Add resource identity and list support to azurerm_public_ip

[mstroob]

Community Note

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Description

This PR adds support for the new Terraform 1.14+ list block functionality and resource identity feature to the azurerm_public_ip resource.

Changes include:

1. Resource Identity Support: Adds identity schema to the azurerm_public_ip resource, allowing users to reference resources using structured identity fields (subscription_id, resource_group_name, name) instead of just the resource ID string
2. List Functionality: Implements list support for querying Public IP resources at the subscription and resource group level using Terraform's new list block syntax
3. Refactoring: Extracts the flatten logic into a separate resourcePublicIpFlatten function to enable code reuse between read and list operations
4. Test Coverage: Adds comprehensive tests for both resource identity and list functionality

This enhancement improves the developer experience by:

• Enabling more intuitive resource references using identity fields
• Supporting bulk queries of Public IP resources for data analysis and automation scenarios
• Aligning with Terraform 1.14+ best practices for resource management

PR Checklist

• I have followed the guidelines in our Contributing Documentation.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have checked if my changes close any open issues. If so please include appropriate closing keywords below.
• I have updated/added Documentation as required written in a helpful and kind way to assist users that may be unfamiliar with the resource / data source.
• I have used a meaningful PR title to help maintainers and other users understand this change and help prevent duplicate work.

Changes to existing Resource / Data Source

• I have added an explanation of what my changes do and why I'd like you to include them (This may be covered by linking to an issue above, but may benefit from additional explanation).
• I have written new tests for my resource or datasource changes & updated any relevant documentation.
• I have successfully run tests with my changes locally. If not, please provide details on testing challenges that prevented you running the tests.
• (For changes that include a state migration only). I have manually tested the migration path between relevant versions of the provider.

Testing

• My submission includes Test coverage as described in the Contribution Guide and the tests pass.

Test Coverage:

• Added TestAccPublicIp_resourceIdentity to verify identity field population and import functionality
• Added TestAccPublicIp_listBySubscriptionAndRG to verify list functionality at both subscription and resource group scopes
• All tests verify proper identity field matching and query result expectations
• Tests require Terraform 1.14+ (enforced via tfversion.SkipBelow)

Change Log

Below please provide what should go into the changelog (if anything) conforming to the Changelog Format documented here.

* `azurerm_public_ip` - support for resource identity fields (`subscription_id`, `name`, `resource_group_name`) [GH-XXXXX]
* `azurerm_public_ip` - support for the `list` block to query Public IP resources by subscription or resource group [GH-XXXXX]

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Related Issue(s)

N/A - This is an enhancement to support new Terraform 1.14+ functionality

AI Assistance Disclosure

• AI Assisted - This contribution was made by, or with the assistance of, AI/LLMs

Rollback Plan

If a change needs to be reverted, we will publish an updated version of the provider.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

No changes to security controls. This PR only adds new query capabilities and identity field support; it does not modify any security-related functionality such as access controls, encryption, or logging.

Note

If this PR changes meaningfully during the course of review please update the title and description as required.

[mstroob]

Team City Test Results:

PR Number: 31762
.Build Number: 614604

All Tests

Status	Test Name	Duration
✅ PASS	TestAccPublicIp_listBySubscriptionAndRG	117.67s
✅ PASS	TestAccPublicIpPrefix_disappears	251.62s
✅ PASS	TestAccPublicIpStatic_standard_withIPv6	270.45s
✅ PASS	TestAccPublicIpPrefix_requiresImport	275.73s
✅ PASS	TestAccPublicIpStatic_requiresImport	277.16s
✅ PASS	TestAccPublicIpStatic_basic_withDNSLabel	298.60s
✅ PASS	TestAccPublicIpPrefix_resourceIdentity	310.82s
✅ PASS	TestAccPublicIpPrefix_regionalTier	322.17s
✅ PASS	TestAccPublicIpPrefix_update	333.36s
✅ PASS	TestAccPublicIp_resourceIdentity	333.94s
✅ PASS	TestAccPublicIpPrefix_prefixLength31	340.26s
✅ PASS	TestAccPublicIpPrefix_ipv6	340.76s
✅ PASS	TestAccPublicIp_zonesSingle	342.45s
✅ PASS	TestAccPublicIpPrefix_basic	342.43s
✅ PASS	TestAccPublicIpPrefix_globalTier	343.76s
✅ PASS	TestAccPublicIp_zonesMultiple	344.83s
✅ PASS	TestAccPublicIpPrefix_zonesSingle	345.07s
✅ PASS	TestAccPublicIpPrefix_zonesMultiple	345.33s
✅ PASS	TestAccPublicIpStatic_basic	354.31s
✅ PASS	TestAccPublicIpPrefix_prefixLength24	355.61s
✅ PASS	TestAccPublicIpDynamic_basic_withIPv6	248.56s
✅ PASS	TestAccPublicIpStatic_disappears	150.56s
✅ PASS	TestAccPublicIpStatic_basic_defaultsToIPv4	244.89s
✅ PASS	TestAccPublicIpStatic_basic_withIPv4	234.30s
✅ PASS	TestAccPublicIpStatic_standard	235.05s
✅ PASS	TestAccPublicIpStatic_standardPrefix	183.23s
✅ PASS	TestAccPublicIpStatic_withTags	205.14s
✅ PASS	TestAccPublicIpDynamic_basic	227.97s
✅ PASS	TestAccPublicIpStatic_ipTags	230.22s
✅ PASS	TestAccPublicIpStatic_globalTier	230.11s
✅ PASS	TestAccPublicIpStatic_regionalTier	231.74s
✅ PASS	TestAccPublicIpStatic_edgeZone	232.02s
✅ PASS	TestAccPublicIpStatic_canLabelBe63	240.18s
✅ PASS	TestAccPublicIpStatic_update	255.23s
✅ PASS	TestAccPublicIpStatic_idleTimeout	284.83s
✅ PASS	TestAccPublicIpStatic_standardPrefixWithTags	256.68s
✅ PASS	TestAccPublicIpStatic_standard_withDDoS	332.30s

Total Passed: 37
Total Failed: 0
Total Tests: 37

[sreallymatt]

Thanks @mstroob - LGTM 🧇