From: Martin Vidner <mvidner@suse.cz>
Date: Tue, 24 Nov 2015 09:40:36 +0000 (+0100)
Subject: From Git to OBS with fewer dependencies.
X-Git-Tag: v0.3.3~21^2~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c8c5d868f0b43c95ad4c20214a8982c5259659a;p=thirdparty%2Fsnapper.git

From Git to OBS with fewer dependencies.
---

diff --git a/Makefile.ci b/Makefile.ci
new file mode 100644
index 00000000..60cc4ab3
--- /dev/null
+++ b/Makefile.ci
@@ -0,0 +1,19 @@
+# -*- Makefile -*-
+# if "rake" is undesirable, reimplement it in make?
+# Not everything, just the bare minimum that makes sense
+# And let Rakefile be a redirector to this Makefile.ci
+
+# Simplicity is complicated?
+
+# Usage in Jenkins:
+# make -f Makefile.ci osc:sr
+# make -f Makefile.ci osc:ci
+# make -f Makefile.ci osc:build
+# make -f Makefile.ci package
+
+.PHONY: package
+
+package:
+	./git-to-obs-package \
+		-P YaST:Head -p snapper \
+		-c 'make -f Makefile.repo && make package'
diff --git a/git-to-obs-package b/git-to-obs-package
new file mode 100755
index 00000000..26dfe740
--- /dev/null
+++ b/git-to-obs-package
@@ -0,0 +1,109 @@
+#!/bin/bash
+set -eu
+
+# Given a Git repo of a package in the Open Build Service,
+# make a source package from that repo,
+# using `osc` to bring the dependencies to a chroot.
+
+# Minimal dependencies:
+# - git-core
+# - osc
+# - build
+
+main() {
+    local USAGE_TEXT='
+Usage: main <options>
+
+Options:
+-P <OBS project>
+-p <OBS package>
+-c <command> Shell command to make a package
+'
+    local COMMAND PROJECT PACKAGE
+    local USAGE=false RC=0
+    while getopts c:hP:p: FLAG; do
+        case $FLAG in
+            c) COMMAND="$OPTARG";;
+	    h) USAGE=true;;
+            P) PROJECT="$OPTARG";;
+	    p) PACKAGE="$OPTARG";;
+
+	    *) USAGE=true; RC=1;;
+        esac
+    done
+    shift $((OPTIND-1))
+
+    if $USAGE; then
+        echo "$USAGE_TEXT"
+        return $RC
+    fi
+
+    local GITDIR=`pwd`
+    OBSDIR=`pwd`/.obsdir
+    rm -rf $OBSDIR
+    osc checkout --output-dir=$OBSDIR $PROJECT $PACKAGE
+    cd $OBSDIR
+
+    export OSC_BUILD_ROOT=/var/tmp/build-root-git-to-obs
+    init_build_root
+
+    copy_git_to_chroot $GITDIR
+
+    make_package "$COMMAND"
+
+    fetch_package
+
+    # CLEANUP
+    cleanup_git_in_chroot
+}
+
+# short circuit the first build
+# in:
+#   cwd: obs
+#   $OSC_BUILD_ROOT
+# out:
+#   chroot at $OSC_BUILD_ROOT is initialized
+init_build_root() {
+    local SUCCESS_FILE=/tmp/build-root-ready
+
+    rm -f $OSC_BUILD_ROOT/$SUCCESS_FILE
+    sed -i -e "/^%build/atouch $SUCCESS_FILE; : intentional fail; exit 1" *.spec
+    osc build --build-uid=caller || :
+    rm $OSC_BUILD_ROOT/$SUCCESS_FILE # fails if not present
+
+}
+
+TMPGIT=/tmp/gitdir
+
+# in:
+#   $1 git dir
+#   $OSC_BUILD_ROOT
+copy_git_to_chroot() {
+    cleanup_git_in_chroot
+    mkdir -p  $OSC_BUILD_ROOT/$TMPGIT
+    rmdir     $OSC_BUILD_ROOT/$TMPGIT
+    cp -a $1  $OSC_BUILD_ROOT/$TMPGIT
+}
+
+# in:
+#   $OSC_BUILD_ROOT
+cleanup_git_in_chroot() {
+    rm -rf    $OSC_BUILD_ROOT/$TMPGIT
+}
+
+# in:
+#   $1 command to make package
+make_package() {
+    sudo chroot --userspec=$USER $OSC_BUILD_ROOT \
+        sh -c "cd ${TMPGIT#$OSC_BUILD_ROOT}; $1"
+}
+
+# in:
+#    pwd: obs dir
+
+fetch_package() {
+    rm -v *.tar.*
+    cp -av $OSC_BUILD_ROOT/$TMPGIT/package/* .
+}
+
+main "$@"