Mastodon(on Docker) Automatic Update Script

mastodonautoupdate.sh

#!/bin/bash

# =====================================================================
#            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
#                    Version 2, December 2004
#
# Copyright (C) 2004 Sam Hocevar <[email protected]>
#
# Everyone is permitted to copy and distribute verbatim or modified
# copies of this license document, and changing it is allowed as long
# as the name is changed.
#
#            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
#   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
#
#  0. You just DO WHAT THE FUCK YOU WANT TO.
# =====================================================================

# ***** HOU TO USE *****
# 1. In docker-compose.yml, change image row: "tootsuite/mastodon:vX.X.X" -> tootsuite/mastodon:${VERSION}
# 2. Make new ".env" file in your mastodon directory
# 3. Add description to .env file: VERSION=
# 4. Edit this file of "SET YOUR CONFIG"
# 5. Set cron (ex:) `0 3 * * * bash /home/ubuntu/mastodon_etc/mastodonautoupdate.sh >/dev/null 2>>/home/ubuntu/mastodon_etc/autoupdatelog.txt` 
# Do you need more information? see: https://gist.github.com/kunimi53chi/506a5598cec32f7c253d93dae650a449 (written in Japanese) 
# CONTACT: @[email protected] | https://keybase.io/kunimi_komichi

set -eu

# === SET YOUR CONFIG ===
readonly GIT_REPOSITORY='/home/user/mastodon/'
readonly DOMAIN='its.your.domain'
readonly LOGFILEPATH='/home/user/mastodon_etc/autoupdatelog.txt'
readonly ACCESS_TOKEN='' # you can get it from: your.domain/settings/applications

# =================
#    SUB ROUTINE
# =================
#

# attention toot for follower. Please change the statement that you want to toot.
function choiceToot () {
  # Result Report
  local readonly STATUS_SUCCESS='(Auto Toot) YEEEEAAAAAH. '"${DOMAIN}"' update, ALL IS DONE!!!'
  local readonly STATUS_DONOTHING='(Auto Toot) OK, There are not any TAG changes from the last update.'

  # Progress Report
  local readonly STATUS_START='(Auto Toot) Its time. Automatic Updates, lets start.'
  local readonly STATUS_GIT='(Auto Toot) Now is Git Operation...'
  local readonly STATUS_BUILD='(Auto Toot) Docker Build...'
  local readonly STATUS_DB_MIGRATE='(Auto Toot) db:migrate...'
  local readonly STATUS_ASSETS_PRECOMPILE='(Auto Toot) assets:precompile...'
  local readonly STATUS_UP='(Auto Toot) OK, Everyone is all here. Docker Up!'

  # $1=progress,
  case $1 in
    'start')
      post "$STATUS_START"
      logstart;;
    'git')
      post "$STATUS_GIT";;
    'build')
      post "$STATUS_BUILD";;
    'db:migrate')
      post "$STATUS_DB_MIGRATE";;
    'assets:precompile')
      post "$STATUS_ASSETS_PRECOMPILE";;
    'up')
      post "$STATUS_UP";;
    'success')
      post "$STATUS_SUCCESS"
      logend;;
    'donothing')
      post "$STATUS_DONOTHING"
      logend;;
    *)
      catch
  esac
}

function post () {
  local POST_STATUS=$1
  local API="https://${DOMAIN}/api/v1/statuses"

  curl -X POST -Ss ${API} \
  --header "Authorization: Bearer ${ACCESS_TOKEN}" \
  -d "status=${POST_STATUS}"
}

function logstart () {
  echo -e "`date +'%Y/%m/%d %H:%M:%S'` UPDATE START." >> $LOGFILEPATH
}

function logend () {
  echo -e "`date +'%Y/%m/%d %H:%M:%S'` ALL IS DONE." >> $LOGFILEPATH
}

function isDonAlive () {
  local DOMAIN_WITH_HTTPS="https://${DOMAIN}/"

  while true; do
    local DONALIVE=$(curl -s -o /dev/null -LI -w "%{http_code}\n" ${DOMAIN_WITH_HTTPS})
    if [ $DONALIVE -eq 200 ]; then
       break
    fi

    # retry
    sleep 5s
  done
}

function catch () {
  local readonly STATUS_FAILED='(Auto Toot) Oops! '"${DOMAIN}"' update FAILED. Im sorry for the inconvenience.'
  echo -e "`date +'%Y/%m/%d %H:%M:%S'` *****FAILED***** Failure Point is $2, line $1." >> $LOGFILEPATH
  post "$STATUS_FAILED"
}

trap 'catch $LINENO $BASH_COMMAND' ERR

# ==========================
#        MAIN ROUTINE
# ==========================
#

cd ${GIT_REPOSITORY}
choiceToot 'start'
choiceToot 'git'

# If "insufficient permission for adding an object to repository database .git/objects" error occured,
# do command  `$ sudo chmod -R 0777 .git/objects/` on your clone repository.
# see: https://blog.t5o.me/post/20121227/git-error-insufficient.html (written in Japanese)
# see also: https://stackoverflow.com/questions/6448242/git-push-error-insufficient-permission-for-adding-an-object-to-repository-datab
git fetch

# is update needed?
CURRENT='DEFAULT'
LATEST='DEFAULT'
CURRENT=$(git describe --tags)
LATEST=$(git describe --tags `git rev-list --tags --max-count=1`)

if [ ${CURRENT} = ${LATEST} ]; then
  choiceToot 'donothing'
  exit 0
fi

# ok, update mastodon to latest version.
git stash
git checkout ${LATEST}
git stash pop

ENV_PATH="${GIT_REPOSITORY}.env"
sudo sed -i -e "s/VERSION=.*/VERSION=${LATEST}/g" ${ENV_PATH}

choiceToot 'build'
sudo docker-compose build
choiceToot 'db:migrate'
sudo docker-compose run --rm web bundle exec rake db:migrate
choiceToot 'assets:precompile'
sudo docker-compose run --rm web bundle exec rake assets:precompile
choiceToot 'up'
sleep 10s # to intended toot before docker-compose up
sudo docker-compose up -d
isDonAlive
choiceToot 'success'