From: Matthias Kruk <m@m10k.eu>
Date: Wed, 14 Apr 2021 00:12:59 +0000 (+0900)
Subject: buildbot: Add script to automatically perform builds on git repositories
X-Git-Url: https://git.corax.cc/?a=commitdiff_plain;h=d74b948c2d5fe2e51dd31791ccddacef2c0bd249;p=foundry

buildbot: Add script to automatically perform builds on git repositories

This commit adds a script that can be used to watch a git repository for
changes and automatically perform a task if a change has been detected.
---

diff --git a/buildbot.sh b/buildbot.sh
new file mode 100644
index 0000000..a8f58e1
--- /dev/null
+++ b/buildbot.sh
@@ -0,0 +1,146 @@
+#!/bin/bash
+
+sem="buildbot"
+
+build_packages() {
+	local sourcetree="$1"
+	local gpgkey="$2"
+
+	local output
+	local package
+	local npkgs
+
+	npkgs=0
+
+	if ! output=(cd "$sourcetree" && dpkg-buildpackage --sign-key="$gpgkey"); then
+		log_error "Could not build $sourcetree"
+		echo "$output" | log_highlight "dpkg-buildpackage" | log_error
+
+		return 1
+	fi
+
+	while read -r package; do
+		if ! output=$(dpkg-sig --sign builder -k "$gpgkey" "$package"); then
+			log_error "Could not sign $package"
+			echo "output" | log_highlight "dpkg-sig" | log_error
+			return 1
+		fi
+
+		if ! realpath "$package"; then
+			log_error "Could not normalize path $package"
+			return 1
+		fi
+
+		((npkgs++))
+	done < <(find "$sourcetree/.." -mindepth 1 -maxdepth 1 -type f -iname "*.deb")
+
+	if (( npkgs == 0 )); then
+		return 1
+	fi
+
+	return 0
+}
+
+queue_put_package() {
+	local queue="$1"
+
+	local lock
+	local sem
+
+	lock="$queue/lock"
+	sem="$queue/sem"
+
+	if ! mutex_lock "$lock"; then
+		log_error "Could not acquire lock on $queue"
+		return 1
+	fi
+
+	log_info "Moving $package to $queue"
+	if ! mv "$package" "$queue/queue"; then
+		log_error "Could not move $package"
+	else
+		if ! sem_post "$sem"; then
+			log_error "Could not post semaphore $sem"
+		fi
+	fi
+
+	mutex_unlock "$lock"
+
+	return 0
+}
+
+move_packages() {
+	local queue="$1"
+
+	local lock
+	local sem
+
+	lock="$resultdir/lock"
+	sem="$resultdir/queued"
+
+	while read -r package; do
+		queue_put_package "$queue" "$package"
+	done
+
+	return 0
+}
+
+build_repository() {
+	local repository="$1"
+	local gpgkey="$2"
+	local resultdir="$3"
+
+	local buildroot
+	local packages
+	local err
+
+	err=1
+
+	if ! buildroot=$(mktemp -d); then
+		log_error "Could not create buildroot"
+		return 1
+	fi
+
+	if ! git clone "$repository" "$buildroot/source" &>/dev/null; then
+		log_error "Could not checkout source"
+	elif ! packages=$(build_packages "$buildroot/source" "$gpgkey"); then
+		log_error "Could not build package"
+	elif ! move_packages "$resultdir" <<< "$packages"; then
+		log_error "Could not move packages"
+	else
+		log_info "Build succeeded: $repository"
+		err=0
+	fi
+
+	if ! rm -rf "$buildroot"; then
+		log_error "Could not clean up $buildroot"
+	fi
+
+	return "$err"
+}
+
+
+main() {
+	opt_add_arg "k" "gpgkey"     "yes" "" "The GPG key id to use"
+	opt_add_arg "q" "queue"      "yes" "" "The queue where new packages should be placed"
+	opt_add_arg "r" "repository" "yes" "" "The repository to watch"
+
+	if ! opt_parse "$@"; then
+		return 1
+	fi
+
+	return 0
+}
+
+{
+	if ! . toolbox.sh; then
+		exit 1
+	fi
+
+	if ! include "log" "opt" "conf" "sem"; then
+		exit 1
+	fi
+
+	main "$@"
+	exit "$?"
+}