Add a script to automate the creation of meta-resin PRs

Change-Type: patch
Signed-off-by: Pablo Carranza Velez <pablo@resin.io>

.gitignore

@@ -1,5 +1,6 @@
 /node_modules/
 /automation/node_modules/
+/automation/meta-resin/
 *.swp
 data
 bin/gosuper

automation/pr-to-meta-resin.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+# PR a supervisor release to meta-resin
+#
+# It clones meta-resin and opens a PR changing the supervisor version to $TAG.
+# If a meta-resin folder exists, it assumes it has a meta-resin git repo.
+#
+# If $PR_1X is "true", an additional PR for 1.X will be created.
+#
+# Requires $GITHUB_USERNAME and $GITHUB_PASSWORD to push and create the pull-request.
+# Requires $TAG to be set to the supervisor version to use.
+#
+
+set -e
+
+THIS_FILE=$0
+if [ -z "$TAG" ]; then
+	cat $THIS_FILE | awk '{if(/^#/)print;else exit}' | tail -n +2 | sed 's/\#//'
+	exit 1
+fi
+
+if [[ -z "$GITHUB_PASSWORD" || -z "$GITHUB_USERNAME" ]]; then
+	echo "GITHUB_USERNAME and GITHUB_PASSWORD are required"
+	exit 1
+fi
+
+USER=${USER:-$(whoami)}
+
+function prepareBranches() {
+	BASE=$1
+	HEAD=$2
+	git checkout $BASE
+	git reset HEAD
+	git checkout .
+	git fetch
+	git merge origin/${BASE}
+	git checkout -b ${HEAD}
+}
+
+function setSupervisorTag() {
+	sed -i "s/SUPERVISOR_TAG ?= \".*\"/SUPERVISOR_TAG ?= \"${TAG}\"/" meta-resin-common/recipes-containers/docker-disk/docker-resin-supervisor-disk.bb
+}
+
+function commitAndPR() {
+	BASE=$1
+	HEAD=$2
+	git commit -as -m "
+docker-resin-supervisor-disk: Update to ${TAG}
+
+Changelog-Entry: Update supervisor to ${TAG}
+Change-Type: patch
+" <<EOF
+${GITHUB_USERNAME}
+${GITHUB_PASSWORD}
+EOF
+
+	git push origin $HEAD
+	hub pull-request -b ${BASE} -m "${BASE}: Update supervisor to ${TAG}
+
+Change-Type: patch
+" <<EOF
+${GITHUB_USERNAME}
+${GITHUB_PASSWORD}
+EOF
+
+}
+
+if [ ! -d "./meta-resin" ]; then
+	echo "Cloning meta-resin..."
+	git clone https://github.com/resin-os/meta-resin.git
+else
+	echo "Using available meta-resin repo"
+fi
+cd meta-resin
+
+echo "Creating pull request to add supervisor ${TAG} on master"
+prepareBranches master supervisor-${TAG}
+setSupervisorTag
+commitAndPR master supervisor-${TAG}
+
+if [ "$PR_1X" = "true" ]; then
+	echo "Creating pull request to add supervisor ${TAG} on 1.X"
+	prepareBranches 1.X 1.X-supervisor-${TAG}
+	setSupervisorTag	
+	commitAndPR 1.X 1.X-supervisor-${TAG}
+fi