Terraform Deploy - production #93
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| run-name: 'Terraform Deploy - ${{inputs.environment}}' | |
| name: 'Terraform Deploy' | |
| on: | |
| workflow_dispatch: | |
| inputs: | |
| environment: | |
| description: 'Azure deployment environment' | |
| required: true | |
| default: 'development' | |
| type: choice | |
| options: | |
| - development | |
| - staging | |
| - production | |
| defaults: | |
| run: | |
| working-directory: ./terraform | |
| # Permissions for OIDC authentication | |
| permissions: | |
| id-token: write | |
| contents: write | |
| issues: write | |
| env: | |
| ARM_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }} | |
| ARM_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }} | |
| ARM_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }} | |
| ARM_USE_OIDC: true | |
| ARM_SKIP_PROVIDER_REGISTRATION: true | |
| jobs: | |
| terraform-plan: | |
| name: 'Terraform Plan' | |
| runs-on: ubuntu-latest | |
| environment: ${{ inputs.environment }} | |
| outputs: | |
| tfplanExitCode: ${{ steps.tf-plan.outputs.exitcode }} | |
| steps: | |
| # Checkout the repository to the GitHub Actions runner | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| # Install the latest version of the Terraform CLI | |
| - name: Setup Terraform | |
| uses: hashicorp/setup-terraform@v3 | |
| with: | |
| terraform_version: 1.5.6 | |
| terraform_wrapper: false | |
| # Initialise a new or existing Terraform working directory by creating initial files, loading any remote state, downloading modules, etc. | |
| - name: Terraform Init | |
| run: > | |
| terraform init | |
| -backend-config="resource_group_name=${{ secrets.TERRAFORM_STATE_RESOURCE_GROUP }}" | |
| -backend-config="storage_account_name=${{ secrets.TERRAFORM_STATE_STORAGE_ACCOUNT_NAME }}" | |
| -backend-config="container_name=${{ secrets.TERRAFORM_STATE_STORAGE_CONTAINER_NAME }}" | |
| -backend-config="key=${{ secrets.TERRAFORM_STATE_KEY }}" | |
| # Checks that all Terraform configuration files adhere to a canonical format | |
| # Will fail the build if not | |
| - name: Terraform Format | |
| run: terraform fmt -check | |
| # Generates Terraform input variables | |
| - name: Generate Terraform Variables | |
| shell: bash | |
| env: | |
| WEB_SECRETS: ${{ toJSON(secrets) }} | |
| WEB_VARS: ${{ toJSON(vars) }} | |
| run: | | |
| printf '%s\n' "$WEB_SECRETS" > tmp-secrets.json | |
| printf '%s\n' "$WEB_VARS" > tmp-vars.json | |
| jq 'with_entries(.key |= ascii_downcase)' tmp-secrets.json > web-secrets.auto.tfvars.json | |
| jq 'with_entries(.key |= ascii_downcase)' tmp-vars.json > web-vars.auto.tfvars.json | |
| # Generates an execution plan for Terraform | |
| # An exit code of 0 indicated no changes, 1 a terraform failure, 2 there are pending changes. | |
| - name: Terraform Plan | |
| id: tf-plan | |
| run: | | |
| export exitcode=0 | |
| terraform plan -detailed-exitcode -no-color -out tfplan || export exitcode=$? | |
| echo "exitcode=$exitcode" >> $GITHUB_OUTPUT | |
| if [ $exitcode -eq 1 ]; then | |
| echo Terraform Plan Failed! | |
| exit 1 | |
| else | |
| exit 0 | |
| fi | |
| # Save Terraform Plan | |
| - name: Publish Terraform Plan | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: tfplan | |
| path: terraform/tfplan | |
| # Create string output of Terraform Plan | |
| - name: Create String Output | |
| id: tf-plan-string | |
| run: | | |
| TERRAFORM_PLAN=$(terraform show -no-color tfplan) | |
| delimiter="$(openssl rand -hex 8)" | |
| echo "summary<<${delimiter}" >> $GITHUB_OUTPUT | |
| echo "## Terraform Plan Output" >> $GITHUB_OUTPUT | |
| echo "<details><summary>Click to expand</summary>" >> $GITHUB_OUTPUT | |
| echo "" >> $GITHUB_OUTPUT | |
| echo '```terraform' >> $GITHUB_OUTPUT | |
| echo "$TERRAFORM_PLAN" >> $GITHUB_OUTPUT | |
| echo '```' >> $GITHUB_OUTPUT | |
| echo "</details>" >> $GITHUB_OUTPUT | |
| echo "${delimiter}" >> $GITHUB_OUTPUT | |
| # Publish Terraform Plan as task summary | |
| - name: Publish Terraform Plan to Task Summary | |
| env: | |
| SUMMARY: ${{ steps.tf-plan-string.outputs.summary }} | |
| run: | | |
| echo "$SUMMARY" >> $GITHUB_STEP_SUMMARY | |
| terraform-apply: | |
| name: 'Terraform Apply' | |
| if: needs.terraform-plan.outputs.tfplanExitCode == 2 | |
| runs-on: ubuntu-latest | |
| environment: ${{ inputs.environment }} | |
| needs: [terraform-plan] | |
| steps: | |
| # Checkout the repository to the GitHub Actions runner | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| # Install the latest version of Terraform CLI and configure the Terraform CLI configuration file with a Terraform Cloud user API token | |
| - name: Setup Terraform | |
| uses: hashicorp/setup-terraform@v3 | |
| with: | |
| terraform_version: 1.5.6 | |
| # Initialise a new or existing Terraform working directory by creating initial files, loading any remote state, downloading modules, etc. | |
| - name: Terraform Init | |
| run: > | |
| terraform init | |
| -backend-config="resource_group_name=${{ secrets.TERRAFORM_STATE_RESOURCE_GROUP }}" | |
| -backend-config="storage_account_name=${{ secrets.TERRAFORM_STATE_STORAGE_ACCOUNT_NAME }}" | |
| -backend-config="container_name=${{ secrets.TERRAFORM_STATE_STORAGE_CONTAINER_NAME }}" | |
| -backend-config="key=${{ secrets.TERRAFORM_STATE_KEY }}" | |
| # Generates Terraform input variables | |
| - name: Generate Terraform Variables | |
| shell: bash | |
| env: | |
| WEB_SECRETS: ${{ toJSON(secrets) }} | |
| WEB_VARS: ${{ toJSON(vars) }} | |
| run: | | |
| printf '%s\n' "$WEB_SECRETS" > tmp-secrets.json | |
| printf '%s\n' "$WEB_VARS" > tmp-vars.json | |
| jq 'with_entries(.key |= ascii_downcase)' tmp-secrets.json > web-secrets.auto.tfvars.json | |
| jq 'with_entries(.key |= ascii_downcase)' tmp-vars.json > web-vars.auto.tfvars.json | |
| # Download saved plan from artifacts | |
| - name: Download Terraform Plan | |
| uses: actions/download-artifact@v4 | |
| with: | |
| name: tfplan | |
| path: terraform/tfplan | |
| # Terraform Apply | |
| - name: Terraform Apply | |
| run: terraform apply -auto-approve tfplan/tfplan |