private async Task <IEnumerable <IAzureUserAccountSubscriptionContext> > GetSubscriptionsFromCacheAsync(AzureUserAccount user)
{
var result = Enumerable.Empty <IAzureUserAccountSubscriptionContext>();
if (user != null)
{
result = _subscriptionCache.Get(user.UniqueId);
if (result == null)
{
result = await GetSubscriptionFromServiceAsync(user);
_subscriptionCache.UpdateCache(user.UniqueId, result);
}
}
result = result ?? Enumerable.Empty <IAzureUserAccountSubscriptionContext>();
return(result);
}
/// <summary>
/// Returns a list of Azure sql databases for given subscription
/// </summary>
private async Task <ServiceResponse <DatabaseInstanceInfo> > GetDatabaseForSubscriptionAsync(object notRequired,
IAzureUserAccountSubscriptionContext input, string serverName,
CancellationToken cancellationToken, CancellationToken internalCancellationToken)
{
ServiceResponse <DatabaseInstanceInfo> result = null;
bool shouldFilter = !string.IsNullOrEmpty(serverName);
try
{
string key = input.Subscription.SubscriptionId;
//when the data was coming from cache and no async mthod was called the parallel tasks running crashed so I had to call this line async to fix it
result = await GetFromCacheAsync(key);
if (result == null)
{
//this will only get the databases for the given server name
result = await GetDatabaseForSubscriptionFromServiceAsync(input, serverName, cancellationToken, internalCancellationToken);
}
else if (shouldFilter)
{
//we should filter the result because the cached data includes databases for all servers
result = new ServiceResponse <DatabaseInstanceInfo>(result.Data.Where(x => x.ServerInstanceInfo.FullyQualifiedDomainName == serverName),
result.Errors);
}
//only update the cache if server name is not passes so the result is not filtered. The cache data supposed to be the data for all server
if (!shouldFilter && !cancellationToken.IsCancellationRequested)
{
result = _cache.UpdateCache(key, result);
}
}
catch (Exception ex)
{
result = new ServiceResponse <DatabaseInstanceInfo>(ex);
}
return(result);
}