Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Errors Examples See Also

GetLatestConfiguration

Retrieves the latest deployed configuration. This API may return empty configuration data if the client already has the latest version. For more information about this API action and to view example AWS CLI commands that show how to use it with the StartConfigurationSession API action, see Retrieving feature flags and configuration data in AWS AppConfig in the AWS AppConfig User Guide.

Important

Note the following important information.

Each configuration token is only valid for one call to GetLatestConfiguration. The GetLatestConfiguration response includes a NextPollConfigurationToken that should always replace the token used for the just-completed call in preparation for the next one.
GetLatestConfiguration is a priced call. For more information, see Pricing.
You can configure applications to retrieve configuration data from a local cache rather than directly calling AWS AppConfig. Caching can improve performance and reduce costs. You can use the AWS AppConfig AWS Lambda extension to cache data on your behalf. For more information, see AWS AppConfig integration with Lambda extensions in the AWS AppConfig User Guide.

For containerized environments, you can use the AWS AppConfig agent for Amazon Elastic Container Service or Amazon Elastic Kubernetes Service. For more information, see AWS AppConfig integration with Amazon ECS and Amazon EKS.

Request Syntax


GET /configuration?configuration_token=ConfigurationToken HTTP/1.1

URI Request Parameters

The request uses the following URI parameters.

ConfigurationToken

Token describing the current state of the configuration session. To obtain a token, first call the StartConfigurationSession API. Note that every call to GetLatestConfiguration will return a new ConfigurationToken (NextPollConfigurationToken in the response) and must be provided to subsequent GetLatestConfiguration API calls.

Important

This token should only be used once. To support long poll use cases, the token is valid for up to 24 hours. If a GetLatestConfiguration call uses an expired token, the system returns BadRequestException.

Pattern: \S{1,8192}

Required: Yes

Request Body

The request does not have a request body.

Response Syntax


HTTP/1.1 200
Next-Poll-Configuration-Token: NextPollConfigurationToken
Next-Poll-Interval-In-Seconds: NextPollIntervalInSeconds
Content-Type: ContentType
Version-Label: VersionLabel

Configuration

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The response returns the following HTTP headers.

ContentType

A standard MIME type describing the format of the configuration content.

NextPollConfigurationToken

The latest token describing the current state of the configuration session. This must be provided to the next call to GetLatestConfiguration.

Important

Pattern: \S{1,8192}

NextPollIntervalInSeconds

The amount of time the client should wait before polling for configuration updates again. The default value is 60 seconds. If you specify a value for RequiredMinimumPollIntervalInSeconds, the service uses the specified value for the desired poll interval instead.

VersionLabel

The user-defined label for the AWS AppConfig hosted configuration version. This attribute doesn't apply if the configuration is not from an AWS AppConfig hosted configuration version. If the client already has the latest version of the configuration data, this value is empty.

The response returns the following as the HTTP body.

Configuration: The data of the configuration. This may be empty if the client already has the latest version of configuration.

Errors

For information about the errors that are common to all actions, see Common Errors.

BadRequestException

The input fails to satisfy the constraints specified by the service.

HTTP Status Code: 400

InternalServerException

There was an internal failure in the service.

HTTP Status Code: 500

ResourceNotFoundException

The requested resource could not be found.

HTTP Status Code: 404

ThrottlingException

The request was denied due to request throttling.

HTTP Status Code: 429

Examples

Example

This example illustrates one usage of GetLatestConfiguration.

Sample Request


GET /configuration?configuration_token=AYADeNgfsRxdKiJ37A12OZ9vN2cAXwABABVhd3MtY3J5cHRvLXB1YmxpYy1rZXkAREF1RzlLMTg1Tkx2Wjk4OGV2UXkyQ1UxV2ZxaGJTdkt2MkprKzJ4TlY2VkM0ZDVoRzBvbXFBTnFHcXpXcjU0dUM3Zz09AAEAB2F3cy1rbXMAS2Fybjphd3M6a21zOnVzLXdlc3QtMTo4MzIyNzQ3ODA3Mzc6a2V5LzA4MGYxYWI3LTNjNmYtNGE1Yi04ZTg2LWE2MjdmNWJiMmRlMQC4AQIBAHiWVBJIpqEFGgjvLHxtJImRmyljpZnxt7FfxeEOE5H8xQF1SfOlWZFnHujbzJmIvNeSAAAAfjB8BgkqhkiG9w0BBwagbzBtAgEAMGgGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQM0iTa25yw3uwnO6%2BrAgEQgDvLYYILWH%2Fx3SKKgyW1nOeBtS6go21vVPA6b8%2FwoFpxhzwjxy80jOfkVC2lM2l626BnJCvSPFfuZvcz%2FQIAAAAADAAAEAAAAAAAAAAAAAAAAADpQpWKSwnomgzEkYmidGKJ%2F%2F%2F%2F%2FwAAAAEAAAAAAAAAAAAAAAEAAAD8yfxkWB0geYfyI%2BDNJGiryebhmEoi8S8UHZSNN5JjJzTN2iORkjrA3DVvnhBTfoPh7o5bl4jwSYa%2F6as%2BmuQ9ntjYwymTZu7inYhsICYUKEDFxonBFJaEC32jEfg%2FMbPaGLOhNHdISiPAlMlOYmsw7phgl6ldbs9qrKVLlk1WNO3XTJiXyaWY4ANMfAX2JgMbGvNNY3HbfUneDGOENg6IfwKDykELIrJ6feE0JyKOV7mXfp%2F0r2pNiW9d6q%2BWDD1w4T87gCxgUGEPB%2FJ7JG3RhpGvECUmgKA0T06MjA7kWdt2IofDaLzRppFGpgLoPmxpM4qHz%2Fw6dMDmeXybKNZP84UP12zsJtUMhuspEQBnMGUCMQD8ssc6G8e6u8nov1ZdgF4m1ad3qyjiFd9DNRZHgLRFpw7%2BQIO%2FRB1l%2FIExP2ftUlkCMBT9oNlClJg4l9uGW5%2FqAiJ5n9ivK0ElRMwpvx96damGxt125XtMkmYf6a0OWSqnBw%3D%3D HTTP/1.1
Host: appconfigdata.us-west-1.amazonaws.com
Accept-Encoding: identity
User-Agent: aws-cli/2.4.15 Python/3.8.8 Windows/10 exe/AMD64 prompt/off command/appconfigdata.get-latest-configuration
X-Amz-Date: 20220218T190734Z
Authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20220218/us-west-1/appconfig/aws4_request, SignedHeaders=host;x-amz-date, Signature=39c3b3042cd2aEXAMPLE

Sample Response


{
	"betaGroup": {
		"enabled": true
	}
}