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fix: post terragrunt plan comment even when parsing fails (#1773)

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This commit is contained in:
Zack Pollard
2026-07-02 13:03:23 +02:00
committed by GitHub
parent 91f39311fd
commit e93e230cdf
2 changed files with 21 additions and 10 deletions
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.github/scripts/parse-plan.sh
+12 -6
View File
@@ -19,7 +19,8 @@ echo ""
# Extract unique module names from terragrunt log prefixes
# Format: "HH:MM:SS.mmm (INFO|STDOUT|STDERR) [module/name] ..."
modules=$(grep -oP '\d+:\d+:\d+\.\d+\s+(?:INFO|STDOUT|STDERR)\s+\[\K[\w/-]+(?=\])' "$FILE" | sort -u)
# A single-unit run (terragrunt invoked from inside the unit) logs as "[.]"
modules=$(grep -oP '\d+:\d+:\d+\.\d+\s+(?:INFO|STDOUT|STDERR)\s+\[\K[\w./-]+(?=\])' "$FILE" | sort -u)
if [ -z "$modules" ]; then
echo "⚠️ No modules detected in plan output — the output format may have changed."
@@ -28,20 +29,25 @@ if [ -z "$modules" ]; then
fi
for module in $modules; do
# Module names only contain [\w./-], so a dot is the only regex-special char
module_re=${module//./\\.}
display=$module
[ "$module" = "." ] && display="(root)"
# Extract tofu output lines for this module, stripping everything up to "tofu: "
module_output=$(grep -P "(?:STDOUT|STDERR)\s+\[$module\] tofu: " "$FILE" | sed "s#.*\[$module\] tofu: ##")
module_output=$(grep -P "(?:STDOUT|STDERR)\s+\[$module_re\] tofu: " "$FILE" | sed "s#.*\[$module_re\] tofu: ##")
if [ -z "$module_output" ]; then
echo "<details><summary>ℹ️ <code>$module</code> — No plan output</summary></details>"
echo "<details><summary>ℹ️ <code>$display</code> — No plan output</summary></details>"
echo ""
continue
fi
if echo "$module_output" | grep -q "No changes"; then
echo "<details><summary>✅ <code>$module</code> — No changes</summary></details>"
echo "<details><summary>✅ <code>$display</code> — No changes</summary></details>"
echo ""
elif echo "$module_output" | grep -qE "Error:|error:"; then
echo "<details><summary>❌ <code>$module</code> — Error</summary>"
echo "<details><summary>❌ <code>$display</code> — Error</summary>"
echo ""
echo '```'
echo "$module_output" | grep -A5 -E "Error:|error:"
@@ -57,7 +63,7 @@ for module in $modules; do
'Initializing|Downloading|Installing |Installed |Found |Locking |Lock |Using |Reusing|Successfully configured|successfully initialized|providers\.lock|find_in_parent|includes|Reading\.\.\.|Read complete|Refreshing state|backend|OpenTofu will|use this backend|Upgrading|terraform\.io|registry\.opentofu|has been successfully|copying configuration|Copied!|Acquiring state lock|^\s*$' \
)
echo "<details><summary>⚠️ <code>$module</code> — ${summary:-Changes detected}</summary>"
echo "<details><summary>⚠️ <code>$display</code> — ${summary:-Changes detected}</summary>"
echo ""
echo '```hcl'
echo "$plan_output"
.github/workflows/terragrunt.yml
+9 -4
View File
@@ -135,13 +135,16 @@ jobs:
GH_TOKEN: ${{ github.token }}
RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
run: |
# Collect parse failures instead of aborting so the comment is
# always posted; the step still fails at the end if any parse broke.
parse_failed=0
{
echo "## Terraform Plan"
echo ""
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-shared.txt" "Shared"
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-dev.txt" "Scoped (dev)"
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-prod.txt" "Scoped (prod)"
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-staging.txt" "Scoped (staging — zitadel customer)"
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-shared.txt" "Shared" || parse_failed=1
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-dev.txt" "Scoped (dev)" || parse_failed=1
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-prod.txt" "Scoped (prod)" || parse_failed=1
bash "$GITHUB_WORKSPACE/.github/scripts/parse-plan.sh" "$RUNNER_TEMP/plan-staging.txt" "Scoped (staging — zitadel customer)" || parse_failed=1
} > "$RUNNER_TEMP/plan-comment.md"
char_count=$(wc -c < "$RUNNER_TEMP/plan-comment.md")
@@ -166,6 +169,8 @@ jobs:
gh pr comment "${{ github.event.pull_request.number }}" --body-file "$RUNNER_TEMP/plan-comment.md"
fi
exit "$parse_failed"
deploy:
runs-on: ubuntu-latest
if: github.ref == 'refs/heads/main'