Code examples for Amazon EC2 using Amazon SDKs

namespace EC2Actions;

public class HelloEc2
{
    /// <summary>
    /// HelloEc2 lists the existing security groups for the default users.
    /// </summary>
    /// <param name="args">Command line arguments</param>
    /// <returns>A Task object.</returns>
    static async Task Main(string[] args)
    {
        // Set up dependency injection for Amazon Elastic Compute Cloud (Amazon EC2).
        using var host = Microsoft.Extensions.Hosting.Host.CreateDefaultBuilder(args)
            .ConfigureServices((_, services) =>
                services.AddAWSService<IAmazonEC2>()
                .AddTransient<EC2Wrapper>()
            )
            .Build();

        // Now the client is available for injection.
        var ec2Client = host.Services.GetRequiredService<IAmazonEC2>();

        var request = new DescribeSecurityGroupsRequest
        {
            MaxResults = 10,
        };


        // Retrieve information about up to 10 Amazon EC2 security groups.
        var response = await ec2Client.DescribeSecurityGroupsAsync(request);

        // Now print the security groups returned by the call to
        // DescribeSecurityGroupsAsync.
        Console.WriteLine("Security Groups:");
        response.SecurityGroups.ForEach(group =>
        {
            Console.WriteLine($"Security group: {group.GroupName} ID: {group.GroupId}");
        });
    }
}

Code for the CMakeLists.txt CMake file.

# Set the minimum required version of CMake for this project.
cmake_minimum_required(VERSION 3.13)

# Set the AWS service components used by this project.
set(SERVICE_COMPONENTS ec2)

# Set this project's name.
project("hello_ec2")

# Set the C++ standard to use to build this target.
# At least C++ 11 is required for the AWS SDK for C++.
set(CMAKE_CXX_STANDARD 11)

# Use the MSVC variable to determine if this is a Windows build.
set(WINDOWS_BUILD ${MSVC})

if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK.
    string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all")
    list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH})
endif ()

# Find the AWS SDK for C++ package.
find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS})

if (WINDOWS_BUILD) 
     # Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging.

     # set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this
                                    # and set the proper subdirectory to the executables' location.

     AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR})
endif ()

add_executable(${PROJECT_NAME}
        hello_ec2.cpp)

target_link_libraries(${PROJECT_NAME}
        ${AWSSDK_LINK_LIBRARIES})

Code for the hello_ec2.cpp source file.

#include <aws/core/Aws.h>
#include <aws/ec2/EC2Client.h>
#include <aws/ec2/model/DescribeInstancesRequest.h>
#include <iomanip>
#include <iostream>

/*
 *  A "Hello EC2" starter application which initializes an Amazon Elastic Compute Cloud (Amazon EC2) client and describes
 *  the Amazon EC2 instances.
 *
 *  main function
 *
 *  Usage: 'hello_ec2'
 *
 */

int main(int argc, char **argv) {
    Aws::SDKOptions options;
    // Optionally change the log level for debugging.
//   options.loggingOptions.logLevel = Utils::Logging::LogLevel::Debug;
    Aws::InitAPI(options); // Should only be called once.
    int result = 0;
    {
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

        Aws::EC2::EC2Client ec2Client(clientConfig);
        Aws::EC2::Model::DescribeInstancesRequest request;
        bool header = false;
        bool done = false;
        while (!done) {
            auto outcome = ec2Client.DescribeInstances(request);
            if (outcome.IsSuccess()) {
                if (!header) {
                    std::cout << std::left <<
                              std::setw(48) << "Name" <<
                              std::setw(20) << "ID" <<
                              std::setw(25) << "Ami" <<
                              std::setw(15) << "Type" <<
                              std::setw(15) << "State" <<
                              std::setw(15) << "Monitoring" << std::endl;
                    header = true;
                }

                const std::vector<Aws::EC2::Model::Reservation> &reservations =
                        outcome.GetResult().GetReservations();

                for (const auto &reservation: reservations) {
                    const std::vector<Aws::EC2::Model::Instance> &instances =
                            reservation.GetInstances();
                    for (const auto &instance: instances) {
                        Aws::String instanceStateString =
                                Aws::EC2::Model::InstanceStateNameMapper::GetNameForInstanceStateName(
                                        instance.GetState().GetName());

                        Aws::String typeString =
                                Aws::EC2::Model::InstanceTypeMapper::GetNameForInstanceType(
                                        instance.GetInstanceType());

                        Aws::String monitorString =
                                Aws::EC2::Model::MonitoringStateMapper::GetNameForMonitoringState(
                                        instance.GetMonitoring().GetState());
                        Aws::String name = "Unknown";

                        const std::vector<Aws::EC2::Model::Tag> &tags = instance.GetTags();
                        auto nameIter = std::find_if(tags.cbegin(), tags.cend(),
                                                     [](const Aws::EC2::Model::Tag &tag) {
                                                         return tag.GetKey() == "Name";
                                                     });
                        if (nameIter != tags.cend()) {
                            name = nameIter->GetValue();
                        }
                        std::cout <<
                                  std::setw(48) << name <<
                                  std::setw(20) << instance.GetInstanceId() <<
                                  std::setw(25) << instance.GetImageId() <<
                                  std::setw(15) << typeString <<
                                  std::setw(15) << instanceStateString <<
                                  std::setw(15) << monitorString << std::endl;
                    }
                }

                if (!outcome.GetResult().GetNextToken().empty()) {
                    request.SetNextToken(outcome.GetResult().GetNextToken());
                } else {
                    done = true;
                }
            } else {
                std::cerr << "Failed to describe EC2 instances:" <<
                          outcome.GetError().GetMessage() << std::endl;
                result = 1;
                break;
            }
        }
    }


    Aws::ShutdownAPI(options); // Should only be called once.
    return result;
}

     public static void describeEC2SecurityGroups(Ec2Client ec2, String groupId) {
         try {
             DescribeSecurityGroupsRequest request = DescribeSecurityGroupsRequest.builder()
                 .groupIds(groupId)
                 .build();

             DescribeSecurityGroupsResponse response = ec2.describeSecurityGroups(request);
             for(SecurityGroup group : response.securityGroups()) {
                System.out.printf(
                    "Found Security Group with id %s, " +
                            "vpc id %s " +
                            "and description %s",
                    group.groupId(),
                    group.vpcId(),
                    group.description());
             }

         } catch (Ec2Exception e) {
             System.err.println(e.awsErrorDetails().errorMessage());
             System.exit(1);
         }
    }

import { DescribeSecurityGroupsCommand } from "@aws-sdk/client-ec2";

import { client } from "./libs/client.js";

// Call DescribeSecurityGroups and display the result.
export const main = async () => {
  try {
    const { SecurityGroups } = await client.send(
      new DescribeSecurityGroupsCommand({})
    );

    const securityGroupList = SecurityGroups.slice(0, 9)
      .map((sg) => ` • ${sg.GroupId}: ${sg.GroupName}`)
      .join("\n");

    console.log(
      "Hello, Amazon EC2! Let's list up to 10 of your security groups:"
    );
    console.log(securityGroupList);
  } catch (err) {
    console.error(err);
  }
};

suspend fun describeEC2SecurityGroups(groupId: String) {

    val request = DescribeSecurityGroupsRequest {
        groupIds = listOf(groupId)
    }

    Ec2Client { region = "us-west-2" }.use { ec2 ->

        val response = ec2.describeSecurityGroups(request)
        response.securityGroups?.forEach { group ->
            println("Found Security Group with id ${group.groupId}, vpc id ${group.vpcId} and description ${group.description}")
        }
    }
}

import boto3

def hello_ec2(ec2_resource):
    """
    Use the AWS SDK for Python (Boto3) to create an Amazon Elastic Compute Cloud
    (Amazon EC2) resource and list the security groups in your account.
    This example uses the default settings specified in your shared credentials
    and config files.

    :param ec2_resource: A Boto3 EC2 ServiceResource object. This object is a high-level
                         resource that wraps the low-level EC2 service API.
    """
    print("Hello, Amazon EC2! Let's list up to 10 of your security groups:")
    for sg in ec2_resource.security_groups.limit(10):
        print(f"\t{sg.id}: {sg.group_name}")

if __name__ == '__main__':
    hello_ec2(boto3.resource('ec2'))