node app deploy script

deploy.sh

#!/bin/bash

set -e
set -o pipefail

########### USER CONFIGURABLE OPTS ################
REMOTE_ADDR=example.com
GIT_REMOTE=git@git.example.com:example/app.git
CACHE_DIR=tmp/.cache
###################################################

timestamp=$(date +%s)
app_dir=/home/deploy/main
releases_dir=${app_dir}/releases
dest_dir=${releases_dir}/${timestamp}
current_dir=${app_dir}/current

create_cache_maybe() {
  if [ ! -d "$CACHE_DIR" ]; then
    git clone $GIT_REMOTE $CACHE_DIR --quiet --depth=1 --no-single-branch
  fi
}

checkout() {
  cd $CACHE_DIR

  git fetch --quiet --all --prune --depth=1
  git checkout master --quiet
  git reset origin/master --hard
}

build() {
  yarn install
  yarn build:all
}

deploy() {
ssh deploy@${REMOTE_ADDR} /bin/bash << EOF
  mkdir -p ${releases_dir}
EOF

rsync --delete -avzh -e ssh ./dist/* deploy@${REMOTE_ADDR}:${dest_dir}

ssh deploy@${REMOTE_ADDR} /bin/bash << EOF
  if [ -d "$dest_dir" ]; then
    ln -nsf ${dest_dir} ${current_dir}

    # keep 5 latest releases, delete older ones
    cd ${releases_dir} && ls -X | head -n -5 | xargs -d '\n' rm -r --

    sudo systemctl restart app-main
  fi
EOF
}

create_cache_maybe
checkout
build
deploy

echo "Deploy finished!"