# 使用 AWS SDK 的 CloudFront 场景
<a name="service_code_examples_scenarios"></a>

以下代码示例演示如何通过 AWS SDK 实施 CloudFront 中的常见场景。这些场景展示了如何通过在 CloudFront 中调用多个函数或与其它 AWS 服务结合来完成特定任务。每个场景都包含完整源代码的链接，您可以在其中找到有关如何设置和运行代码的说明。

场景以中等水平的经验为目标，可帮助您结合具体环境了解服务操作。

**Topics**
+ [创建多租户分配和分配租户](example_cloudfront_CreateSaasResources_section.md)
+ [删除签名资源](example_cloudfront_DeleteSigningResources_section.md)
+ [CloudFront 入门](example_cloudfront_GettingStarted_section.md)
+ [对 URL 和 Cookie 进行签名](example_cloudfront_CloudFrontUtilities_section.md)

# 创建 SaaS 管理器资源 AWS SDK
<a name="example_cloudfront_CreateSaasResources_section"></a>

以下代码示例演示了如何使用各种配置创建多租户分配和分配租户。

------
#### [ Java ]

**适用于 Java 的 SDK 2.x**  
 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cloudfront#code-examples)中查找完整示例，了解如何进行设置和运行。
以下示例演示了如何使用参数和通配符证书创建多租户分配。  

```
import software.amazon.awssdk.core.internal.waiters.ResponseOrException;
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.ConnectionMode;
import software.amazon.awssdk.services.cloudfront.model.CreateDistributionResponse;
import software.amazon.awssdk.services.cloudfront.model.Distribution;
import software.amazon.awssdk.services.cloudfront.model.GetDistributionResponse;
import software.amazon.awssdk.services.cloudfront.model.HttpVersion;
import software.amazon.awssdk.services.cloudfront.model.Method;
import software.amazon.awssdk.services.cloudfront.model.SSLSupportMethod;
import software.amazon.awssdk.services.cloudfront.model.ViewerProtocolPolicy;
import software.amazon.awssdk.services.cloudfront.waiters.CloudFrontWaiter;
import software.amazon.awssdk.services.s3.S3Client;

import java.time.Instant;

public class CreateMultiTenantDistribution {
    public static Distribution CreateMultiTenantDistributionWithCert(CloudFrontClient cloudFrontClient,
                                                                     S3Client s3Client,
                                                                     final String bucketName,
                                                                     final String certificateArn) {
        // fetch the origin info if necessary
        final String region = s3Client.headBucket(b -> b.bucket(bucketName)).sdkHttpResponse().headers()
                .get("x-amz-bucket-region").get(0);
        final String originDomain = bucketName + ".s3." + region + ".amazonaws.com";
        String originId = originDomain; // Use the originDomain value for the originId.

        CreateDistributionResponse createDistResponse = cloudFrontClient.createDistribution(builder -> builder
                .distributionConfig(b1 -> b1
                        .httpVersion(HttpVersion.HTTP2)
                        .enabled(true)
                        .comment("Template Distribution with cert built with java")
                        .connectionMode(ConnectionMode.TENANT_ONLY)
                        .callerReference(Instant.now().toString())
                        .viewerCertificate(certBuilder -> certBuilder
                                .acmCertificateArn(certificateArn)
                                .sslSupportMethod(SSLSupportMethod.SNI_ONLY))
                        .origins(b2 -> b2
                                .quantity(1)
                                .items(b3 -> b3
                                        .domainName(originDomain)
                                        .id(originId)
                                        .originPath("/{{tenantName}}")
                                        .s3OriginConfig(builder4 -> builder4
                                                .originAccessIdentity(
                                                        ""))))
                        .tenantConfig(b5 -> b5
                                .parameterDefinitions(b6 -> b6
                                        .name("tenantName")
                                        .definition(b7 -> b7
                                                .stringSchema(b8 -> b8
                                                        .comment("tenantName value")
                                                        .defaultValue("root")
                                                        .required(false)))))
                        .defaultCacheBehavior(b2 -> b2
                                .viewerProtocolPolicy(ViewerProtocolPolicy.ALLOW_ALL)
                                .targetOriginId(originId)
                                .cachePolicyId("658327ea-f89d-4fab-a63d-7e88639e58f6") // CachingOptimized Policy
                                .allowedMethods(b4 -> b4
                                        .quantity(2)
                                        .items(Method.HEAD, Method.GET)))
                ));

        final Distribution distribution = createDistResponse.distribution();
        try (CloudFrontWaiter cfWaiter = CloudFrontWaiter.builder().client(cloudFrontClient).build()) {
            ResponseOrException<GetDistributionResponse> responseOrException = cfWaiter
                    .waitUntilDistributionDeployed(builder -> builder.id(distribution.id()))
                    .matched();
            responseOrException.response()
                    .orElseThrow(() -> new RuntimeException("Distribution not created"));
        }
        return distribution;
    }

    public static Distribution CreateMultiTenantDistributionNoCert(CloudFrontClient cloudFrontClient,
                                                             S3Client s3Client,
                                                             final String bucketName) {
        // fetch the origin info if necessary
        final String region = s3Client.headBucket(b -> b.bucket(bucketName)).sdkHttpResponse().headers()
                .get("x-amz-bucket-region").get(0);
        final String originDomain = bucketName + ".s3." + region + ".amazonaws.com";
        String originId = originDomain; // Use the originDomain value for the originId.

        CreateDistributionResponse createDistResponse = cloudFrontClient.createDistribution(builder -> builder
                .distributionConfig(b1 -> b1
                        .httpVersion(HttpVersion.HTTP2)
                        .enabled(true)
                        .comment("Template Distribution with cert built with java")
                        .connectionMode(ConnectionMode.TENANT_ONLY)
                        .callerReference(Instant.now().toString())
                        .origins(b2 -> b2
                                .quantity(1)
                                .items(b3 -> b3
                                        .domainName(originDomain)
                                        .id(originId)
                                        .originPath("/{{tenantName}}")
                                        .s3OriginConfig(builder4 -> builder4
                                                .originAccessIdentity(
                                                        ""))))
                        .tenantConfig(b5 -> b5
                                .parameterDefinitions(b6 -> b6
                                        .name("tenantName")
                                        .definition(b7 -> b7
                                                .stringSchema(b8 -> b8
                                                        .comment("tenantName value")
                                                        .defaultValue("root")
                                                        .required(false)))))
                        .defaultCacheBehavior(b2 -> b2
                                .viewerProtocolPolicy(ViewerProtocolPolicy.ALLOW_ALL)
                                .targetOriginId(originId)
                                .cachePolicyId("658327ea-f89d-4fab-a63d-7e88639e58f6") // CachingOptimized Policy
                                .allowedMethods(b4 -> b4
                                        .quantity(2)
                                        .items(Method.HEAD, Method.GET)))
                ));

        final Distribution distribution = createDistResponse.distribution();
        try (CloudFrontWaiter cfWaiter = CloudFrontWaiter.builder().client(cloudFrontClient).build()) {
            ResponseOrException<GetDistributionResponse> responseOrException = cfWaiter
                    .waitUntilDistributionDeployed(builder -> builder.id(distribution.id()))
                    .matched();
            responseOrException.response()
                    .orElseThrow(() -> new RuntimeException("Distribution not created"));
        }
        return distribution;
    }
}
```
以下示例演示了如何创建与该模板关联的分配租户，包括利用我们在上面声明的参数。请注意，我们不需要在此处添加证书信息，因为父模板涵盖了我们的域。  

```
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.CreateConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.CreateDistributionTenantResponse;
import software.amazon.awssdk.services.cloudfront.model.DistributionTenant;
import software.amazon.awssdk.services.cloudfront.model.GetConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.ValidationTokenHost;
import software.amazon.awssdk.services.route53.Route53Client;
import software.amazon.awssdk.services.route53.model.RRType;

import java.time.Instant;

public class CreateDistributionTenant {

    public static DistributionTenant createDistributionTenantNoCert(CloudFrontClient cloudFrontClient,
                                                                    Route53Client route53Client,
                                                                    String distributionId,
                                                                    String domain,
                                                                    String hostedZoneId) {
        CreateDistributionTenantResponse createResponse = cloudFrontClient.createDistributionTenant(builder -> builder
                .distributionId(distributionId)
                .domains(b1 -> b1
                        .domain(domain))
                .parameters(b2 -> b2
                        .name("tenantName")
                        .value("myTenant"))
                .enabled(false)
                .name("no-cert-tenant")
        );

        final DistributionTenant distributionTenant = createResponse.distributionTenant();

        // Then update the Route53 hosted zone to point your domain at the distribution tenant
        // We fetch the RoutingEndpoint to point to via the default connection group that was created for your tenant
        final GetConnectionGroupResponse fetchedConnectionGroup = cloudFrontClient.getConnectionGroup(builder -> builder
                .identifier(distributionTenant.connectionGroupId()));

        route53Client.changeResourceRecordSets(builder -> builder
                .hostedZoneId(hostedZoneId)
                .changeBatch(b1 -> b1
                        .comment("ChangeBatch comment")
                        .changes(b2 -> b2
                                .resourceRecordSet(b3 -> b3
                                        .name(domain)
                                        .type("CNAME")
                                        .ttl(300L)
                                        .resourceRecords(b4 -> b4
                                                .value(fetchedConnectionGroup.connectionGroup().routingEndpoint())))
                                .action("CREATE"))
                ));
        return distributionTenant;
    }

}
```
如果父模板中省略了查看器证书，则需要改为添加与之关联的租户的证书信息。以下示例演示了如何通过涵盖租户所需域的 ACM 证书 arn 来执行此操作。  

```
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.CreateConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.CreateDistributionTenantResponse;
import software.amazon.awssdk.services.cloudfront.model.DistributionTenant;
import software.amazon.awssdk.services.cloudfront.model.GetConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.ValidationTokenHost;
import software.amazon.awssdk.services.route53.Route53Client;
import software.amazon.awssdk.services.route53.model.RRType;

import java.time.Instant;

public class CreateDistributionTenant {

    public static DistributionTenant createDistributionTenantWithCert(CloudFrontClient cloudFrontClient,
                                                                      Route53Client route53Client,
                                                                      String distributionId,
                                                                      String domain,
                                                                      String hostedZoneId,
                                                                      String certificateArn) {
        CreateDistributionTenantResponse createResponse = cloudFrontClient.createDistributionTenant(builder -> builder
                .distributionId(distributionId)
                .domains(b1 -> b1
                        .domain(domain))
                .enabled(false)
                .name("tenant-with-cert")
                .parameters(b2 -> b2
                        .name("tenantName")
                        .value("myTenant"))
                .customizations(b3 -> b3
                        .certificate(b4 -> b4
                                .arn(certificateArn))) // NOTE: Cert must be in Us-East-1 and cover the domain provided in this request

        );

        final DistributionTenant distributionTenant = createResponse.distributionTenant();

        // Then update the Route53 hosted zone to point your domain at the distribution tenant
        // We fetch the RoutingEndpoint to point to via the default connection group that was created for your tenant
        final GetConnectionGroupResponse fetchedConnectionGroup = cloudFrontClient.getConnectionGroup(builder -> builder
                .identifier(distributionTenant.connectionGroupId()));

        route53Client.changeResourceRecordSets(builder -> builder
                .hostedZoneId(hostedZoneId)
                .changeBatch(b1 -> b1
                        .comment("ChangeBatch comment")
                        .changes(b2 -> b2
                                .resourceRecordSet(b3 -> b3
                                        .name(domain)
                                        .type("CNAME")
                                        .ttl(300L)
                                        .resourceRecords(b4 -> b4
                                                .value(fetchedConnectionGroup.connectionGroup().routingEndpoint())))
                                .action("CREATE"))
                ));
        return distributionTenant;
    }

}
```
以下示例演示了如何使用 CloudFront 托管的托管式证书请求来执行此操作。如果还没有流量流向您的域，则这是理想之选。在这种情况下，我们创建一个 ConnectionGroup 来生成 RoutingEndpoint。然后，我们使用该 RoutingEndpoint 来创建 DNS 记录，这些记录用于验证域所有权并指向 CloudFront。然后，CloudFront 将自动提供令牌来验证域所有权并创建托管式证书。  

```
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.CreateConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.CreateDistributionTenantResponse;
import software.amazon.awssdk.services.cloudfront.model.DistributionTenant;
import software.amazon.awssdk.services.cloudfront.model.GetConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.ValidationTokenHost;
import software.amazon.awssdk.services.route53.Route53Client;
import software.amazon.awssdk.services.route53.model.RRType;

import java.time.Instant;

public class CreateDistributionTenant {

    public static DistributionTenant createDistributionTenantCfHosted(CloudFrontClient cloudFrontClient,
                                                                      Route53Client route53Client,
                                                                      String distributionId,
                                                                      String domain,
                                                                      String hostedZoneId) throws InterruptedException {
        CreateConnectionGroupResponse createConnectionGroupResponse = cloudFrontClient.createConnectionGroup(builder -> builder
                .ipv6Enabled(true)
                .name("cf-hosted-connection-group")
                .enabled(true));

        route53Client.changeResourceRecordSets(builder -> builder
                .hostedZoneId(hostedZoneId)
                .changeBatch(b1 -> b1
                        .comment("cf-hosted domain validation record")
                        .changes(b2 -> b2
                                .resourceRecordSet(b3 -> b3
                                        .name(domain)
                                        .type(RRType.CNAME)
                                        .ttl(300L)
                                        .resourceRecords(b4 -> b4
                                                .value(createConnectionGroupResponse.connectionGroup().routingEndpoint())))
                                .action("CREATE"))
                ));

        // Give the R53 record time to propagate, if it isn't being returned by servers yet, the following call will fail
        Thread.sleep(60000);

        CreateDistributionTenantResponse createResponse = cloudFrontClient.createDistributionTenant(builder -> builder
                .distributionId(distributionId)
                .domains(b1 -> b1
                        .domain(domain))
                .connectionGroupId(createConnectionGroupResponse.connectionGroup().id())
                .enabled(false)
                .name("cf-hosted-tenant")
                .parameters(b2 -> b2
                        .name("tenantName")
                        .value("myTenant"))
                .managedCertificateRequest(b3 -> b3
                        .validationTokenHost(ValidationTokenHost.CLOUDFRONT)
                )
        );

        return createResponse.distributionTenant();
    }

}
```
以下示例演示了如何使用自托管的托管式证书请求来执行此操作。如果您有流量流向您的域，并且无法容忍在迁移期间出现停机，则这是理想之选。在本示例的最后，将在等待域验证和 DNS 设置的状态下创建租户。准备好迁移流量时，请按照 [此处]（https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/managed-cloudfront-certificates.html\$1complete-domain-ownership）的步骤完成设置。  

```
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.CreateConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.CreateDistributionTenantResponse;
import software.amazon.awssdk.services.cloudfront.model.DistributionTenant;
import software.amazon.awssdk.services.cloudfront.model.GetConnectionGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.ValidationTokenHost;
import software.amazon.awssdk.services.route53.Route53Client;
import software.amazon.awssdk.services.route53.model.RRType;

import java.time.Instant;

public class CreateDistributionTenant {

    public static DistributionTenant createDistributionTenantSelfHosted(CloudFrontClient cloudFrontClient,
                                                                        String distributionId,
                                                                        String domain) {
        CreateDistributionTenantResponse createResponse = cloudFrontClient.createDistributionTenant(builder -> builder
                .distributionId(distributionId)
                .domains(b1 -> b1
                        .domain(domain))
                .parameters(b2 -> b2
                        .name("tenantName")
                        .value("myTenant"))
                .enabled(false)
                .name("self-hosted-tenant")
                .managedCertificateRequest(b3 -> b3
                        .validationTokenHost(ValidationTokenHost.SELF_HOSTED)
                        .primaryDomainName(domain)
                )
        );

        return createResponse.distributionTenant();
    }

}
```
+ 有关 API 详细信息，请参阅《AWS SDK for Java 2.x API Reference》**中的以下主题。
  + [:CreateDistribution](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/CreateDistribution)
  + [CreateDistributionTenant](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/CreateDistributionTenant)

------

有关 AWS SDK 开发人员指南和代码示例的完整列表，请参阅 [将 CloudFront 与 AWS SDK 配合使用](sdk-general-information-section.md) 本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。

# 使用 AWS SDK 删除 CloudFront 签名资源
<a name="example_cloudfront_DeleteSigningResources_section"></a>

以下代码示例演示了如何删除用于访问 Amazon Simple Storage Service (Amazon S3) 桶中的受限内容的资源。

------
#### [ Java ]

**适用于 Java 的 SDK 2.x**  
 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cloudfront#code-examples) 中查找完整示例，了解如何进行设置和运行。

```
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.services.cloudfront.CloudFrontClient;
import software.amazon.awssdk.services.cloudfront.model.DeleteKeyGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.DeleteOriginAccessControlResponse;
import software.amazon.awssdk.services.cloudfront.model.DeletePublicKeyResponse;
import software.amazon.awssdk.services.cloudfront.model.GetKeyGroupResponse;
import software.amazon.awssdk.services.cloudfront.model.GetOriginAccessControlResponse;
import software.amazon.awssdk.services.cloudfront.model.GetPublicKeyResponse;

public class DeleteSigningResources {
    private static final Logger logger = LoggerFactory.getLogger(DeleteSigningResources.class);

    public static void deleteOriginAccessControl(final CloudFrontClient cloudFrontClient,
            final String originAccessControlId) {
        GetOriginAccessControlResponse getResponse = cloudFrontClient
                .getOriginAccessControl(b -> b.id(originAccessControlId));
        DeleteOriginAccessControlResponse deleteResponse = cloudFrontClient.deleteOriginAccessControl(builder -> builder
                .id(originAccessControlId)
                .ifMatch(getResponse.eTag()));
        if (deleteResponse.sdkHttpResponse().isSuccessful()) {
            logger.info("Successfully deleted Origin Access Control [{}]", originAccessControlId);
        }
    }

    public static void deleteKeyGroup(final CloudFrontClient cloudFrontClient, final String keyGroupId) {

        GetKeyGroupResponse getResponse = cloudFrontClient.getKeyGroup(b -> b.id(keyGroupId));
        DeleteKeyGroupResponse deleteResponse = cloudFrontClient.deleteKeyGroup(builder -> builder
                .id(keyGroupId)
                .ifMatch(getResponse.eTag()));
        if (deleteResponse.sdkHttpResponse().isSuccessful()) {
            logger.info("Successfully deleted Key Group [{}]", keyGroupId);
        }
    }

    public static void deletePublicKey(final CloudFrontClient cloudFrontClient, final String publicKeyId) {
        GetPublicKeyResponse getResponse = cloudFrontClient.getPublicKey(b -> b.id(publicKeyId));

        DeletePublicKeyResponse deleteResponse = cloudFrontClient.deletePublicKey(builder -> builder
                .id(publicKeyId)
                .ifMatch(getResponse.eTag()));

        if (deleteResponse.sdkHttpResponse().isSuccessful()) {
            logger.info("Successfully deleted Public Key [{}]", publicKeyId);
        }
    }
}
```
+ 有关 API 详细信息，请参阅《AWS SDK for Java 2.x API Reference》**中的以下主题。
  + [DeleteKeyGroup](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/DeleteKeyGroup)
  + [DeleteOriginAccessControl](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/DeleteOriginAccessControl)
  + [DeletePublicKey](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/DeletePublicKey)

------

有关 AWS SDK 开发人员指南和代码示例的完整列表，请参阅 [将 CloudFront 与 AWS SDK 配合使用](sdk-general-information-section.md) 本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。

# 通过 CLI 开始使用基本 CloudFront 分配
<a name="example_cloudfront_GettingStarted_section"></a>

以下代码示例展示了如何：
+ 创建 Amazon S3 存储桶来存储内容
+ 将示例内容上传到 S3 存储桶
+ 创建来源访问控制（OAC）来实现安全的 S3 访问
+ 创建以 S3 为源的 CloudFront 分配
+ 更新 S3 存储桶策略以支持 CloudFront 访问权限
+ 等待分配部署并测试内容访问权限
+ 清理资源，包括分配、OAC 和 S3 存储桶

------
#### [ Bash ]

**AWS CLI 及 Bash 脚本**  
 查看 GitHub，了解更多信息。在 [Sample developer tutorials](https://github.com/aws-samples/sample-developer-tutorials/tree/main/tuts/005-cloudfront-gettingstarted) 存储库中查找完整示例，了解如何进行设置和运行。

```
#!/bin/bash

# CloudFront Getting Started Tutorial Script
# This script creates an S3 bucket, uploads sample content, creates a CloudFront distribution with OAC,
# and demonstrates how to access content through CloudFront.

# Set up logging
LOG_FILE="cloudfront-tutorial.log"
exec > >(tee -a "$LOG_FILE") 2>&1

echo "Starting CloudFront Getting Started Tutorial at $(date)"

# Function to handle errors
handle_error() {
    echo "ERROR: $1"
    echo "Resources created before error:"
    if [ -n "$BUCKET_NAME" ]; then
        echo "- S3 Bucket: $BUCKET_NAME"
    fi
    if [ -n "$OAC_ID" ]; then
        echo "- CloudFront Origin Access Control: $OAC_ID"
    fi
    if [ -n "$DISTRIBUTION_ID" ]; then
        echo "- CloudFront Distribution: $DISTRIBUTION_ID"
    fi
    
    echo "Attempting to clean up resources..."
    cleanup
    exit 1
}

# Function to clean up resources
cleanup() {
    echo "Cleaning up resources..."
    
    if [ -n "$DISTRIBUTION_ID" ]; then
        echo "Disabling CloudFront distribution $DISTRIBUTION_ID..."
        
        # Get the current configuration and ETag
        ETAG=$(aws cloudfront get-distribution-config --id "$DISTRIBUTION_ID" --query 'ETag' --output text)
        if [ $? -ne 0 ]; then
            echo "Failed to get distribution config. Continuing with cleanup..."
        else
            # Create a modified configuration with Enabled=false
            aws cloudfront get-distribution-config --id "$DISTRIBUTION_ID" | \
            jq '.DistributionConfig.Enabled = false' > temp_disabled_config.json
            
            # Update the distribution to disable it
            aws cloudfront update-distribution \
                --id "$DISTRIBUTION_ID" \
                --distribution-config file://<(jq '.DistributionConfig' temp_disabled_config.json) \
                --if-match "$ETAG"
                
            if [ $? -ne 0 ]; then
                echo "Failed to disable distribution. Continuing with cleanup..."
            else
                echo "Waiting for distribution to be disabled (this may take several minutes)..."
                aws cloudfront wait distribution-deployed --id "$DISTRIBUTION_ID"
                
                # Delete the distribution
                ETAG=$(aws cloudfront get-distribution-config --id "$DISTRIBUTION_ID" --query 'ETag' --output text)
                aws cloudfront delete-distribution --id "$DISTRIBUTION_ID" --if-match "$ETAG"
                if [ $? -ne 0 ]; then
                    echo "Failed to delete distribution. You may need to delete it manually."
                else
                    echo "CloudFront distribution deleted."
                fi
            fi
        fi
    fi
    
    if [ -n "$OAC_ID" ]; then
        echo "Deleting Origin Access Control $OAC_ID..."
        OAC_ETAG=$(aws cloudfront get-origin-access-control --id "$OAC_ID" --query 'ETag' --output text 2>/dev/null)
        if [ $? -ne 0 ]; then
            echo "Failed to get Origin Access Control ETag. You may need to delete it manually."
        else
            aws cloudfront delete-origin-access-control --id "$OAC_ID" --if-match "$OAC_ETAG"
            if [ $? -ne 0 ]; then
                echo "Failed to delete Origin Access Control. You may need to delete it manually."
            else
                echo "Origin Access Control deleted."
            fi
        fi
    fi
    
    if [ -n "$BUCKET_NAME" ]; then
        echo "Deleting S3 bucket $BUCKET_NAME and its contents..."
        aws s3 rm "s3://$BUCKET_NAME" --recursive
        if [ $? -ne 0 ]; then
            echo "Failed to remove bucket contents. Continuing with bucket deletion..."
        fi
        
        aws s3 rb "s3://$BUCKET_NAME"
        if [ $? -ne 0 ]; then
            echo "Failed to delete bucket. You may need to delete it manually."
        else
            echo "S3 bucket deleted."
        fi
    fi
    
    # Clean up temporary files
    rm -f temp_disabled_config.json
    rm -rf temp_content
}

# Generate a random identifier for the bucket name
RANDOM_ID=$(openssl rand -hex 6)
BUCKET_NAME="cloudfront-${RANDOM_ID}"
echo "Using bucket name: $BUCKET_NAME"

# Create a temporary directory for content
TEMP_DIR="temp_content"
mkdir -p "$TEMP_DIR/css"
if [ $? -ne 0 ]; then
    handle_error "Failed to create temporary directory"
fi

# Step 1: Create an S3 bucket
echo "Creating S3 bucket: $BUCKET_NAME"
aws s3 mb "s3://$BUCKET_NAME"
if [ $? -ne 0 ]; then
    handle_error "Failed to create S3 bucket"
fi

# Step 2: Create sample content
echo "Creating sample content..."
cat > "$TEMP_DIR/index.html" << 'EOF'
<!DOCTYPE html>
<html>
<head>
    <title>Hello World</title>
    <link rel="stylesheet" type="text/css" href="css/styles.css">
</head>
<body>
    <h1>Hello world!</h1>
</body>
</html>
EOF

cat > "$TEMP_DIR/css/styles.css" << 'EOF'
body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f5f5f5;
}
h1 {
    color: #333;
    text-align: center;
}
EOF

# Step 3: Upload content to the S3 bucket
echo "Uploading content to S3 bucket..."
aws s3 cp "$TEMP_DIR/" "s3://$BUCKET_NAME/" --recursive
if [ $? -ne 0 ]; then
    handle_error "Failed to upload content to S3 bucket"
fi

# Step 4: Create Origin Access Control
echo "Creating Origin Access Control..."
OAC_RESPONSE=$(aws cloudfront create-origin-access-control \
    --origin-access-control-config Name="oac-for-$BUCKET_NAME",SigningProtocol=sigv4,SigningBehavior=always,OriginAccessControlOriginType=s3)

if [ $? -ne 0 ]; then
    handle_error "Failed to create Origin Access Control"
fi

OAC_ID=$(echo "$OAC_RESPONSE" | jq -r '.OriginAccessControl.Id')
echo "Created Origin Access Control with ID: $OAC_ID"

# Step 5: Create CloudFront distribution
echo "Creating CloudFront distribution..."

# Get AWS account ID for bucket policy
ACCOUNT_ID=$(aws sts get-caller-identity --query 'Account' --output text)
if [ $? -ne 0 ]; then
    handle_error "Failed to get AWS account ID"
fi

# Create distribution configuration
cat > distribution-config.json << EOF
{
    "CallerReference": "cli-tutorial-$(date +%s)",
    "Origins": {
        "Quantity": 1,
        "Items": [
            {
                "Id": "S3-$BUCKET_NAME",
                "DomainName": "$BUCKET_NAME.s3.amazonaws.com",
                "S3OriginConfig": {
                    "OriginAccessIdentity": ""
                },
                "OriginAccessControlId": "$OAC_ID"
            }
        ]
    },
    "DefaultCacheBehavior": {
        "TargetOriginId": "S3-$BUCKET_NAME",
        "ViewerProtocolPolicy": "redirect-to-https",
        "AllowedMethods": {
            "Quantity": 2,
            "Items": ["GET", "HEAD"],
            "CachedMethods": {
                "Quantity": 2,
                "Items": ["GET", "HEAD"]
            }
        },
        "DefaultTTL": 86400,
        "MinTTL": 0,
        "MaxTTL": 31536000,
        "Compress": true,
        "ForwardedValues": {
            "QueryString": false,
            "Cookies": {
                "Forward": "none"
            }
        }
    },
    "Comment": "CloudFront distribution for tutorial",
    "Enabled": true,
    "WebACLId": ""
}
EOF

DIST_RESPONSE=$(aws cloudfront create-distribution --distribution-config file://distribution-config.json)
if [ $? -ne 0 ]; then
    handle_error "Failed to create CloudFront distribution"
fi

DISTRIBUTION_ID=$(echo "$DIST_RESPONSE" | jq -r '.Distribution.Id')
DOMAIN_NAME=$(echo "$DIST_RESPONSE" | jq -r '.Distribution.DomainName')

echo "Created CloudFront distribution with ID: $DISTRIBUTION_ID"
echo "CloudFront domain name: $DOMAIN_NAME"

# Step 6: Update S3 bucket policy
echo "Updating S3 bucket policy..."
cat > bucket-policy.json << EOF
{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Sid": "AllowCloudFrontServicePrincipal",
            "Effect": "Allow",
            "Principal": {
                "Service": "cloudfront.amazonaws.com"
            },
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::$BUCKET_NAME/*",
            "Condition": {
                "StringEquals": {
                    "AWS:SourceArn": "arn:aws:cloudfront::$ACCOUNT_ID:distribution/$DISTRIBUTION_ID"
                }
            }
        }
    ]
}
EOF

aws s3api put-bucket-policy --bucket "$BUCKET_NAME" --policy file://bucket-policy.json
if [ $? -ne 0 ]; then
    handle_error "Failed to update S3 bucket policy"
fi

# Step 7: Wait for distribution to deploy
echo "Waiting for CloudFront distribution to deploy (this may take 5-10 minutes)..."
aws cloudfront wait distribution-deployed --id "$DISTRIBUTION_ID"
if [ $? -ne 0 ]; then
    echo "Warning: Distribution deployment wait timed out. The distribution may still be deploying."
else
    echo "CloudFront distribution is now deployed."
fi

# Step 8: Display access information
echo ""
echo "===== CloudFront Distribution Setup Complete ====="
echo "You can access your content at: https://$DOMAIN_NAME/index.html"
echo ""
echo "Resources created:"
echo "- S3 Bucket: $BUCKET_NAME"
echo "- CloudFront Origin Access Control: $OAC_ID"
echo "- CloudFront Distribution: $DISTRIBUTION_ID"
echo ""

# Ask user if they want to clean up resources
read -p "Do you want to clean up all resources created by this script? (y/n): " CLEANUP_RESPONSE
if [[ "$CLEANUP_RESPONSE" =~ ^[Yy] ]]; then
    cleanup
    echo "All resources have been cleaned up."
else
    echo "Resources will not be cleaned up. You can manually delete them later."
    echo "To access your content, visit: https://$DOMAIN_NAME/index.html"
fi

echo "Tutorial completed at $(date)"
```
+ 有关 API 详细信息，请参阅《AWS CLI 命令参考》**中的以下主题。
  + [:CreateDistribution](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/CreateDistribution)
  + [CreateOriginAccessControl](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/CreateOriginAccessControl)
  + [:DeleteDistribution](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/DeleteDistribution)
  + [DeleteOriginAccessControl](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/DeleteOriginAccessControl)
  + [GetDistribution](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/GetDistribution)
  + [GetDistributionConfig](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/GetDistributionConfig)
  + [GetOriginAccessControl](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/GetOriginAccessControl)
  + [:UpdateDistribution](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/UpdateDistribution)
  + [WaitDistributionDeployed](https://docs.aws.amazon.com/goto/aws-cli/cloudfront-2020-05-31/WaitDistributionDeployed)

------

有关 AWS SDK 开发人员指南和代码示例的完整列表，请参阅 [将 CloudFront 与 AWS SDK 配合使用](sdk-general-information-section.md) 本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。

# 使用 AWS SDK 创建签名网址和 Cookie
<a name="example_cloudfront_CloudFrontUtilities_section"></a>

以下代码示例演示了如何创建允许访问受限资源的签名 URL 和 Cookie。

------
#### [ Java ]

**适用于 Java 的 SDK 2.x**  
 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cloudfront#code-examples)中查找完整示例，了解如何进行设置和运行。
使用 [CannedSignerRequest](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudfront/model/CannedSignerRequest.html) 类对具有*标准* 策略的 URL 或 Cookie 进行签名。  

```
import software.amazon.awssdk.services.cloudfront.model.CannedSignerRequest;

import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Instant;
import java.time.temporal.ChronoUnit;

public class CreateCannedPolicyRequest {

    public static CannedSignerRequest createRequestForCannedPolicy(String distributionDomainName,
            String fileNameToUpload,
            String privateKeyFullPath, String publicKeyId) throws Exception {
        String protocol = "https";
        String resourcePath = "/" + fileNameToUpload;

        String cloudFrontUrl = new URL(protocol, distributionDomainName, resourcePath).toString();
        Instant expirationDate = Instant.now().plus(7, ChronoUnit.DAYS);
        Path path = Paths.get(privateKeyFullPath);

        return CannedSignerRequest.builder()
                .resourceUrl(cloudFrontUrl)
                .privateKey(path)
                .keyPairId(publicKeyId)
                .expirationDate(expirationDate)
                .build();
    }
}
```
使用 [CustomSignerRequest](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudfront/model/CustomSignerRequest.html) 类对具有*自定义* 策略的 URL 或 Cookie 进行签名。`activeDate` 和 `ipRange` 是可选方法。  

```
import software.amazon.awssdk.services.cloudfront.model.CustomSignerRequest;

import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Instant;
import java.time.temporal.ChronoUnit;

public class CreateCustomPolicyRequest {

    public static CustomSignerRequest createRequestForCustomPolicy(String distributionDomainName,
            String fileNameToUpload,
            String privateKeyFullPath, String publicKeyId) throws Exception {
        String protocol = "https";
        String resourcePath = "/" + fileNameToUpload;

        String cloudFrontUrl = new URL(protocol, distributionDomainName, resourcePath).toString();
        Instant expireDate = Instant.now().plus(7, ChronoUnit.DAYS);
        // URL will be accessible tomorrow using the signed URL.
        Instant activeDate = Instant.now().plus(1, ChronoUnit.DAYS);
        Path path = Paths.get(privateKeyFullPath);

        return CustomSignerRequest.builder()
                .resourceUrl(cloudFrontUrl)
                // .resourceUrlPattern("https://*.example.com/*")  // Optional.
                .privateKey(path)
                .keyPairId(publicKeyId)
                .expirationDate(expireDate)
                .activeDate(activeDate) // Optional.
                // .ipRange("192.168.0.1/24") // Optional.
                .build();
    }
}
```
以下示例演示如何使用 [CloudFrontUtilities](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/cloudfront/CloudFrontUtilities.html) 类生成签名 Cookie 和 URL。请访问 GitHub，[查看](https://github.com/awsdocs/aws-doc-sdk-examples/blob/main/javav2/example_code/cloudfront/src/main/java/com/example/cloudfront/SigningUtilities.java)此代码示例。  

```
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.services.cloudfront.CloudFrontUtilities;
import software.amazon.awssdk.services.cloudfront.cookie.CookiesForCannedPolicy;
import software.amazon.awssdk.services.cloudfront.cookie.CookiesForCustomPolicy;
import software.amazon.awssdk.services.cloudfront.model.CannedSignerRequest;
import software.amazon.awssdk.services.cloudfront.model.CustomSignerRequest;
import software.amazon.awssdk.services.cloudfront.url.SignedUrl;

public class SigningUtilities {
    private static final Logger logger = LoggerFactory.getLogger(SigningUtilities.class);
    private static final CloudFrontUtilities cloudFrontUtilities = CloudFrontUtilities.create();

    public static SignedUrl signUrlForCannedPolicy(CannedSignerRequest cannedSignerRequest) {
        SignedUrl signedUrl = cloudFrontUtilities.getSignedUrlWithCannedPolicy(cannedSignerRequest);
        logger.info("Signed URL: [{}]", signedUrl.url());
        return signedUrl;
    }

    public static SignedUrl signUrlForCustomPolicy(CustomSignerRequest customSignerRequest) {
        SignedUrl signedUrl = cloudFrontUtilities.getSignedUrlWithCustomPolicy(customSignerRequest);
        logger.info("Signed URL: [{}]", signedUrl.url());
        return signedUrl;
    }

    public static CookiesForCannedPolicy getCookiesForCannedPolicy(CannedSignerRequest cannedSignerRequest) {
        CookiesForCannedPolicy cookiesForCannedPolicy = cloudFrontUtilities
                .getCookiesForCannedPolicy(cannedSignerRequest);
        logger.info("Cookie EXPIRES header [{}]", cookiesForCannedPolicy.expiresHeaderValue());
        logger.info("Cookie KEYPAIR header [{}]", cookiesForCannedPolicy.keyPairIdHeaderValue());
        logger.info("Cookie SIGNATURE header [{}]", cookiesForCannedPolicy.signatureHeaderValue());
        return cookiesForCannedPolicy;
    }

    public static CookiesForCustomPolicy getCookiesForCustomPolicy(CustomSignerRequest customSignerRequest) {
        CookiesForCustomPolicy cookiesForCustomPolicy = cloudFrontUtilities
                .getCookiesForCustomPolicy(customSignerRequest);
        logger.info("Cookie POLICY header [{}]", cookiesForCustomPolicy.policyHeaderValue());
        logger.info("Cookie KEYPAIR header [{}]", cookiesForCustomPolicy.keyPairIdHeaderValue());
        logger.info("Cookie SIGNATURE header [{}]", cookiesForCustomPolicy.signatureHeaderValue());
        return cookiesForCustomPolicy;
    }
}
```
+  有关 API 详细信息，请参阅《AWS SDK for Java 2.x API Reference》**中的 [CloudFrontUtilities](https://docs.aws.amazon.com/goto/SdkForJavaV2/cloudfront-2020-05-31/CloudFrontUtilities)。

------

有关 AWS SDK 开发人员指南和代码示例的完整列表，请参阅 [将 CloudFront 与 AWS SDK 配合使用](sdk-general-information-section.md) 本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。