java.lang.Object
- com.pulumi.resources.Resource
- - com.pulumi.resources.CustomResource
  - - com.pulumi.aws.ec2transitgateway.RouteTableAssociation

public class RouteTableAssociation
extends com.pulumi.resources.CustomResource

Manages an EC2 Transit Gateway Route Table association. ## Example Usage

 
 package generated_program;
 
 import com.pulumi.Context;
 import com.pulumi.Pulumi;
 import com.pulumi.core.Output;
 import com.pulumi.aws.ec2transitgateway.RouteTableAssociation;
 import com.pulumi.aws.ec2transitgateway.RouteTableAssociationArgs;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Map;
 import java.io.File;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 
 public class App {
     public static void main(String[] args) {
         Pulumi.run(App::stack);
     }
 
     public static void stack(Context ctx) {
         var example = new RouteTableAssociation("example", RouteTableAssociationArgs.builder()
             .transitGatewayAttachmentId(exampleAwsEc2TransitGatewayVpcAttachment.id())
             .transitGatewayRouteTableId(exampleAwsEc2TransitGatewayRouteTable.id())
             .build());
 
     }
 }

### Direct Connect Gateway Association When associating a Direct Connect Gateway attachment, reference the `transitGatewayAttachmentId` attribute directly from the `aws.directconnect.GatewayAssociation` resource (available in v6.5.0+):

 
 package generated_program;
 
 import com.pulumi.Context;
 import com.pulumi.Pulumi;
 import com.pulumi.core.Output;
 import com.pulumi.aws.directconnect.Gateway;
 import com.pulumi.aws.directconnect.GatewayArgs;
 import com.pulumi.aws.ec2transitgateway.TransitGateway;
 import com.pulumi.aws.ec2transitgateway.TransitGatewayArgs;
 import com.pulumi.aws.directconnect.GatewayAssociation;
 import com.pulumi.aws.directconnect.GatewayAssociationArgs;
 import com.pulumi.aws.ec2transitgateway.RouteTable;
 import com.pulumi.aws.ec2transitgateway.RouteTableArgs;
 import com.pulumi.aws.ec2transitgateway.RouteTableAssociation;
 import com.pulumi.aws.ec2transitgateway.RouteTableAssociationArgs;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Map;
 import java.io.File;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 
 public class App {
     public static void main(String[] args) {
         Pulumi.run(App::stack);
     }
 
     public static void stack(Context ctx) {
         var example = new Gateway("example", GatewayArgs.builder()
             .name("example")
             .amazonSideAsn("64512")
             .build());
 
         var exampleTransitGateway = new TransitGateway("exampleTransitGateway", TransitGatewayArgs.builder()
             .description("example")
             .build());
 
         var exampleGatewayAssociation = new GatewayAssociation("exampleGatewayAssociation", GatewayAssociationArgs.builder()
             .dxGatewayId(example.id())
             .associatedGatewayId(exampleTransitGateway.id())
             .allowedPrefixes("10.0.0.0/16")
             .build());
 
         var exampleRouteTable = new RouteTable("exampleRouteTable", RouteTableArgs.builder()
             .transitGatewayId(exampleTransitGateway.id())
             .build());
 
         // Correct: Reference the attachment ID directly from the association resource
         var exampleRouteTableAssociation = new RouteTableAssociation("exampleRouteTableAssociation", RouteTableAssociationArgs.builder()
             .transitGatewayAttachmentId(exampleGatewayAssociation.transitGatewayAttachmentId())
             .transitGatewayRouteTableId(exampleRouteTable.id())
             .build());
 
     }
 }

> **NOTE:** Avoid using the `aws.ec2transitgateway.getDirectConnectGatewayAttachment` data source to retrieve the attachment ID, as this can cause unnecessary resource recreation when unrelated attributes of the Direct Connect Gateway association change (such as `allowedPrefixes`). Always reference the `transitGatewayAttachmentId` attribute directly from the `aws.directconnect.GatewayAssociation` resource when available. ### VPC Attachment Association For VPC attachments, always reference the attachment resource's `id` attribute directly. Avoid using data sources or lifecycle rules that might cause the attachment ID to become unknown during planning:

 
 package generated_program;
 
 import com.pulumi.Context;
 import com.pulumi.Pulumi;
 import com.pulumi.core.Output;
 import com.pulumi.aws.ec2.Vpc;
 import com.pulumi.aws.ec2.VpcArgs;
 import com.pulumi.aws.ec2.Subnet;
 import com.pulumi.aws.ec2.SubnetArgs;
 import com.pulumi.aws.ec2transitgateway.TransitGateway;
 import com.pulumi.aws.ec2transitgateway.TransitGatewayArgs;
 import com.pulumi.aws.ec2transitgateway.VpcAttachment;
 import com.pulumi.aws.ec2transitgateway.VpcAttachmentArgs;
 import com.pulumi.aws.ec2transitgateway.RouteTable;
 import com.pulumi.aws.ec2transitgateway.RouteTableArgs;
 import com.pulumi.aws.ec2transitgateway.RouteTableAssociation;
 import com.pulumi.aws.ec2transitgateway.RouteTableAssociationArgs;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Map;
 import java.io.File;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 
 public class App {
     public static void main(String[] args) {
         Pulumi.run(App::stack);
     }
 
     public static void stack(Context ctx) {
         var example = new Vpc("example", VpcArgs.builder()
             .cidrBlock("10.0.0.0/16")
             .build());
 
         var exampleSubnet = new Subnet("exampleSubnet", SubnetArgs.builder()
             .vpcId(example.id())
             .cidrBlock("10.0.1.0/24")
             .build());
 
         var exampleTransitGateway = new TransitGateway("exampleTransitGateway", TransitGatewayArgs.builder()
             .description("example")
             .build());
 
         var exampleVpcAttachment = new VpcAttachment("exampleVpcAttachment", VpcAttachmentArgs.builder()
             .subnetIds(exampleSubnet.id())
             .transitGatewayId(exampleTransitGateway.id())
             .vpcId(example.id())
             .build());
 
         var exampleRouteTable = new RouteTable("exampleRouteTable", RouteTableArgs.builder()
             .transitGatewayId(exampleTransitGateway.id())
             .build());
 
         // Correct: Reference the VPC attachment ID directly
         var exampleRouteTableAssociation = new RouteTableAssociation("exampleRouteTableAssociation", RouteTableAssociationArgs.builder()
             .transitGatewayAttachmentId(exampleVpcAttachment.id())
             .transitGatewayRouteTableId(exampleRouteTable.id())
             .build());
 
     }
 }

> **NOTE:** When the `transitGatewayAttachmentId` changes (for example, when a VPC attachment is replaced), this resource will be recreated. This is the correct behavior to maintain consistency between the attachment and its route table association. ## Import Using `pulumi import`, import `aws.ec2transitgateway.RouteTableAssociation` using the EC2 Transit Gateway Route Table identifier, an underscore, and the EC2 Transit Gateway Attachment identifier. For example: ```sh $ pulumi import aws:ec2transitgateway/routeTableAssociation:RouteTableAssociation example tgw-rtb-12345678_tgw-attach-87654321 ```

Nested Class Summary
- Nested classes/interfaces inherited from class com.pulumi.resources.CustomResource
  com.pulumi.resources.CustomResource.CustomResourceInternal
- Nested classes/interfaces inherited from class com.pulumi.resources.Resource
  com.pulumi.resources.Resource.LazyField<T extends java.lang.Object>, com.pulumi.resources.Resource.LazyFields, com.pulumi.resources.Resource.ResourceInternal

Field Summary
- Fields inherited from class com.pulumi.resources.Resource
  childResources, remote

Constructor Summary

Constructors
Constructor	Description
`RouteTableAssociation(java.lang.String name)`
`RouteTableAssociation(java.lang.String name, RouteTableAssociationArgs args)`
`RouteTableAssociation(java.lang.String name, RouteTableAssociationArgs args, com.pulumi.resources.CustomResourceOptions options)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static RouteTableAssociation`	`get(java.lang.String name, com.pulumi.core.Output<java.lang.String> id, RouteTableAssociationState state, com.pulumi.resources.CustomResourceOptions options)`	Get an existing Host resource's state with the given name, ID, and optional extra properties used to qualify the lookup.
`com.pulumi.core.Output<java.lang.String>`	`region()`
`com.pulumi.core.Output<java.util.Optional<java.lang.Boolean>>`	`replaceExistingAssociation()`
`com.pulumi.core.Output<java.lang.String>`	`resourceId()`
`com.pulumi.core.Output<java.lang.String>`	`resourceType()`
`com.pulumi.core.Output<java.lang.String>`	`transitGatewayAttachmentId()`
`com.pulumi.core.Output<java.lang.String>`	`transitGatewayRouteTableId()`

Methods inherited from class com.pulumi.resources.CustomResource
getId, id, idFuture

Methods inherited from class com.pulumi.resources.Resource
getChildResources, getResourceName, getResourceType, getUrn, pulumiChildResources, pulumiResourceName, pulumiResourceType, urn

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RouteTableAssociation
```
public RouteTableAssociation(java.lang.String name)
```
    Parameters:
    
    name - The _unique_ name of the resulting resource.
  - RouteTableAssociation
```
public RouteTableAssociation(java.lang.String name,
                             RouteTableAssociationArgs args)
```
    Parameters:
    
    name - The _unique_ name of the resulting resource.
    
    args - The arguments to use to populate this resource's properties.
  - RouteTableAssociation
```
public RouteTableAssociation(java.lang.String name,
                             RouteTableAssociationArgs args,
                             @Nullable
                             com.pulumi.resources.CustomResourceOptions options)
```
    Parameters:
    
    name - The _unique_ name of the resulting resource.
    
    args - The arguments to use to populate this resource's properties.
    
    options - A bag of options that control this resource's behavior.
- Method Detail
  - region
```
public com.pulumi.core.Output<java.lang.String> region()
```
    Returns:
    
    Region where this resource will be [managed](https://docs.aws.amazon.com/general/latest/gr/rande.html#regional-endpoints). Defaults to the Region set in the provider configuration.
  - replaceExistingAssociation
```
public com.pulumi.core.Output<java.util.Optional<java.lang.Boolean>> replaceExistingAssociation()
```
    Returns:
    
    Boolean whether the Gateway Attachment should remove any current Route Table association before associating with the specified Route Table. Default value: `false`. This argument is intended for use with EC2 Transit Gateways shared into the current account, otherwise the `transitGatewayDefaultRouteTableAssociation` argument of the `aws.ec2transitgateway.VpcAttachment` resource should be used.
  - resourceId
```
public com.pulumi.core.Output<java.lang.String> resourceId()
```
    Returns:
    
    Identifier of the resource
  - resourceType
```
public com.pulumi.core.Output<java.lang.String> resourceType()
```
    Returns:
    
    Type of the resource
  - transitGatewayAttachmentId
```
public com.pulumi.core.Output<java.lang.String> transitGatewayAttachmentId()
```
    Returns:
    
    Identifier of EC2 Transit Gateway Attachment.
  - transitGatewayRouteTableId
```
public com.pulumi.core.Output<java.lang.String> transitGatewayRouteTableId()
```
    Returns:
    
    Identifier of EC2 Transit Gateway Route Table.
  - get
```
public static RouteTableAssociation get(java.lang.String name,
                                        com.pulumi.core.Output<java.lang.String> id,
                                        @Nullable
                                        RouteTableAssociationState state,
                                        @Nullable
                                        com.pulumi.resources.CustomResourceOptions options)
```
    Get an existing Host resource's state with the given name, ID, and optional extra properties used to qualify the lookup.
    
    Parameters:
    
    name - The _unique_ name of the resulting resource.
    
    id - The _unique_ provider ID of the resource to lookup.
    
    state -
    
    options - Optional settings to control the behavior of the CustomResource.

Class RouteTableAssociation

Nested Class Summary

Nested classes/interfaces inherited from class com.pulumi.resources.CustomResource

Nested classes/interfaces inherited from class com.pulumi.resources.Resource

Field Summary

Fields inherited from class com.pulumi.resources.Resource

Constructor Summary

Method Summary

Methods inherited from class com.pulumi.resources.CustomResource

Methods inherited from class com.pulumi.resources.Resource

Methods inherited from class java.lang.Object

Constructor Detail

RouteTableAssociation

RouteTableAssociation

RouteTableAssociation

Method Detail

region

replaceExistingAssociation

resourceId

resourceType

transitGatewayAttachmentId

transitGatewayRouteTableId

get