Class: Rig::Model::Environment

Inherits:
Object
  • Object
show all
Defined in:
lib/rig/model/environment.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, template = nil, opts = { }) ⇒ Environment

TODO: overall, need better handling for global config, template and local overrides



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# File 'lib/rig/model/environment.rb', line 47

def initialize(name, template=nil, opts={ })
  @options = {

  }.merge(opts)

  @name = name
  @template = Rig.get_template(template) unless template.nil?
  @template_name = template
  @servers       = []
  @dnsdelayed    = []
  @balancers     = []
end

Instance Attribute Details

#balancers ⇒ Object (readonly)

Returns the value of attribute balancers.



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# File 'lib/rig/model/environment.rb', line 5

def balancers
  @balancers
end

#flavor ⇒ Object (readonly)

Returns the value of attribute flavor.



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# File 'lib/rig/model/environment.rb', line 11

def flavor
  @flavor
end

#image ⇒ Object (readonly)

Returns the value of attribute image.



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# File 'lib/rig/model/environment.rb', line 9

def image
  @image
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rig/model/environment.rb', line 6

def name
  @name
end

#region ⇒ Object (readonly)

Returns the value of attribute region.



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# File 'lib/rig/model/environment.rb', line 10

def region
  @region
end

#servers ⇒ Object (readonly)

Returns the value of attribute servers.



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# File 'lib/rig/model/environment.rb', line 4

def servers
  @servers
end

#template ⇒ Object (readonly)

Returns the value of attribute template.



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# File 'lib/rig/model/environment.rb', line 7

def template
  @template
end

#template_name ⇒ Object (readonly)

Returns the value of attribute template_name.



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# File 'lib/rig/model/environment.rb', line 8

def template_name
  @template_name
end

Class Method Details

.create(name, template, opts = { }) ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 27

def create(name, template, opts={ })
  env = self.new(name, template, opts)
  env.save
  env
end

.destroy(name, template = nil, opts = { }) ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 33

def destroy(name, template=nil, opts={ })
  env = self.find(name, template, opts)
  raise "environment has protected instances" if env.protected?
  Rig::Log.info "destroying: #{name}"
  env.destroy
  true
rescue => e
  puts "exception: #{e.message}"
  puts e.backtrace.join("\n")
  false
end

.find(name, template = nil, opts = { }) ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 21

def find(name, template=nil, opts={ })
  env = self.new(name, template, opts)
  env.reload
  env
end

.list ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 14

def list
  filters = { }

  list = Rig::Connection.compute.servers.all(filters)
  list.inject([]) { |a, e| a << e.tags["Environment"] }.compact.uniq.sort
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 158

def destroy
  Rig::Log.info "removing all server dns entries"
  @servers.each do |server|
    #Rig::Model::Dns.destroy("#{server.tags['Name']}.#{Rig.get_config(:dns_zone)}") if server.tags['Name']
    Rig::Model::Dns.remove_instance(server.dns_name) if server.dns_name
  end
  Rig::Log.info "removing all environment dns entries"
  Rig::Model::Dns.remove_environment(@name)


  roles = @servers.collect { |s| s.tags['Role'] }.compact
  roles.each do |r|
    Rig::Log.info "removing role balancer dns (#{r})"
    Rig::Model::Dns.destroy("#{r}.#{name}.#{Rig.get_config(:dns_subdomain)}.#{Rig.get_config(:dns_zone)}")
  end

  Rig::Log.info "removing primary dns"
  Rig::Model::Dns.destroy("#{name}.#{Rig.get_config(:dns_subdomain)}.#{Rig.get_config(:dns_zone)}")

  Rig::Log.info "destroying servers"
  Rig::Model::Instance.destroy(@servers)

  Rig::Log.info "destroying balancers"
  Rig::Model::Balancer.destroy(@balancers)

  Rig::Plugin.run "environment:destroy", self
end

#protected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rig/model/environment.rb', line 192

def protected?
  @protected
end

#reload ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 186

def reload
  find_servers
  find_balancers
  @protected = @servers.any? { |s| s.tags["Protected"] == "true" }
end

#save ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 60

def save
  Rig::Log.info "creating instances"
  load_config
  set = { }

  @template.servers.each do |s|
    Rig::Log.debug "server[#{s.count}]= #{s.inspect}"
    1.upto(s.count) do |i|
      n = "#{s.name}#{i}.#@name.#{Rig.get_config(:dns_subdomain)}"
      Rig::Log.debug "  name= #{n}"
      userdata = s.userdata || Rig.get_config(:userdata)
      o = {
          :image_id  => s.image || @image,
          :flavor_id => s.flavor || @flavor,
          :key_name  => s.keypair || @keypair,
          :groups    => s.groups || @groups,
          :user_data => Rig::Model::Userdata.create(n, s.roles, @name, :package => userdata)
      }

      # throw this error, because Fog and AWS don't care if you don't set a keypair
      # but you won't be able to easily connect to it
      raise "No key_name (keypair) set." unless o[:key_name]

      Rig::Log.info "creating instance: name:#{n} environment:#@name roles:#{s.roles.inspect}"
      instance = Rig::Model::Instance.create(o, 'Name' => n, 'Environment' => name, 'Roles' => s.roles.join(","))
      if s.balancer
        set[s.balancer] ||= []
        set[s.balancer] << instance
      end
      @servers << instance
      @dnsdelayed << {
          :server => instance.id,
      }
      if s.count == 1 && s.dnsnames.count > 0
        s.dnsnames.each do |dns|
          @dnsdelayed << {
              :record => "#{dns}.#{Rig.get_config(:dns_zone)}",
              :server => instance.id,
          }
        end
      end
    end
  end

  @template.balancers.each do |b|
    if set[b.name]
      zones    = set[b.name].collect { |e| e.availability_zone }
      balancer = Rig::Model::Balancer.create("#@name-#{b.name}", b.listeners, zones)
      balancer.register_instances(set[b.name].collect { |e| e.id })
      balancer.save

      @balancers << balancer

      if b.primary
        Rig::Log.info ".. primary: #{name}.#{Rig.get_config(:dns_subdomain)}.#@zone #{balancer.attributes[:dns_name]}"
        Rig::Model::Dns.create("#{name}.#{Rig.get_config(:dns_subdomain)}.#@zone", balancer.attributes[:dns_name], :ttl => 30)
      end
    end
  end

  wait_for_dns

  @template.balancers.each do |b|
    if set[b.name]
      if b.sticky
        Rig::Log.info "#@name-#{b.name}: setting stickiness policy"
        type = b.sticky_type
        expires = b.sticky_arg
        Rig::Model::Balancer.sticky(b.name, type, expires, 443, "AWSConsolePolicy-1")
      end
    end
  end

  Rig::Log.info "associating servers' DNS"
  @dnsdelayed.each do |h|
    server = @server_hash[h[:server]]
    record = h[:record]
    record ||= "#{server.tags['Name']}.#{Rig.get_config(:dns_zone)}" if server.tags
    next unless record
    dns    = server.attributes[:dns_name]
    ip     = server.attributes[:public_ip_address]

    Rig::Log.info ".. #{record} dns=#{dns} ip=#{ip}"

    unless dns
      Rig::Log.warn "server #{server.id} doesn't have dns_name"
      next
    end

    Rig::Model::Dns.create(record, dns)
  end

  Rig::Plugin.run "environment:create", self
rescue => e
  Rig::Log.error "error creating environment:\n#{e.message} at #{e.backtrace.join("\n")}"
  destroy
end

#servers_without_dns ⇒ Object 



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# File 'lib/rig/model/environment.rb', line 196

def servers_without_dns
  @servers.select{|e| e.dns_name.nil? }.count
end