lotus/scripts/mkreleaselog
2021-04-08 01:36:04 -04:00

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#!/bin/zsh
#set -x
set -euo pipefail
export GO111MODULE=on
export GOPATH="$(go env GOPATH)"
alias jq="jq --unbuffered"
AUTHORS=(
# orgs
ipfs
ipld
libp2p
multiformats
filecoin-project
ipfs-shipyard
# Authors of personal repos used by go-ipfs that should be mentioned in the
# release notes.
whyrusleeping
Kubuxu
jbenet
Stebalien
marten-seemann
hsanjuan
lucas-clemente
warpfork
)
[[ -n "${REPO_FILTER+x}" ]] || REPO_FILTER="github.com/(${$(printf "|%s" "${AUTHORS[@]}"):1})"
[[ -n "${IGNORED_FILES+x}" ]] || IGNORED_FILES='^\(\.gx\|package\.json\|\.travis\.yml\|go.mod\|go\.sum|\.github|\.circleci\)$'
NL=$'\n'
ROOT_DIR="$(git rev-parse --show-toplevel)"
msg() {
echo "$*" >&2
}
statlog() {
local rpath="$GOPATH/src/$1"
local start="${2:-}"
local end="${3:-HEAD}"
local mailmap_file="$rpath/.mailmap"
if ! [[ -e "$mailmap_file" ]]; then
mailmap_file="$ROOT_DIR/.mailmap"
fi
git -C "$rpath" -c mailmap.file="$mailmap_file" log --use-mailmap --shortstat --no-merges --pretty="tformat:%H%n%aN%n%aE" "$start..$end" | while
read hash
read name
read email
read _ # empty line
read changes
do
changed=0
insertions=0
deletions=0
while read count event; do
if [[ "$event" =~ ^file ]]; then
changed=$count
elif [[ "$event" =~ ^insertion ]]; then
insertions=$count
elif [[ "$event" =~ ^deletion ]]; then
deletions=$count
else
echo "unknown event $event" >&2
exit 1
fi
done<<<"${changes//,/$NL}"
jq -n \
--arg "hash" "$hash" \
--arg "name" "$name" \
--arg "email" "$email" \
--argjson "changed" "$changed" \
--argjson "insertions" "$insertions" \
--argjson "deletions" "$deletions" \
'{Commit: $hash, Author: $name, Email: $email, Files: $changed, Insertions: $insertions, Deletions: $deletions}'
done
}
# Returns a stream of deps changed between $1 and $2.
dep_changes() {
{
<"$1"
<"$2"
} | jq -s 'JOIN(INDEX(.[0][]; .Path); .[1][]; .Path; {Path: .[0].Path, Old: (.[1] | del(.Path)), New: (.[0] | del(.Path))}) | select(.New.Version != .Old.Version)'
}
# resolve_commits resolves a git ref for each version.
resolve_commits() {
jq '. + {Ref: (.Version|capture("^((?<ref1>.*)\\+incompatible|v.*-(0\\.)?[0-9]{14}-(?<ref2>[a-f0-9]{12})|(?<ref3>v.*))$") | .ref1 // .ref2 // .ref3)}'
}
pr_link() {
local repo="$1"
local prnum="$2"
local ghname="${repo##github.com/}"
printf -- "[%s#%s](https://%s/pull/%s)" "$ghname" "$prnum" "$repo" "$prnum"
}
# Generate a release log for a range of commits in a single repo.
release_log() {
setopt local_options BASH_REMATCH
local repo="$1"
local start="$2"
local end="${3:-HEAD}"
local dir="$GOPATH/src/$repo"
local commit pr
git -C "$dir" log \
--format='tformat:%H %s' \
--first-parent \
"$start..$end" |
while read commit subject; do
# Skip gx-only PRs.
git -C "$dir" diff-tree --no-commit-id --name-only "$commit^" "$commit" |
grep -v "${IGNORED_FILES}" >/dev/null || continue
if [[ "$subject" =~ '^Merge pull request #([0-9]+) from' ]]; then
local prnum="${BASH_REMATCH[2]}"
local desc="$(git -C "$dir" show --summary --format='tformat:%b' "$commit" | head -1)"
printf -- "- %s (%s)\n" "$desc" "$(pr_link "$repo" "$prnum")"
elif [[ "$subject" =~ '\(#([0-9]+)\)$' ]]; then
local prnum="${BASH_REMATCH[2]}"
printf -- "- %s (%s)\n" "$subject" "$(pr_link "$repo" "$prnum")"
else
printf -- "- %s\n" "$subject"
fi
done
}
indent() {
sed -e 's/^/ /'
}
mod_deps() {
go list -json -m all | jq 'select(.Version != null)'
}
ensure() {
local repo="$1"
local commit="$2"
local rpath="$GOPATH/src/$repo"
if [[ ! -d "$rpath" ]]; then
msg "Cloning $repo..."
git clone "http://$repo" "$rpath" >&2
fi
if ! git -C "$rpath" rev-parse --verify "$commit" >/dev/null; then
msg "Fetching $repo..."
git -C "$rpath" fetch --all >&2
fi
git -C "$rpath" rev-parse --verify "$commit" >/dev/null || return 1
}
statsummary() {
jq -s 'group_by(.Author)[] | {Author: .[0].Author, Commits: (. | length), Insertions: (map(.Insertions) | add), Deletions: (map(.Deletions) | add), Files: (map(.Files) | add)}' |
jq '. + {Lines: (.Deletions + .Insertions)}'
}
recursive_release_log() {
local start="${1:-$(git tag -l | sort -V | grep -v -- '-rc' | grep 'v'| tail -n1)}"
local end="${2:-$(git rev-parse HEAD)}"
local repo_root="$(git rev-parse --show-toplevel)"
local package="$(cd "$repo_root" && go list)"
if ! [[ "${GOPATH}/${package}" != "${repo_root}" ]]; then
echo "This script requires the target package and all dependencies to live in a GOPATH."
return 1
fi
(
local result=0
local workspace="$(mktemp -d)"
trap "$(printf 'rm -rf "%q"' "$workspace")" INT TERM EXIT
cd "$workspace"
echo "Computing old deps..." >&2
git -C "$repo_root" show "$start:go.mod" >go.mod
mod_deps | resolve_commits | jq -s > old_deps.json
echo "Computing new deps..." >&2
git -C "$repo_root" show "$end:go.mod" >go.mod
mod_deps | resolve_commits | jq -s > new_deps.json
rm -f go.mod go.sum
printf -- "Generating Changelog for %s %s..%s\n" "$package" "$start" "$end" >&2
printf -- "- %s:\n" "$package"
release_log "$package" "$start" "$end" | indent
statlog "$package" "$start" "$end" > statlog.json
dep_changes old_deps.json new_deps.json |
jq --arg filter "$REPO_FILTER" 'select(.Path | match($filter))' |
# Compute changelogs
jq -r '"\(.Path) \(.New.Version) \(.New.Ref) \(.Old.Version) \(.Old.Ref // "")"' |
while read repo new new_ref old old_ref; do
if ! ensure "$repo" "$new_ref"; then
result=1
local changelog="failed to fetch repo"
else
statlog "$repo" "$old_ref" "$new_ref" >> statlog.json
local changelog="$(release_log "$repo" "$old_ref" "$new_ref")"
fi
if [[ -n "$changelog" ]]; then
printf -- "- %s (%s -> %s):\n" "$repo" "$old" "$new"
echo "$changelog" | indent
fi
done
echo
echo "Contributors"
echo
echo "| Contributor | Commits | Lines ± | Files Changed |"
echo "|-------------|---------|---------|---------------|"
statsummary <statlog.json |
jq -s 'sort_by(.Lines) | reverse | .[]' |
jq -r '"| \(.Author) | \(.Commits) | +\(.Insertions)/-\(.Deletions) | \(.Files) |"'
return "$status"
)
}
recursive_release_log "$@"