From 33740a622c18a2a15cc2bbf850a4899512a5d58d Mon Sep 17 00:00:00 2001
From: Neil Hanlon <neil@rockylinux.org>
Date: Tue, 12 Jul 2022 10:38:53 -0400
Subject: [PATCH] Add script to generate new branches

---
 Dockerfile               |   2 +-
 build.meta               |   1 -
 filelist.txt             |   1 -
 packages.txt             |   1 -
 util/fetch-and-branch.sh | 120 +++++++++++++++++++++++++++++++++++++++
 5 files changed, 121 insertions(+), 4 deletions(-)
 delete mode 100644 build.meta
 delete mode 100644 filelist.txt
 delete mode 100644 packages.txt
 create mode 100644 util/fetch-and-branch.sh

diff --git a/Dockerfile b/Dockerfile
index 45441e5..efc5c05 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
 FROM scratch
-ADD rocky-8.6-Container-Minimal.tar.xz /
+ADD layer.tar.xz /
 
 CMD ["/bin/bash"]
diff --git a/build.meta b/build.meta
deleted file mode 100644
index 8b13789..0000000
--- a/build.meta
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/filelist.txt b/filelist.txt
deleted file mode 100644
index 8b13789..0000000
--- a/filelist.txt
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/packages.txt b/packages.txt
deleted file mode 100644
index 8b13789..0000000
--- a/packages.txt
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/util/fetch-and-branch.sh b/util/fetch-and-branch.sh
new file mode 100644
index 0000000..909b717
--- /dev/null
+++ b/util/fetch-and-branch.sh
@@ -0,0 +1,120 @@
+#!/usr/bin/env bash
+
+version=${1}
+type=${2}
+arch=${3}
+date=${4:-$(date +%Y%m%d)}
+revision=${5:-0}
+
+major=${1:0:1}
+minor=${1:2:1}
+TEMPLATE="library-template"
+
+
+usage() {
+  printf "%s: RELEASE TYPE ARCH [DATE]\n\n" $0
+  log "$1"
+}
+
+log() {
+  printf "[%s] :: %s\n" "$(date -Isec)" "$1"
+}
+
+log-cmd() {
+  set -x
+  command $@
+  set +x
+}
+
+if [[ -z "$version" || ! "$version" =~ [0-9]+.[0-9]+ ]]; then
+  usage "Invalid or empty version"
+  exit 1
+fi
+
+case "$type" in
+  Base|Minimal) ;;
+  *) 
+    usage "Invalid type"
+    exit 1
+    ;;
+esac
+
+
+
+pattern=$(printf "Rocky-%s.%s-%s-%s" "$version" "$date" "$type" "$arch")
+
+has-branch(){
+  local res=$(log-cmd git branch --list "$1")
+  if [[ -z $res ]]; then
+    return 1
+  fi
+  return 0
+}
+
+current-branch() {
+  local res=$(log-cmd git branch --show-current)
+  ret=0
+  if [[ ! -z $res ]]; then
+    ret=1
+  fi
+  echo $res
+  return $ret
+}
+
+generate-packagelist() {
+  log "Generating package list"
+  if [[ -f build.meta ]]; then
+    log-cmd xmllint --xpath "//packages/*/@name" <(printf "$(jq '.icicle' < build.meta)\n" | tr -d '\\' | tail -c +2 | head -c -2) | \
+      awk -F\= '{print substr($2,2,length($2)-2)}' | \
+      sort > packages.txt
+    return $?
+  fi
+  log "No build.meta found. Skipping packagelist generation"
+  return 1
+}
+
+generate-filelist() {
+  log "Generating filelist"
+  if [[ -f layer.tar.xz ]]; then
+    log-cmd tar -tf layer.tar.xz > filelist.txt
+    return $?
+  fi
+  log "No layer.tar.xz found. Skipping filelist generation"
+  return 1
+}
+
+latest-build() {
+ local path=$(printf "s3://resf-empanadas/buildimage-%s-%s/Rocky-%s-Container-%s-%s-%s.%s.%s" $version $arch $major $type $version $date $revision $arch)
+ local res=$(log-cmd aws --region us-east-2 --profile resf-peridot-prod s3 ls --recursive "$path" | sort | tail -1 | awk '{print $4}' | sed 's,^\(.*\)/.*$,\1,g')
+ echo "$res"
+ return 0
+}
+
+if has-branch $pattern; then
+  usage "Branch ${pattern} already exists. Exiting."
+  exit 1
+fi
+
+log "Creating branch ${pattern}"
+
+log-cmd git checkout -b "${pattern}" $TEMPLATE
+
+branch=$(current-branch)
+if [[ "${branch}" != "${pattern}" ]]; then
+  log "Not on the proper branch after creation. Exiting for safety."
+  exit 127
+fi
+
+# Clear the history of the branch (Required for Docker Hub Official Images to only have one commit on the branch)
+log-cmd git update-ref -d HEAD
+
+builddir=$(latest-build)
+if [[ -z "$builddir" ]]; then
+  log "Builddir not found. Exiting"
+  exit 3
+fi
+
+log-cmd aws --region us-east-2 --profile resf-peridot-prod s3 sync "s3://resf-empanadas/$builddir" $PWD
+
+generate-packagelist
+generate-filelist