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## Description
This cookbook is designed to be able to describe and deploy Node.js web applications using Upstart.
Note that this cookbook provides the Node-specific bindings for the `application` cookbook; you will find general documentation in that cookbook.
## Requirements
Chef 0.10.0 or higher required (for Chef environment use).
Upstart 1.4 or higher for the use of `setuid` in the default Upstart configuration template.
This requirement can be worked around by specifying a custom template.
The following Opscode cookbooks are dependencies:
* [application](https://github.com/opscode-cookbooks/application)
* [nodejs](https://github.com/mdxp/nodejs-cookbook)
## Resources/Providers
The `nodejs` sub-resource LWRP deals with deploying Node.js applications using Upstart. It is not meant to be used by itself; make sure you are familiar with the `application` cookbook before proceeding.
### Attribute Parameters
- **npm**: If `true`, `npm` will be used to install the dependencies specified in `packages.json`. Defaults to `true`.
- **template**: The name of the template that will be used to create the Upstart configuration file. If specified, it will be looked up in the application cookbook. Defaults to `nodejs.upstart.conf.erb` from this cookbook.
- **entry_point**: The argument to pass to node. Defaults to `app.js`.
## Usage
Here is an example hello world application using [Express](http://expressjs.com):
```
application "hello-world" do
path "/srv/node-hello-world"
owner "www-data"
group "www-data"
packages ["git"]
repository "git://github.com/visionmedia/express.git"
nodejs do
entry_point "examples/hello-world"
end
end
```
## License and Author
Author:: Conrad Kramer (<conrad@kramerapps.com>)
Copyright 2013, Kramer Software Productions, LLC.
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.

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name "application_nodejs"
maintainer "Conrad Kramer"
maintainer_email "conrad@kramerapps.com"
license "Apache 2.0"
description "Deploys and configures Node.js applications"
long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
version "2.0.1"
depends "nodejs"
depends "application"
supports 'ubuntu', ">= 12.04"

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#
# Author:: Conrad Kramer <conrad@kramerapps.com>
# Cookbook Name:: application_node
# Resource:: node
#
# Copyright:: 2013, Kramer Software Productions, LLC. <conrad@kramerapps.com>
#
# 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.
#
include Chef::DSL::IncludeRecipe
action :before_compile do
include_recipe 'nodejs::nodejs_from_package'
r = new_resource
if new_resource.npm
include_recipe 'nodejs::npm'
end
unless new_resource.restart_command
new_resource.restart_command do
service "#{r.application.name}_nodejs" do
if platform?('ubuntu') && node[:platform_version].to_f >= 14.04
provider Chef::Provider::Service::Systemd
else
provider Chef::Provider::Service::Upstart
end
supports :restart => true, :start => true, :stop => true
action [:enable, :restart]
end
end
end
new_resource.environment.update({
'NODE_ENV' => r.environment_name
})
end
action :before_deploy do
new_resource.environment['NODE_ENV'] = new_resource.environment_name
r = new_resource
service "#{r.application.name}_nodejs" do
if platform?('ubuntu') && node[:platform_version].to_f >= 14.04
provider Chef::Provider::Service::Systemd
else
provider Chef::Provider::Service::Upstart
end
end
if platform?('ubuntu') && node[:platform_version].to_f >= 14.04
execute "systemctl daemon-reload" do
command "systemctl daemon-reload"
action :nothing
end
template "#{r.application.name}_nodejs.systemd.service.erb" do
path "/lib/systemd/system/#{r.application.name}_nodejs.service"
source r.template ? r.template : 'nodejs.systemd.service.erb'
cookbook r.template ? r.cookbook_name.to_s : 'application_nodejs'
owner 'root'
group 'root'
mode '0644'
variables(
:user => r.owner,
:group => r.group,
:app_dir => r.release_path,
:entry => r.entry_point,
:environment => r.environment
)
notifies :run, "execute[systemctl daemon-reload]", :delayed
notifies :restart, "service[#{r.application.name}_nodejs]", :delayed
end
else
template "#{new_resource.application.name}.upstart.conf" do
path "/etc/init/#{r.application.name}_nodejs.conf"
source r.template ? r.template : 'nodejs.upstart.conf.erb'
cookbook r.template ? r.cookbook_name.to_s : 'application_nodejs'
owner 'root'
group 'root'
mode '0644'
variables(
:user => r.owner,
:group => r.group,
:app_dir => r.release_path,
:entry => r.entry_point,
:environment => r.environment
)
notifies :restart, "service[#{r.application.name}_nodejs]", :delayed
end
end
end
action :before_migrate do
if new_resource.npm
execute 'npm install' do
cwd new_resource.release_path
user new_resource.owner
group new_resource.group
environment new_resource.environment.merge({ 'HOME' => new_resource.shared_path })
end
end
end
action :before_symlink do
end
action :before_restart do
end
action :after_restart do
end

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#
# Author:: Conrad Kramer <conrad@kramerapps.com>
# Cookbook Name:: application_node
# Resource:: node
#
# Copyright:: 2013, Kramer Software Productions, LLC. <conrad@kramerapps.com>
#
# 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.
#
include ApplicationCookbook::ResourceBase
attribute :npm, :kind_of => [NilClass, TrueClass, FalseClass], :default => true
attribute :template, :kind_of => [String, NilClass], :default => nil
attribute :entry_point, :kind_of => String, :default => 'app.js'

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[Service]
ExecStart=/usr/bin/env node <%= @entry %>
User=<%= @user %>
Group=<%= @group %>

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#!upstart
description "Node.js Application Server"
start on (local-filesystems and net-device-up IFACE!=lo)
stop on [!12345]
console log
<% @environment.each do |key, value| -%>
env <%= key %>="<%= value %>"
<% end -%>
<% unless @user.nil? -%>
setuid <%= @user %>
<% end -%>
<% unless @group.nil? -%>
setgid <%= @group %>
<% end -%>
chdir <%= @app_dir %>
exec /usr/bin/env node <%= @entry %>