/// <summary>
/// Add an item to the store (or update it)
/// </summary>
/// <param name="key">The <see cref="StoreKey"/>.</param>
/// <param name="eTag">The <see cref="ValidatorValue"/>.</param>
/// <returns></returns>
public Task SetAsync(StoreKey key, ValidatorValue eTag)
{
// store the validator value
_store[key.ToString()] = eTag;
// save the key itself as well, with an easily searchable stringified key
_storeKeyStore[key.ToString()] = key;
return(Task.FromResult(0));
}
public async Task SetAsync(StoreKey key, ValidatorValue eTag)
{
if (!ShouldCacheValue(key.Values.FirstOrDefault()))
{
return;
}
if (_redis == null)
{
_logger.LogError("Cannot find Redis database to set the storekey");
return;
}
var db = _redis.GetDatabase();
var hashValues = new []
{
ETagKey, eTag.ETag.Value,
ETagTypeKey, eTag.ETag.ETagType.ToString(),
LastModifiedKey, eTag.LastModified.ToString("O", CultureInfo.InvariantCulture),
SetByRegistryKey, false.ToString(CultureInfo.InvariantCulture)
};
await db.ScriptEvaluateAsync(HmsetnxScript,
new RedisKey[] { key.ToString() },
Array.ConvertAll(hashValues, value => (RedisValue)value),
CommandFlags.FireAndForget);
}
public async Task <ValidatorValue> GetAsync(StoreKey key)
{
if (!ShouldCacheValue(key.Values.FirstOrDefault()))
{
return(null);
}
_logger.LogDebug("Checking Redis for key '{key}'", key.ToString());
if (_redis == null)
{
_logger.LogError("Cannot find Redis database to get the storekey");
return(null);
}
var db = _redis.GetDatabase();
var redisValues =
await db.HashGetAsync(key.ToString(), new RedisValue[] { ETagKey, ETagTypeKey, LastModifiedKey, SetByRegistryKey }, CommandFlags.PreferReplica);
if (redisValues.Length != 4 ||
redisValues[0].IsNullOrEmpty ||
redisValues[1].IsNullOrEmpty ||
redisValues[2].IsNullOrEmpty ||
redisValues[3].IsNullOrEmpty)
{
return(null);
}
var setByRegistry = bool.Parse(redisValues[3].ToString());
if (!setByRegistry)
{
return(null);
}
var eTag = redisValues[0].ToString();
var eTagType = Enum.Parse <ETagType>(redisValues[1].ToString(), true);
var lastModified = DateTimeOffset.ParseExact(
redisValues[2].ToString(),
"O",
CultureInfo.InvariantCulture);
return(new ValidatorValue(new ETag(eTagType, eTag), lastModified));
}
/// <summary>
/// Remove an item from the store
/// </summary>
/// <param name="key">The <see cref="StoreKey"/>.</param>
/// <returns></returns>
public Task <bool> RemoveAsync(StoreKey key)
{
_storeKeyStore.TryRemove(key.ToString(), out _);
return(Task.FromResult(_store.TryRemove(key.ToString(), out _)));
}
public Task <ValidatorValue> GetAsync(StoreKey key) => GetAsync(key.ToString());
public Task SetAsync(StoreKey key, ValidatorValue eTag) => SetAsync(key.ToString(), eTag);
