Example usage for com.amazonaws.services.ec2 AmazonEC2 describeSpotPriceHistory

Introduction

In this page you can find the example usage for com.amazonaws.services.ec2 AmazonEC2 describeSpotPriceHistory.

Prototype

DescribeSpotPriceHistoryResult describeSpotPriceHistory(
        DescribeSpotPriceHistoryRequest describeSpotPriceHistoryRequest);

Source Link

Document

Describes the Spot price history.

Usage

From source file:imperial.modaclouds.monitoring.datacollectors.monitors.EC2SpotPriceMonitor.java

License:BSD License

@Override
public void run() {

    String accessKeyId = null;/*from www.jav  a2  s. c  om*/

    String secretKey = null;

    long startTime = 0;

    while (!spmt.isInterrupted()) {

        if (System.currentTimeMillis() - startTime > 10000) {
            spotInstanceVec = new ArrayList<SpotInstance>();

            for (String metric : getProvidedMetrics()) {
                try {
                    VM resource = new VM(Config.getInstance().getVmType(), Config.getInstance().getVmId());
                    if (dcAgent.shouldMonitor(resource, metric)) {

                        Map<String, String> parameters = dcAgent.getParameters(resource, metric);

                        String endpoint = null;
                        String productDes = null;
                        String instanceType = null;

                        accessKeyId = parameters.get("accessKey");
                        secretKey = parameters.get("secretKey");
                        endpoint = parameters.get("endPoint");
                        productDes = parameters.get("productDescription");
                        instanceType = parameters.get("productDescription");
                        period = Integer.valueOf(parameters.get("samplingTime")) * 1000;
                        samplingProb = Double.valueOf(parameters.get("samplingProbability"));

                        SpotInstance spotInstance = new SpotInstance();
                        spotInstance.productDes = new ArrayList<String>();
                        spotInstance.instanceType = new ArrayList<String>();

                        spotInstance.endpoint = endpoint;
                        spotInstance.productDes.add(productDes);
                        spotInstance.instanceType.add(instanceType);

                        spotInstanceVec.add(spotInstance);
                    }
                } catch (NumberFormatException | ConfigurationException e) {
                    e.printStackTrace();
                }
            }

            startTime = System.currentTimeMillis();
        }

        AWSCredentials credentials = new BasicAWSCredentials(accessKeyId, secretKey);
        AmazonEC2 ec2 = new AmazonEC2Client(credentials);

        //////

        boolean isSent = false;
        if (Math.random() < this.samplingProb) {
            isSent = true;
        }

        for (int i = 0; i < spotInstanceVec.size(); i++) {
            ec2.setEndpoint(spotInstanceVec.get(i).endpoint);

            DescribeSpotPriceHistoryRequest request = new DescribeSpotPriceHistoryRequest();

            request.setProductDescriptions(spotInstanceVec.get(i).productDes);
            request.setInstanceTypes(spotInstanceVec.get(i).instanceType);
            //request.setStartTime(startTime);
            //request.setMaxResults(maxResult);

            String nextToken = "";
            //do {
            request.withNextToken(nextToken);

            DescribeSpotPriceHistoryResult result = ec2.describeSpotPriceHistory(request);

            List<String> splitString = Arrays.asList(result.getSpotPriceHistory().get(0).toString().split(","));

            if (isSent) {
                for (String temp : splitString) {
                    if (temp.contains("SpotPrice")) {
                        temp = temp.replace("SpotPrice: ", "");
                        System.out.println(temp);
                        try {
                            logger.info("Sending datum: {} {} {}", temp, "SpotPrice", monitoredTarget);
                            dcAgent.send(
                                    new VM(Config.getInstance().getVmType(), Config.getInstance().getVmId()),
                                    "SpotPrice", temp);
                        } catch (Exception e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                }
            }
            //for (int j = 0; j < result.getSpotPriceHistory().size(); j++) {
            //System.out.println(result.getSpotPriceHistory().get(0));
            //break;
            //}

            //result = result.withNextToken(result.getNextToken());
            //nextToken = result.getNextToken();
            //} while(!nextToken.isEmpty());
        }
        try {
            Thread.sleep(period);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            break;
        }

    }
}

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