private void OnOptionsChange(CosmosCacheOptions options)
{
// Did we create our own internal client? If so, we need to dispose it.
if (this.initializedClient && this.cosmosClient != null)
{
// In case this becomes an issue with concurrent access to the client, we can see if ReaderWriterLockSlim can be leveraged.
this.cosmosClient.Dispose();
}
this.options = options;
// Force re-initialization on the next Connect
this.cosmosContainer = null;
}
/// <summary>
/// Initializes a new instance of the <see cref="CosmosCache"/> class.
/// </summary>
/// <param name="optionsAccessor">Options accessor.</param>
public CosmosCache(IOptions <CosmosCacheOptions> optionsAccessor)
{
if (optionsAccessor == null)
{
throw new ArgumentNullException(nameof(optionsAccessor));
}
if (string.IsNullOrEmpty(optionsAccessor.Value.DatabaseName))
{
throw new ArgumentNullException(nameof(optionsAccessor.Value.DatabaseName));
}
if (string.IsNullOrEmpty(optionsAccessor.Value.ContainerName))
{
throw new ArgumentNullException(nameof(optionsAccessor.Value.ContainerName));
}
if (optionsAccessor.Value.ClientBuilder == null && optionsAccessor.Value.CosmosClient == null)
{
throw new ArgumentNullException("You need to specify either a CosmosConfiguration or an existing CosmosClient in the CosmosCacheOptions.");
}
this.options = optionsAccessor.Value;
}
private static CosmosCacheSession BuildCosmosCacheSession(string key, byte[] content, DistributedCacheEntryOptions options, CosmosCacheOptions cosmosCacheOptions)
{
DateTimeOffset creationTime = DateTimeOffset.UtcNow;
DateTimeOffset?absoluteExpiration = CosmosCache.GetAbsoluteExpiration(creationTime, options);
long?timeToLive = CosmosCache.GetExpirationInSeconds(creationTime, absoluteExpiration, options);
bool hasSlidingExpiration = timeToLive.HasValue && options.SlidingExpiration.HasValue;
long?absoluteSlidingExpiration = null;
if (hasSlidingExpiration && absoluteExpiration.HasValue)
{
absoluteSlidingExpiration = absoluteExpiration.Value.ToUnixTimeSeconds();
}
return(new CosmosCacheSession()
{
SessionKey = key,
Content = content,
TimeToLive = timeToLive,
IsSlidingExpiration = hasSlidingExpiration,
AbsoluteSlidingExpiration = absoluteSlidingExpiration,
PartitionKeyAttribute = cosmosCacheOptions.ContainerPartitionKeyAttribute,
});
}
