "key1";
string value = "value1";
byte[] keyBytes = key.ToBytes();
byte[] valueBytes = value.ToBytes();
await columnFamilyDbStore.Put(keyBytes, valueBytes);
Option <byte[]> returnedValueBytesOption = await columnFamilyDbStore.Get(keyBytes);
Assert.True(returnedValueBytesOption.HasValue);
byte[] returnedValueBytes = returnedValueBytesOption.OrDefault();
Assert.True(valueBytes.SequenceEqual(returnedValueBytes));
Assert.Equal(value, returnedValueBytes.FromBytes());
Assert.True(await columnFamilyDbStore.Contains(keyBytes));
Assert.False(await columnFamilyDbStore.Contains("key2".ToBytes()));
await columnFamilyDbStore.Remove(keyBytes);
returnedValueBytesOption = await columnFamilyDbStore.Get(keyBytes);
Assert.False(returnedValueBytesOption.HasValue);
}
public async Task MessageCountTest()
{
using (IDbStore columnFamilyDbStore = this.rocksDbStoreProvider.GetDbStore("test"))
{
Assert.Equal(0ul, await columnFamilyDbStore.Count());
for (int i = 0; i < 10; i++)
{
string key = $"key{i}";
string value = "$value{i}";
await columnFamilyDbStore.Put(key.ToBytes(), value.ToBytes());
}
Assert.Equal(10ul, await columnFamilyDbStore.Count());
}
using (IDbStore columnFamilyDbStore = this.rocksDbStoreProvider.GetDbStore("test"))
{
Assert.Equal(10ul, await columnFamilyDbStore.Count());
for (int i = 0; i < 10; i++)
{
string key = $"key{i}";
await columnFamilyDbStore.Remove(key.ToBytes());
}
Assert.Equal(0ul, await columnFamilyDbStore.Count());
}
}
public async Task SpaceCheckViolationsTest()
{
Option <long> maxStorageBytes = Option.Some(90L);
IStorageSpaceChecker checker = new MemorySpaceChecker(() => 0L);
checker.SetMaxSizeBytes(maxStorageBytes);
InMemoryDbStoreProvider storeProvider = new InMemoryDbStoreProvider(Option.Some(checker));
string store1Name = "store1";
IDbStore store1 = storeProvider.GetDbStore(store1Name);
string store2Name = "store2";
IDbStore store2 = storeProvider.GetDbStore(store2Name);
byte[] message1 = new byte[10];
byte[] message2 = new byte[20];
await store1.Put(message1, message1);
await store2.Put(message2, message2);
// Current sizes -
// store1 -> (message1 * 2)
// store2 -> (message2 * 2)
// Aggregated size is less than limit, adding another item should succeed.
byte[] message3 = new byte[30];
await store1.Put(message3, message3, CancellationToken.None);
// Current sizes -
// store1 -> (message1 * 2) + (message3 * 2)
// store2 -> (message2 * 2)
// Aggregated size is greater than limit, adding another item should fail.
byte[] message4 = new byte[40];
await Assert.ThrowsAsync <StorageFullException>(() => store2.Put(message4, message4));
await Assert.ThrowsAsync <StorageFullException>(() => store2.Put(message4, message4, CancellationToken.None));
// Remove store2. The usage of store1 alone should be less than the max limit.
// Current sizes -
// store1 -> (message1 * 2) + (message3 * 2)
// store2 -> X
// Aggregated size is less than limit, adding another item should succeed.
storeProvider.RemoveDbStore(store2Name);
await store1.Put(message4, message4);
// Current sizes -
// store1 -> (message1 * 2) + (message3 * 2) + (message4 * 2)
// store2 -> X
// Aggregated size is greater than limit, adding another item should fail.
byte[] message5 = new byte[45];
await Assert.ThrowsAsync <StorageFullException>(() => store1.Put(message5, message5));
// Re-add store2.
store2 = storeProvider.GetDbStore(store2Name);
await store1.Remove(message4);
// Current sizes -
// store1 -> (message1 * 2) + (message3 * 2)
// store2 -> X
// Aggregated size is less than limit, adding another item should succeed.
await store2.Put(message1, message1);
// Current sizes -
// store1 -> (message1 * 2) + (message3 * 2)
// store2 -> (message1 * 2)
// Aggregated size is greater than limit, adding another item should fail.
await Assert.ThrowsAsync <StorageFullException>(() => store2.Put(message5, message5));
// Remove an item from store1 and then try adding a smaller item to store2 which should succeed.
await store1.Remove(message3, CancellationToken.None);
// Current sizes -
// store1 -> (message1 * 2)
// store2 -> (message1 * 2)
// Aggregated size is less than limit, adding another item should succeed.
await store2.Put(message3, message3, CancellationToken.None);
// Current sizes -
// store1 -> (message1 * 2)
// store2 -> (message1 * 2) + (message3 * 2)
// Aggregated size is greater than limit, adding another item should fail.
await Assert.ThrowsAsync <StorageFullException>(() => store2.Put(message4, message4));
// Set max storage size to be greater than the current db size.
Option <long> newMaxStorageBytes = Option.Some((message1.Length * 2) * 2L + (message3.Length * 2) + 10);
checker.SetMaxSizeBytes(newMaxStorageBytes);
// Adding another item should now succeed after the limits have been increased.
await store1.Put(message4, message4);
// Adding a new item to store1 should fail.
// Current sizes -
// store1 -> (message1 * 2) + (message4 * 2)
// store2 -> (message1 * 2) + (message3 * 2)
// Aggregated size is greater than limit, adding another item should fail.
await Assert.ThrowsAsync <StorageFullException>(() => store1.Put(message5, message5));
// Updating the message4 item in store1 should succeed as the size difference between
// the existing and updated value is zero bytes which doesn't lead to the limit being breached.
await store1.Put(message4, message4);
}