private async Task <Application> CreateTopics(Application app)
{
string queueName = $"queue-{app.Name.Replace(" ", "")}-{app.Id}-subs";
AmazonSimpleNotificationServiceClient clientSNS = AwsFactory.CreateClient <AmazonSimpleNotificationServiceClient>();
//create topics and subscribe them
await app.Events.ToList().ForEachAsync(e =>
{
string topic_name = $"topic-{app.Name.Replace(" ", "")}-event-{e.EventName}";
CreateTopicResponse topicResponse = clientSNS.CreateTopicAsync(new CreateTopicRequest(topic_name)).Result;
if (topicResponse.HttpStatusCode != System.Net.HttpStatusCode.OK)
{
throw new Exception($"Error creating topic {topic_name}");
}
e.TopicArn = topicResponse.TopicArn;
});
return(app);
}
async Task ConfigureLambdaWithQueueAsync(string queueName)
{
string queueArn = null;
AmazonSQSClient sqsClient = AwsFactory.CreateClient <AmazonSQSClient>();
GetQueueUrlRequest queueUrlReq = new GetQueueUrlRequest();
queueUrlReq.QueueName = queueName;
GetQueueUrlResponse getQueueUrlResp = await sqsClient.GetQueueUrlAsync(queueUrlReq);
GetQueueAttributesRequest queueAttribReq = new GetQueueAttributesRequest();
queueAttribReq.AttributeNames.Add(QueueAttributeName.QueueArn);
queueAttribReq.QueueUrl = getQueueUrlResp.QueueUrl;
var queueAttribResp = await sqsClient.GetQueueAttributesAsync(queueAttribReq);
queueArn = queueAttribResp.QueueARN;
AmazonLambdaClient lambdaClient = AwsFactory.CreateClient <AmazonLambdaClient>();
CreateEventSourceMappingRequest eventMappingReq = new CreateEventSourceMappingRequest();
eventMappingReq.FunctionName = "WebhookDispatcher";
eventMappingReq.BatchSize = 10;
eventMappingReq.Enabled = true;
eventMappingReq.EventSourceArn = queueArn;
await lambdaClient.CreateEventSourceMappingAsync(eventMappingReq);
}
/// <summary>
/// A simple function that takes a string and does a ToUpper
/// </summary>
/// <param name="input"></param>
/// <param name="context"></param>
/// <returns></returns>
public APIGatewayProxyResponse FunctionHandler(APIGatewayProxyRequest request, ILambdaContext context)
{
context.Logger.Log("Starting Minimum Get call");
using (AwsFactory factory = new AwsFactory(context.Logger))
{
string userId = request.PathParameters["userId"];
string firstName = request.PathParameters["firstName"];
context.Logger.LogLine($"userId=\"{userId}\"");
context.Logger.LogLine($"firstName=\"{firstName}\"");
using (GetMinimum getMinimum = new GetMinimum(factory))
{
string jsonResponse = getMinimum.Retrieve(userId, firstName);
context.Logger.LogLine($"Response: {jsonResponse}");
APIGatewayProxyResponse response = new APIGatewayProxyResponse()
{
Body = jsonResponse,
StatusCode = 200
};
return(response);
}
}
}
/// <summary>
/// A simple function that takes a string and does a ToUpper
/// </summary>
/// <param name="input"></param>
/// <param name="context"></param>
/// <returns></returns>
public APIGatewayProxyResponse FunctionHandler(APIGatewayProxyRequest request, ILambdaContext context)
{
context.Logger.Log("Starting Weight Get call");
using (AwsFactory factory = new AwsFactory(context.Logger))
{
string userId = request.PathParameters["userId"];
string firstName = request.PathParameters["firstName"];
string weightDateString = request.PathParameters["weightDate"];
context.Logger.LogLine($"userId=\"{userId}\"");
context.Logger.LogLine($"firstName=\"{firstName}\"");
context.Logger.LogLine($"weightDate=\"{weightDateString}\"");
DateTime weightDate = Convert.ToDateTime(weightDateString);
using (GetWeight getWeight = new GetWeight(factory))
{
string jsonResponse = getWeight.Retrieve(userId, firstName, weightDate);
context.Logger.LogLine($"Response: {jsonResponse}");
APIGatewayProxyResponse response = new APIGatewayProxyResponse()
{
Body = jsonResponse,
StatusCode = 200
};
return(response);
}
}
}
public async Task <string> NotifyAsync(string appId, string eventName, string message)
{
ValidateNotification(appId, eventName, message);
string notifyRequestId = Guid.NewGuid().ToString();
AmazonSimpleNotificationServiceClient clientSNS = AwsFactory.CreateClient <AmazonSimpleNotificationServiceClient>();
var app = await Repository.GetByIdAsync(appId);
Event targetEvent = app.Events.ToList().Where(e => e.EventName == eventName).FirstOrDefault();
var response = await clientSNS.PublishAsync(new PublishRequest
{
Message = JsonSerializer.Serialize <NotifyMessage>(new NotifyMessage
{
EventName = eventName,
ApplicationId = appId,
Payload = message,
NotifyRequestId = notifyRequestId
}),
TargetArn = targetEvent.TopicArn
});
await NotificationRequestRepository.CreateAsync(new NotificationRequest
{
ApplicationId = appId,
EventName = eventName,
Id = notifyRequestId,
Payload = message,
TopicArn = targetEvent.TopicArn,
Timestamp = DateTime.Now.ToUniversalTime()
});
return(response.MessageId);
}
async Task <CreateQueueResponse> CreateQueueAsync(string queueName, string SubscriptionId)
{
CreateQueueRequest deadLetterRequest = new CreateQueueRequest(string.Concat(queueName, "-deadletter"));
deadLetterRequest.Attributes = new Dictionary <string, string>();
deadLetterRequest.Attributes.Add(QueueAttributeName.ReceiveMessageWaitTimeSeconds, "20");
deadLetterRequest.Attributes.Add(QueueAttributeName.MessageRetentionPeriod, "864000");
string deadLetterArn = null;
AmazonSQSClient sqsClient = AwsFactory.CreateClient <AmazonSQSClient>();
var createResponse = await sqsClient.CreateQueueAsync(deadLetterRequest);
GetQueueAttributesRequest queueReq = new GetQueueAttributesRequest();
queueReq.QueueUrl = createResponse.QueueUrl;
queueReq.AttributeNames.Add(QueueAttributeName.All);
var queueAttribs = await sqsClient.GetQueueAttributesAsync(queueReq);
deadLetterArn = queueAttribs.QueueARN;
string redrivePolicy = $"{{\"deadLetterTargetArn\":\"{deadLetterArn}\",\"maxReceiveCount\":5}}";
CreateQueueRequest createQueueRequest = new CreateQueueRequest();
createQueueRequest.QueueName = queueName;
createQueueRequest.Attributes = new Dictionary <string, string>();
createQueueRequest.Attributes.Add(QueueAttributeName.RedrivePolicy, redrivePolicy);
createQueueRequest.Attributes.Add(QueueAttributeName.ReceiveMessageWaitTimeSeconds, "20");
//createQueueRequest.Attributes.Add("trigger-id", SubscriptionId);
CreateQueueResponse queueResponse = await sqsClient.CreateQueueAsync(createQueueRequest);
return(queueResponse);
}
/// <summary>
/// A simple function that takes a string and does a ToUpper
/// </summary>
/// <param name="input"></param>
/// <param name="context"></param>
/// <returns></returns>
public APIGatewayProxyResponse FunctionHandler(APIGatewayProxyRequest request, ILambdaContext context)
{
context.Logger.Log("Starting User Post call");
using (AwsFactory factory = new AwsFactory(context.Logger))
{
using (PostUser postUser = new PostUser(factory))
{
context.Logger.Log($"Request body: {request.Body}");
string jsonResponse = postUser.Save(request.Body);
context.Logger.LogLine($"Response: {jsonResponse}");
APIGatewayProxyResponse response = new APIGatewayProxyResponse()
{
Body = jsonResponse,
StatusCode = 200
};
return(response);
}
}
}
public void DeleteAllTopics()
{
AmazonSimpleNotificationServiceClient clientSNS = AwsFactory.CreateClient <AmazonSimpleNotificationServiceClient>();
AmazonSQSClient clientSQS = AwsFactory.CreateClient <AmazonSQSClient>();
AmazonLambdaClient lambdaClient = AwsFactory.CreateClient <AmazonLambdaClient>();
var topics = clientSNS.ListTopicsAsync();
// var subs = clientSNS.ListSubscriptionsAsync(new ListSubscriptionsRequest());
var filas = clientSQS.ListQueuesAsync("subs");
filas.Result.QueueUrls.ForEach(i =>
{
var deleted = clientSQS.DeleteQueueAsync(i);
if (deleted.Result.HttpStatusCode != HttpStatusCode.OK)
{
int x = 0;
}
});
string nextToken = "";
do
{
var subs = clientSNS.ListSubscriptionsAsync(new ListSubscriptionsRequest(nextToken));
subs.Result.Subscriptions.ForEach(i =>
{
var deleted = clientSNS.UnsubscribeAsync(i.SubscriptionArn);
});
nextToken = subs.Result.NextToken;
} while (!String.IsNullOrEmpty(nextToken));
var mapper = lambdaClient.ListEventSourceMappingsAsync(new Amazon.Lambda.Model.ListEventSourceMappingsRequest
{
FunctionName = "WebhookDispatcher"
});
mapper.Result.EventSourceMappings.ToList().ForEach(i =>
{
var result = lambdaClient.DeleteEventSourceMappingAsync(new Amazon.Lambda.Model.DeleteEventSourceMappingRequest()
{
UUID = i.UUID
});
if (result.Result.HttpStatusCode != HttpStatusCode.OK)
{
int x = 0;
}
});
topics.Result.Topics.ForEach(i =>
{
var deleted = clientSNS.DeleteTopicAsync(new DeleteTopicRequest()
{
TopicArn = i.TopicArn
});
});
}
public async Task <string> Create(Model.Subscription subscription)
{
subscription.Id = Guid.NewGuid().ToString();
string queueName = $"subs-{subscription.Id}";
//create queue
var queueResponse = await CreateQueueAsync(queueName, subscription.Id);
subscription.QueueUrl = queueResponse.QueueUrl;
//set lambda subs
await ConfigureLambdaWithQueueAsync(queueName);
//Get topicsARN
var app = await ApplicationRepository.GetByIdAsync(subscription.ApplicationId);
if (app != null)
{
//getting ARN
var events = from subEvent in subscription.Events
join appEvent in app.Events
on subEvent.EventName equals appEvent.EventName
select new Event
{
EventName = appEvent.EventName,
TopicArn = appEvent.TopicArn
};
await events.ToList().ForEachAsync(e =>
{
subscription.Events.RemoveAll(y => y.EventName == e.EventName);
subscription.Events.Add(e);
var sub = AwsFactory.CreateClient <AmazonSimpleNotificationServiceClient>()
.SubscribeQueueToTopicsAsync(
new List <string>()
{
e.TopicArn
},
AwsFactory.CreateClient <AmazonSQSClient>(),
queueResponse.QueueUrl);
sub.Result.ToList().ForEach(s =>
{
try
{
var setting = AwsFactory.CreateClient <AmazonSimpleNotificationServiceClient>().SetSubscriptionAttributesAsync(new SetSubscriptionAttributesRequest
{
AttributeName = "RawMessageDelivery",
AttributeValue = "true",
SubscriptionArn = sub.Result.FirstOrDefault().Value
});
}
catch (Exception)
{
throw new WebhookManagerException("Error setting Subscription Attribute");
}
}
);
});
await Repository.CreateAsync(subscription);
}
return(subscription.Id);
}