Class: Ec2::Control::Query

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2/control/query.rb

Instance Method Summary collapse

Constructor Details

#initialize(ec2) ⇒ Query

Returns a new instance of Query.



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# File 'lib/ec2/control/query.rb', line 6

def initialize(ec2)
  @ec2 = ec2
  self.init
end

Instance Method Details

#__init_availability_zones(reload = false) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 100

def __init_availability_zones(reload=false)

  if @available_zones.nil? || reload
    available_zones = []
    availability_zone_info = @ec2.describe_availability_zones.availabilityZoneInfo

    if availability_zone_info && !(z_item = availability_zone_info.item).empty?
      z_item.each do |zone|
        available_zones << {:region => zone.regionName, :name => zone.zoneName, :status => zone.zoneState}
      end
    end

    @available_zones = available_zones
  end

  @available_zones
end

#__init_elastic_ips(reload = false) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 118

def __init_elastic_ips(reload=false)

  if @elastic_ips.nil? || reload
    ips = []
    addressesSet = @ec2.describe_addresses.addressesSet

    if addressesSet && !(a_item = addressesSet.item).empty?
      a_item.each do |adr|
        ips << {:instance_id => adr.instanceId, :ip => adr.publicIp}
      end
    end
    @elastic_ips = ips
  end

  @elastic_ips
end

#__init_running_and_pending(reload = false) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 168

def __init_running_and_pending(reload=false)

  if @instances.nil? || reload    
    @instances = []

    reservationSet = @ec2.describe_instances.reservationSet

    if reservationSet && !(r_item = reservationSet.item).empty?
      r_item.each do |reservation|

        reservation.groupSet.item.each do |grp| 

          if grp.groupId =~ /^ec2_control_/
            grp_name = grp.groupId.gsub(/ec2_control_/, '')

            instancesSet = reservation.instancesSet

            if instancesSet && !(i_item = instancesSet.item).empty?

              raise "this version of ec2-control cannot handle more than one instance per reservation" if i_item.length > 1

              instance = i_item.first
              instance_id = instance.instanceId

              @instances << {:name => grp_name, :id => instance_id, :status => instance.instanceState.name}

            end

          end
        end
      end
    end
  end

  @instances
end

#__init_security_groups(reload = false) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 90

def __init_security_groups(reload=false)

  if @security_groups.nil? || reload
    @security_groups = @ec2.describe_security_groups.securityGroupInfo.item.collect{ |security_group| security_group.groupName }
  end

  @security_groups

end

#__init_volumes(reload = false) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 136

def __init_volumes(reload=false)

  if @volumes.nil? || reload
    volumes = []
    volumeSet = @ec2.describe_volumes.volumeSet

    if volumeSet && !(v_item = volumeSet.item).empty?
      v_item.each do |volume|
        
        volume_id         = volume.volumeId
        availability_zone = volume.availabilityZone
        status            = volume.status
        instance_id       = nil
        
        attachmentSet = volume.attachmentSet
        
        if attachmentSet && !(a_item = attachmentSet.item).empty?
          raise "this version of ec2-control cannot handle more than one attachement set" if a_item.length > 1
          instance_id     = a_item.first.instanceId
        end
        
        volumes << {:volume_id => volume_id, :availability_zone => availability_zone, :instance_id => instance_id, :status => status}
      end
    end

    @volumes = volumes
  end

  @volumes

end

#availability_zone_available?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 23

def availability_zone_available?(name)
  @available_zones.find{|zone| zone.status == "available" && zone.name == name}
end

#elastic_ip_associated?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 44

def elastic_ip_associated?(ip)
  @elastic_ips.find{|elastic|elastic[:ip] == ip && elastic[:instance_id]}
end

#elastic_ip_associated_instance_id(ip) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 48

def elastic_ip_associated_instance_id(ip)
  @elastic_ips.find{|elastic|elastic[:ip] == ip}[:instance_id]
end

#elastic_ip_available?(ip) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 40

def elastic_ip_available?(ip)
  @elastic_ips.find{|elastic|elastic[:ip] == ip}
end

#init ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 11

def init
  __init_security_groups(true)
  __init_availability_zones(true)
  __init_volumes(true)
  __init_elastic_ips(true)
  __init_running_and_pending(true)
end

#instance_id_by_instance_name(name) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 57

def instance_id_by_instance_name(name)
  instance = @instances.find{|instance|instance[:status] == "running" && instance[:name] == name}
  instance ? instance[:id] : nil
end

#instance_name_by_instance_id(instance_id) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 52

def instance_name_by_instance_id(instance_id)
  instance = @instances.find{|instance|instance[:id] == instance_id}
  instance ? instance[:name] : nil
end

#instance_pending_by_name?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 66

def instance_pending_by_name?(value)
  @instances.find{|instance|instance[:status] == "pending" && instance[:name] == value}
end

#instance_pending_count ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 78

def instance_pending_count
  @instances.find_all{|instance|instance[:status] == "pending"}.length
end

#instance_pending_names ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 86

def instance_pending_names
  @instances.find_all{|instance|instance[:status] == "pending"}.collect{|instance|instance[:name]}
end

#instance_running_by_name?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 62

def instance_running_by_name?(value)
  @instances.find{|instance|instance[:status] == "running" && instance[:name] == value}
end

#instance_running_count ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 74

def instance_running_count
  @instances.find_all{|instance|instance[:status] == "running"}.length
end

#instance_running_names ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 82

def instance_running_names
  @instances.find_all{|instance|instance[:status] == "running"}.collect{|instance|instance[:name]}
end

#instances_running_except_names(names) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 70

def instances_running_except_names(names)
  @instances.find_all{|instance|instance[:status] == "running" && !names.include?(instance[:name])}
end

#security_group_exist?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 19

def security_group_exist?(name)
  @security_groups.include?(name)
end

#volume_available?(volume_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 27

def volume_available?(volume_id)
  @volumes.find{|volume| volume[:status] == "available" && volume[:volume_id] == volume_id}
end

#volume_mounted?(volume_id) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ec2/control/query.rb', line 31

def volume_mounted?(volume_id)
  @volumes.find{|volume| volume[:status] == "in-use" && volume[:volume_id] == volume_id}
end

#volume_mounted_instance_id(volume_id) ⇒ Object 



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# File 'lib/ec2/control/query.rb', line 35

def volume_mounted_instance_id(volume_id)
  volume = @volumes.find{|volume| volume[:status] == "in-use" && volume[:volume_id] == volume_id}
  volume ? volume[:instance_id] : nil
end