Deployment script

deploy.sh

#!/usr/bin/env bash

# Configuration
SERVER='myserver'
DEPLOY_TO='/path/to/app'
EXCLUDE='*.swp .git/ db/sphinx/ tmp/ log/'
DRY_RUN=false
DEPLOY_GEM_PATH='/opt/ec/ruby/1.8.7/lib/ruby/gems/1.8'

# To improve ssh performance, consider reusing connections:
#
# Host *
#   ControlMaster auto
#   ControlPath /tmp/%r@%h:%p

# Map the excluded files to rsync's options
function excludes {
  EXCLUDES=''
  for i in $(echo $EXCLUDE | tr " " "\n")
  do
    EXCLUDES="$EXCLUDES --exclude $i"
  done
}

# Run rsync
function upload_files {
  excludes

  CMD="rsync -avz $EXCLUDES"
  if $DRY_RUN ; then
    CMD="$CMD --dry-run"
  fi

  CMD="$CMD ./ $SERVER:$DEPLOY_TO"
  echo $CMD
  $CMD
}

# run the Rails migrations
function migrate {
  ssh $SERVER "cd $DEPLOY_TO && RAILS_ENV=production rake db:migrate"
}

# Restart the web processes, easy with passenger
function restart_web_processes {
  ssh $SERVER "cd $DEPLOY_TO && touch tmp/restart.txt"
}

# Run bundler, there's an extra option here for my server's environment
function bundler {
  # chgrp -R deploy /opt/ec/ruby/1.8.7/lib/ruby/gems/1.8
  # chmod g+w -R  /opt/ec/ruby/1.8.7/lib/ruby/gems/1.8
  ssh $SERVER "cd $DEPLOY_TO && GEM_PATH=$DEPLOY_GEM_PATH RAILS_ENV=production CXX=/usr/sfw/bin/g++ bundle install"
}

# Copy the app's settings files for this environment
function copy_settings {
  # Remove the old ones
  ssh $SERVER "rm $DEPLOY_TO/config/settings.yml"
  ssh $SERVER "rm $DEPLOY_TO/config/database.yml"
  ssh $SERVER "rm $DEPLOY_TO/config/sphinx.yml"

  # Copy
  ssh $SERVER "cp $DEPLOY_TO/config/environments/settings/test.yml $DEPLOY_TO/config/settings.yml"
  ssh $SERVER "cp $DEPLOY_TO/config/environments/settings/test_database.yml $DEPLOY_TO/config/database.yml"
  ssh $SERVER "cp $DEPLOY_TO/config/environments/settings/test_sphinx.yml $DEPLOY_TO/config/sphinx.yml"
}

function locales {
  ssh $SERVER "cd $DEPLOY_TO && RAILS_ENV=production rake tolk:dump_all"
}

# Reusable:
function restart_sphinx {
  ssh $SERVER "cd $DEPLOY_TO && RAILS_ENV=production rake ts:restart"
}

# Run deployment
upload_files

if ! $DRY_RUN ; then
  copy_settings
  bundler
  migrate
  restart_sphinx
  locales
  restart_web_processes
fi