# GetNamespace
<a name="API_GetNamespace"></a>

Gets information about a namespace.

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

```
{
   "Id": "string"
}
```

## Request Parameters
<a name="API_GetNamespace_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.

 ** [Id](#API_GetNamespace_RequestSyntax) **   <a name="cloudmap-GetNamespace-request-Id"></a>
The ID or Amazon Resource Name (ARN) of the namespace that you want to get information about. For namespaces shared with your Amazon account, specify the namespace ARN. For more information about shared namespaces, see [Cross-account Amazon Cloud Map namespace sharing](https://docs.amazonaws.cn/cloud-map/latest/dg/sharing-namespaces.html) in the * Amazon Cloud Map Developer Guide*   
Type: String  
Length Constraints: Maximum length of 255.  
Required: Yes

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

```
{
   "Namespace": { 
      "Arn": "string",
      "CreateDate": number,
      "CreatorRequestId": "string",
      "Description": "string",
      "Id": "string",
      "Name": "string",
      "Properties": { 
         "DnsProperties": { 
            "HostedZoneId": "string",
            "SOA": { 
               "TTL": number
            }
         },
         "HttpProperties": { 
            "HttpName": "string"
         }
      },
      "ResourceOwner": "string",
      "ServiceCount": number,
      "Type": "string"
   }
}
```

## Response Elements
<a name="API_GetNamespace_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.

 ** [Namespace](#API_GetNamespace_ResponseSyntax) **   <a name="cloudmap-GetNamespace-response-Namespace"></a>
A complex type that contains information about the specified namespace.  
Type: [Namespace](API_Namespace.md) object

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

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

 ** InvalidInput **   
One or more specified values aren't valid. For example, a required value might be missing, a numeric value might be outside the allowed range, or a string value might exceed length constraints.  
HTTP Status Code: 400

 ** NamespaceNotFound **   
No namespace exists with the specified ID.  
HTTP Status Code: 400

## Examples
<a name="API_GetNamespace_Examples"></a>

### GetNamespace Example
<a name="API_GetNamespace_Example_1"></a>

This example request retrieves information about the specified namespace.

#### Sample Request
<a name="API_GetNamespace_Example_1_Request"></a>

```
POST / HTTP/1.1
host:servicediscovery.us-west-2.amazonaws.com
x-amz-date:20181118T211711Z
authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20181118/us-west-2/servicediscovery/aws4_request,
               SignedHeaders=content-length;content-type;host;user-agent;x-amz-date;x-amz-target,
               Signature=[calculated-signature]
x-amz-target:Route53AutoNaming_v20170314.GetNamespace
content-type:application/x-amz-json-1.1
content-length:[number of characters in the JSON string]

{
    "Id": "ns-e4anhexample0004"
}
```

#### Sample Response
<a name="API_GetNamespace_Example_1_Response"></a>

```
HTTP/1.1 200
Content-Length: [number of characters in the JSON string]
Content-Type: application/x-amz-json-1.1

{
    "Namespace": {
        "Arn": "arn:aws:servicediscovery:us-west-2:123456789012:namespace/ns-e1tpmexample0001",
        "CreateDate": "20181118T211712Z",
        "CreatorRequestId": "example-creator-request-id-0001",
        "Description": "Example.com Amazon Cloud Map HTTP Namespace",
        "Id": "ns-e1tpmexample0001",
        "Name": "example-http.com",
        "Properties": {
            "DnsProperties": {},
            "HttpProperties": {
                "HttpName": "example-http.com"
            }
        },
        "Type": "HTTP",
        "ResourceOwner": "123456789012"
    }
}
```

### GetNamespace Example using ARN
<a name="API_GetNamespace_Example_2"></a>

This example request retrieves information about a shared namespace using its ARN. The namespace owner is account `123456789012` and the consumer is `111122223333`.

#### Sample Request
<a name="API_GetNamespace_Example_2_Request"></a>

```
POST / HTTP/1.1
host:servicediscovery.us-west-2.amazonaws.com
x-amz-date:20181118T211711Z
authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20181118/us-west-2/servicediscovery/aws4_request,
               SignedHeaders=content-length;content-type;host;user-agent;x-amz-date;x-amz-target,
               Signature=[calculated-signature]
x-amz-target:Route53AutoNaming_v20170314.GetNamespace
content-type:application/x-amz-json-1.1
content-length:[number of characters in the JSON string]

{
    "Id": "arn:aws:servicediscovery:us-west-2:123456789012:namespace/ns-e4anhexample0004"
}
```

#### Sample Response
<a name="API_GetNamespace_Example_2_Response"></a>

```
HTTP/1.1 200
Content-Length: [number of characters in the JSON string]
Content-Type: application/x-amz-json-1.1

{
    "Namespace": {
        "Arn": "arn:aws:servicediscovery:us-west-2:123456789012:namespace/ns-e1tpmexample0001",
        "CreateDate": "20181118T211712Z",
        "CreatorRequestId": "example-creator-request-id-0001",
        "Description": "Example.com Amazon Cloud Map HTTP Namespace",
        "Id": "ns-e1tpmexample0001",
        "Name": "example-http.com",
        "Properties": {
            "DnsProperties": {},
            "HttpProperties": {
                "HttpName": "example-http.com"
            }
        },
        "Type": "HTTP",
        "ResourceOwner": "123456789012"
    }
}
```

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

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/servicediscovery-2017-03-14/GetNamespace) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/servicediscovery-2017-03-14/GetNamespace)