AWS SDK 또는 CLI와 함께 DescribeDBClusters 사용 - Amazon Aurora

AWS SDK 또는 CLI와 함께 DescribeDBClusters 사용

다음 코드 예시는 DescribeDBClusters의 사용 방법을 보여줍니다.

작업 예제는 대규모 프로그램에서 발췌한 코드이며 컨텍스트에 맞춰 실행해야 합니다. 다음 코드 예제에서는 컨텍스트 내에서 이 작업을 확인할 수 있습니다.

.NET
AWS SDK for .NET
참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예제 리포지토리에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

/// <summary> /// Returns a list of DB clusters. /// </summary> /// <param name="dbInstanceIdentifier">Optional name of a specific DB cluster.</param> /// <returns>List of DB clusters.</returns> public async Task<List<DBCluster>> DescribeDBClustersPagedAsync(string? dbClusterIdentifier = null) { var results = new List<DBCluster>(); DescribeDBClustersResponse response; DescribeDBClustersRequest request = new DescribeDBClustersRequest { DBClusterIdentifier = dbClusterIdentifier }; // Get the full list if there are multiple pages. do { response = await _amazonRDS.DescribeDBClustersAsync(request); results.AddRange(response.DBClusters); request.Marker = response.Marker; } while (response.Marker is not null); return results; }
  • API 세부 정보는 AWS SDK for .NET API 참조DescribeDBClusters를 참조하십시오.

C++
SDK for C++
참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예제 리포지토리에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region (overrides config file). // clientConfig.region = "us-east-1"; Aws::RDS::RDSClient client(clientConfig); //! Routine which gets a DB cluster description. /*! \sa describeDBCluster() \param dbClusterIdentifier: A DB cluster identifier. \param clusterResult: The 'DBCluster' object containing the description. \param client: 'RDSClient' instance. \return bool: Successful completion. */ bool AwsDoc::Aurora::describeDBCluster(const Aws::String &dbClusterIdentifier, Aws::RDS::Model::DBCluster &clusterResult, const Aws::RDS::RDSClient &client) { Aws::RDS::Model::DescribeDBClustersRequest request; request.SetDBClusterIdentifier(dbClusterIdentifier); Aws::RDS::Model::DescribeDBClustersOutcome outcome = client.DescribeDBClusters(request); bool result = true; if (outcome.IsSuccess()) { clusterResult = outcome.GetResult().GetDBClusters()[0]; } else if (outcome.GetError().GetErrorType() != Aws::RDS::RDSErrors::D_B_CLUSTER_NOT_FOUND_FAULT) { result = false; std::cerr << "Error with Aurora::GDescribeDBClusters. " << outcome.GetError().GetMessage() << std::endl; } // This example does not log an error if the DB cluster does not exist. // Instead, clusterResult is set to empty. else { clusterResult = Aws::RDS::Model::DBCluster(); } return result; }
  • API 세부 정보는 AWS SDK for C++ API 참조DescribeDBClusters를 참조하십시오.

Go
SDK for Go V2
참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예제 리포지토리에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

type DbClusters struct { AuroraClient *rds.Client } // GetDbCluster gets data about an Aurora DB cluster. func (clusters *DbClusters) GetDbCluster(clusterName string) (*types.DBCluster, error) { output, err := clusters.AuroraClient.DescribeDBClusters(context.TODO(), &rds.DescribeDBClustersInput{ DBClusterIdentifier: aws.String(clusterName), }) if err != nil { var notFoundError *types.DBClusterNotFoundFault if errors.As(err, &notFoundError) { log.Printf("DB cluster %v does not exist.\n", clusterName) err = nil } else { log.Printf("Couldn't get DB cluster %v: %v\n", clusterName, err) } return nil, err } else { return &output.DBClusters[0], err } }
  • API 세부 정보는 AWS SDK for Go API 참조DescribeDBClusters를 참조하십시오.

Java
SDK for Java 2.x
참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예제 리포지토리에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

public static void describeDbClusterParameters(RdsClient rdsClient, String dbCLusterGroupName, int flag) { try { DescribeDbClusterParametersRequest dbParameterGroupsRequest; if (flag == 0) { dbParameterGroupsRequest = DescribeDbClusterParametersRequest.builder() .dbClusterParameterGroupName(dbCLusterGroupName) .build(); } else { dbParameterGroupsRequest = DescribeDbClusterParametersRequest.builder() .dbClusterParameterGroupName(dbCLusterGroupName) .source("user") .build(); } DescribeDbClusterParametersResponse response = rdsClient .describeDBClusterParameters(dbParameterGroupsRequest); List<Parameter> dbParameters = response.parameters(); String paraName; for (Parameter para : dbParameters) { // Only print out information about either auto_increment_offset or // auto_increment_increment. paraName = para.parameterName(); if ((paraName.compareTo("auto_increment_offset") == 0) || (paraName.compareTo("auto_increment_increment ") == 0)) { System.out.println("*** The parameter name is " + paraName); System.out.println("*** The parameter value is " + para.parameterValue()); System.out.println("*** The parameter data type is " + para.dataType()); System.out.println("*** The parameter description is " + para.description()); System.out.println("*** The parameter allowed values is " + para.allowedValues()); } } } catch (RdsException e) { System.out.println(e.getLocalizedMessage()); System.exit(1); } }
  • API 세부 정보는 AWS SDK for Java 2.x API 참조DescribeDBClusters를 참조하십시오.

Kotlin
SDK for Kotlin
참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예제 리포지토리에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

suspend fun describeDbClusterParameters(dbCLusterGroupName: String?, flag: Int) { val dbParameterGroupsRequest: DescribeDbClusterParametersRequest dbParameterGroupsRequest = if (flag == 0) { DescribeDbClusterParametersRequest { dbClusterParameterGroupName = dbCLusterGroupName } } else { DescribeDbClusterParametersRequest { dbClusterParameterGroupName = dbCLusterGroupName source = "user" } } RdsClient { region = "us-west-2" }.use { rdsClient -> val response = rdsClient.describeDbClusterParameters(dbParameterGroupsRequest) response.parameters?.forEach { para -> // Only print out information about either auto_increment_offset or auto_increment_increment. val paraName = para.parameterName if (paraName != null) { if (paraName.compareTo("auto_increment_offset") == 0 || paraName.compareTo("auto_increment_increment ") == 0) { println("*** The parameter name is $paraName") println("*** The parameter value is ${para.parameterValue}") println("*** The parameter data type is ${para.dataType}") println("*** The parameter description is ${para.description}") println("*** The parameter allowed values is ${para.allowedValues}") } } } } }
  • API 세부 정보는 AWS SDK for Kotlin API 참조DescribeDBClusters를 참조하십시오.

Python
SDK for Python (Boto3)
참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예제 리포지토리에서 전체 예제를 찾고 설정 및 실행하는 방법을 배워보세요.

class AuroraWrapper: """Encapsulates Aurora DB cluster actions.""" def __init__(self, rds_client): """ :param rds_client: A Boto3 Amazon Relational Database Service (Amazon RDS) client. """ self.rds_client = rds_client @classmethod def from_client(cls): """ Instantiates this class from a Boto3 client. """ rds_client = boto3.client("rds") return cls(rds_client) def get_db_cluster(self, cluster_name): """ Gets data about an Aurora DB cluster. :param cluster_name: The name of the DB cluster to retrieve. :return: The retrieved DB cluster. """ try: response = self.rds_client.describe_db_clusters( DBClusterIdentifier=cluster_name ) cluster = response["DBClusters"][0] except ClientError as err: if err.response["Error"]["Code"] == "DBClusterNotFoundFault": logger.info("Cluster %s does not exist.", cluster_name) else: logger.error( "Couldn't verify the existence of DB cluster %s. Here's why: %s: %s", cluster_name, err.response["Error"]["Code"], err.response["Error"]["Message"], ) raise else: return cluster
  • API 세부 정보는 AWSSDK for Python (Boto3) API 참조DescribeDBClusters를 참조하십시오.

Rust
SDK for Rust
참고

GitHub에 더 많은 내용이 있습니다. AWS코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

// Get a list of allowed engine versions. rds.DescribeDbEngineVersions(Engine='aurora-mysql', DBParameterGroupFamily=<the family used to create your parameter group in step 2>) // Create an Aurora DB cluster database cluster that contains a MySql database and uses the parameter group you created. // Wait for DB cluster to be ready. Call rds.DescribeDBClusters and check for Status == 'available'. // Get a list of instance classes available for the selected engine and engine version. rds.DescribeOrderableDbInstanceOptions(Engine='mysql', EngineVersion=). // Create a database instance in the cluster. // Wait for DB instance to be ready. Call rds.DescribeDbInstances and check for DBInstanceStatus == 'available'. pub async fn start_cluster_and_instance(&mut self) -> Result<(), ScenarioError> { if self.password.is_none() { return Err(ScenarioError::with( "Must set Secret Password before starting a cluster", )); } let create_db_cluster = self .rds .create_db_cluster( DB_CLUSTER_IDENTIFIER, DB_CLUSTER_PARAMETER_GROUP_NAME, DB_ENGINE, self.engine_version.as_deref().expect("engine version"), self.username.as_deref().expect("username"), self.password .replace(SecretString::new("".to_string())) .expect("password"), ) .await; if let Err(err) = create_db_cluster { return Err(ScenarioError::new( "Failed to create DB Cluster with cluster group", &err, )); } self.db_cluster_identifier = create_db_cluster .unwrap() .db_cluster .and_then(|c| c.db_cluster_identifier); if self.db_cluster_identifier.is_none() { return Err(ScenarioError::with("Created DB Cluster missing Identifier")); } info!( "Started a db cluster: {}", self.db_cluster_identifier .as_deref() .unwrap_or("Missing ARN") ); let create_db_instance = self .rds .create_db_instance( self.db_cluster_identifier.as_deref().expect("cluster name"), DB_INSTANCE_IDENTIFIER, self.instance_class.as_deref().expect("instance class"), DB_ENGINE, ) .await; if let Err(err) = create_db_instance { return Err(ScenarioError::new( "Failed to create Instance in DB Cluster", &err, )); } self.db_instance_identifier = create_db_instance .unwrap() .db_instance .and_then(|i| i.db_instance_identifier); // Cluster creation can take up to 20 minutes to become available let cluster_max_wait = Duration::from_secs(20 * 60); let waiter = Waiter::builder().max(cluster_max_wait).build(); while waiter.sleep().await.is_ok() { let cluster = self .rds .describe_db_clusters( self.db_cluster_identifier .as_deref() .expect("cluster identifier"), ) .await; if let Err(err) = cluster { warn!(?err, "Failed to describe cluster while waiting for ready"); continue; } let instance = self .rds .describe_db_instance( self.db_instance_identifier .as_deref() .expect("instance identifier"), ) .await; if let Err(err) = instance { return Err(ScenarioError::new( "Failed to find instance for cluster", &err, )); } let instances_available = instance .unwrap() .db_instances() .iter() .all(|instance| instance.db_instance_status() == Some("Available")); let endpoints = self .rds .describe_db_cluster_endpoints( self.db_cluster_identifier .as_deref() .expect("cluster identifier"), ) .await; if let Err(err) = endpoints { return Err(ScenarioError::new( "Failed to find endpoint for cluster", &err, )); } let endpoints_available = endpoints .unwrap() .db_cluster_endpoints() .iter() .all(|endpoint| endpoint.status() == Some("available")); if instances_available && endpoints_available { return Ok(()); } } Err(ScenarioError::with("timed out waiting for cluster")) } pub async fn describe_db_clusters( &self, id: &str, ) -> Result<DescribeDbClustersOutput, SdkError<DescribeDBClustersError>> { self.inner .describe_db_clusters() .db_cluster_identifier(id) .send() .await } #[tokio::test] async fn test_start_cluster_and_instance() { let mut mock_rds = MockRdsImpl::default(); mock_rds .expect_create_db_cluster() .withf(|id, params, engine, version, username, password| { assert_eq!(id, "RustSDKCodeExamplesDBCluster"); assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup"); assert_eq!(engine, "aurora-mysql"); assert_eq!(version, "aurora-mysql8.0"); assert_eq!(username, "test username"); assert_eq!(password.expose_secret(), "test password"); true }) .return_once(|id, _, _, _, _, _| { Ok(CreateDbClusterOutput::builder() .db_cluster(DbCluster::builder().db_cluster_identifier(id).build()) .build()) }); mock_rds .expect_create_db_instance() .withf(|cluster, name, class, engine| { assert_eq!(cluster, "RustSDKCodeExamplesDBCluster"); assert_eq!(name, "RustSDKCodeExamplesDBInstance"); assert_eq!(class, "m5.large"); assert_eq!(engine, "aurora-mysql"); true }) .return_once(|cluster, name, class, _| { Ok(CreateDbInstanceOutput::builder() .db_instance( DbInstance::builder() .db_cluster_identifier(cluster) .db_instance_identifier(name) .db_instance_class(class) .build(), ) .build()) }); mock_rds .expect_describe_db_clusters() .with(eq("RustSDKCodeExamplesDBCluster")) .return_once(|id| { Ok(DescribeDbClustersOutput::builder() .db_clusters(DbCluster::builder().db_cluster_identifier(id).build()) .build()) }); mock_rds .expect_describe_db_instance() .with(eq("RustSDKCodeExamplesDBInstance")) .return_once(|name| { Ok(DescribeDbInstancesOutput::builder() .db_instances( DbInstance::builder() .db_instance_identifier(name) .db_instance_status("Available") .build(), ) .build()) }); mock_rds .expect_describe_db_cluster_endpoints() .with(eq("RustSDKCodeExamplesDBCluster")) .return_once(|_| { Ok(DescribeDbClusterEndpointsOutput::builder() .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build()) .build()) }); let mut scenario = AuroraScenario::new(mock_rds); scenario.engine_version = Some("aurora-mysql8.0".into()); scenario.instance_class = Some("m5.large".into()); scenario.username = Some("test username".into()); scenario.password = Some(SecretString::new("test password".into())); tokio::time::pause(); let assertions = tokio::spawn(async move { let create = scenario.start_cluster_and_instance().await; assert!(create.is_ok()); assert!(scenario .password .replace(SecretString::new("BAD SECRET".into())) .unwrap() .expose_secret() .is_empty()); assert_eq!( scenario.db_cluster_identifier, Some("RustSDKCodeExamplesDBCluster".into()) ); }); tokio::time::advance(Duration::from_secs(1)).await; tokio::time::resume(); let _ = assertions.await; } #[tokio::test] async fn test_start_cluster_and_instance_cluster_create_error() { let mut mock_rds = MockRdsImpl::default(); mock_rds .expect_create_db_cluster() .return_once(|_, _, _, _, _, _| { Err(SdkError::service_error( CreateDBClusterError::unhandled(Box::new(Error::new( ErrorKind::Other, "create db cluster error", ))), Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()), )) }); let mut scenario = AuroraScenario::new(mock_rds); scenario.engine_version = Some("aurora-mysql8.0".into()); scenario.instance_class = Some("m5.large".into()); scenario.username = Some("test username".into()); scenario.password = Some(SecretString::new("test password".into())); let create = scenario.start_cluster_and_instance().await; assert_matches!(create, Err(ScenarioError { message, context: _}) if message == "Failed to create DB Cluster with cluster group") } #[tokio::test] async fn test_start_cluster_and_instance_cluster_create_missing_id() { let mut mock_rds = MockRdsImpl::default(); mock_rds .expect_create_db_cluster() .return_once(|_, _, _, _, _, _| { Ok(CreateDbClusterOutput::builder() .db_cluster(DbCluster::builder().build()) .build()) }); let mut scenario = AuroraScenario::new(mock_rds); scenario.engine_version = Some("aurora-mysql8.0".into()); scenario.instance_class = Some("m5.large".into()); scenario.username = Some("test username".into()); scenario.password = Some(SecretString::new("test password".into())); let create = scenario.start_cluster_and_instance().await; assert_matches!(create, Err(ScenarioError { message, context:_ }) if message == "Created DB Cluster missing Identifier"); } #[tokio::test] async fn test_start_cluster_and_instance_instance_create_error() { let mut mock_rds = MockRdsImpl::default(); mock_rds .expect_create_db_cluster() .withf(|id, params, engine, version, username, password| { assert_eq!(id, "RustSDKCodeExamplesDBCluster"); assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup"); assert_eq!(engine, "aurora-mysql"); assert_eq!(version, "aurora-mysql8.0"); assert_eq!(username, "test username"); assert_eq!(password.expose_secret(), "test password"); true }) .return_once(|id, _, _, _, _, _| { Ok(CreateDbClusterOutput::builder() .db_cluster(DbCluster::builder().db_cluster_identifier(id).build()) .build()) }); mock_rds .expect_create_db_instance() .return_once(|_, _, _, _| { Err(SdkError::service_error( CreateDBInstanceError::unhandled(Box::new(Error::new( ErrorKind::Other, "create db instance error", ))), Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()), )) }); let mut scenario = AuroraScenario::new(mock_rds); scenario.engine_version = Some("aurora-mysql8.0".into()); scenario.instance_class = Some("m5.large".into()); scenario.username = Some("test username".into()); scenario.password = Some(SecretString::new("test password".into())); let create = scenario.start_cluster_and_instance().await; assert_matches!(create, Err(ScenarioError { message, context: _ }) if message == "Failed to create Instance in DB Cluster") } #[tokio::test] async fn test_start_cluster_and_instance_wait_hiccup() { let mut mock_rds = MockRdsImpl::default(); mock_rds .expect_create_db_cluster() .withf(|id, params, engine, version, username, password| { assert_eq!(id, "RustSDKCodeExamplesDBCluster"); assert_eq!(params, "RustSDKCodeExamplesDBParameterGroup"); assert_eq!(engine, "aurora-mysql"); assert_eq!(version, "aurora-mysql8.0"); assert_eq!(username, "test username"); assert_eq!(password.expose_secret(), "test password"); true }) .return_once(|id, _, _, _, _, _| { Ok(CreateDbClusterOutput::builder() .db_cluster(DbCluster::builder().db_cluster_identifier(id).build()) .build()) }); mock_rds .expect_create_db_instance() .withf(|cluster, name, class, engine| { assert_eq!(cluster, "RustSDKCodeExamplesDBCluster"); assert_eq!(name, "RustSDKCodeExamplesDBInstance"); assert_eq!(class, "m5.large"); assert_eq!(engine, "aurora-mysql"); true }) .return_once(|cluster, name, class, _| { Ok(CreateDbInstanceOutput::builder() .db_instance( DbInstance::builder() .db_cluster_identifier(cluster) .db_instance_identifier(name) .db_instance_class(class) .build(), ) .build()) }); mock_rds .expect_describe_db_clusters() .with(eq("RustSDKCodeExamplesDBCluster")) .times(1) .returning(|_| { Err(SdkError::service_error( DescribeDBClustersError::unhandled(Box::new(Error::new( ErrorKind::Other, "describe cluster error", ))), Response::new(StatusCode::try_from(400).unwrap(), SdkBody::empty()), )) }) .with(eq("RustSDKCodeExamplesDBCluster")) .times(1) .returning(|id| { Ok(DescribeDbClustersOutput::builder() .db_clusters(DbCluster::builder().db_cluster_identifier(id).build()) .build()) }); mock_rds.expect_describe_db_instance().return_once(|name| { Ok(DescribeDbInstancesOutput::builder() .db_instances( DbInstance::builder() .db_instance_identifier(name) .db_instance_status("Available") .build(), ) .build()) }); mock_rds .expect_describe_db_cluster_endpoints() .return_once(|_| { Ok(DescribeDbClusterEndpointsOutput::builder() .db_cluster_endpoints(DbClusterEndpoint::builder().status("available").build()) .build()) }); let mut scenario = AuroraScenario::new(mock_rds); scenario.engine_version = Some("aurora-mysql8.0".into()); scenario.instance_class = Some("m5.large".into()); scenario.username = Some("test username".into()); scenario.password = Some(SecretString::new("test password".into())); tokio::time::pause(); let assertions = tokio::spawn(async move { let create = scenario.start_cluster_and_instance().await; assert!(create.is_ok()); }); tokio::time::advance(Duration::from_secs(1)).await; tokio::time::advance(Duration::from_secs(1)).await; tokio::time::resume(); let _ = assertions.await; }
  • API 세부 정보는 AWS SDK for Rust API 참조의 DescribeDBClusters를 참조하세요.

AWS SDK 개발자 가이드 및 코드 예시의 전체 목록은 AWS SDK와 함께 이 서비스 사용 단원을 참조하세요. 이 주제에는 시작하기에 대한 정보와 이전 SDK 버전에 대한 세부 정보도 포함되어 있습니다.