public virtual (bool, string TopicArn) Validate(string topicArn)
{
//List topics does not work across accounts - GetTopicAttributesRequest works within the region
//List Topics is rate limited to 30 ListTopic transactions per second, and can be rate limited
//So where we can, we validate a topic using GetTopicAttributesRequest
bool exists = false;
try
{
var topicAttributes = _snsClient.GetTopicAttributesAsync(
new GetTopicAttributesRequest(topicArn)
).GetAwaiter().GetResult();
exists = ((topicAttributes.HttpStatusCode == HttpStatusCode.OK) && (topicAttributes.Attributes["TopicArn"] == topicArn));
}
catch (InternalErrorException)
{
exists = false;
}
catch (NotFoundException)
{
exists = false;
}
catch (AuthorizationErrorException)
{
exists = false;
}
return(exists, topicArn);
}
private bool ValidateTopicByArn(string topicArn)
{
using (var snsClient = new AmazonSimpleNotificationServiceClient(_awsConnection.Credentials, _awsConnection.Region))
{
var response = snsClient.GetTopicAttributesAsync(new GetTopicAttributesRequest(topicArn))
.GetAwaiter()
.GetResult();
return((response.HttpStatusCode == HttpStatusCode.OK) && (response.Attributes["TopicArn"] == topicArn));
}
}
public async Task GetAWSTopics(AWSCredentials credentials)
{
var client = new AmazonSimpleNotificationServiceClient(credentials.AccessKey, credentials.SecretKey, credentials.Region);
var request = new ListTopicsRequest();
var response = new ListTopicsResponse();
do
{
response = await client.ListTopicsAsync(request);
foreach (var topic in response.Topics)
{
Console.WriteLine("Topic: {0}", topic.TopicArn);
await SendAWSNotification(credentials, topic.TopicArn, String.Format("Message from topic: {0}", topic.TopicArn));
var subs = await client.ListSubscriptionsByTopicAsync(
new ListSubscriptionsByTopicRequest
{
TopicArn = topic.TopicArn
});
var ss = subs.Subscriptions;
if (ss.Any())
{
Console.WriteLine(" Subscriptions:");
foreach (var sub in ss)
{
Console.WriteLine(" {0}", sub.SubscriptionArn);
}
}
var attrs = await client.GetTopicAttributesAsync(
new GetTopicAttributesRequest
{
TopicArn = topic.TopicArn
});
if (attrs.Attributes.Any())
{
Console.WriteLine(" Attributes:");
foreach (var attr in attrs.Attributes)
{
Console.WriteLine(" {0} = {1}", attr.Key, attr.Value);
}
}
Console.WriteLine();
}
request.NextToken = response.NextToken;
} while (!string.IsNullOrEmpty(response.NextToken));
}
public async Task <IActionResult> Get()
{
var topicList = new List <Dictionary <string, string> >();
Dictionary <string, string> dictAttributes = null;
using (_SnsClient = new AmazonSimpleNotificationServiceClient(_AwsCredentials, RegionEndpoint.USEast2))
{
try
{
_SnsRequest = new ListTopicsRequest();
do
{
_SnsResponse = await _SnsClient.ListTopicsAsync(_SnsRequest);
foreach (var topic in _SnsResponse.Topics)
{
// Get topic attributes
var topicAttributes = await _SnsClient.GetTopicAttributesAsync(request : new GetTopicAttributesRequest
{
TopicArn = topic.TopicArn
});
// this is see attributes of topic
if (topicAttributes.Attributes.Count > 0)
{
dictAttributes = new Dictionary <string, string>();
foreach (var topicAttribute in topicAttributes.Attributes)
{
dictAttributes.Add(topicAttribute.Key, topicAttribute.Value.ToString());
}
topicList.Add(dictAttributes);
}
}
_SnsRequest.NextToken = _SnsResponse.NextToken;
} while (_SnsResponse.NextToken != null);
}
catch (AmazonSimpleNotificationServiceException ex)
{
return(Content(HandleSNSError(ex)));
}
}
return(Ok(JsonConvert.SerializeObject(topicList)));
}
