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| 1 | +#!/bin/bash |
| 2 | +set -e |
| 3 | +set -o pipefail |
| 4 | + |
| 5 | +# This script checks for open PRs from dependabot that have all checks passing and have not been |
| 6 | +# modified by another user, and approves+merges them automatically. |
| 7 | +# To be run as a GitHub action. |
| 8 | + |
| 9 | +# Check if repository argument is provided |
| 10 | +if [ -z "$1" ]; then |
| 11 | + echo "Error: Repository name not provided." |
| 12 | + echo "Usage: $0 <owner/repo>" |
| 13 | + echo "Example: $0 hyperlight-dev/hyperlight" |
| 14 | + exit 1 |
| 15 | +fi |
| 16 | + |
| 17 | +REPO="$1" |
| 18 | +echo "Checking for open Dependabot PRs to approve and merge in $REPO..." |
| 19 | + |
| 20 | +# Get all open PRs from dependabot |
| 21 | +dependabot_prs=$(gh pr list -R "$REPO" --author "dependabot[bot]" --state open --json number,title,reviews) |
| 22 | + |
| 23 | +# Exit early if no PRs found |
| 24 | +if [ -z "$dependabot_prs" ] || [ "$dependabot_prs" = "[]" ]; then |
| 25 | + echo "No open Dependabot PRs found in $REPO" |
| 26 | + exit 0 |
| 27 | +fi |
| 28 | + |
| 29 | +# Count how many PRs we found |
| 30 | +pr_count=$(echo "$dependabot_prs" | jq 'length') |
| 31 | +echo "Found $pr_count open Dependabot PRs in $REPO" |
| 32 | + |
| 33 | +# Process each PR |
| 34 | +echo "$dependabot_prs" | jq -c '.[]' | while read -r pr; do |
| 35 | + pr_number=$(echo "$pr" | jq -r '.number') |
| 36 | + pr_title=$(echo "$pr" | jq -r '.title') |
| 37 | + |
| 38 | + echo "Processing PR #$pr_number: $pr_title" |
| 39 | + |
| 40 | + # Check if PR only modifies allowed files |
| 41 | + pr_files=$(gh pr view "$pr_number" -R "$REPO" --json files) |
| 42 | + invalid_files=$(echo "$pr_files" | jq -r '.files[].path' | grep -v -E '(Cargo\.toml|Cargo\.lock|\.github/workflows/.+)' || true) |
| 43 | + |
| 44 | + if [ -n "$invalid_files" ]; then |
| 45 | + echo " ❌ PR #$pr_number modifies files that are not allowed for auto-merge:" |
| 46 | + echo ${invalid_files/#/ - } |
| 47 | + echo " ℹ️ Only changes to Cargo.toml, Cargo.lock, or .github/workflows/ files are allowed" |
| 48 | + continue |
| 49 | + fi |
| 50 | + |
| 51 | + echo " ✅ PR #$pr_number only modifies allowed files (Cargo.toml, Cargo.lock, or .github/workflows/)" |
| 52 | + |
| 53 | + # First, get detailed PR information including all checks |
| 54 | + pr_details=$(gh pr view "$pr_number" -R "$REPO" --json statusCheckRollup,state) |
| 55 | + |
| 56 | + # Check if all status checks have passed (regardless of required or not) |
| 57 | + all_checks_pass=true |
| 58 | + has_pending_checks=false |
| 59 | + failed_checks="" |
| 60 | + |
| 61 | + # First identify checks that are still in progress |
| 62 | + pending_checks=$(echo "$pr_details" | jq -r '.statusCheckRollup[] | select(.status == "IN_PROGRESS" or .status == "QUEUED" or .status == "PENDING") | .name') |
| 63 | + |
| 64 | + if [ -n "$pending_checks" ]; then |
| 65 | + echo " ⏳ PR #$pr_number has pending checks:" |
| 66 | + echo "$pending_checks" | sed 's/^/ - /' |
| 67 | + echo " ℹ️ We will still approve the PR so it can merge automatically once all checks pass" |
| 68 | + has_pending_checks=true |
| 69 | + fi |
| 70 | + |
| 71 | + # Check for failed checks - only include checks that have a conclusion and are not still running |
| 72 | + # Explicitly exclude checks with status IN_PROGRESS, QUEUED, or PENDING |
| 73 | + failed_checks=$(echo "$pr_details" | jq -r '.statusCheckRollup[] | |
| 74 | + select(.conclusion != null and |
| 75 | + .conclusion != "SUCCESS" and |
| 76 | + .conclusion != "NEUTRAL" and |
| 77 | + .conclusion != "SKIPPED" and |
| 78 | + .status != "IN_PROGRESS" and |
| 79 | + .status != "QUEUED" and |
| 80 | + .status != "PENDING") | .name') |
| 81 | + |
| 82 | + if [ -n "$failed_checks" ]; then |
| 83 | + echo " ❌ PR #$pr_number has failed checks:" |
| 84 | + echo "$failed_checks" | sed 's/^/ - /' |
| 85 | + all_checks_pass=false |
| 86 | + continue |
| 87 | + fi |
| 88 | + |
| 89 | + # If we've reached here, either all checks have passed or some are pending |
| 90 | + if [ "$has_pending_checks" = false ]; then |
| 91 | + echo " ✅ All status checks passed for PR #$pr_number" |
| 92 | + fi |
| 93 | + |
| 94 | + # Check if PR has been modified by someone other than dependabot |
| 95 | + pr_commits=$(gh pr view "$pr_number" -R "$REPO" --json commits) |
| 96 | + non_dependabot_authors=$(echo "$pr_commits" | jq -r '.commits[].authors[].login' | grep -v -e "dependabot\[bot\]" -e "^$" || true) |
| 97 | + |
| 98 | + if [ -n "$non_dependabot_authors" ]; then |
| 99 | + echo " ❌ PR #$pr_number has been modified by users other than dependabot: $non_dependabot_authors" |
| 100 | + continue |
| 101 | + fi |
| 102 | + |
| 103 | + # Check if PR needs approval (i.e., hasn't been approved already) |
| 104 | + already_approved=$(echo "$pr" | jq -r '.reviews[] | select(.state == "APPROVED") | .state' | grep -c "APPROVED" || true) |
| 105 | + |
| 106 | + if [ "$already_approved" -eq 0 ]; then |
| 107 | + echo " ✅ Approving PR #$pr_number" |
| 108 | + gh pr review "$pr_number" -R "$REPO" --approve -b "Automatically approved by dependabot auto-approve workflow" |
| 109 | + else |
| 110 | + echo " ℹ️ PR #$pr_number is already approved" |
| 111 | + fi |
| 112 | + |
| 113 | + if [ "$has_pending_checks" = true ] || [ "$all_checks_pass" = true ]; then |
| 114 | + # Check if PR is up-to-date with base branch |
| 115 | + merge_status=$(gh pr view "$pr_number" -R "$REPO" --json mergeStateStatus -q '.mergeStateStatus') |
| 116 | + |
| 117 | + if [ "$merge_status" != "CLEAN" ]; then |
| 118 | + echo " ⚠️ PR #$pr_number is not up to date (status: $merge_status)" |
| 119 | + else |
| 120 | + echo " ✅ PR #$pr_number is up to date with base branch" |
| 121 | + fi |
| 122 | + |
| 123 | + # Enable auto-merge with squash strategy |
| 124 | + echo " ✅ Enabling auto-merge (squash strategy) for PR #$pr_number" |
| 125 | + gh pr merge "$pr_number" -R "$REPO" --auto --squash |
| 126 | + echo " ✅ Auto-merge enabled for PR #$pr_number" |
| 127 | + fi |
| 128 | + |
| 129 | +done |
| 130 | + |
| 131 | +echo "Finished processing Dependabot PRs for $REPO" |
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