webcompilers.erb

#!upstart
description 'start <%= @compiler %>'

## start job defined in this file after system services, and processes have
#  already loaded (to prevent conflict).
#
#  @vagrant-mounted, an event that executes after the shared folder is mounted
#  @[2345], represents all configuration states with general linux, and
#      networking access.
start on (vagrant-mounted and runlevel [2345])

## stop upstart job
stop on runlevel [!2345]

## restart upstart job continuously
respawn

## variables: 'setuid', 'setgid', are both used within the pre-stop stanza
#
#  @setuid, required for permission to write to '/vagrant/' files
#  @setgid, required for permission to write to '/vagrant/' files
#  @DATE, preformatted string for datetime.
setuid vagrant
setgid vagrant
env DATE='date +%Y-%m-%d:%H:%M:%S'

## run upstart job as a background process
expect fork

## start upstart job
#
#  @chdir, change the current working directory
chdir <%= @compiler_dir %>
exec ./<%= @compiler %>

## log start-up date
pre-start script
    echo "$DATE <%= @compiler %> service watcher starting" >> /vagrant/log/webcompiler/<%= @compiler %>.log 
end script

## log shut-down date, remove process id from log before '/vagrant' is unmounted
pre-stop script
    echo "$DATE <%= @compiler %> watcher stopping" >> /vagrant/log/webcompiler/<%= @compiler %>.log
end script