ohmybuck

Export SSM to shell

March 29, 2020

This gets any params set in AWS SSM and exports it to the running shell.

#!/bin/bash

VAR_ENV_FILE="$1"
VAR_SSM_PREFIX="$2"

# To use:
# . export-ssm-to-shell.sh <VAR_ENV_FILE> <SSM_PREFIX>

# EXAMPLE
#   . ./export-ssm-to-shell.sh .env.example /application/project/environment/

if [ -z "$VAR_ENV_FILE" ]; then
  echo "It appears you did not specify a file with the list of variables to fetch"
  echo ". ./export-ssm-to-shell.sh .env.example /application/project/environment/"

  exit 1
fi

if [ -z "$VAR_SSM_PREFIX" ]; then
  echo "It appears you did not specify an SSM prefix"
  echo ". ./export-ssm-to-shell.sh .env.example /application/project/environment/"

  exit 1
fi

LIST_ENV_VARS=$(grep -v '^#' "$VAR_ENV_FILE" | sed "s/=.*//" |
  xargs -I {} echo "$VAR_SSM_PREFIX{}" |
  tr '\n' ' ')

LIST_ENV_VAR_WITH_VALUES=$(aws ssm get-parameters --names $(echo "$LIST_ENV_VARS") |
  jq -r ".Parameters[] | (.Name + \"=\" + .Value)")

echo "\n[EXPORT STARTING]"

echo $LIST_ENV_VAR_WITH_VALUES | while read LINE_ENV_VAR; do
  CLEAN_ENV_VAR=$(echo "$LINE_ENV_VAR" |
    sed "s|$VAR_SSM_PREFIX||")

  export "$CLEAN_ENV_VAR"

  echo "[EXPORT SUCCESS]: $(echo $LINE_ENV_VAR | sed "s/=.*//")"
done

echo "\n[EXPORT COMPLETED]"

Written by Oliver Smit. I love talking about web technologies, good design practices, optimising productivity, and rapid prototyping of projects. Check out my work on Github