diff_sentinel.sh

#!/usr/bin/env bash

FILE="$1"

if [[ -z $FILE ]]; then
  echo "$0 run-XXX.mocks.tar.gz"
  exit 1
fi

if command -v colordiff >/dev/null; then
  diff=colordiff
elif diff --version | grep -qs GNU; then
  diff="diff --color=always"
else
  diff="diff"
fi

dir=mocks.$$
mkdir -p $dir
trap "rm -rf $dir" EXIT
tar zxf "$FILE" -C $dir

sentinel2json () {
  sed '1,2d; /module = func(path)/,$d' $dir/mock-tfplan.sentinel | hcl2json
}

for key in $(sentinel2json | jq '.. | select(.debug? != null) | .debug["0"].diff | to_entries[] | .key' -r | grep '^triggers\.' | sort -u); do
  output=$($diff -u \
    <(sentinel2json | jq '.. | select(.["'"$key"'"]? != null) | .["'"$key"'"].old' -r) \
    <(sentinel2json | jq '.. | select(.["'"$key"'"]? != null) | .["'"$key"'"].new' -r)
  )
  if [[ -n $output ]]; then
    echo "diff a/$key b/$key"
    echo "$output"
  fi
done