Amazon OpenSearch Service와 상호 작용하기 위한 AWS SDK 사용

이 예시는 AWS SDK for Java의 버전 2에서 OpenSearchClientBuilder 생성자를 사용하여 OpenSearch 도메인을 생성하고, 도메인 구성을 업데이트하고, 도메인을 삭제합니다. waitForDomainProcessing에 대한 호출을 제거하여 (그리고 deleteDomain에 대한 호출을 언급하여) 해당 도메인이 온라인에 연결되어 사용 가능한 상태가 되도록 허용합니다.

package com.example.samples;

import java.util.concurrent.TimeUnit;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.opensearch.OpenSearchClient;
import software.amazon.awssdk.services.opensearch.model.ClusterConfig;
import software.amazon.awssdk.services.opensearch.model.EBSOptions;
import software.amazon.awssdk.services.opensearch.model.CognitoOptions;
import software.amazon.awssdk.services.opensearch.model.NodeToNodeEncryptionOptions;
import software.amazon.awssdk.services.opensearch.model.CreateDomainRequest;
import software.amazon.awssdk.services.opensearch.model.CreateDomainResponse;
import software.amazon.awssdk.services.opensearch.model.DescribeDomainRequest;
import software.amazon.awssdk.services.opensearch.model.UpdateDomainConfigRequest;
import software.amazon.awssdk.services.opensearch.model.UpdateDomainConfigResponse;
import software.amazon.awssdk.services.opensearch.model.DescribeDomainResponse;
import software.amazon.awssdk.services.opensearch.model.DeleteDomainRequest;
import software.amazon.awssdk.services.opensearch.model.DeleteDomainResponse;
import software.amazon.awssdk.services.opensearch.model.OpenSearchException;
import software.amazon.awssdk.auth.credentials.DefaultCredentialsProvider;

/**
 * Sample class demonstrating how to use the Amazon Web Services SDK for Java to create, update,
 * and delete Amazon OpenSearch Service domains.
 */

public class OpenSearchSample {

    public static void main(String[] args) {

    	String domainName = "my-test-domain";
    	
    	// Build the client using the default credentials chain.
        // You can use the CLI and run `aws configure` to set access key, secret
        // key, and default region.
    	
        OpenSearchClient client = OpenSearchClient.builder()
        		// Unnecessary, but lets you use a region different than your default.
        		.region(Region.US_EAST_1)
        		// Unnecessary, but if desired, you can use a different provider chain.
        		.credentialsProvider(DefaultCredentialsProvider.create())
                     .build();
        
        // Create a new domain, update its configuration, and delete it.
        createDomain(client, domainName);
        //waitForDomainProcessing(client, domainName);
        updateDomain(client, domainName);
        //waitForDomainProcessing(client, domainName);
        deleteDomain(client, domainName);
    }
    
    /**
     * Creates an Amazon OpenSearch Service domain with the specified options.
     * Some options require other Amazon Web Services resources, such as an Amazon Cognito user pool
     * and identity pool, whereas others require just an instance type or instance
     * count.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain you want to create
     */

    public static void createDomain(OpenSearchClient client, String domainName) {
    	
    	// Create the request and set the desired configuration options

        try {

            ClusterConfig clusterConfig = ClusterConfig.builder()
                    .dedicatedMasterEnabled(true)
                    .dedicatedMasterCount(3)
                    // Small, inexpensive instance types for testing. Not recommended for production.
                    .dedicatedMasterType("t2.small.search")
                    .instanceType("t2.small.search")
                    .instanceCount(5)
                    .build();

            // Many instance types require EBS storage.
            EBSOptions ebsOptions = EBSOptions.builder()
                    .ebsEnabled(true)
                    .volumeSize(10)
                    .volumeType("gp2")
                    .build();

            NodeToNodeEncryptionOptions encryptionOptions = NodeToNodeEncryptionOptions.builder()
                    .enabled(true)
                    .build();

            CreateDomainRequest createRequest = CreateDomainRequest.builder()
                    .domainName(domainName)
                    .engineVersion("OpenSearch_1.0")
                    .clusterConfig(clusterConfig)
                    .ebsOptions(ebsOptions)
                    .nodeToNodeEncryptionOptions(encryptionOptions)
                    // You can uncomment this line and add your account ID, a username, and the
                    // domain name to add an access policy.
                    // .accessPolicies("{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam::123456789012:user/user-name\"]},\"Action\":[\"es:*\"],\"Resource\":\"arn:aws:es:region:123456789012:domain/domain-name/*\"}]}")
                    .build();
            
            // Make the request.
            System.out.println("Sending domain creation request...");
            CreateDomainResponse createResponse = client.createDomain(createRequest);
            System.out.println("Domain status: "+createResponse.domainStatus().toString());
            System.out.println("Domain ID: "+createResponse.domainStatus().domainId());


        } catch (OpenSearchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
    
    /**
     * Updates the configuration of an Amazon OpenSearch Service domain with the
     * specified options. Some options require other Amazon Web Services resources, such as an
     * Amazon Cognito user pool and identity pool, whereas others require just an
     * instance type or instance count.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain to update
     */
    
    public static void updateDomain(OpenSearchClient client, String domainName) {

    	// Updates the domain to use three data instances instead of five.
        // You can uncomment the Cognito line and fill in the strings to enable Cognito
        // authentication for OpenSearch Dashboards.
    	
        try {

            ClusterConfig clusterConfig = ClusterConfig.builder()
                    .instanceCount(5)
                    .build();
            
            CognitoOptions cognitoOptions = CognitoOptions.builder()
                    .enabled(true)
                    .userPoolId("user-pool-id")
                    .identityPoolId("identity-pool-id")
                    .roleArn("role-arn")
                    .build();

            UpdateDomainConfigRequest updateRequest = UpdateDomainConfigRequest.builder()
                    .domainName(domainName)
                    .clusterConfig(clusterConfig)
                    //.cognitoOptions(cognitoOptions)
                    .build();

            System.out.println("Sending domain update request...");
            UpdateDomainConfigResponse updateResponse = client.updateDomainConfig(updateRequest);
            System.out.println("Domain config: "+updateResponse.domainConfig().toString());


        } catch (OpenSearchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
    
    /**
     * Deletes an Amazon OpenSearch Service domain. Deleting a domain can take
     * several minutes.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain that you want to delete
     */
    
    public static void deleteDomain(OpenSearchClient client, String domainName) {

        try {

            DeleteDomainRequest deleteRequest = DeleteDomainRequest.builder()
                    .domainName(domainName)
                    .build();

            System.out.println("Sending domain deletion request...");
            DeleteDomainResponse deleteResponse = client.deleteDomain(deleteRequest);
            System.out.println("Domain status: "+deleteResponse.toString());


        } catch (OpenSearchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
    
    /**
     * Waits for the domain to finish processing changes. New domains typically take 15-30 minutes
     * to initialize, but can take longer depending on the configuration. Most updates to existing domains
     * take a similar amount of time. This method checks every 15 seconds and finishes only when
     * the domain's processing status changes to false.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain that you want to check
     */
    
    public static void waitForDomainProcessing(OpenSearchClient client, String domainName) {
        // Create a new request to check the domain status.
        DescribeDomainRequest describeRequest = DescribeDomainRequest.builder()
                .domainName(domainName)
                .build();

        // Every 15 seconds, check whether the domain is processing.
        DescribeDomainResponse describeResponse = client.describeDomain(describeRequest);
        while (describeResponse.domainStatus().processing()) {
            try {
                System.out.println("Domain still processing...");
                TimeUnit.SECONDS.sleep(15);
                describeResponse = client.describeDomain(describeRequest);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        // Once we exit that loop, the domain is available
        System.out.println("Amazon OpenSearch Service has finished processing changes for your domain.");
        System.out.println("Domain description: "+describeResponse.toString());
    }
}

이 예시는 AWS SDK for Java의 버전 1에서 AWSElasticsearchClientBuilder 생성자를 사용하여 레거시 Elasticsearch 도메인을 생성하고, 도메인 구성을 업데이트하고, 도메인을 삭제합니다. waitForDomainProcessing에 대한 호출을 제거하여 (그리고 deleteDomain에 대한 호출을 언급하여) 해당 도메인이 온라인에 연결되어 사용 가능한 상태가 되도록 허용합니다.

package com.amazonaws.samples;

import java.util.concurrent.TimeUnit;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.elasticsearch.AWSElasticsearch;
import com.amazonaws.services.elasticsearch.AWSElasticsearchClientBuilder;
import com.amazonaws.services.elasticsearch.model.CreateElasticsearchDomainRequest;
import com.amazonaws.services.elasticsearch.model.CreateElasticsearchDomainResult;
import com.amazonaws.services.elasticsearch.model.DeleteElasticsearchDomainRequest;
import com.amazonaws.services.elasticsearch.model.DeleteElasticsearchDomainResult;
import com.amazonaws.services.elasticsearch.model.DescribeElasticsearchDomainRequest;
import com.amazonaws.services.elasticsearch.model.DescribeElasticsearchDomainResult;
import com.amazonaws.services.elasticsearch.model.EBSOptions;
import com.amazonaws.services.elasticsearch.model.ElasticsearchClusterConfig;
import com.amazonaws.services.elasticsearch.model.ResourceNotFoundException;
import com.amazonaws.services.elasticsearch.model.UpdateElasticsearchDomainConfigRequest;
import com.amazonaws.services.elasticsearch.model.UpdateElasticsearchDomainConfigResult;
import com.amazonaws.services.elasticsearch.model.VolumeType;

/**
 * Sample class demonstrating how to use the Amazon Web Services SDK for Java to create, update,
 * and delete Amazon OpenSearch Service domains.
 */

public class OpenSearchSample {

    public static void main(String[] args) {

        final String domainName = "my-test-domain";

        // Build the client using the default credentials chain.
        // You can use the CLI and run `aws configure` to set access key, secret
        // key, and default region.
        final AWSElasticsearch client = AWSElasticsearchClientBuilder
                .standard()
                // Unnecessary, but lets you use a region different than your default.
                .withRegion(Regions.US_WEST_2)
                // Unnecessary, but if desired, you can use a different provider chain.
                .withCredentials(new DefaultAWSCredentialsProviderChain())
                .build();

        // Create a new domain, update its configuration, and delete it.
        createDomain(client, domainName);
        // waitForDomainProcessing(client, domainName);
        updateDomain(client, domainName);
        // waitForDomainProcessing(client, domainName);
        deleteDomain(client, domainName);
    }

    /**
     * Creates an Amazon OpenSearch Service domain with the specified options.
     * Some options require other Amazon Web Services resources, such as an Amazon Cognito user pool
     * and identity pool, whereas others require just an instance type or instance
     * count.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain you want to create
     */
    private static void createDomain(final AWSElasticsearch client, final String domainName) {

        // Create the request and set the desired configuration options
        CreateElasticsearchDomainRequest createRequest = new CreateElasticsearchDomainRequest()
                .withDomainName(domainName)
                .withElasticsearchVersion("7.10")
                .withElasticsearchClusterConfig(new ElasticsearchClusterConfig()
                        .withDedicatedMasterEnabled(true)
                        .withDedicatedMasterCount(3)
                        // Small, inexpensive instance types for testing. Not recommended for production
                        // domains.
                        .withDedicatedMasterType("t2.small.elasticsearch")
                        .withInstanceType("t2.small.elasticsearch")
                        .withInstanceCount(5))
                // Many instance types require EBS storage.
                .withEBSOptions(new EBSOptions()
                        .withEBSEnabled(true)
                        .withVolumeSize(10)
                        .withVolumeType(VolumeType.Gp2));
                // You can uncomment this line and add your account ID, a username, and the
                // domain name to add an access policy.
                // .withAccessPolicies("{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam::123456789012:user/user-name\"]},\"Action\":[\"es:*\"],\"Resource\":\"arn:aws:es:region:123456789012:domain/domain-name/*\"}]}")
                

        // Make the request.
        System.out.println("Sending domain creation request...");
        CreateElasticsearchDomainResult createResponse = client.createElasticsearchDomain(createRequest);
        System.out.println("Domain creation response from Amazon OpenSearch Service:");
        System.out.println(createResponse.getDomainStatus().toString());
    }

    /**
     * Updates the configuration of an Amazon OpenSearch Service domain with the
     * specified options. Some options require other Amazon Web Services resources, such as an
     * Amazon Cognito user pool and identity pool, whereas others require just an
     * instance type or instance count.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain to update
     */
    private static void updateDomain(final AWSElasticsearch client, final String domainName) {
        try {
            // Updates the domain to use three data instances instead of five.
            // You can uncomment the Cognito lines and fill in the strings to enable Cognito
            // authentication for OpenSearch Dashboards.
            final UpdateElasticsearchDomainConfigRequest updateRequest = new UpdateElasticsearchDomainConfigRequest()
                    .withDomainName(domainName)
                    // .withCognitoOptions(new CognitoOptions()
                            // .withEnabled(true)
                            // .withUserPoolId("user-pool-id")
                            // .withIdentityPoolId("identity-pool-id")
                            // .withRoleArn("role-arn")
                    .withElasticsearchClusterConfig(new ElasticsearchClusterConfig()
                            .withInstanceCount(3));

            System.out.println("Sending domain update request...");
            final UpdateElasticsearchDomainConfigResult updateResponse = client
                    .updateElasticsearchDomainConfig(updateRequest);
            System.out.println("Domain update response from Amazon OpenSearch Service:");
            System.out.println(updateResponse.toString());
        } catch (ResourceNotFoundException e) {
            System.out.println("Domain not found. Please check the domain name.");
        }
    }

    /**
     * Deletes an Amazon OpenSearch Service domain. Deleting a domain can take
     * several minutes.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain that you want to delete
     */
    private static void deleteDomain(final AWSElasticsearch client, final String domainName) {
        try {
            final DeleteElasticsearchDomainRequest deleteRequest = new DeleteElasticsearchDomainRequest()
                    .withDomainName(domainName);

            System.out.println("Sending domain deletion request...");
            final DeleteElasticsearchDomainResult deleteResponse = client.deleteElasticsearchDomain(deleteRequest);
            System.out.println("Domain deletion response from Amazon OpenSearch Service:");
            System.out.println(deleteResponse.toString());
        } catch (ResourceNotFoundException e) {
            System.out.println("Domain not found. Please check the domain name.");
        }
    }

    /**
     * Waits for the domain to finish processing changes. New domains typically take 15-30 minutes
     * to initialize, but can take longer depending on the configuration. Most updates to existing domains
     * take a similar amount of time. This method checks every 15 seconds and finishes only when
     * the domain's processing status changes to false.
     *
     * @param client
     *            The client to use for the requests to Amazon OpenSearch Service
     * @param domainName
     *            The name of the domain that you want to check
     */
    private static void waitForDomainProcessing(final AWSElasticsearch client, final String domainName) {
        // Create a new request to check the domain status.
        final DescribeElasticsearchDomainRequest describeRequest = new DescribeElasticsearchDomainRequest()
                .withDomainName(domainName);

        // Every 15 seconds, check whether the domain is processing.
        DescribeElasticsearchDomainResult describeResponse = client.describeElasticsearchDomain(describeRequest);
        while (describeResponse.getDomainStatus().isProcessing()) {
            try {
                System.out.println("Domain still processing...");
                TimeUnit.SECONDS.sleep(15);
                describeResponse = client.describeElasticsearchDomain(describeRequest);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        // Once we exit that loop, the domain is available
        System.out.println("Amazon OpenSearch Service has finished processing changes for your domain.");
        System.out.println("Domain description response from Amazon OpenSearch Service:");
        System.out.println(describeResponse.toString());
    }
}