Java AmazonEC2.requestSpotInstances方法代碼示例

import com.amazonaws.services.ec2.AmazonEC2; //導入方法依賴的package包/類
public void createInstances(int count, double priceLimitDollars) {
	AmazonEC2 ec2 = new AmazonEC2Client(getAwsCredentials());
	ec2.setEndpoint(getOrCry("ec2endpoint"));

	log.info("Requesting " + count + " instances of type "
			+ getOrCry("ec2instancetype") + " with price limit of "
			+ priceLimitDollars + " US$");
	log.debug(startupScript);

	try {
		// our bid
		RequestSpotInstancesRequest runInstancesRequest = new RequestSpotInstancesRequest()
				.withSpotPrice(Double.toString(priceLimitDollars))
				.withInstanceCount(count).withType("persistent");

		// increase volume size
		// BlockDeviceMapping mapping = new BlockDeviceMapping()
		// .withDeviceName("/dev/sda1").withEbs(
		// new EbsBlockDevice().withVolumeSize(Integer
		// .parseInt(getOrCry("ec2disksize"))));

		// what we want
		LaunchSpecification workerSpec = new LaunchSpecification()
				.withInstanceType(getOrCry("ec2instancetype"))
				.withImageId(getOrCry("ec2ami"))
				.withKeyName(getOrCry("ec2keypair"))
				// .withBlockDeviceMappings(mapping)
				.withUserData(
						new String(Base64.encodeBase64(startupScript
								.getBytes())));

		runInstancesRequest.setLaunchSpecification(workerSpec);

		// place the request
		ec2.requestSpotInstances(runInstancesRequest);
		log.info("Request placed, now use 'monitor' to check how many instances are running. Use 'shutdown' to cancel the request and terminate the corresponding instances.");
	} catch (Exception e) {
		log.warn("Failed to start instances - ", e);
	}
}
 

import com.amazonaws.services.ec2.AmazonEC2; //導入方法依賴的package包/類
public static void main(String[] args) {
    String region = "us-east-1";

    AWSCredentials credentials = new BasicAWSCredentials(awsAccessKeyId, awsSecretAccessKey);

    AmazonEC2 api = AmazonEC2ClientBuilder.standard().withRegion(region)
            .withCredentials(new AWSStaticCredentialsProvider(credentials)).build();

    // no particular availability zone
    String availabilityZone = null;
    String instanceType = "t1.micro";
    String imageId = "ami-3cf8b154";
    List<String> securityGroups = Arrays.asList("webserver");
    String keyPair = "instancekey";

    String bootScript = Joiner.on("\n")
            .join(Arrays.asList("#!/bin/bash", "sudo apt-get update -qy", "sudo apt-get install -qy apache2"));
    int instanceCount = 50;
    String bidPrice = "0.001";

    SpotPlacement placement = new SpotPlacement().withAvailabilityZone(availabilityZone);
    LaunchSpecification launchSpec = new LaunchSpecification().withInstanceType(instanceType).withImageId(imageId)
            .withPlacement(placement).withSecurityGroups(securityGroups).withKeyName(keyPair)
            .withUserData(AmazonApiUtils.base64Encode(bootScript));
    RequestSpotInstancesRequest request = new RequestSpotInstancesRequest().withInstanceCount(instanceCount)
            .withType(SpotInstanceType.Persistent).withSpotPrice(bidPrice).withLaunchSpecification(launchSpec);
    RequestSpotInstancesResult result = api.requestSpotInstances(request);

    for (SpotInstanceRequest spotRequest : result.getSpotInstanceRequests()) {
        LOG.info("placed request: {}", spotRequest.getSpotInstanceRequestId());
    }
}
 

import com.amazonaws.services.ec2.AmazonEC2; //導入方法依賴的package包/類
@Override
public void execute(AmazonEC2 client, Pool pool, DelegateExecution execution) throws IOException {
    /* before sending a new request, we check to see if we already registered
       a launch group with the process ID, if yes, we don't re-send the request */
    final String businessKey = execution.getProcessBusinessKey();

    /* we timeout if requests have already been sent - the activity is being retried. */
    Optional<Object> alreadySent = Optional.fromNullable(
        execution.getVariable(ProcessVariables.SPOT_INSTANCE_REQUEST_IDS));

    if (alreadySent.isPresent()) {
        DescribeSpotInstanceRequestsRequest describeRequest = new DescribeSpotInstanceRequestsRequest()
            .withFilters(new Filter()
                .withName("launch-group").withValues(businessKey)
                .withName("state").withValues("open", "active"));

        Stopwatch stopwatch = new Stopwatch().start();
        while (stopwatch.elapsedTime(TimeUnit.MINUTES) < 2) {
            DescribeSpotInstanceRequestsResult result = client.describeSpotInstanceRequests(describeRequest);
            List<SpotInstanceRequest> pending = result.getSpotInstanceRequests();
            if (pending.size() > 0) {
                LOG.info("Not resending spot instance requests {} for businessKey: {}.", pending, businessKey);
                execution.setVariable(ProcessVariables.SPOT_INSTANCE_REQUEST_IDS,
                    collectSpotInstanceRequestIds(pending));
                return;
            }
            LOG.info("The describe call has not returned anything yet, waiting 20s and retrying.");
            Uninterruptibles.sleepUninterruptibly(20, TimeUnit.SECONDS);
        }
    }

    final RequestSpotInstancesRequest request = createSpotInstancesRequest(pool, execution);
    execution.setVariable(ProcessVariables.SPOT_REQUESTS_SENT, true);
    RequestSpotInstancesResult requestResult = client.requestSpotInstances(request);
    List<String> spotInstanceRequestIds = collectSpotInstanceRequestIds(requestResult.getSpotInstanceRequests());

    execution.setVariable(ProcessVariables.SPOT_INSTANCE_REQUEST_IDS, spotInstanceRequestIds);
}