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));
}
}
public static async Task <CloudFormationResponse> CompleteCloudFormationResponse(object data, CloudFormationRequest request, ILambdaContext context)
{
data = data ?? new JObject();
var responseBody = new CloudFormationResponse
{
Status = data is Exception ? "FAILED" : "SUCCESS",
Reason = "See the details in CloudWatch Log Stream: " + context.LogStreamName,
PhysicalResourceId = context.LogStreamName,
StackId = request.StackId,
RequestId = request.RequestId,
LogicalResourceId = request.LogicalResourceId,
Data = data is Exception ? new JObject(new JProperty("exception:", data.ToString())) : data
};
try
{
using (var client = new HttpClient())
{
var jsonContent = new StringContent(JsonConvert.SerializeObject(responseBody));
jsonContent.Headers.Remove("Content-Type");
var postResponse = await client.PutAsync(request.ResponseURL, jsonContent);
postResponse.EnsureSuccessStatusCode();
}
}
catch (Exception ex)
{
LambdaLogger.Log("Exception: " + ex);
responseBody.Status = "FAILED";
responseBody.Data = new JObject(new JProperty("exception:", ex.ToString()));
}
return(responseBody);
}
