Class: EY::ChefRecipes

Inherits:
Object
  • Object
show all
Defined in:
lib/ey.rb

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ ChefRecipes

Returns a new instance of ChefRecipes.

Raises:

  • (ArgumentError) 


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# File 'lib/ey.rb', line 18

def initialize(opts={})
  raise ArgumentError.new("must provide environment name") unless opts[:env] or opts[:command] == :get_envs
  @opts = opts
  @eyenv = opts[:eyenv] || 'production'
  @env = opts[:env]
  @recipeloc = opts[:recipeloc] || "/etc/chef-custom/recipes"
  @rest = RestClient::Resource.new(opts[:api])
  @keys = {:aws_secret_id => @opts[:aws_secret_id], :aws_secret_key => @opts[:aws_secret_key]}
  @bucket = BucketMinder.new(@opts)
  unless get_envs[@env] or opts[:command] == :get_envs
    puts %Q{#{@env} is not a valid environment name, your available environments are:\n#{get_envs.keys.join("\n")}}
    exit 1
  end  
end

Instance Method Details

#call_api(path, opts = {}) ⇒ Object 



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# File 'lib/ey.rb', line 33

def call_api(path, opts={})
  JSON.parse(@rest["/api/#{path}"].post(@keys.merge(opts)))
rescue RestClient::RequestFailed
  puts "API call to Engine Yard failed. Are there any running instances for #{@env}"
  exit 1
end

#cleanup ⇒ Object 



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# File 'lib/ey.rb', line 232

def cleanup
  @bucket.cleanup
end

#clear_bucket ⇒ Object 



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# File 'lib/ey.rb', line 256

def clear_bucket
  @bucket.clear_bucket
end

#converge ⇒ Object 



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# File 'lib/ey.rb', line 51

def converge
  require 'chef'
  require 'chef/client'
  FileUtils.mkdir_p @recipeloc
  logtype = nil
  build_problem = false
  out = log_to_string do
    begin
      instance_id = open("http://169.254.169.254/latest/meta-data/instance-id").gets
      defaults = {
        :log_level => :info,
        :solo => true,
        :cookbook_path => "#{@recipeloc}/cookbooks",
        :file_store_path => "#{@recipeloc}/",
        :file_cache_path => "#{@recipeloc}/",
        :node_name => instance_id
      }
      Chef::Config.configure { |c| c.merge!(defaults) }
      Chef::Log::Formatter.show_time = false
      Chef::Log.level(Chef::Config[:log_level])
      
      if File.exist?("#{@recipeloc}/cookbooks")
        FileUtils.rm_rf("#{@recipeloc}/cookbooks")
      end
      
      if @opts[:main]
        logtype = "main.logs"
        install_main_recipes
      else
        logtype = "logs"
        install_recipes
      end
      json = get_json(instance_id)
      File.open("/etc/chef/dna.json", 'w'){|f| f.puts JSON.pretty_generate(json)}
      c = Chef::Client.new
      c.json_attribs = json
      c.run_solo
    rescue Object => e
      build_problem = true
      Chef::Log.error(describe_error(e))
    end  
  end
  file = "/tmp/chef-#{rand(1000)}.log"
  File.open(file, 'w'){ |f| f.write out }
  
  @bucket = BucketMinder.new(@opts.merge(:type => logtype, :extension => 'gz'))
  upload_logs(file)
  @bucket.cleanup
  FileUtils.rm(file)
  exit 1 if build_problem
end

#deploy ⇒ Object 



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# File 'lib/ey.rb', line 118

def deploy
  unless File.exist?("cookbooks")
    puts "you must run this command from the root of your chef recipe git repo"
    exit 1
  end
  env = get_envs[@env]
  unless env['instances'] > 0
    puts "There are no running instances for ENV: #{@env}"
    exit 1
  end
  if upload_recipes
    if env
      puts "deploying recipes..."
      if call_api("deploy_recipes", :id => env['id'] )[0] == 'working'
        wait_for_logs('logs')
      else
        puts "deploying main recipes failed..."
      end
    else
      puts "No matching environments"
    end  
  else
    puts "Failed to deploy: #{@env}"
  end  
end

#deploy_main ⇒ Object 



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# File 'lib/ey.rb', line 174

def deploy_main
  env = get_envs[@env]
  if env
    unless env['instances'] > 0
      puts "There are no running instances for ENV: #{@env}"
      exit 1
    end
    puts "deploying main EY recipes..."
    if call_api("deploy_main_recipes", :id => env['id'] )[0] == 'working'
      wait_for_logs('main.logs')
    else
      puts "deploying main recipes failed..."
    end  
  else
    puts "No matching environments"
  end  
end

#describe_error(e) ⇒ Object 



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# File 'lib/ey.rb', line 260

def describe_error(e)
  "#{e.class.name}: #{e.message}\n #{e.backtrace.join("\n  ")}"
end

#display_logs(obj) ⇒ Object 



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# File 'lib/ey.rb', line 192

def display_logs(obj)
  if obj
    Zlib::GzipReader.new(StringIO.new(obj.value, 'rb')).read
  else
    "no logs..."
  end
end

#download(*args) ⇒ Object 



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# File 'lib/ey.rb', line 240

def download(*args)
  @bucket.download(*args)
end

#get_current ⇒ Object 



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# File 'lib/ey.rb', line 252

def get_current
  @bucket.get_current
end

#get_envs ⇒ Object 



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# File 'lib/ey.rb', line 40

def get_envs
  @_envs ||= call_api("environments")
end

#get_json(instance_id = nil) ⇒ Object 



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# File 'lib/ey.rb', line 44

def get_json(instance_id = nil)
  env = get_envs[@env]
  call_api("json_for_instance", :id => env['id'], :instance_id => instance_id)
rescue
  {}  
end

#install_main_recipes ⇒ Object 



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# File 'lib/ey.rb', line 103

def install_main_recipes
  unless @opts[:main_recipes]
    puts "you must specify :main_recipes: in your ey-cloud.yml"
    exit 1
  end  
  recipes_path = Chef::Config[:cookbook_path].gsub(/cookbooks/, '')
  FileUtils.mkdir_p recipes_path
  path = File.join(recipes_path, 'recipes.tgz')
  File.open(path, 'wb') do |f|
    f.write open(@opts[:main_recipes]).read
  end
  system("cd #{recipes_path} && tar xzf #{path}")
  FileUtils.rm path
end

#install_recipes ⇒ Object 



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# File 'lib/ey.rb', line 244

def install_recipes
  file = get_current
  Dir.chdir(@recipeloc) {
    system("tar xzf #{file}")
  }
  FileUtils.rm file
end

#list(*args) ⇒ Object 



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# File 'lib/ey.rb', line 236

def list(*args)
  @bucket.list(*args)
end

#log_to_string(&block) ⇒ Object 



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# File 'lib/ey.rb', line 264

def log_to_string(&block)
  output = StringIO.new
  Chef::Log.init(output)
  block.call
  output.string
end

#rollback ⇒ Object 



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# File 'lib/ey.rb', line 144

def rollback
  @bucket.rollback
  env = get_envs[@env]
  if env
    puts "rolling back recipes..."
    call_api("deploy_recipes", :id => env['id'] )
    wait_for_logs('logs')
  else
    puts "No matching environments for #{@env}"
  end
end

#upload_logs(file) ⇒ Object 



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# File 'lib/ey.rb', line 219

def upload_logs(file)
  name = "#{file}.#{rand(1000)}.tgz"
  tarcmd = "cat #{file} | gzip > #{name}"
  if system(tarcmd)
    @bucket.upload_object(name)
    @bucket.cleanup
    true
  else
    puts "Unable to tar up log files for #{@opts[:env]} wtf?"
    false
  end    
end

#upload_recipes ⇒ Object 



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# File 'lib/ey.rb', line 206

def upload_recipes
  file = "recipes.#{rand(1000)}.tmp.tgz"
  tarcmd = "git archive --format=tar HEAD | gzip > #{file}"
  if system(tarcmd)
    @bucket.upload_object(file)
    @bucket.cleanup
    true
  else
    puts "Unable to tar up recipes for #{@opts[:env]} wtf?"
    false
  end
end

#view_logs ⇒ Object 



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# File 'lib/ey.rb', line 200

def view_logs
  logtype = "#{@opts[:main] ? 'main.' : ''}logs"
  logbucket = BucketMinder.new(@opts.merge(:type => logtype, :extension => 'gz'))
  puts display_logs(logbucket.list.last)
end

#wait_for_logs(logtype) ⇒ Object 



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# File 'lib/ey.rb', line 156

def wait_for_logs(logtype)
  logbucket = BucketMinder.new(@opts.merge(:type => logtype, :extension => 'gz'))
  newest = logbucket.list.last
  count = 0
  until newest != logbucket.list.last
    print "."
    sleep 3
    count += 1
    if count > 600
      puts "timed out waiting for deployed logs"
      exit 1
    end  
  end
  puts
  puts "retrieving logs..."
  puts display_logs(logbucket.list.last)
end