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perf: cache Terraform provider plugins in terraform-check #93

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Merged
bryce-lynn-nttd merged 1 commit into from
Aug 3, 2026
Merged

perf: cache Terraform provider plugins in terraform-check #93

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44 changes: 44 additions & 0 deletions .github/workflows/reusable-terraform-check.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,28 @@ jobs:
path: ~/.asdf
key: ${{ runner.os }}-tool-versions-${{ hashFiles('.tool-versions') }}

- id: tf-plugin-cache-dir
name: Configure Terraform plugin cache directory
# Terraform silently ignores the plugin cache if the directory does not
# already exist, so create it before any init runs.
shell: bash
run: |
echo "TF_PLUGIN_CACHE_DIR=$HOME/.terraform.d/plugin-cache" >> "$GITHUB_ENV"
mkdir -p "$HOME/.terraform.d/plugin-cache"

- id: tf-plugin-cache
uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306
# Provider downloads dominate the cost of `terraform init`, and the
# Makefile inits the root module and every example separately, so each
# one currently re-downloads the same providers. A single shared cache
# serves all of them within a run and persists across runs.
name: Cache Terraform provider plugins
with:
path: ~/.terraform.d/plugin-cache
key: ${{ runner.os }}-tf-plugins-${{ hashFiles('**/versions.tf') }}
restore-keys: |
${{ runner.os }}-tf-plugins-

- id: configure
name: Setup Repository for Checks
# Ensure the 'repo' tool is installed, set up git to make the Makefile happy, and then configure to clone LCAF.
Expand Down Expand Up @@ -230,6 +252,28 @@ jobs:
path: ~/.asdf
key: ${{ runner.os }}-tool-versions-${{ hashFiles('.tool-versions') }}

- id: tf-plugin-cache-dir
name: Configure Terraform plugin cache directory
# Terraform silently ignores the plugin cache if the directory does not
# already exist, so create it before any init runs.
shell: bash
run: |
echo "TF_PLUGIN_CACHE_DIR=$HOME/.terraform.d/plugin-cache" >> "$GITHUB_ENV"
mkdir -p "$HOME/.terraform.d/plugin-cache"

- id: tf-plugin-cache
uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306
# Provider downloads dominate the cost of `terraform init`, and the
# Makefile inits the root module and every example separately, so each
# one currently re-downloads the same providers. A single shared cache
# serves all of them within a run and persists across runs.
name: Cache Terraform provider plugins
with:
path: ~/.terraform.d/plugin-cache
key: ${{ runner.os }}-tf-plugins-${{ hashFiles('**/versions.tf') }}
restore-keys: |
${{ runner.os }}-tf-plugins-

- id: configure
name: Setup Repository for Checks
# Ensure the 'repo' tool is installed, set up git to make the Makefile happy, and then configure to clone LCAF.
Expand Down