# GetEC2RecommendationProjectedMetrics
<a name="API_GetEC2RecommendationProjectedMetrics"></a>

Returns the projected utilization metrics of Amazon EC2 instance recommendations.

**Note**  
The `Cpu` and `Memory` metrics are the only projected utilization metrics returned when you run this action. Additionally, the `Memory` metric is returned only for resources that have the unified CloudWatch agent installed on them. For more information, see [Enabling Memory Utilization with the CloudWatch Agent](https://docs.aws.amazon.com/compute-optimizer/latest/ug/metrics.html#cw-agent).

## Request Syntax
<a name="API_GetEC2RecommendationProjectedMetrics_RequestSyntax"></a>

```
{
   "endTime": number,
   "instanceArn": "string",
   "period": number,
   "recommendationPreferences": { 
      "cpuVendorArchitectures": [ "string" ]
   },
   "startTime": number,
   "stat": "string"
}
```

## Request Parameters
<a name="API_GetEC2RecommendationProjectedMetrics_RequestParameters"></a>

For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

The request accepts the following data in JSON format.

 ** [endTime](#API_GetEC2RecommendationProjectedMetrics_RequestSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-request-endTime"></a>
The timestamp of the last projected metrics data point to return.  
Type: Timestamp  
Required: Yes

 ** [instanceArn](#API_GetEC2RecommendationProjectedMetrics_RequestSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-request-instanceArn"></a>
The Amazon Resource Name (ARN) of the instances for which to return recommendation projected metrics.  
Type: String  
Required: Yes

 ** [period](#API_GetEC2RecommendationProjectedMetrics_RequestSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-request-period"></a>
The granularity, in seconds, of the projected metrics data points.  
Type: Integer  
Required: Yes

 ** [recommendationPreferences](#API_GetEC2RecommendationProjectedMetrics_RequestSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-request-recommendationPreferences"></a>
An object to specify the preferences for the Amazon EC2 recommendation projected metrics to return in the response.  
Type: [RecommendationPreferences](API_RecommendationPreferences.md) object  
Required: No

 ** [startTime](#API_GetEC2RecommendationProjectedMetrics_RequestSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-request-startTime"></a>
The timestamp of the first projected metrics data point to return.  
Type: Timestamp  
Required: Yes

 ** [stat](#API_GetEC2RecommendationProjectedMetrics_RequestSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-request-stat"></a>
The statistic of the projected metrics.  
Type: String  
Valid Values: `Maximum | Average`   
Required: Yes

## Response Syntax
<a name="API_GetEC2RecommendationProjectedMetrics_ResponseSyntax"></a>

```
{
   "recommendedOptionProjectedMetrics": [ 
      { 
         "projectedMetrics": [ 
            { 
               "name": "string",
               "timestamps": [ number ],
               "values": [ number ]
            }
         ],
         "rank": number,
         "recommendedInstanceType": "string"
      }
   ]
}
```

## Response Elements
<a name="API_GetEC2RecommendationProjectedMetrics_ResponseElements"></a>

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

The following data is returned in JSON format by the service.

 ** [recommendedOptionProjectedMetrics](#API_GetEC2RecommendationProjectedMetrics_ResponseSyntax) **   <a name="computeoptimizer-GetEC2RecommendationProjectedMetrics-response-recommendedOptionProjectedMetrics"></a>
An array of objects that describes projected metrics.  
Type: Array of [RecommendedOptionProjectedMetric](API_RecommendedOptionProjectedMetric.md) objects

## Errors
<a name="API_GetEC2RecommendationProjectedMetrics_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
You do not have sufficient access to perform this action.  
HTTP Status Code: 400

 ** InternalServerException **   
An internal error has occurred. Try your call again.  
HTTP Status Code: 500

 ** InvalidParameterValueException **   
The value supplied for the input parameter is out of range or not valid.  
HTTP Status Code: 400

 ** MissingAuthenticationToken **   
The request must contain either a valid (registered) AWS access key ID or X.509 certificate.  
HTTP Status Code: 400

 ** OptInRequiredException **   
The account is not opted in to AWS Compute Optimizer.  
HTTP Status Code: 400

 ** ResourceNotFoundException **   
A resource that is required for the action doesn't exist.  
HTTP Status Code: 400

 ** ServiceUnavailableException **   
The request has failed due to a temporary failure of the server.  
HTTP Status Code: 500

 ** ThrottlingException **   
The request was denied due to request throttling.  
HTTP Status Code: 400

## See Also
<a name="API_GetEC2RecommendationProjectedMetrics_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/compute-optimizer-2019-11-01/GetEC2RecommendationProjectedMetrics)