Add parameterized resource identity to aws_route

[jar-b]

Description

Adds parameterized resource identity to the aws_route resource.

Relations

Relates #42983
Relates #42988

Output from Acceptance Testing

% make testacc PKG=vpc TESTS=TestAccVPCRoute_
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.24.6 test ./internal/service/ec2/... -v -count 1 -parallel 20 -run='TestAccVPCRoute_'  -timeout 360m -vet=off
2025/08/27 15:39:29 Creating Terraform AWS Provider (SDKv2-style)...
2025/08/27 15:39:29 Initializing Terraform AWS Provider (SDKv2-style)...

=== NAME  TestAccVPCRoute_ipv4ToCarrierGateway
    wavelength_carrier_gateway_test.go:198: skipping since no Wavelength Zones are available
--- SKIP: TestAccVPCRoute_ipv4ToCarrierGateway (0.74s)
=== CONT  TestAccVPCRoute_basic
--- PASS: TestAccVPCRoute_localRouteImport (27.20s)
=== CONT  TestAccVPCRoute_Disappears_routeTable
--- PASS: TestAccVPCRoute_ipv4ToVPCPeeringConnection (30.07s)
=== CONT  TestAccVPCRoute_localRouteCreateError
--- PASS: TestAccVPCRoute_basic (31.51s)
=== CONT  TestAccVPCRoute_disappears
--- PASS: TestAccVPCRoute_IPv4ToNetworkInterface_unattached (34.15s)
=== CONT  TestAccVPCRoute_conditionalCIDRBlock
--- PASS: TestAccVPCRoute_ipv6ToVPCPeeringConnection (44.53s)
=== CONT  TestAccVPCRoute_ipv6ToVPCEndpoint
--- PASS: TestAccVPCRoute_Identity_Basic (46.27s)
=== CONT  TestAccVPCRoute_IPv6Update_target
--- PASS: TestAccVPCRoute_doesNotCrashWithVPCEndpoint (46.64s)
=== CONT  TestAccVPCRoute_IPv4Update_target
--- PASS: TestAccVPCRoute_IPv6ToNetworkInterface_unattached (46.65s)
=== CONT  TestAccVPCRoute_prefixListToInternetGateway
--- PASS: TestAccVPCRoute_Disappears_routeTable (22.88s)
=== CONT  TestAccVPCRoute_Identity_ExistingResource
--- PASS: TestAccVPCRoute_disappears (23.64s)
=== CONT  TestAccVPCRoute_Identity_RegionOverride
--- PASS: TestAccVPCRoute_localRouteCreateError (27.11s)
=== CONT  TestAccVPCRoute_localRouteImportAndUpdate
--- PASS: TestAccVPCRoute_ipv6ToEgressOnlyInternetGateway (57.95s)
=== CONT  TestAccVPCRoute_prefixListToTransitGateway
--- PASS: TestAccVPCRoute_prefixListToInternetGateway (33.31s)
=== CONT  TestAccVPCRoute_prefixListToEgressOnlyInternetGateway
--- PASS: TestAccVPCRoute_conditionalCIDRBlock (51.62s)
=== CONT  TestAccVPCRoute_prefixListToLocalGateway
    vpc_route_test.go:2166: skipping since no Outposts found
--- SKIP: TestAccVPCRoute_prefixListToLocalGateway (0.59s)
=== CONT  TestAccVPCRoute_duplicate
--- PASS: TestAccVPCRoute_Identity_RegionOverride (30.63s)
=== CONT  TestAccVPCRoute_prefixListToCarrierGateway
    wavelength_carrier_gateway_test.go:198: skipping since no Wavelength Zones are available
--- SKIP: TestAccVPCRoute_prefixListToCarrierGateway (0.25s)
=== CONT  TestAccVPCRoute_PrefixListToNetworkInterface_attached
--- PASS: TestAccVPCRoute_IPv4ToNetworkInterface_attached (92.36s)
=== CONT  TestAccVPCRoute_prefixListToNatGateway
--- PASS: TestAccVPCRoute_duplicate (12.42s)
=== CONT  TestAccVPCRoute_prefixListToVPCPeeringConnection
--- PASS: TestAccVPCRoute_ipv4ToInstance (101.55s)
=== CONT  TestAccVPCRoute_ipv6ToInstance
--- PASS: TestAccVPCRoute_Identity_ExistingResource (54.36s)
=== CONT  TestAccVPCRoute_ipv6ToInternetGateway
--- PASS: TestAccVPCRoute_ipv6ToVPNGateway (108.35s)
=== CONT  TestAccVPCRoute_ipv6ToLocalGateway
    vpc_route_test.go:1066: skipping since no Outposts found
--- SKIP: TestAccVPCRoute_ipv6ToLocalGateway (0.15s)
=== CONT  TestAccVPCRoute_PrefixListToNetworkInterface_unattached
--- PASS: TestAccVPCRoute_localRouteImportAndUpdate (52.04s)
=== CONT  TestAccVPCRoute_prefixListToInstance
--- PASS: TestAccVPCRoute_ipv4ToVPNGateway (109.48s)
=== CONT  TestAccVPCRoute_ipv4ToLocalGateway
    vpc_route_test.go:1019: skipping since no Outposts found
--- SKIP: TestAccVPCRoute_ipv4ToLocalGateway (0.17s)
--- PASS: TestAccVPCRoute_prefixListToVPNGateway (110.05s)
--- PASS: TestAccVPCRoute_IPv4ToNetworkInterface_twoAttachments (113.33s)
--- PASS: TestAccVPCRoute_prefixListToEgressOnlyInternetGateway (38.75s)
--- PASS: TestAccVPCRoute_prefixListToVPCPeeringConnection (29.25s)
--- PASS: TestAccVPCRoute_ipv6ToInternetGateway (32.21s)
--- PASS: TestAccVPCRoute_PrefixListToNetworkInterface_unattached (30.01s)
--- PASS: TestAccVPCRoute_ipv6ToInstance (89.50s)
--- PASS: TestAccVPCRoute_prefixListToInstance (89.78s)
--- PASS: TestAccVPCRoute_PrefixListToNetworkInterface_attached (112.51s)
--- PASS: TestAccVPCRoute_ipv4ToNatGateway (215.04s)
--- PASS: TestAccVPCRoute_ipv6ToNatGateway (226.33s)
--- PASS: TestAccVPCRoute_IPv6Update_target (218.73s)
--- PASS: TestAccVPCRoute_prefixListToNatGateway (178.78s)
--- PASS: TestAccVPCRoute_ipv6ToTransitGateway (382.52s)
--- PASS: TestAccVPCRoute_ipv4ToTransitGateway (382.83s)
--- PASS: TestAccVPCRoute_prefixListToTransitGateway (375.40s)
--- PASS: TestAccVPCRoute_ipv6ToVPCEndpoint (404.25s)
--- PASS: TestAccVPCRoute_ipv4ToVPCEndpoint (461.01s)
--- PASS: TestAccVPCRoute_IPv4Update_target (574.28s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/ec2        627.587s

[github-actions]

Community Guidelines

This comment is added to every new Pull Request to provide quick reference to how the Terraform AWS Provider is maintained. Please review the information below, and thank you for contributing to the community that keeps the provider thriving! 🚀

Voting for Prioritization

• Please vote on this Pull Request by adding a 👍 reaction to the original post to help the community and maintainers prioritize it.
• Please see our prioritization guide for additional information on how the maintainers handle prioritization.
• Please do not leave +1 or other comments that do not add relevant new information or questions; they generate extra noise for others following the Pull Request and do not help prioritize the request.

Pull Request Authors

• Review the contribution guide relating to the type of change you are making to ensure all of the necessary steps have been taken.
• Whether or not the branch has been rebased will not impact prioritization, but doing so is always a welcome surprise.

[jar-b]

This resource identity implementation is currently blocked. The mismatch between the resource identifier attribute and expected import attributes (route_table_id and one of destination_cidr_block, destination_ipv6_cidr_block or destination_prefix_list_id) prevents the existing import logic from being ported to a custom importer.

Additional support must be added from "at most one of" optional arguments within the import schema before proceeding.

[jar-b]

#44043 added support for "at most one of" optional arguments in generated identity tests.

[ewbankkit]

LGTM 🚀.

[github-actions]

Warning

This Issue has been closed, meaning that any additional comments are much easier for the maintainers to miss. Please assume that the maintainers will not see them.

Ongoing conversations amongst community members are welcome, however, the issue will be locked after 30 days. Moving conversations to another venue, such as the AWS Provider forum, is recommended. If you have additional concerns, please open a new issue, referencing this one where needed.

[github-actions]

This functionality has been released in v6.11.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.