GetCertificate

次の Java サンプルは、 GetCertificateオペレーションの使用方法を示しています。

このオペレーションは、プライベート CA から証明書を取得します。IssueCertificate オペレーションを呼び出すと、証明書の ARN が返されます。GetCertificate オペレーションを呼び出すときは、プライベート CA の ARN と、発行済み証明書の ARN の両方を指定する必要があります。ISSUED 状態の場合は、証明書を取得できます。CreateCertificateAuthorityAuditReport オペレーションを呼び出して、プライベート CA によって発行および取り消されたすべての証明書に関する情報を含むレポートを作成できます。

package com.amazonaws.samples;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.client.builder.AwsClientBuilder.EndpointConfiguration;
import com.amazonaws.auth.AWSStaticCredentialsProvider;

import com.amazonaws.services.acmpca.AWSACMPCA;
import com.amazonaws.services.acmpca.AWSACMPCAClientBuilder;

import com.amazonaws.services.acmpca.model.GetCertificateRequest;
import com.amazonaws.services.acmpca.model.GetCertificateResult;

import com.amazonaws.AmazonClientException;
import com.amazonaws.services.acmpca.model.RequestInProgressException;
import com.amazonaws.services.acmpca.model.RequestFailedException ;
import com.amazonaws.services.acmpca.model.ResourceNotFoundException;
import com.amazonaws.services.acmpca.model.InvalidArnException;
import com.amazonaws.services.acmpca.model.InvalidStateException;

import com.amazonaws.waiters.Waiter;
import com.amazonaws.waiters.WaiterParameters;
import com.amazonaws.waiters.WaiterTimedOutException;
import com.amazonaws.waiters.WaiterUnrecoverableException;

import com.amazonaws.services.acmpca.model.AWSACMPCAException;

public class GetCertificate {

   public static void main(String[] args) throws Exception{

      // Retrieve your credentials from the C:\Users\name\.aws\credentials file
      // in Windows or the .aws/credentials file in Linux.
      AWSCredentials credentials = null;
      try {
         credentials = new ProfileCredentialsProvider("default").getCredentials();
      } catch (Exception e) {
         throw new AmazonClientException("Cannot load your credentials from disk", e);
      }

      // Define the endpoint for your sample.
      String endpointRegion = "region";  // Substitute your region here, e.g. "us-west-2"
      String endpointProtocol = "https://acm-pca." + endpointRegion + ".amazonaws.com/";
      EndpointConfiguration endpoint =
            new AwsClientBuilder.EndpointConfiguration(endpointProtocol, endpointRegion);

      // Create a client.
      AWSACMPCA client = AWSACMPCAClientBuilder.standard()
         .withEndpointConfiguration(endpoint)
         .withCredentials(new AWSStaticCredentialsProvider(credentials))
         .build();
         
      // Create a request object.
      GetCertificateRequest req = new GetCertificateRequest();

      // Set the certificate ARN.
      req.withCertificateArn("arn:aws:acm-pca:region:account:certificate-authority/CA_ID/certificate/certificate_ID");

      // Set the certificate authority ARN.
      req.withCertificateAuthorityArn("arn:aws:acm-pca:us-east-1:111122223333:certificate-authority/11223344-1234-1122-2233-112233445566");
            
      // Create waiter to wait on successful creation of the certificate file.
      Waiter<GetCertificateRequest> waiter = client.waiters().certificateIssued();
      try {
         waiter.run(new WaiterParameters<>(req));
      } catch (WaiterUnrecoverableException e) {
          //Explicit short circuit when the recourse transitions into
          //an undesired state.
      } catch (WaiterTimedOutException e) {
          //Failed to transition into desired state even after polling.
      } catch (AWSACMPCAException e) {
          //Unexpected service exception.
      }

      // Retrieve the certificate and certificate chain.
      GetCertificateResult result = null;
      try {
         result = client.getCertificate(req);
      } catch (RequestInProgressException ex) {
         throw ex;
      } catch (RequestFailedException ex) {
         throw ex;
      } catch (ResourceNotFoundException ex) {
         throw ex;
      } catch (InvalidArnException ex) {
         throw ex;
      } catch (InvalidStateException ex) {
         throw ex;
      }

      // Get the certificate and certificate chain and display the result.
      String strCert = result.getCertificate();
      System.out.println(strCert);
   }
}

出力は、指定した認証機関 (CA) および証明書について、以下に類似した証明書チェーンになります。

-----BEGIN CERTIFICATE----- base64-encoded certificate -----END CERTIFICATE-----

-----BEGIN CERTIFICATE----- base64-encoded certificate -----END CERTIFICATE-----

-----BEGIN CERTIFICATE----- base64-encoded certificate -----END CERTIFICATE-----