amazon web services如何使用java lambda函数创建ec2实例？

Question

我能够在Eclipse中从本地机器使用Java创建EC2实例。 我面临的问题是，我无法找到使用Java Lambda函数创建EC2实例的方法。 谁能帮帮我吗

我正在使用的lambda函数：-

package com.ec2application.ec2application;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.CreateTagsRequest;
import com.amazonaws.services.ec2.model.Instance;
import com.amazonaws.services.ec2.model.InstanceNetworkInterfaceSpecification;
import com.amazonaws.services.ec2.model.RunInstancesRequest;
import com.amazonaws.services.ec2.model.RunInstancesResult;
import com.amazonaws.services.ec2.model.StartInstancesRequest;
import com.amazonaws.services.ec2.model.Tag;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

public class EC2UsingLambda implements RequestHandler<Object, String> 
{
    private static final AWSCredentials AWS_CREDENTIALS;

    static {
        // Your accesskey and secretkey
        AWS_CREDENTIALS = new BasicAWSCredentials(
                "myid",
                "key"
        );
    }


    public String handleRequest(Object input, Context context) 
    {
        context.getLogger().log("Input: " + input);

        // TODO: implement your handler
        // Set up the amazon ec2 client
        AmazonEC2 ec2Client = AmazonEC2ClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(AWS_CREDENTIALS))
                .withRegion(Regions.US_EAST_1)
                .build();

        // Launch an Amazon EC2 Instance
        RunInstancesRequest runInstancesRequest = new RunInstancesRequest().withImageId("ami-0080e4c5bc078760e")
                .withInstanceType("t2.micro") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
                .withMinCount(1)
                .withMaxCount(1)
                .withKeyName("priyajdm")
                .withNetworkInterfaces(new InstanceNetworkInterfaceSpecification()
                        .withAssociatePublicIpAddress(true)
                        .withDeviceIndex(0)
                        .withSubnetId("subnet-02ffd56c277")
                        .withGroups("sg-0e93be4d"));

        RunInstancesResult runInstancesResult = ec2Client.runInstances(runInstancesRequest);

        Instance instance = runInstancesResult.getReservation().getInstances().get(0);
        String instanceId = instance.getInstanceId();
        System.out.println("EC2 Instance Id: " + instanceId);

        // Setting up the tags for the instance
        CreateTagsRequest createTagsRequest = new CreateTagsRequest()
                .withResources(instance.getInstanceId())
                .withTags(new Tag("Name", "demo"));
        ec2Client.createTags(createTagsRequest);

        // Starting the Instance
        StartInstancesRequest startInstancesRequest = new StartInstancesRequest().withInstanceIds(instanceId);

        ec2Client.startInstances(startInstancesRequest);
        return "EC2 Instance created";
    }

}

这是我使用的代码：- 这就是我的错误：-

[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/Users/priyj_kumar/workspace/EC2Application/src/main/java/com/ec2application/ec2application/EC2UsingLambda.java:[16,45] package com.amazonaws.services.lambda.runtime does not exist
[ERROR] /C:/Users/priyj_kumar/workspace/EC2Application/src/main/java/com/ec2application/ec2application/EC2UsingLambda.java:[17,45] package com.amazonaws.services.lambda.runtime does not exist
[ERROR] /C:/Users/priyj_kumar/workspace/EC2Application/src/main/java/com/ec2application/ec2application/EC2UsingLambda.java:[19,40] cannot find symbol
  symbol: class RequestHandler
[ERROR] /C:/Users/priyj_kumar/workspace/EC2Application/src/main/java/com/ec2application/ec2application/EC2UsingLambda.java:[32,47] cannot find symbol
  symbol:   class Context
  location: class com.ec2application.ec2application.EC2UsingLambda
[INFO] 4 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

Answer 1

可以在Lambda函数中封装调用给定服务的Java API调用。我们已经写了一篇文章，向您展示了如何创建一个Lambda函数，通过使用给定的服务客户机来调用AWS服务操作

然后在AWS步骤中使用Lambda函数来创建工作流。如果遵循本文档，您将看到从可以包装在Lambda函数中的代码成功调用AWS服务操作的模式。见：

https://github.com/awsdocs/aws-doc-sdk-examples/tree/master/javav2/usecases/creating_serverless%20workflows

在您的用例中，可以在Lambda函数中使用EC2服务客户端