Amazon AWS SDK Betriebsanweisung PDF herunterladen (Seite 62)

SpotInstancesResult.SpotInstanceRequest)

{

describeRequest.SpotInstanceRequestId.Add(spotInstanceRequest.SpotIn

stanceRequestId);

10 }

1 // Create a variable that will track whether there are any

// requests still in the open state.

bool anyOpen;

5 // Create a list to store any instances that were activated.

List<String> instanceIds = new List<String>();

{

10 // Initialize the anyOpen variable to false, which assumes there

// are no requests open unless we find one that is still open.

anyOpen = false;

instanceIds.Clear();

15 try

{

// Retrieve all of the requests we want to monitor.

DescribeSpotInstanceRequestsResponse describeResponse = ec2.De

scribeSpotInstanceRequests(describeRequest);

20 // Look through each request and determine if they are all in

// the active state.

foreach (SpotInstanceRequest spotInstanceRequest in de

scribeResponse.DescribeSpotInstanceRequestsResult.SpotInstanceRequest)

{

// If the state is open, it hasn't changed since we attempted

25 // to request it. There is the potential for it to transition

// almost immediately to closed or canceled, so we compare

// against open instead of active.

if (spotInstanceRequest.State.Equals("open", StringComparis

on.InvariantCulture))

{

30 anyOpen = true;

break;

}

else if (spotInstanceRequest.State.Equals("active", StringCom

parison.InvariantCulture))

{

35 // Add the instance id to the list we will

// eventually terminate.

instanceIds.Add(spotInstanceRequest.InstanceId);

}

40 }

catch (AmazonEC2Exception e)

{

// If we have an exception, ensure we don't break out of

// the loop. This prevents the scenario where there was

45 // blip on the wire.

anyOpen = true;

Version v2.0.0

AWS SDK for .NET Developer Guide

Step 4: Determining the State of Your Spot Request

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 70 71

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