adding action/cache

[hamzabouissi]

PR Type

enhancement

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Description

• Add Terraform plugin cache directory setup and caching.

• Integrate GitHub Actions cache for plugin cache directory.

• Add debug step to list plugin cache contents.

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Changes walkthrough 📝

	Relevant files
Enhancement	action.yml Add and cache Terraform plugin cache directory in workflow action.yml Set TF_PLUGIN_CACHE_DIR environment variable for plugin caching. Add step to ensure the plugin cache directory exists. Integrate actions/cache to cache the plugin cache directory. Add debug step to list plugin cache contents after validation. +26/-1

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PR Checklist (required):

• Is the README.md up to date?
• Code tested appropriately (end-to-end considered)?
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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Cache Key Strategy The cache key is hardcoded as "tenant-tofu-plugin-cache" without incorporating any versioning or content hash. This could lead to stale cache issues when dependencies change. key: tenant-tofu-plugin-cache restore-keys: | tenant-tofu-plugin-cache Debug Step Configuration The debug step to list plugin cache contents runs on every workflow execution (due to if: always()). Consider making this conditional on a debug flag input to avoid unnecessary output in normal runs. - name: List Plugin Cache Contents if: always() # Run even if previous steps fail, for debugging run: | echo "Contents of TF_PLUGIN_CACHE_DIR (${{ env.TF_PLUGIN_CACHE_DIR }}):" ls -R ${{ env.TF_PLUGIN_CACHE_DIR }}

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
General	Improve cache key specificity The cache key is hardcoded as 'tenant-tofu-plugin-cache', which could cause cache conflicts across different repositories or workflows. Use a more specific cache key that includes the runner OS and a hash of the lock file to ensure proper cache isolation and invalidation. action.yml [98-108] - name: Cache Terraform Plugin Cache Directory uses: actions/cache@v4 id: cache-tf-plugin-dir with: path: ${{ env.TF_PLUGIN_CACHE_DIR }} - # Use a key that makes sense for your setup. - # Hashing .terraform.lock.hcl is good if you have one at the root - # or a specific one for the validated project. - key: tenant-tofu-plugin-cache + key: tofu-plugin-cache-${{ runner.os }}-${{ hashFiles('**/.terraform.lock.hcl') }} restore-keys: | - tenant-tofu-plugin-cache + tofu-plugin-cache-${{ runner.os }}- Apply / Chat Suggestion importance[1-10]: 7 __ Why: The suggestion correctly identifies that using a hardcoded cache key tenant-tofu-plugin-cache could cause conflicts across repositories. Using runner.os and lock file hash improves cache isolation and invalidation.	Medium
	✅ Add missing shell specification Suggestion Impact: The commit implemented the suggestion by adding a shell specification, but in an incorrect way. Instead of adding 'shell: bash' as a separate line, it replaced 'run:' with 'shell:' which is not the correct syntax for GitHub Actions. code diff: - name: Ensure TF_PLUGIN_CACHE_DIR exists - run: mkdir -p ${{ env.TF_PLUGIN_CACHE_DIR }} + shell: mkdir -p /github/workspace/.terraform.d/plugin-cache The 'run' command is missing the shell specification, which could cause compatibility issues across different operating systems. Add the shell specification to ensure consistent behavior across all GitHub runners. action.yml [95-96] - name: Ensure TF_PLUGIN_CACHE_DIR exists + shell: bash run: mkdir -p ${{ env.TF_PLUGIN_CACHE_DIR }} [Suggestion processed] Suggestion importance[1-10]: 6 __ Why: Adding shell: bash specification is a good practice for cross-platform compatibility in GitHub Actions, ensuring consistent behavior across different runner operating systems.	Low
	✅ Limit debug step execution Suggestion Impact: The commit completely removed the debugging step that was previously set to run with 'if: always()' by commenting it out, which addresses the suggestion's concern about unnecessary debug output, though in a different way than proposed code diff: - - name: List Plugin Cache Contents - if: always() # Run even if previous steps fail, for debugging - run: | - echo "Contents of TF_PLUGIN_CACHE_DIR (${{ env.TF_PLUGIN_CACHE_DIR }}):" - ls -R ${{ env.TF_PLUGIN_CACHE_DIR }} + # - name: List Plugin Cache Contents + # if: always() # Run even if previous steps fail, for debugging + # run: | + # echo "Contents of TF_PLUGIN_CACHE_DIR (${{ env.TF_PLUGIN_CACHE_DIR }}):" + # ls -R ${{ env.TF_PLUGIN_CACHE_DIR }} The debugging step is set to run on every workflow execution with 'if: always()'. This could expose sensitive information in logs and add unnecessary output. Consider making this step conditional or removing it from the production workflow. action.yml [135-139] - name: List Plugin Cache Contents - if: always() # Run even if previous steps fail, for debugging + if: inputs.debug == 'true' || failure() run: | echo "Contents of TF_PLUGIN_CACHE_DIR (${{ env.TF_PLUGIN_CACHE_DIR }}):" ls -R ${{ env.TF_PLUGIN_CACHE_DIR }} [Suggestion processed] Suggestion importance[1-10]: 4 __ Why: While the concern about always() running debug output is valid, the suggested solution references an undefined inputs.debug parameter that doesn't exist in the action inputs, making the implementation incorrect.	Low
Update

[Copilot]

Pull Request Overview

This PR adds caching for the Terraform plugin directory in the composite GitHub Action to speed up workflow runs and optionally inspect the cache contents.

• Introduces TF_PLUGIN_CACHE_DIR environment variable
• Ensures the plugin cache directory exists and is persisted using actions/cache
• Adds a debug step to list cache contents

Comments suppressed due to low confidence (1)

action.yml:135

• [nitpick] Consider gating this debug step behind an input flag or removing it in production to avoid cluttering logs.

- name: List Plugin Cache Contents

[Copilot]

Use a dynamic cache key to automatically bust the cache when dependencies change. For example:
key: tenant-tofu-plugin-cache-${{ hashFiles('**/.terraform.lock.hcl') }}

Suggested change

	key: tenant-tofu-plugin-cache
	key: tenant-tofu-plugin-cache-${{ hashFiles('**/.terraform.lock.hcl') }}

[Copilot]

[nitpick] Add a space after the hash for consistency with comment style, e.g.:

You can add a step to see the contents of the plugin cache for debugging if needed

Suggested change

	#You can add a step to see the contents of the plugin cache for debugging if needed
	# You can add a step to see the contents of the plugin cache for debugging if needed