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#
# Cookbook Name:: application
# Recipe:: rails
#
# Copyright 2009-2011, Opscode, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
case node['platform']
when 'ubuntu','debian'
package 'libyaml-dev'
when 'redhat','centos'
package 'libyaml-devel'
end
include_recipe 'xml'
app = node.run_state[:current_app]
# Defaults
app['owner'] ||= app['user']
app['group'] ||= app['user']
app['shared_children'] ||= %w{ log pids system bundle }
app['database_master_role'] ||= []
# make the _default chef_environment look like the Rails production environment
rails_env = (node.chef_environment =~ /_default/ ? "production" : node.chef_environment)
node.run_state[:rails_env] = rails_env
###
# You really most likely don't want to run this recipe from here - let the
# default application recipe work it's mojo for you.
###
node.default[:apps][app['id']][node.chef_environment][:run_migrations] = false
## First, install any application specific packages
if app['packages']
app['packages'].each do |pkg,ver|
package pkg do
action :install
version ver if ver && ver.length > 0
end
end
end
## Next, install any application specific gems
if app['gems']
app['gems'].each do |gem,ver|
gem_package gem do
action :install
version ver if ver && ver.length > 0
end
end
end
# Create directories
directory app['deploy_to'] do
owner app['owner']
group app['group']
mode '0755'
recursive true
end
directory "#{app['deploy_to']}/shared" do
owner app['owner']
group app['group']
mode '0755'
recursive true
end
app['shared_children'].each do |dir|
directory "#{app['deploy_to']}/shared/#{dir}" do
owner app['owner']
group app['group']
mode '0755'
recursive true
end
end
# database.yml
hostname_from_data_bag = ((app['databases'] || {})[node.chef_environment] || {})['hostname']
if !app["database_master_role"].empty? || hostname_from_data_bag
dbm = nil
# If we are the database master
if node.run_list.roles.include?(app["database_master_role"][0])
dbm = node
elsif hostname_from_data_bag
# Do nothing
dbm = true
else
# Find the database master
results = search(:node, "roles:#{app["database_master_role"][0]} AND chef_environment:#{node.chef_environment}", nil, 0, 1)
rows = results[0]
if rows.length == 1
dbm = rows[0]
end
end
# Assuming we have one...
if dbm
template "#{app['deploy_to']}/shared/database.yml" do
source "database.yml.erb"
owner app["owner"]
group app["group"]
mode '0600'
variables(
:host => hostname_from_data_bag || (dbm.attribute?('cloud') ? dbm['cloud']['local_ipv4'] : dbm['ipaddress']),
:databases => app['databases'],
:rails_env => rails_env
)
end
else
Chef::Log.warn("No node with role #{app["database_master_role"][0]}, database.yml not rendered!")
end
end
# memcached.yml
if app["memcached_role"]
results = search(:node, "rolers:#{app["memcached_role"][0]} AND chef_environment:#{node.chef_environment} NOT hostname:#{node[:hostname]}")
if results.length == 0
if node.run_list.roles.include?(app["memcached_role"][0])
results << node
end
end
template "#{app['deploy_to']}/shared/memcached.yml" do
source "memcached.yml.erb"
owner app["owner"]
group app["group"]
mode '0600'
variables(
:memcached_envs => app['memcached'],
:hosts => results.sort_by { |r| r.name }
)
end
end
# stats.yml
if app['stats'] != false
app['stats'] ||= {}
app['stats'][node.chef_environment] ||= {}
app['stats_role'] ||= []
if app['stats_role'].empty? && app['stats'][node.chef_environment]['address'].nil?
warn "No stats role or address found. Not writing #{app['deploy_to']}/shared/stats.yml"
else
# Get the statsd attribute of the first stats server
stats_server = (search(:node, "roles:#{app['stats_role'][0]}")[0] || {})['statsd'] || {}
# Extend the data from the data bag with data returned from the search
app['stats'][node.chef_environment] = {
:app_id => app['id'],
:host => stats_server['address'],
:port => stats_server['port']
}.merge(app['stats'][node.chef_environment])
template "#{app['deploy_to']}/shared/stats.yml" do
owner app['owner']
group app['owner']
mode '0600'
source 'stats.yml.erb'
variables :stats => app['stats']
end
end
end
# Then, deploy
if app['deploy_with'] && app['deploy_with'] == 'chef'
if app.has_key?("deploy_key")
ruby_block "write_key" do
block do
f = ::File.open("#{app['deploy_to']}/id_deploy", "w")
f.print(app["deploy_key"])
f.close
end
not_if do ::File.exists?("#{app['deploy_to']}/id_deploy"); end
end
file "#{app['deploy_to']}/id_deploy" do
owner app['owner']
group app['group']
mode '0600'
end
template "#{app['deploy_to']}/deploy-ssh-wrapper" do
source "deploy-ssh-wrapper.erb"
owner app['owner']
group app['group']
mode "0755"
variables app.to_hash
end
end
deploy_revision app['id'] do
revision app['revision'][node.chef_environment]
repository app['repository']
user app['owner']
group app['group']
deploy_to app['deploy_to']
environment 'RAILS_ENV' => rails_env
action app['force'][node.chef_environment] ? :force_deploy : :deploy
ssh_wrapper "#{app['deploy_to']}/deploy-ssh-wrapper" if app['deploy_key']
shallow_clone true
before_migrate do
if app['gems'].has_key?('bundler')
link "#{release_path}/vendor/bundle" do
to "#{app['deploy_to']}/shared/vendor_bundle"
end
common_groups = %w{development test cucumber staging production}
execute "bundle install --deployment --without #{(common_groups -([node.chef_environment])).join(' ')}" do
ignore_failure true
cwd release_path
end
elsif app['gems'].has_key?('bundler08')
execute "gem bundle" do
ignore_failure true
cwd release_path
end
elsif node.chef_environment && app['databases'].has_key?(node.chef_environment)
# chef runs before_migrate, then symlink_before_migrate symlinks, then migrations,
# yet our before_migrate needs database.yml to exist (and must complete before
# migrations).
#
# maybe worth doing run_symlinks_before_migrate before before_migrate callbacks,
# or an add'l callback.
execute "(ln -s ../../../shared/database.yml config/database.yml && rake gems:install); rm config/database.yml" do
ignore_failure true
cwd release_path
end
end
end
symlink_before_migrate({
"database.yml" => "config/database.yml",
"memcached.yml" => "config/memcached.yml"
})
if app['migrate'][node.chef_environment] && node[:apps][app['id']][node.chef_environment][:run_migrations]
migrate true
migration_command app['migration_command'] || "rake db:migrate"
else
migrate false
end
before_symlink do
ruby_block "remove_run_migrations" do
block do
if node.role?("#{app['id']}_run_migrations")
Chef::Log.info("Migrations were run, removing role[#{app['id']}_run_migrations]")
node.run_list.remove("role[#{app['id']}_run_migrations]")
end
end
end
end
end
end
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