/// <summary>
/// Retrieves a list of prices for the instance type received,
/// respecting the history size parameter.
/// </summary>
/// <param name="instanceTypes">Type (T2.Medium, C4.XLarge...)</param>
/// <param name="historySize">Number of prices</param>
/// <returns>List of object containing Price, Timestamp and Description</returns>
public List <EC2SpotPrice> GetSpotRequestPrices(String instanceType, String AZ, String productDescription = null, int historySize = 1)
{
// Building Requests
var spotPriceRequest = new DescribeSpotPriceHistoryRequest();
spotPriceRequest.MaxResults = historySize;
spotPriceRequest.InstanceTypes = new List <String>()
{
instanceType
};
spotPriceRequest.AvailabilityZone = AZ;
spotPriceRequest.ProductDescriptions = new List <String>()
{
productDescription
};
// Retrieving Spot Prices
var response = EC2client.DescribeSpotPriceHistory(spotPriceRequest);
//response.SpotPriceHistory.Select(t => t.ProductDescription.;
return(response.SpotPriceHistory.Select(t => new EC2SpotPrice()
{
price = float.Parse(t.Price),
productDescription = t.ProductDescription.Value.Replace(".", ","),
timestamp = t.Timestamp
}).ToList());
}
public override void Invoke(AWSCredentials creds, RegionEndpoint region, int maxItems)
{
AmazonEC2Config config = new AmazonEC2Config();
config.RegionEndpoint = region;
ConfigureClient(config);
AmazonEC2Client client = new AmazonEC2Client(creds, config);
DescribeSpotPriceHistoryResponse resp = new DescribeSpotPriceHistoryResponse();
do
{
DescribeSpotPriceHistoryRequest req = new DescribeSpotPriceHistoryRequest
{
NextToken = resp.NextToken
,
MaxResults = maxItems
};
resp = client.DescribeSpotPriceHistory(req);
CheckError(resp.HttpStatusCode, "200");
foreach (var obj in resp.SpotPriceHistory)
{
AddObject(obj);
}
}while (!string.IsNullOrEmpty(resp.NextToken));
}
/// <summary>
/// Query the market for product spot pricing.
/// </summary>
protected override void AmazonExecute()
{
var request = new DescribeSpotPriceHistoryRequest
{
InstanceType = new List <string> {
this.InstanceType.Get(this.ActivityContext)
},
ProductDescription = new List <string> {
this.ProductDescription.Get(this.ActivityContext)
},
StartTime = DateTime.Now.ToAmazonDateTime(),
};
try
{
var response = EC2Client.DescribeSpotPriceHistory(request);
// Get the first price in the price history array
decimal price = decimal.Parse(response.DescribeSpotPriceHistoryResult.SpotPriceHistory[0].SpotPrice);
this.CurrentSpotPrice.Set(this.ActivityContext, price);
}
catch (EndpointNotFoundException ex)
{
LogBuildMessage(ex.Message);
}
}
public decimal load_spot_price(string instance_type, string az)
{
try
{
var client = get_client();
var query_req = new DescribeSpotPriceHistoryRequest();
query_req.InstanceTypes.Add(instance_type);
query_req.AvailabilityZone = region + az;
query_req.ProductDescriptions.Add("Linux/UNIX");
query_req.StartTime = DateTime.Now;
query_req.MaxResults = 1;
var query_res = client.DescribeSpotPriceHistory(query_req);
if (query_res.SpotPriceHistory.Count == 0)
{
write_log(region + az + " にはスポットインスタンスがありません。");
return(10000);
}
write_log(region + az + " のスポットインスタンスの現在の値段 " + query_res.SpotPriceHistory[0].Price);
return(Convert.ToDecimal(query_res.SpotPriceHistory[0].Price));
}
catch (Exception ex)
{
write_log("ERROR: " + ex.ToString());
return(10000);
}
}
/// <summary>
/// Query EC2 for the spot pricing history for a specified instance type.
/// </summary>
protected override void AmazonExecute()
{
var request = new DescribeSpotPriceHistoryRequest
{
InstanceType = new List <string> {
this.InstanceType.Get(this.ActivityContext)
},
StartTime = this.StartTime.Get(this.ActivityContext).ToAmazonDateTime(),
EndTime = this.EndTime.Get(this.ActivityContext).ToAmazonDateTime()
};
try
{
var response = EC2Client.DescribeSpotPriceHistory(request);
this.PriceHistory.Set(this.ActivityContext, response.DescribeSpotPriceHistoryResult.SpotPriceHistory);
}
catch (EndpointNotFoundException ex)
{
this.LogBuildMessage(ex.Message);
}
}
