Allow aws_route_table_association import

[julienduchesne]

Fixes #561

Changes proposed in this pull request:

• Modify the ID of the route table association resource to contain both the route table ID and the subnet id
• This allows the importation of route table associations using this concatenated ID.
• Export the association ID in a new attribute association_id

Output from acceptance testing:

TESTARGS='-run=TestAccAWSRouteTableAssociation_basic'  make testacc
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./... -v -run=TestAccAWSRouteTableAssociation_basic -timeout 120m
?       github.com/terraform-providers/terraform-provider-aws   [no test files]
=== RUN   TestAccAWSRouteTableAssociation_basic
--- PASS: TestAccAWSRouteTableAssociation_basic (96.03s)
PASS
ok      github.com/terraform-providers/terraform-provider-aws/aws       96.046s

[devonhk]

Are there any plans to get this merged? Without this functionality I don't see any way of fully importing an existing VPC (except maybe editing my state file directly?).

[nijave]

Is there a reason this isn't being merged?

[sebmargineanu-ob]

Would be nice to get this merged as I am currently facing the issue with importing RTAs

[nijave]

Would be nice to get this merged as I am currently facing the issue with importing RTAs

As a work around, you can use something like terraforming (written in Ruby) to export AWS config as security groups then import these into TF state. Next, export TF state and parse for the actual values (state is json) and update your HCL/config. You could also dump with boto3 or any other SDK and generate the config then reconcile. The key is reconciling with tfstate after import.

[julienduchesne]

Seems like this was closed in another PR

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!