shrub/sh/test-arvo-upgrade-path

#!/usr/bin/env bash

usage() {
    local error="$1"

    cat >&2 <<EOF
Usage:
  $0 FROM_REVISION TO_REVISION

Synopsis:
  Test an Arvo OTA update on a fake ship.

Example:
  $0 arvo.2019.11.6 arvo.2019.11.8

Error:
  -> $error
EOF

    exit 1
}

args="$@"

if [[ -z "$args" ]]; then
    usage "No arguments specified."
fi

FROM=$1
TO=$2

SHIP="zod"
START=$(git rev-parse HEAD)

cleanup () {
  if [ -e ./$PIER/.vere.lock ]
  then kill $(< ./$PIER/.vere.lock) || true;
  fi
}

trap cleanup EXIT

boot_ship() {
  ship=$1
  rev=$2

  git checkout $rev
  urbit -d -F $ship -B bin/brass.pill
}

mount_home() {
  pier=$1

  herb ./$pier -p hood -d "+hood/mount /=home="
}

update_arvo() {
  pier=$1
  rev=$2

  git checkout $rev
  rsync -zr --delete ./pkg/arvo/ ./$pier/home
  herb ./$pier -p hood -d "+hood/commit %home"
}

boot_ship $SHIP $FROM
mount_home $SHIP
update_arvo $SHIP $TO

cleanup

git checkout $START