public async Task <CloudFormationResponse> FunctionHandler(SnapStackRequest input, ILambdaContext context)
{
if (string.Equals("Delete", input.RequestType, StringComparison.OrdinalIgnoreCase))
{
return(await CloudFormationResponse.CompleteCloudFormationResponse(null, input, context));
}
return(await SnapshotStackResources(input, context));
}
private async Task <CloudFormationResponse> SnapshotStackResources(SnapStackRequest input, ILambdaContext context)
{
try
{
var stackName = input.StackId.Split('/')[1];
var results = await GetStackResource(input, stackName);
await StoreResultsInDynamo(results, input.ResourceProperties, stackName);
return(await CloudFormationResponse.CompleteCloudFormationResponse(null, input, context));
}
catch (Exception ex)
{
return(await CloudFormationResponse.CompleteCloudFormationResponse(ex, input, context));
}
}
private async Task <string> GetStackResource(SnapStackRequest input, string stackName)
{
var cfClient = new AmazonCloudFormationClient(RegionEndpoint.EUWest1);
//TODO: Paginate
var request = new ListStackResourcesRequest
{
StackName = stackName
};
var json = new JObject();
var resourceList = await cfClient.ListStackResourcesAsync(request);
foreach (var resource in resourceList.StackResourceSummaries)
{
json.Add($"{resource.ResourceType}_{resource.LogicalResourceId}", resource.PhysicalResourceId);
}
return(json.ToString(Formatting.Indented));
}