Amazon Forecast is no longer available to new customers. Existing customers of Amazon Forecast can continue to use the service as normal. [Learn more"](https://aws.amazon.com/blogs/machine-learning/transition-your-amazon-forecast-usage-to-amazon-sagemaker-canvas/)

# DescribeMonitor
<a name="API_DescribeMonitor"></a>

Describes a monitor resource. In addition to listing the properties provided in the [CreateMonitor](API_CreateMonitor.md) request, this operation lists the following properties:
+  `Baseline` 
+  `CreationTime` 
+  `LastEvaluationTime` 
+  `LastEvaluationState` 
+  `LastModificationTime` 
+  `Message` 
+  `Status` 

**Important**  
Amazon Forecast is no longer available to new customers. Existing customers of Amazon Forecast can continue to use the service as normal. [Learn more"](http://aws.amazon.com/blogs/machine-learning/transition-your-amazon-forecast-usage-to-amazon-sagemaker-canvas/) 

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

```
{
   "MonitorArn": "string"
}
```

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

The request accepts the following data in JSON format.

 ** [MonitorArn](#API_DescribeMonitor_RequestSyntax) **   <a name="forecast-DescribeMonitor-request-MonitorArn"></a>
The Amazon Resource Name (ARN) of the monitor resource to describe.  
Type: String  
Length Constraints: Maximum length of 256.  
Pattern: `arn:([a-z\d-]+):forecast:.*:.*:.+`   
Required: Yes

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

```
{
   "Baseline": { 
      "PredictorBaseline": { 
         "BaselineMetrics": [ 
            { 
               "Name": "string",
               "Value": number
            }
         ]
      }
   },
   "CreationTime": number,
   "EstimatedEvaluationTimeRemainingInMinutes": number,
   "LastEvaluationState": "string",
   "LastEvaluationTime": number,
   "LastModificationTime": number,
   "Message": "string",
   "MonitorArn": "string",
   "MonitorName": "string",
   "ResourceArn": "string",
   "Status": "string"
}
```

## Response Elements
<a name="API_DescribeMonitor_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.

 ** [Baseline](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-Baseline"></a>
Metrics you can use as a baseline for comparison purposes. Use these values you interpret monitoring results for an auto predictor.  
Type: [Baseline](API_Baseline.md) object

 ** [CreationTime](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-CreationTime"></a>
The timestamp for when the monitor resource was created.  
Type: Timestamp

 ** [EstimatedEvaluationTimeRemainingInMinutes](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-EstimatedEvaluationTimeRemainingInMinutes"></a>
The estimated number of minutes remaining before the monitor resource finishes its current evaluation.  
Type: Long

 ** [LastEvaluationState](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-LastEvaluationState"></a>
The state of the monitor's latest evaluation.  
Type: String  
Length Constraints: Maximum length of 256.

 ** [LastEvaluationTime](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-LastEvaluationTime"></a>
The timestamp of the latest evaluation completed by the monitor.  
Type: Timestamp

 ** [LastModificationTime](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-LastModificationTime"></a>
The timestamp of the latest modification to the monitor.  
Type: Timestamp

 ** [Message](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-Message"></a>
An error message, if any, for the monitor.  
Type: String

 ** [MonitorArn](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-MonitorArn"></a>
The Amazon Resource Name (ARN) of the monitor resource described.  
Type: String  
Length Constraints: Maximum length of 256.  
Pattern: `arn:([a-z\d-]+):forecast:.*:.*:.+` 

 ** [MonitorName](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-MonitorName"></a>
The name of the monitor.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 63.  
Pattern: `^[a-zA-Z][a-zA-Z0-9_]*` 

 ** [ResourceArn](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-ResourceArn"></a>
The Amazon Resource Name (ARN) of the auto predictor being monitored.  
Type: String  
Length Constraints: Maximum length of 256.  
Pattern: `arn:([a-z\d-]+):forecast:.*:.*:.+` 

 ** [Status](#API_DescribeMonitor_ResponseSyntax) **   <a name="forecast-DescribeMonitor-response-Status"></a>
The status of the monitor resource.  
Type: String  
Length Constraints: Maximum length of 256.

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

 ** InvalidInputException **   
We can't process the request because it includes an invalid value or a value that exceeds the valid range.  
HTTP Status Code: 400

 ** ResourceNotFoundException **   
We can't find a resource with that Amazon Resource Name (ARN). Check the ARN and try again.  
HTTP Status Code: 400

## See Also
<a name="API_DescribeMonitor_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/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/forecast-2018-06-26/DescribeMonitor) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/forecast-2018-06-26/DescribeMonitor)