private static void UnmarshallResult(XmlUnmarshallerContext context, GetMetricStatisticsResponse response)
{
int originalDepth = context.CurrentDepth;
int targetDepth = originalDepth + 1;
if (context.IsStartOfDocument)
targetDepth += 2;
while (context.ReadAtDepth(originalDepth))
{
if (context.IsStartElement || context.IsAttribute)
{
if (context.TestExpression("Datapoints/member", targetDepth))
{
var unmarshaller = DatapointUnmarshaller.Instance;
var item = unmarshaller.Unmarshall(context);
response.Datapoints.Add(item);
continue;
}
if (context.TestExpression("Label", targetDepth))
{
var unmarshaller = StringUnmarshaller.Instance;
response.Label = unmarshaller.Unmarshall(context);
continue;
}
}
}
return;
}
/// <summary>
/// Unmarshaller the response from the service to the response class.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public override AmazonWebServiceResponse Unmarshall(XmlUnmarshallerContext context)
{
GetMetricStatisticsResponse response = new GetMetricStatisticsResponse();
context.Read();
int targetDepth = context.CurrentDepth;
while (context.ReadAtDepth(targetDepth))
{
if (context.IsStartElement)
{
if(context.TestExpression("GetMetricStatisticsResult", 2))
{
UnmarshallResult(context, response);
continue;
}
if (context.TestExpression("ResponseMetadata", 2))
{
response.ResponseMetadata = ResponseMetadataUnmarshaller.Instance.Unmarshall(context);
}
}
}
return response;
}
private long AverageValue(GetMetricStatisticsResponse result)
{
var lastStat = result.Datapoints.OrderBy(dp => dp.Timestamp).FirstOrDefault();
if (lastStat == null)
return 0;
return Convert.ToInt64(lastStat.Average);
}
public override AmazonWebServiceResponse Unmarshall(XmlUnmarshallerContext context)
{
GetMetricStatisticsResponse response = new GetMetricStatisticsResponse();
while (context.Read())
{
if (context.IsStartElement)
{
if(context.TestExpression("GetMetricStatisticsResult", 2))
{
response.GetMetricStatisticsResult = GetMetricStatisticsResultUnmarshaller.GetInstance().Unmarshall(context);
continue;
}
if (context.TestExpression("ResponseMetadata", 2))
{
response.ResponseMetadata = ResponseMetadataUnmarshaller.GetInstance().Unmarshall(context);
}
}
}
return response;
}
private static void UnmarshallResult(XmlUnmarshallerContext context,GetMetricStatisticsResponse response)
{
int originalDepth = context.CurrentDepth;
int targetDepth = originalDepth + 1;
if (context.IsStartOfDocument)
targetDepth += 2;
while (context.Read())
{
if (context.IsStartElement || context.IsAttribute)
{
if (context.TestExpression("Label", targetDepth))
{
response.Label = StringUnmarshaller.GetInstance().Unmarshall(context);
continue;
}
if (context.TestExpression("Datapoints/member", targetDepth))
{
response.Datapoints.Add(DatapointUnmarshaller.GetInstance().Unmarshall(context));
continue;
}
}
else if (context.IsEndElement && context.CurrentDepth < originalDepth)
{
return;
}
}
return;
}
private long ConsumedValue(GetMetricStatisticsResponse result)
{
var lastStat = result.Datapoints.OrderBy(dp => dp.Timestamp).FirstOrDefault();
if (lastStat == null)
return 0;
// Based on AWS documentation, Average ConsumedCapacity need to be computed based on the Sum metric over the 1 min period
// For more information, visit http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/dynamo-metricscollected.html
return Convert.ToInt64(lastStat.Sum / 60);
}