danmayer/ec2_manager.rb

## ec2_manager.rb
require 'sinatra'

EC2_HOME = '~/.ec2'

use Rack::Auth::Basic do |username, password|
  [username, password] == ['some_user', 'some_pass']
end

get "/" do
  @links = %w{describe_ec2s restart_all_ec2s shutdown_all_ec2s}.map { |cmd|
    cmd_link(cmd)
  }.join
  erb :index
end

get "/describe_ec2s" do
  results = `cd #{EC2_HOME}; ec2-describe-instances`
  instances = results.scan(/INSTANCE\ti-\w*/).each{|i| i.sub!("INSTANCE\t",'')}
  @links = instances.map { |i|
    instance_link(i)
  }.join
  erb :index
end

get "/restart_all_ec2s" do
  @results = `cd #{EC2_HOME}; ec2-describe-instances`
  instances = @results.scan(/INSTANCE\ti-\w*/).each{|i| i.sub!("INSTANCE\t",'')}
  cmd="cd #{EC2_HOME}; ec2-reboot-instances #{instances.join(' ')}"
  @results = `cmd`
  erb :index
end

get "/shutdown_all_ec2s" do
  @results = `cd #{EC2_HOME}; ec2-describe-instances`
  instances = @results.scan(/INSTANCE\ti-\w*/).each{|i| i.sub!("INSTANCE\t",'')}
  cmd="cd #{EC2_HOME}; ec2-terminate-instances #{instances.join(' ')}"
  @results = `cmd`
  erb :index
end

get "/instance/:id" do
  id = params[:id] if params[:id]
  verify_id(id)
  @results = `cd #{EC2_HOME}; ec2-describe-instances #{id}`
  @links = "<li><a href='/shutdown/#{id}' target='_self'>shutdown #{id}</a></li>"
  @links += " <li><a href='/reboot/#{id}' target='_self'>reboot #{id}</a></li>"
  erb :index
end

get "/reboot/:id" do
  id = params[:id] if params[:id]
  verify_id(id)
  @results = `cd #{EC2_HOME}; ec2-reboot-instances #{id}`
  erb :index
end

get "/shutdown/:id" do
  id = params[:id] if params[:id]
  verify_id(id)
  @results = `cd #{EC2_HOME}; ec2-terminate-instances #{id}`
  erb :index
end

helpers do

  def cmd_link(cmd)
    "<li><a href='#{cmd}' target='_self'>#{cmd}</a></li>"
  end

  def instance_link(instance)
    "<li><a href='/instance/#{instance}' target='_self'>#{instance}</a></li>"
  end

  def verify_id(id)
    raise Sinatra::ServerError, 'bad-id, What you doin?' unless id.match(/i-\w*/)
  end

end

use_in_file_templates!

__END__

@@ index
<html>
<head>
<meta name="viewport" content="width=320; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
<style type="text/css" media="screen">@import "/stylesheets/iui.css";</style>
<script type="application/x-javascript" src="/javascripts/iui.js"></script>
</head>

<body>
<div class="toolbar">
<h1 id="pageTitle"></h1>
</div>

<% if(@links) %>
<ul id="home" title="ec2 cmds" selected="true">
<li><a href='/' target='_self'>home</a></li>
<%= @links %>
<% unless(@results) %>
</ul>
<% end %>
<% end %>

<% if(@results) %>
<% if(@links) %>
<li><strong>results</strong></li>
<% else %>
<ul id="home" title="results" selected="true">
<li><a href='/' target='_self'>home</a></li>
<% end %>
<%= @results.gsub("\n","<br/>") %>
</ul>
<% end %>

</body>

</html>
	require 'sinatra'

	EC2_HOME = '~/.ec2'

	use Rack::Auth::Basic do \|username, password\|
	[username, password] == ['some_user', 'some_pass']
	end

	get "/" do
	@links = %w{describe_ec2s restart_all_ec2s shutdown_all_ec2s}.map { \|cmd\|
	cmd_link(cmd)
	}.join
	erb :index
	end

	get "/describe_ec2s" do
	results = `cd #{EC2_HOME}; ec2-describe-instances`
	instances = results.scan(/INSTANCE\ti-\w*/).each{\|i\| i.sub!("INSTANCE\t",'')}
	@links = instances.map { \|i\|
	instance_link(i)
	}.join
	erb :index
	end

	get "/restart_all_ec2s" do
	@results = `cd #{EC2_HOME}; ec2-describe-instances`
	instances = @results.scan(/INSTANCE\ti-\w*/).each{\|i\| i.sub!("INSTANCE\t",'')}
	cmd="cd #{EC2_HOME}; ec2-reboot-instances #{instances.join(' ')}"
	@results = `cmd`
	erb :index
	end

	get "/shutdown_all_ec2s" do
	@results = `cd #{EC2_HOME}; ec2-describe-instances`
	instances = @results.scan(/INSTANCE\ti-\w*/).each{\|i\| i.sub!("INSTANCE\t",'')}
	cmd="cd #{EC2_HOME}; ec2-terminate-instances #{instances.join(' ')}"
	@results = `cmd`
	erb :index
	end

	get "/instance/:id" do
	id = params[:id] if params[:id]
	verify_id(id)
	@results = `cd #{EC2_HOME}; ec2-describe-instances #{id}`
	@links = "<li><a href='/shutdown/#{id}' target='_self'>shutdown #{id}</a></li>"
	@links += " <li><a href='/reboot/#{id}' target='_self'>reboot #{id}</a></li>"
	erb :index
	end

	get "/reboot/:id" do
	id = params[:id] if params[:id]
	verify_id(id)
	@results = `cd #{EC2_HOME}; ec2-reboot-instances #{id}`
	erb :index
	end

	get "/shutdown/:id" do
	id = params[:id] if params[:id]
	verify_id(id)
	@results = `cd #{EC2_HOME}; ec2-terminate-instances #{id}`
	erb :index
	end

	helpers do

	def cmd_link(cmd)
	"<li><a href='#{cmd}' target='_self'>#{cmd}</a></li>"
	end

	def instance_link(instance)
	"<li><a href='/instance/#{instance}' target='_self'>#{instance}</a></li>"
	end

	def verify_id(id)
	raise Sinatra::ServerError, 'bad-id, What you doin?' unless id.match(/i-\w*/)
	end

	end

	use_in_file_templates!

	__END__

	@@ index
	<html>
	<head>
	<meta name="viewport" content="width=320; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
	<style type="text/css" media="screen">@import "/stylesheets/iui.css";</style>
	<script type="application/x-javascript" src="/javascripts/iui.js"></script>
	</head>

	<body>
	<div class="toolbar">
	<h1 id="pageTitle"></h1>
	</div>

	<% if(@links) %>
	<ul id="home" title="ec2 cmds" selected="true">
	<li><a href='/' target='_self'>home</a></li>
	<%= @links %>
	<% unless(@results) %>
	</ul>
	<% end %>
	<% end %>

	<% if(@results) %>
	<% if(@links) %>
	<li><strong>results</strong></li>
	<% else %>
	<ul id="home" title="results" selected="true">
	<li><a href='/' target='_self'>home</a></li>
	<% end %>
	<%= @results.gsub("\n","<br/>") %>
	</ul>
	<% end %>

	</body>

	</html>