add updater script

Author: rlex

bin/update-helper.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+# ugly-ass script to bump versions in Chart.yaml and regenerate docs
+# mostly for working with renovate-generated updates, since it can't update those values
+# maybe add it to PR pipeline?
+
+# assign vars from args
+chart=${1}
+patchlevel=${2}
+
+# exit on no args
+if [[ ${1} == "" && ${2} == "" ]];
+  then
+  echo "Usage: update-helper.sh chart_name patchlevel"
+  echo "patchlevel can be either major, minor or patch"
+  exit 0
+fi
+
+# ugly symlink so it works on both linux and OSX
+sedlink() {
+  if [[ "${OSTYPE}" == "linux-gnu"* ]]; then
+    sed "$@"
+  elif [[ "${OSTYPE}" == "darwin"* ]]; then
+    gsed "$@"
+  else
+    sed "$@"
+  fi
+}
+
+# function to work with semver, source:
+# https://github.com/fmahnke/shell-semver/blob/master/increment_version.sh
+semver_increment() {
+  case ${patchlevel} in
+    major ) major=true;;
+    minor ) minor=true;;
+    patch ) patch=true;;
+  esac
+
+  shift $(($OPTIND - 1))
+
+  version=$(grep "version:" charts/${chart}/Chart.yaml | awk {'print $2'})
+
+  # Build array from version string.
+
+  a=( ${version//./ } )
+
+  # Increment version numbers as requested.
+
+  if [ ! -z $major ]
+  then
+    ((a[0]++))
+    a[1]=0
+    a[2]=0
+  fi
+
+  if [ ! -z $minor ]
+  then
+    ((a[1]++))
+    a[2]=0
+  fi
+
+  if [ ! -z $patch ]
+  then
+    ((a[2]++))
+  fi
+
+  echo "${a[0]}.${a[1]}.${a[2]}"
+}
+
+#set to version we need
+target_version=$(semver_increment ${current_version} ${patchlevel})
+#patch it around
+sedlink -i "s/^version:.*$/version: ${target_version}/g" charts/${chart}/Chart.yaml
+#extract image version from values (multiple different images not supported)
+appversion=$(grep "tag:" charts/coroot/values.yaml | awk {'print $2'} | tr -d '"')
+#patch it around
+sedlink -i "s/^appVersion:.*$/appVersion: ${appversion}/g" charts/${chart}/Chart.yaml
+#regenerate docs
+helm-docs --chart-to-generate charts/${chart}
+#add to git staging
+git add charts/${chart}
+#commit
+git commit -m "[${chart}] bump to ${target_version}"