snpaas

#!/usr/bin/env bash
#
# https://github.com/springernature/ee-snpaas-cli
#
# SNPaaS client. This docker image has some scripts inside
# to deal with EE deployments structure. But you can use
# this docker image just to execute bosh, credhub, terraform
# Env vars are loaded automatically and you can run those
# commands directly, e.g.:
# 
#   snpaas credhub find -p '/director-name/'
#
# All docker images are versioned. So you can point to local images
# or previous versions by defining DOCKER_IMAGE env var, like:
#
#    DOCKER_IMAGE=snpaas-tools EPHEMERAL_HOME=1 snpaas create-env live-bosh-env
#
# EPHEMERAL_HOME env var forces non mounting of the user home, so
# all resources bosh-cli uses/downloads will be gone with the container.
#
# Docker image with all the binaries
DOCKER_IMAGE="${DOCKER_IMAGE:-eu.gcr.io/halfpipe-io/engineering-enablement/snpaas-tools:master}"
DOCKER_CMD_ARGS="--rm"
PREPARE_SCRIPT="prepare.sh"

# If these environment variables are defined in the environment, they will be exported automatically to the container
BOSH_ENVVARS="BOSH_CLIENT BOSH_CLIENT_SECRET BOSH_ENVIRONMENT BOSH_CA_CERT"
CREDHUB_ENVVARS="CREDHUB_SERVER CREDHUB_CLIENT CREDHUB_SECRET CREDHUB_CA_CERT"
CF_ENVVARS="CF_API CF_USER CF_PASSWORD CF_ORG CF_SPACE"
GCP_ENVVARS="GCP_PROJECT GCP_ZONE GCP_REGION"
SYSTEM_ENVVARS="USER GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_SSH_COMMAND"
# Force to not mound /home/user
EPHEMERAL_HOME="${EPHEMERAL_HOME:-0}"
TTY="${TTY--t}"

# You can define extra envvars to pass to the container just with this env var
EXTRA_ENVVARS="${EXTRA_ENVVARS:-}"
# export GIT_SSH_COMMAND=${GIT_SSH_COMMAND:-"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no"}

###

if BASE_FOLDER="$(git rev-parse --show-toplevel 2>/dev/null)"
then
  # If the command is being executed in a git repo, the volume will be the entire
  # git repo, and the workdir will be set to the current path
  current_path="$(pwd)"
  relative_path="${current_path#"$BASE_FOLDER"}"
  DOCKER_CMD_ARGS="${DOCKER_CMD_ARGS} --workdir /data${relative_path}"
  # If there is a prepare.sh script in the base folder of the repo, execute it
  if [ -x "${BASE_FOLDER}/${PREPARE_SCRIPT}" ]
  then
      (
          cd ${BASE_FOLDER}
          # . .envrc
          ./${PREPARE_SCRIPT} 2>&1 | awk '{ print "# "$0}'
          exit ${PIPESTATUS[0]}
      ) &
      wait $!
      rvalue=$?
      [ "${rvalue}" == "0" ] || exit ${rvalue}
  fi
else
  # If this is not a git repo, just import the current path as volume
  BASE_FOLDER="$(pwd)"
fi

if [ "x${EPHEMERAL_HOME}" == "x0" ]
then
  case "$(uname -s)" in
    Linux*)
        DOCKER_CMD_ARGS="${DOCKER_CMD_ARGS} --user $(id -u):$(id -g)"
        DOCKER_CMD_ARGS="${DOCKER_CMD_ARGS} -v ${HOME}:/home/${USER}"
      ;;
    Darwin*)
        DOCKER_CMD_ARGS="${DOCKER_CMD_ARGS} --user snpaas"
        # Mac OSX, not mounting /Users because of bugs, no caching for create-env commands!
      ;;
    *)
        echo "# Unknown OS, not mounting home, no user mapping, no caching for create-env commands!"
      ;;
  esac
fi

if [ -n "${SSH_AUTH_SOCK}" ] && [[ "$(uname -s)" == Linux* ]]
then
  # SSH agent socket in order to get working with github
  # THIS ONLY WORKS ON LINUX
  DOCKER_CMD_ARGS="${DOCKER_CMD_ARGS} -v $(realpath ${SSH_AUTH_SOCK}):/ssh-agent --env SSH_AUTH_SOCK=/ssh-agent"
fi

if [ -x "$(command -v docker)" ]
then
  docker pull "${DOCKER_IMAGE}" 2>&1 | awk '{ print "# "$0}' || true
  echo "#"
  for var in ${BOSH_ENVVARS} ${CREDHUB_ENVVARS} ${CREDHUB_ENVVARS} ${CF_ENVVARS} ${SYSTEM_ENVVARS} ${EXTRA_ENVVARS}
  do
    [ -z "${var}" ] || DOCKER_CMD_ARGS="--env ${var} ${DOCKER_CMD_ARGS}"
  done
  exec docker run ${DOCKER_CMD_ARGS} -v ${BASE_FOLDER}:/data -i ${TTY} "${DOCKER_IMAGE}" "${@}"
else
  echo "Loading .envrc variables ..."
  . .envrc
  # exec ${CMD}
  echo "Please install docker in order to use this program!, otherwise you can try to use the clients with the environment variables defined. "
  exit 1
fi