public async Task RemoveFromStart(ITransaction tx, string key, int countToRemove = 1)
{
var metadata = await GetMetadataAsync(tx, key).ConfigureAwait(false);
var from = metadata.From;
var count = metadata.Count;
if (countToRemove > count)
{
throw new InvalidOperationException($"Trying to remove {countToRemove} entries from {_name} with only {count} messages");
}
for (var i = 0; i < countToRemove; i++)
{
var listKey = new ReliableListKey {
Key = key, Id = from
};
await _valueStore.TryRemoveAsync(tx, listKey).ConfigureAwait(false);
from++;
count--;
}
var updatedMetadata = new ReliableListMetaData {
From = from, Count = count
};
await UpdateMetadataAsync(tx, key, updatedMetadata).ConfigureAwait(false);
}
public async Task AddAsync(ITransaction tx, string key, TValue value)
{
var metadata = await GetMetadataAsync(tx, key).ConfigureAwait(false);
var index = metadata.From + metadata.Count;
var listKey = new ReliableListKey {
Key = key, Id = index
};
await _valueStore.SetAsync(tx, listKey, value).ConfigureAwait(false);
var updatedMetadata = new ReliableListMetaData {
From = metadata.From, Count = metadata.Count + 1
};
await UpdateMetadataAsync(tx, key, updatedMetadata).ConfigureAwait(false);
}
public async Task ClearAsync(ITransaction tx, string key)
{
var metadata = await GetMetadataAsync(tx, key).ConfigureAwait(false);
var from = metadata.From;
var count = metadata.Count;
for (var i = 0; i < count; i++)
{
var listKey = new ReliableListKey {
Key = key, Id = from + i
};
await _valueStore.TryRemoveAsync(tx, listKey).ConfigureAwait(false);
}
await UpdateMetadataAsync(tx, key, new ReliableListMetaData()).ConfigureAwait(false);
}
public async Task SetAsync(ITransaction tx, string key, int index, TValue value)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
var metadata = await GetMetadataAsync(tx, key).ConfigureAwait(false);
if (index >= metadata.Count)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
else
{
var listKey = new ReliableListKey {
Key = key, Id = index
};
await _valueStore.SetAsync(tx, listKey, value).ConfigureAwait(false);
}
}
public async Task <ConditionalValue <TValue> > TryGetAsync(ITransaction tx, string key, int index)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
var metadataValue = await TryGetMetadataAsync(tx, key).ConfigureAwait(false);
if (metadataValue.HasValue)
{
var listKey = new ReliableListKey {
Key = key, Id = index
};
return(await _valueStore.TryGetValueAsync(tx, listKey).ConfigureAwait(false));
}
else
{
return(new ConditionalValue <TValue>());
}
}
public async Task AddRangeAsync(ITransaction tx, string key, IEnumerable <TValue> values)
{
var metadata = await GetMetadataAsync(tx, key).ConfigureAwait(false);
var from = metadata.From;
var count = metadata.Count;
foreach (var value in values)
{
var listKey = new ReliableListKey {
Key = key, Id = from + count
};
await _valueStore.SetAsync(tx, listKey, value).ConfigureAwait(false);
count++;
}
var updatedMetadata = new ReliableListMetaData {
From = from, Count = count
};
await UpdateMetadataAsync(tx, key, updatedMetadata).ConfigureAwait(false);
}
