Hay más AWS SDK ejemplos disponibles en el GitHub repositorio de AWS Doc SDK Examples.
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Ejemplos de código para el EC2 uso de Amazon AWS SDKs
Los siguientes ejemplos de código muestran cómo utilizar Amazon Elastic Compute Cloud con un kit de desarrollo de AWS software (SDK).
Los conceptos básicos son ejemplos de código que muestran cómo realizar las operaciones esenciales dentro de un servicio.
Las acciones son extractos de código de programas más grandes y deben ejecutarse en contexto. Mientras las acciones muestran cómo llamar a las funciones de servicio individuales, es posible ver las acciones en contexto en los escenarios relacionados.
Los escenarios son ejemplos de código que muestran cómo llevar a cabo una tarea específica a través de llamadas a varias funciones dentro del servicio o combinado con otros servicios de AWS.
Introducción
Los siguientes ejemplos de código muestran cómo empezar a utilizar AmazonEC2.
- .NET
-
- AWS SDK for .NET
-
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}");
});
}
}
- C++
-
- SDKpara C++
-
Código para el CMakeLists CMake archivo.txt.
# 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 AND AWSSDK_INSTALL_AS_SHARED_LIBS)
# 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})
Código del archivo de origen hello_ec2.cpp .
#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) {
(void)argc;
(void)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) {
Aws::EC2::Model::DescribeInstancesOutcome 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;
}
- Java
-
- SDKpara Java 2.x
-
/**
* Asynchronously describes the security groups for the specified group ID.
*
* @param groupName the name of the security group to describe
* @return a {@link CompletableFuture} that represents the asynchronous operation
* of describing the security groups. The future will complete with a
* {@link DescribeSecurityGroupsResponse} object that contains the
* security group information.
*/
public CompletableFuture<String> describeSecurityGroupArnByNameAsync(String groupName) {
DescribeSecurityGroupsRequest request = DescribeSecurityGroupsRequest.builder()
.groupNames(groupName)
.build();
DescribeSecurityGroupsPublisher paginator = getAsyncClient().describeSecurityGroupsPaginator(request);
AtomicReference<String> groupIdRef = new AtomicReference<>();
return paginator.subscribe(response -> {
response.securityGroups().stream()
.filter(securityGroup -> securityGroup.groupName().equals(groupName))
.findFirst()
.ifPresent(securityGroup -> groupIdRef.set(securityGroup.groupId()));
}).thenApply(v -> {
String groupId = groupIdRef.get();
if (groupId == null) {
throw new RuntimeException("No security group found with the name: " + groupName);
}
return groupId;
}).exceptionally(ex -> {
logger.info("Failed to describe security group: " + ex.getMessage());
throw new RuntimeException("Failed to describe security group", ex);
});
}
- JavaScript
-
- SDKpara JavaScript (v3)
-
import { DescribeSecurityGroupsCommand, EC2Client } from "@aws-sdk/client-ec2";
// Call DescribeSecurityGroups and display the result.
export const main = async () => {
const client = new EC2Client();
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);
}
};
// Call function if run directly.
import { fileURLToPath } from "url";
if (process.argv[1] === fileURLToPath(import.meta.url)) {
main();
}
- Kotlin
-
- SDKpara Kotlin
-
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 ${group.description}")
}
}
}
- Python
-
- SDKpara Python (Boto3)
-
import boto3
def hello_ec2(ec2_resource):
"""
Use the AWS SDK for Python (Boto3) to create an Amazon Elastic Compute Cloud
(Amazon EC2) resource and list the security groups in your account.
This example uses the default settings specified in your shared credentials
and config files.
:param ec2_resource: A Boto3 EC2 ServiceResource object. This object is a high-level
resource that wraps the low-level EC2 service API.
"""
print("Hello, Amazon EC2! Let's list up to 10 of your security groups:")
for sg in ec2_resource.security_groups.limit(10):
print(f"\t{sg.id}: {sg.group_name}")
if __name__ == "__main__":
hello_ec2(boto3.resource("ec2"))
- Ruby
-
- SDKpara Ruby
-
require 'aws-sdk-ec2'
require 'logger'
# EC2Manager is a class responsible for managing EC2 operations
# such as listing all EC2 instances in the current AWS account.
class EC2Manager
def initialize(client)
@client = client
@logger = Logger.new($stdout)
end
# Lists and prints all EC2 instances in the current AWS account.
def list_instances
@logger.info('Listing instances')
instances = fetch_instances
if instances.empty?
@logger.info('You have no instances')
else
print_instances(instances)
end
end
private
# Fetches all EC2 instances using pagination.
#
# @return [Array<Aws::EC2::Types::Instance>] List of EC2 instances.
def fetch_instances
paginator = @client.describe_instances
instances = []
paginator.each_page do |page|
page.reservations.each do |reservation|
reservation.instances.each do |instance|
instances << instance
end
end
end
instances
end
# Prints details of the given EC2 instances.
#
# @param instances [Array<Aws::EC2::Types::Instance>] List of EC2 instances to print.
def print_instances(instances)
instances.each do |instance|
@logger.info("Instance ID: #{instance.instance_id}")
@logger.info("Instance Type: #{instance.instance_type}")
@logger.info("Public IP: #{instance.public_ip_address}")
@logger.info("Public DNS Name: #{instance.public_dns_name}")
@logger.info("\n")
end
end
end
if $PROGRAM_NAME == __FILE__
ec2_client = Aws::EC2::Client.new(region: 'us-west-2')
manager = EC2Manager.new(ec2_client)
manager.list_instances
end
- Rust
-
- SDKpara Rust
-
async fn show_security_groups(client: &aws_sdk_ec2::Client, group_ids: Vec<String>) {
let response = client
.describe_security_groups()
.set_group_ids(Some(group_ids))
.send()
.await;
match response {
Ok(output) => {
for group in output.security_groups() {
println!(
"Found Security Group {} ({}), vpc id {} and description {}",
group.group_name().unwrap_or("unknown"),
group.group_id().unwrap_or("id-unknown"),
group.vpc_id().unwrap_or("vpcid-unknown"),
group.description().unwrap_or("(none)")
);
}
}
Err(err) => {
let err = err.into_service_error();
let meta = err.meta();
let message = meta.message().unwrap_or("unknown");
let code = meta.code().unwrap_or("unknown");
eprintln!("Error listing EC2 Security Groups: ({code}) {message}");
}
}
}
