xdr-terraform-live/bin/apply_last_updated_modules

#! /bin/bash
# 
# Runs an init and apply in all copies of a module
#
# TODO: Would be really nice if this did some input validation, and if you
# could specify 'local' or not.


# Grab a list of the terragrunt.hcls that were updated in the last git commit,
# but ignore the root terragrunt.hcl, and strip terragrunt.hcl from the end.
UPDATED_MODULES=$( git diff --name-only HEAD HEAD~1 | grep terragrunt.hcl | egrep -v "^terragrunt.hcl" | sed "s#/terragrunt.hcl##" | sort -r )

PWD=`pwd`
BN=`basename $PWD`
if [[ $BN != "xdr-terraform-live" ]]; then
  echo Must be run from xdr-terraform-live root.
  exit 1
fi

echo The following modules will be applied:
for m in ${UPDATED_MODULES}; do
  printf '\t%s\n' $m
done
echo ""

read -p "Continue [Y/n]? " -n 1 -r
echo ""
if [[ $REPLY =~ ^[Nn]$ ]]; then
  echo Exiting....
  exit 1
fi

for m in ${UPDATED_MODULES}; do
  echo ""
  echo =============================================
  echo \ Applying $m
  echo =============================================
  pushd $m
  terragrunt init --upgrade && terragrunt apply
  EXITCODE=$?
  if [[ $EXITCODE != 0 ]]; then
    # Prompt to continue after each failed module.
    read -p "Terragrunt completed unsuccessfully. Continue to next module [Y/n]? " -n 1 -r
    echo ""
    if [[ $REPLY =~ ^[Nn]$ ]]
    then
        echo Exiting...
        exit 2
    fi
  fi
  popd
done