f5610036b9
- Add early trap setup to avoid exit code issues - Handle missing toolchain directive gracefully with `|| true` - Add logic to detect when toolchain is expected to be missing - Add informative messages about missing toolchain - Implement smart toolchain handling: - Skip toolchain when go version matches latest (redundant) - Add toolchain when go version is older than latest - Update toolchain when it exists but is outdated Co-authored-by: williammartin <1611510+williammartin@users.noreply.github.com>
154 lines
5.8 KiB
Bash
Executable file
154 lines
5.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# bump-go.sh — Update go.mod `go` directive and toolchain to latest stable Go release.
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#
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# Usage:
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# ./bump-go.sh [--apply|-a] <path/to/go.mod>
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#
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# By default the script runs in *dry‑run* mode: it creates a local branch,
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# commits the version bump, shows the exact patch, **checks for an existing PR**
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# with the same title, and exits. Nothing is pushed. The temporary branch is
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# deleted automatically on exit, so your working tree stays clean. Pass
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# --apply (or -a) to push the branch and open a new PR *only if one doesn’t
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# already exist*.
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# -----------------------------------------------------------------------------
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set -euo pipefail
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usage() {
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echo "Usage: $0 [--apply|-a] <path/to/go.mod>" >&2
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exit 1
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}
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# ---- Argument parsing -------------------------------------------------------
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APPLY=0
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GO_MOD=""
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--apply|-a) APPLY=1 ;;
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-h|--help) usage ;;
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*) [[ -z "$GO_MOD" ]] && GO_MOD="$1" || usage ;;
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esac
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shift
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done
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[[ -z "$GO_MOD" ]] && usage
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[[ -f "$GO_MOD" ]] || { echo "Error: '$GO_MOD' not found" >&2; exit 1; }
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# ---- Discover latest stable Go release --------------------------------------
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echo "Fetching latest stable Go version…"
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LATEST_JSON=$(curl -fsSL https://go.dev/dl/?mode=json | jq -c '[.[] | select(.stable==true)][0]')
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FULL_VERSION=$(jq -r '.version' <<< "$LATEST_JSON") # e.g. go1.23.4
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TOOLCHAIN_VERSION="${FULL_VERSION#go}" # e.g. 1.23.4
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# `go mod tidy` will always add `.0` if there is no minor version
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# so let's just ensure .0 is suffixed to the go directive.
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GO_DIRECTIVE_VERSION="$(cut -d. -f1-2 <<< "$TOOLCHAIN_VERSION").0"
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echo " → go : $GO_DIRECTIVE_VERSION"
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echo " → toolchain : $TOOLCHAIN_VERSION"
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# ---- Prepare Git branch ---------------------------------------------------
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CURRENT_GO_DIRECTIVE=$(grep -E '^go ' "$GO_MOD" | cut -d ' ' -f2)
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CURRENT_TOOLCHAIN_DIRECTIVE=$(grep -E '^toolchain ' "$GO_MOD" | cut -d ' ' -f2 || true)
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BRANCH="bump-go-$TOOLCHAIN_VERSION"
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BRANCH_CREATED=0
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# Set up cleanup trap early (before any potential exits)
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cleanup() {
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if [[ $BRANCH_CREATED -eq 1 ]]; then
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git checkout - >/dev/null 2>&1 || true
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git branch -D "$BRANCH" >/dev/null 2>&1 || true
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fi
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}
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trap cleanup EXIT
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# Check if we're already up to date
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# Note: toolchain directive may be missing when go directive == latest toolchain.
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# This is expected behavior - `go mod tidy` removes the toolchain line when
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# the minimum Go version matches the latest toolchain, as it's redundant.
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if [[ "$CURRENT_GO_DIRECTIVE" = "$GO_DIRECTIVE_VERSION" ]]; then
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if [[ -z "$CURRENT_TOOLCHAIN_DIRECTIVE" ]]; then
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# No toolchain directive present - this is expected when go version == latest
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echo "Already on latest Go version: $CURRENT_GO_DIRECTIVE"
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echo " → Note: No toolchain directive (expected when go version matches latest toolchain)"
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exit 0
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elif [[ "$CURRENT_TOOLCHAIN_DIRECTIVE" = "go$TOOLCHAIN_VERSION" ]]; then
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echo "Already on latest Go version: $CURRENT_GO_DIRECTIVE (toolchain: $CURRENT_TOOLCHAIN_DIRECTIVE)"
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exit 0
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fi
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fi
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echo "Creating branch $BRANCH"
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git switch -c "$BRANCH" >/dev/null 2>&1
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BRANCH_CREATED=1
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# ---- Patch go.mod -----------------------------------------------------------
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if [[ "$CURRENT_GO_DIRECTIVE" != "$GO_DIRECTIVE_VERSION" ]]; then
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sed -Ei.bak "s/^go [0-9]+\.[0-9]+.*$/go $GO_DIRECTIVE_VERSION/" "$GO_MOD"
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echo " • go directive $CURRENT_GO_DIRECTIVE → $GO_DIRECTIVE_VERSION"
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fi
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# Handle toolchain directive - may need to add, update, or skip
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if [[ -z "$CURRENT_TOOLCHAIN_DIRECTIVE" ]]; then
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# No toolchain directive exists
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if [[ "$GO_DIRECTIVE_VERSION" = "$(cut -d. -f1-2 <<< "$TOOLCHAIN_VERSION").0" ]]; then
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# go directive matches latest toolchain - toolchain line is redundant
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echo " • toolchain directive not needed (go version matches latest toolchain)"
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else
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# go directive is older than latest toolchain - add toolchain directive after go line
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sed -Ei.bak "/^go [0-9]+\.[0-9]+/a\\
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toolchain go$TOOLCHAIN_VERSION" "$GO_MOD"
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echo " • toolchain directive added: go$TOOLCHAIN_VERSION"
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fi
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elif [[ "$CURRENT_TOOLCHAIN_DIRECTIVE" != "go$TOOLCHAIN_VERSION" ]]; then
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# Toolchain directive exists but needs updating
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sed -Ei.bak "s/^toolchain go[0-9]+\.[0-9]+\.[0-9]+.*$/toolchain go$TOOLCHAIN_VERSION/" "$GO_MOD"
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echo " • toolchain $CURRENT_TOOLCHAIN_DIRECTIVE → go$TOOLCHAIN_VERSION"
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fi
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rm -f "$GO_MOD.bak"
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git add "$GO_MOD"
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# ---- Commit -----------------------------------------------------------------
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COMMIT_MSG="Bump Go to $TOOLCHAIN_VERSION"
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git commit -m "$COMMIT_MSG" >/dev/null
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COMMIT_HASH=$(git rev-parse --short HEAD)
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PR_TITLE="$COMMIT_MSG"
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# ---- Check for existing PR --------------------------------------------------
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existing_pr=$(gh search prs --repo cli/cli --match title "$PR_TITLE" --json title --jq "map(select(.title == \"$PR_TITLE\") | .title) | length > 0")
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if [[ "$existing_pr" == "true" ]]; then
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echo "Found an existing open PR titled '$PR_TITLE'. Skipping push/PR creation."
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if [[ $APPLY -eq 0 ]]; then
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echo -e "\n=== DRY‑RUN DIFF (commit $COMMIT_HASH):\n"
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git --no-pager show --color "$COMMIT_HASH"
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fi
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exit 0
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fi
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# ---- Dry‑run handling -------------------------------------------------------
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if [[ $APPLY -eq 0 ]]; then
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echo -e "\n=== DRY‑RUN DIFF (commit $COMMIT_HASH):\n"
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git --no-pager show --color "$COMMIT_HASH"
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echo -e "\nIf --apply were provided, script would continue with:\n git push -u origin $BRANCH\n gh pr create --title \"$PR_TITLE\" --body <body>\n"
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exit 0
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fi
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# ---- Push & PR --------------------------------------------------------------
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PR_BODY=$(cat <<EOF
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This PR updates Go to the latest stable release.
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* **go directive:** \`$GO_DIRECTIVE_VERSION\`
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* **toolchain:** \`$TOOLCHAIN_VERSION\`
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EOF
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)
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git push -u origin "$BRANCH"
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gh pr create --title "$PR_TITLE" --body "$PR_BODY" --fill
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echo "Done!"
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