文档 AWS SDK 示例 GitHub 存储库中还有更多 [S AWS DK 示例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。

# 使用 SDK for Python (Boto3) 的应用程序恢复控制器示例
<a name="python_3_route53-recovery-cluster_code_examples"></a>

以下代码示例向您展示了如何通过 适用于 Python (Boto3) 的 AWS SDK 与应用程序恢复控制器一起使用来执行操作和实现常见场景。

*操作*是大型程序的代码摘录，必须在上下文中运行。您可以通过操作了解如何调用单个服务函数，还可以通过函数相关场景的上下文查看操作。

每个示例都包含一个指向完整源代码的链接，您可以从中找到有关如何在上下文中设置和运行代码的说明。

**Topics**
+ [操作](#actions)

## 操作
<a name="actions"></a>

### `GetRoutingControlState`
<a name="route53-recovery-cluster_GetRoutingControlState_python_3_topic"></a>

以下代码示例演示了如何使用 `GetRoutingControlState`。

**适用于 Python 的 SDK（Boto3）**  
 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/route53-recovery-cluster#code-examples)中查找完整示例，了解如何进行设置和运行。

```
import boto3


def create_recovery_client(cluster_endpoint):
    """
    Creates a Boto3 Route 53 Application Recovery Controller client for the specified
    cluster endpoint URL and AWS Region.

    :param cluster_endpoint: The cluster endpoint URL and Region.
    :return: The Boto3 client.
    """
    return boto3.client(
        "route53-recovery-cluster",
        endpoint_url=cluster_endpoint["Endpoint"],
        region_name=cluster_endpoint["Region"],
    )



def get_routing_control_state(routing_control_arn, cluster_endpoints):
    """
    Gets the state of a routing control. Cluster endpoints are tried in
    sequence until the first successful response is received.

    :param routing_control_arn: The ARN of the routing control to look up.
    :param cluster_endpoints: The list of cluster endpoints to query.
    :return: The routing control state response.
    """

    # As a best practice, we recommend choosing a random cluster endpoint to get or set routing control states.
    # For more information, see https://docs.aws.amazon.com/r53recovery/latest/dg/route53-arc-best-practices.html#route53-arc-best-practices.regional
    random.shuffle(cluster_endpoints)
    for cluster_endpoint in cluster_endpoints:
        try:
            recovery_client = create_recovery_client(cluster_endpoint)
            response = recovery_client.get_routing_control_state(
                RoutingControlArn=routing_control_arn
            )
            return response
        except Exception as error:
            print(error)
            raise error
```
+  有关 API 的详细信息，请参阅适用[GetRoutingControlState](https://docs.aws.amazon.com/goto/boto3/route53-recovery-cluster-2019-12-02/GetRoutingControlState)于 *Python 的AWS SDK (Boto3) API 参考*。

### `UpdateRoutingControlState`
<a name="route53-recovery-cluster_UpdateRoutingControlState_python_3_topic"></a>

以下代码示例演示了如何使用 `UpdateRoutingControlState`。

**适用于 Python 的 SDK（Boto3）**  
 还有更多相关信息 GitHub。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/route53-recovery-cluster#code-examples)中查找完整示例，了解如何进行设置和运行。

```
import boto3


def create_recovery_client(cluster_endpoint):
    """
    Creates a Boto3 Route 53 Application Recovery Controller client for the specified
    cluster endpoint URL and AWS Region.

    :param cluster_endpoint: The cluster endpoint URL and Region.
    :return: The Boto3 client.
    """
    return boto3.client(
        "route53-recovery-cluster",
        endpoint_url=cluster_endpoint["Endpoint"],
        region_name=cluster_endpoint["Region"],
    )



def update_routing_control_state(
    routing_control_arn, cluster_endpoints, routing_control_state
):
    """
    Updates the state of a routing control. Cluster endpoints are tried in
    sequence until the first successful response is received.

    :param routing_control_arn: The ARN of the routing control to update the state for.
    :param cluster_endpoints: The list of cluster endpoints to try.
    :param routing_control_state: The new routing control state.
    :return: The routing control update response.
    """

    # As a best practice, we recommend choosing a random cluster endpoint to get or set routing control states.
    # For more information, see https://docs.aws.amazon.com/r53recovery/latest/dg/route53-arc-best-practices.html#route53-arc-best-practices.regional
    random.shuffle(cluster_endpoints)
    for cluster_endpoint in cluster_endpoints:
        try:
            recovery_client = create_recovery_client(cluster_endpoint)
            response = recovery_client.update_routing_control_state(
                RoutingControlArn=routing_control_arn,
                RoutingControlState=routing_control_state,
            )
            return response
        except Exception as error:
            print(error)
```
+  有关 API 的详细信息，请参阅适用[UpdateRoutingControlState](https://docs.aws.amazon.com/goto/boto3/route53-recovery-cluster-2019-12-02/UpdateRoutingControlState)于 *Python 的AWS SDK (Boto3) API 参考*。