Class: Component::LoadBalancer

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LoadBalancer

Returns a new instance of LoadBalancer.



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# File 'lib/component/load_balancer.rb', line 8

def initialize
  @pools = []
  @configurations = []
end

Instance Attribute Details

#configurations ⇒ Object (readonly)

Returns the value of attribute configurations.



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# File 'lib/component/load_balancer.rb', line 6

def configurations
  @configurations
end

#pools ⇒ Object (readonly)

Returns the value of attribute pools.



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# File 'lib/component/load_balancer.rb', line 6

def pools
  @pools
end

Class Method Details

.generate_xml(interfaces) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 61

def self.generate_xml interfaces
  return if LoadBalancer.instance.pools.nil? or LoadBalancer.instance.pools.empty?
  Nokogiri::XML::Builder.new(:encoding => 'UTF-8') do |xml|
    xml.EdgeGatewayServiceConfiguration('xmlns' => "http://www.vmware.com/vcloud/v1.5", 'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance", 'xsi:schemaLocation' => "http://www.vmware.com/vcloud/v1.5 http://vendor-api-url.net/v1.5/schema/master.xsd") {
      xml.LoadBalancerService {
        xml.IsEnabled 'false'
        LoadBalancer.instance.pools.each do |pool|
          xml.Pool {
            xml.Name pool[:name]

            pool[:ports].each do |port|
              xml.ServicePort {
                xml.IsEnabled port[:enabled]
                xml.Protocol port[:port] == 443 ? "HTTPS" : "HTTP"
                xml.Algorithm 'ROUND_ROBIN'
                xml.Port port[:port]

                if port[:health_check_port]
                  xml.HealthCheckPort port[:health_check_port]
                else
                  xml.HealthCheckPort
                end

                xml.HealthCheck {
                  xml.Mode port[:health_check_mode]
                  xml.Uri port[:health_check_path]
                  xml.HealthThreshold "2"
                  xml.UnhealthThreshold "3"
                  xml.Interval "5"
                  xml.Timeout	"15"
                }
              }
            end

            xml.ServicePort {
              xml.IsEnabled 'false'
              xml.Protocol "TCP"
              xml.Algorithm 'ROUND_ROBIN'
              xml.Port
              xml.HealthCheckPort
              xml.HealthCheck {
                xml.Mode "TCP"
                xml.HealthThreshold "2"
                xml.UnhealthThreshold "3"
                xml.Interval "5"
                xml.Timeout	"15"
              }
            }

            pool[:nodes].each do |node|
              xml.Member {
                xml.IpAddress node
                xml.Weight "1"

                ["HTTP", "HTTPS"].each do |protocol|
                  xml.ServicePort {
                    xml.Protocol protocol
                    xml.Port pool[:ports].find { |port| port[:type] == protocol.downcase.to_sym }[:port]
                    xml.HealthCheckPort
                  }
                end

                xml.ServicePort {
                  xml.Protocol "TCP"
                  xml.Port
                  xml.HealthCheckPort
                }

              }
            end
            xml.Operational "false"
          }
        end

        LoadBalancer.instance.configurations.each do |configuration|
          configuration[:virtual_servers].each do |virtual_server|
            xml.VirtualServer {
              xml.IsEnabled "true"
              xml.Name virtual_server[:name]
              xml.Interface('type' => "application/vnd.vmware.vcloud.orgVdcNetwork+xml", :name => virtual_server[:interface], :href => interfaces[virtual_server[:interface]])
              xml.IpAddress virtual_server[:ip]

              configuration[:pool][:ports].each do |port|
                xml.ServiceProfile {
                  xml.IsEnabled port[:enabled]
                  xml.Protocol port[:type].to_s.upcase
                  xml.Port port[:port]
                  xml.Persistence {
                    if port[:type] == :https
                      xml.Method
                    else
                      xml.Method
                    end
                  }
                }
              end

              xml.ServiceProfile {
                xml.IsEnabled "false"
                xml.Protocol "TCP"
                xml.Port
                xml.Persistence {
                  xml.Method
                }
              }
              xml.Logging "false"
              xml.Pool configuration[:pool][:name]

            }
          end
        end
      }
    }
  end
end

.instance ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 57

def self.instance
  @lb ||= LoadBalancer.new
end

Instance Method Details

#configure(name, &block) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 13

def configure(name, &block)
  @current_configuration = { :name => name, :virtual_servers => [], :pool => nil }
  @configurations << @current_configuration
  yield
ensure
  @current_pool = nil
end

#http(options = {}) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 34

def http(options = {})
  defaults = { :enabled => true, :health_check_path => "/", :port => 80, :health_check_mode => "HTTP" }
  options = defaults.merge(options)
  @current_pool[:ports] << { :port => options[:port], :health_check_port => options[:health_check_port],
                             :health_check_path => options[:health_check_path], :enabled => options[:enabled],
                             :type => :http, :health_check_mode=>options[:health_check_mode] }
end

#https(options = {}) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 42

def https(options = {})
  defaults = { :enabled => true, :health_check_path => "/", :port => 443, :health_check_mode => "SSL" }
  options = defaults.merge(options)
  @current_pool[:ports] << { :port => options[:port], :health_check_port => options[:health_check_port],
                             :health_check_path => options[:health_check_path], :enabled => options[:enabled],
                             :type => :https, :health_check_mode => options[:health_check_mode] }
end

#load_balances(port, options = {}) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 50

def load_balances(port, options = {})
  defaults = { :enabled => true, :health_check_path => "/" }
  options = defaults.merge(options)
  @current_pool[:ports] << { :port => port, :health_check_port => options[:health_check_port], :health_check_path => options[:health_check_path],
                             :enabled => options[:enabled], :type => options[:type] }
end

#pool(nodes, &block) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 27

def pool(nodes, &block)
  @current_pool = { :name => "#{@current_configuration[:name]} pool", :ports => [], :nodes => nodes }
  @current_configuration[:pool] = @current_pool
  @pools << @current_pool
  yield
end

#virtual_server(options = {}) ⇒ Object 



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# File 'lib/component/load_balancer.rb', line 21

def virtual_server(options = {})
  raise "Can't add a virtual server without first having defined a pool" if @current_pool.nil?
  virtual_server = { :name => options[:name], :pool => @current_pool[:name], :ip => options[:ip], :interface => options[:interface] }
  @current_configuration[:virtual_servers] << virtual_server
end