Class: EC2

Inherits:
Object
  • Object
show all
Includes:
AWS
Defined in:
lib/OriginalAWS/EC2.rb

Constant Summary collapse

ENDPOINT_URI = 
URI.parse("https://ec2.amazonaws.com/")
API_VERSION = 
'2008-08-08'
SIGNATURE_VERSION = 
'1'
HTTP_METHOD =

‘GET’

'POST'

Instance Method Summary collapse

Instance Method Details

#allocate_address ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 573

def allocate_address()
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'AllocateAddress',
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return xml_doc.elements['//publicIp'].text
end

#associate_address(instance_id, public_ip) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 596

def associate_address(instance_id, public_ip)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'AssociateAddress',
    'InstanceId' => instance_id,
    'PublicIp' => public_ip
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return xml_doc.elements['//return'].text == 'true'
end

#attach_volume(volume_id, instance_id, device) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 690

def attach_volume(volume_id, instance_id, device)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'AttachVolume',
    'VolumeId' => volume_id,
    'InstanceId' => instance_id,
    'Device' => device
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  res = {}
  res[:volume_id] = xml_doc.elements['//volumeId'].text
  res[:instance_id] = xml_doc.elements['//instanceId'].text
  res[:device] = xml_doc.elements['//device'].text
  res[:status] = xml_doc.elements['//status'].text
  res
end

#authorize_ingress_by_cidr(group_name, ip_protocol, from_port, to_port = from_port, cidr_range = '0.0.0.0/0') ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 284

def authorize_ingress_by_cidr(group_name, ip_protocol, from_port,
                            to_port=from_port, cidr_range='0.0.0.0/0')

  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'AuthorizeSecurityGroupIngress',
    'GroupName' => group_name,
    'IpProtocol' => ip_protocol,
    'FromPort' => from_port,
    'ToPort' => to_port,
    'CidrIp' => cidr_range,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#authorize_ingress_by_group(group_name, source_security_group_name, source_security_group_owner_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 301

def authorize_ingress_by_group(group_name, source_security_group_name,
                               source_security_group_owner_id)

  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'AuthorizeSecurityGroupIngress',
    'GroupName' => group_name,
    'SourceSecurityGroupName' => source_security_group_name,
    'SourceSecurityGroupOwnerId' => source_security_group_owner_id,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)

  return true
end

#confirm_product_instance(product_code, instance_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 534

def confirm_product_instance(product_code, instance_id)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'ConfirmProductInstance',
    'ProductCode' => product_code,
    'InstanceId' => instance_id
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  elems = REXML::Document.new(response.body).elements

  result = {
    :result => elems['//result'].text == true
  }
  result[:owner_id] = elems['//ownerId'].text if elems['//ownerId']
  return result
end

#create_keypair(keyname, autosave = true) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 152

def create_keypair(keyname, autosave=true)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'CreateKeyPair',
    'KeyName' => keyname,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  keypair = {
    :name => xml_doc.elements['//keyName'].text,
    :fingerprint => xml_doc.elements['//keyFingerprint'].text,
    :material => xml_doc.elements['//keyMaterial'].text
  }

  if autosave
    # Locate key material and save to a file named after the keyName
    File.open("#{keypair[:name]}.pem",'w') do |file|
      file.write(keypair[:material] + "\n")
      keypair[:file_name] = file.path
    end
  end

  return keypair
end

#create_security_group(group_name, group_description = group_name) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 396

def create_security_group(group_name, group_description=group_name)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'CreateSecurityGroup',
    'GroupName' => group_name,
    'GroupDescription' => group_description,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#create_snapshot(volume_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 730

def create_snapshot(volume_id)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'CreateSnapshot',
    'VolumeId' => volume_id
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  res = {}
  res[:snapshot_id] = xml_doc.elements['//snapshotId'].text
  res[:volume_id] = xml_doc.elements['//volumeId'].text
  res[:status] = xml_doc.elements['//status'].text
  res[:start_time] = xml_doc.elements['//startTime'].text
  res[:progress] = xml_doc.elements['//progress'].text
  res
end

#create_volume(size, availability_zone) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 621

def create_volume(size, availability_zone)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'CreateVolume',
    'Size' => size,
    'AvailabilityZone' => availability_zone
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  res = {}
  res[:volume_id] = xml_doc.elements['//volumeId'].text
  res[:size] = xml_doc.elements['//size'].text
  res[:status] = xml_doc.elements['//status'].text
  res[:create_time] = xml_doc.elements['//createTime'].text
  res[:availability_zone] = xml_doc.elements['//availabilityZone'].text
  res[:snapshot_id] = xml_doc.elements['//snapshotId'].text
  res
end

#create_volume_from_snapshot(snapshot_id, availability_zone) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 641

def create_volume_from_snapshot(snapshot_id, availability_zone)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'CreateVolume',
    'SnapshotId' => snapshot_id,
    'AvailabilityZone' => availability_zone
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  res = {}
  res[:volume_id] = xml_doc.elements['//volumeId'].text
  res[:size] = xml_doc.elements['//size'].text
  res[:status] = xml_doc.elements['//status'].text
  res[:create_time] = xml_doc.elements['//createTime'].text
  res[:availability_zone] = xml_doc.elements['//availabilityZone'].text
  res[:snapshot_id] = xml_doc.elements['//snapshotId'].text
  res
end

#delete_keypair(keyname) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 179

def delete_keypair(keyname)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DeleteKeyPair',
    'KeyName' => keyname,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#delete_security_group(group_name) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 408

def delete_security_group(group_name)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DeleteSecurityGroup',
    'GroupName' => group_name,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#delete_snapshot(snapshot_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 748

def delete_snapshot(snapshot_id)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DeleteSnapshot',
    'SnapshotId' => snapshot_id
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return xml_doc.elements['//return'].text == 'true'
end

#delete_volume(volume_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 661

def delete_volume(volume_id)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DeleteVolume',
    'VolumeId' => volume_id
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return xml_doc.elements['//return'].text == 'true'
end

#deregister_image(image_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 433

def deregister_image(image_id)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DeregisterImage',
    'ImageId' => image_id,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#describe_addresses(*addresses) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 552

def describe_addresses(*addresses)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeAddresses',
    },{
    'PublicIp' => addresses
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  addresses = []
  xml_doc.elements.each('//addressesSet/item') do |elem|
    addresses << {
      :public_ip => elem.elements['publicIp'].text,
      :instance_id => elem.elements['instanceId'].text
    }
  end
  return addresses
end

#describe_availability_zones(*names) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 109

def describe_availability_zones(*names)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeAvailabilityZones',
    },{
    'ZoneName' => names
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  zones = []
  xml_doc.elements.each('//availabilityZoneInfo/item') do |elem|
    zones << {
      :name => elem.elements['zoneName'].text,
      :state => elem.elements['zoneState'].text
    }
  end
  return zones
end

#describe_image_attribute(image_id, attribute = 'launchPermission') ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 444

def describe_image_attribute(image_id, attribute='launchPermission')
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeImageAttribute',
    'ImageId' => image_id,
    'Attribute' => attribute,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  result = {:id => xml_doc.elements['//imageId'].text}

  if xml_doc.elements['//launchPermission']
    result[:launch_perms_user] = []
    result[:launch_perms_group] = []
    xml_doc.elements.each('//launchPermission/item') do |lp|
      elems = lp.elements
      result[:launch_perms_group] << elems['group'].text if elems['group']
      result[:launch_perms_user] << elems['userId'].text if elems['userId']
    end
  end

  if xml_doc.elements['//productCodes']
    result[:product_codes] = []
    xml_doc.elements.each('//productCodes/item') do |pc|
      result[:product_codes] << pc.text
    end
  end

  return result
end

#describe_images(options = {}) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 190

def describe_images(options={})
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeImages',
    # Despite API documentation, the ImageType parameter is *not* supported, see:
    # http://developer.amazonwebservices.com/connect/thread.jspa?threadID=20655&tstart=25
    # 'ImageType' => options[:type]
    },{
    'ImageId' => options[:image_ids],
    'Owner' => options[:owners],
    'ExecutableBy' => options[:executable_by]
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  images = []
  xml_doc.elements.each('//imagesSet/item') do |image|
    image_details = {
      :id => image.elements['imageId'].text,
      :location => image.elements['imageLocation'].text,
      :state => image.elements['imageState'].text,
      :owner_id => image.elements['imageOwnerId'].text,
      :is_public => image.elements['isPublic'].text == 'true',
      :architecture => image.elements['architecture'].text,
      :type => image.elements['imageType'].text
    }
    
    # Items only available when listing 'machine' image types
    # that have associated kernel and ramdisk metadata
    if image.elements['kernelId'] 
      image_details[:kernel_id] = image.elements['kernelId'].text
    end
    if image.elements['ramdiskId']
      image_details[:ramdisk_id] = image.elements['ramdiskId'].text
    end
    
    image.elements.each('productCodes/item/productCode') do |code|
      image_details[:product_codes] ||= []
      image_details[:product_codes] << code.text
    end

    images << image_details
  end

  return images
end

#describe_instances(*instance_ids) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 91

def describe_instances(*instance_ids)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeInstances',
    },{
    'InstanceId' => instance_ids
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  reservations = []
  xml_doc.elements.each('//reservationSet/item') do |elem|
    reservations << parse_reservation(elem)
  end
  return reservations
end

#describe_keypairs(*keypair_names) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 130

def describe_keypairs(*keypair_names)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeKeyPairs',
    },{
    'KeyName' => keypair_names
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  keypairs = []
  xml_doc.elements.each('//keySet/item') do |key|
    keypairs << {
      :name => key.elements['keyName'].text,
      :fingerprint => key.elements['keyFingerprint'].text
    }
  end

  return keypairs
end

#describe_security_groups(*security_group_names) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 317

def describe_security_groups(*security_group_names)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeSecurityGroups',
    },{
    'GroupName' => security_group_names,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  security_groups = []
  xml_doc.elements.each('//securityGroupInfo/item') do |sec_group|
    grants = []
    sec_group.elements.each('ipPermissions/item') do |item|
      grant = {
        :protocol => item.elements['ipProtocol'].text,
        :from_port => item.elements['fromPort'].text,
        :to_port => item.elements['toPort'].text
      }

      item.elements.each('groups/item') do |group|
        grant[:groups] ||= []
        grant[:groups] << {
          :user_id => group.elements['userId'].text,
          :name => group.elements['groupName'].text
        }
      end

      if item.elements['ipRanges/item']
        grant[:ip_range] = item.elements['ipRanges/item/cidrIp'].text
      end

      grants << grant
    end

    security_groups << {
      :name => sec_group.elements['groupName'].text,
      :description => sec_group.elements['groupDescription'].text,
      :owner_id => sec_group.elements['ownerId'].text,
      :grants => grants
    }
  end

  return security_groups
end

#describe_snapshots(*snapshot_ids) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 760

def describe_snapshots(*snapshot_ids)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeSnapshots',
    },{
    'SnapshotId' => snapshot_ids
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  snapshots = []
  xml_doc.elements.each('//snapshotSet/item') do |elem|
    snapshots << {
    :snapshot_id => elem.elements['snapshotId'].text,
    :volume_id => elem.elements['volumeId'].text,
    :status => elem.elements['status'].text,
    :start_time => elem.elements['startTime'].text,
    :progress =>  elem.elements['progress'].text    
    }
  end
  return snapshots
end

#describe_volumes(*volume_ids) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 673

def describe_volumes(*volume_ids)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DescribeVolumes',
    },{
    'VolumeId' => volume_ids
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  volumes = []
  xml_doc.elements.each('//volumeSet/item') do |elem|
    volumes << parse_volume(elem)
  end
  return volumes
end

#detach_volume(volume_id, instance_id = nil, device = nil, force = nil) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 709

def detach_volume(volume_id, instance_id = nil, device = nil, force = nil)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DetachVolume',
    'VolumeId' => volume_id,
    'InstanceId' => instance_id,
    'Device' => device,
    'Force' => force
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  res = {}
  res[:volume_id] = xml_doc.elements['//volumeId'].text
  res[:instance_id] = xml_doc.elements['//instanceId'].text
  res[:device] = xml_doc.elements['//device'].text
  res[:status] = xml_doc.elements['//status'].text
  res[:attach_time] = xml_doc.elements['//attachTime'].text
  res
end

#disassociate_address(public_ip) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 609

def disassociate_address(public_ip)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'DisassociateAddress',
    'PublicIp' => public_ip
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return xml_doc.elements['//return'].text == 'true'
end

#get_console_output(instance_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 504

def get_console_output(instance_id)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'GetConsoleOutput',
    'InstanceId' => instance_id,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  elems = REXML::Document.new(response.body).elements

  return {
    :id => elems['//instanceId'].text,
    :timestamp => elems['//timestamp'].text,
    :output => Base64.decode64(elems['//output'].text).strip
  }
end

#modify_image_attribute(image_id, attribute, operation_type, attribute_values) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 477

def modify_image_attribute(image_id, attribute,
                           operation_type, attribute_values)

  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'ModifyImageAttribute',
    'ImageId' => image_id,
    'Attribute' => attribute,
    'OperationType' => operation_type,
    }, attribute_values)

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#parse_reservation(elem) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 21

def parse_reservation(elem)
  reservation = {
    :reservation_id => elem.elements['reservationId'].text,
    :owner_id => elem.elements['ownerId'].text,
  }

  group_names = []
  elem.elements.each('groupSet/item') do |group|
    group_names << group.elements['groupId'].text
  end
  reservation[:groups] = group_names

  reservation[:instances] = []
  elem.elements.each('instancesSet/item') do |instance|
    elems = instance.elements
    item = {
      :id => elems['instanceId'].text,
      :image_id => elems['imageId'].text,
      :state => elems['instanceState/name'].text,
      :private_dns => elems['privateDnsName'].text,
      :public_dns => elems['dnsName'].text,
      :type => elems['instanceType'].text,
      :launch_time => elems['launchTime'].text
    }

    item[:reason] = elems['reason'].text if elems['reason']
    item[:key_name] = elems['keyName'].text if elems['keyName']
    item[:index] = elems['amiLaunchIndex'].text if elems['amiLaunchIndex']
    if elems['placement']
      item[:zone] = elems['placement/availabilityZone'].text
    end
    item[:kernel_id] = elems['kernelId'].text if elems['kernelId']
    item[:ramdisk_id] = elems['ramdiskId'].text if elems['ramdiskId']

    if elems['productCodes']
      item[:product_codes] = []
      elems.each('productCodes/item/productCode') do |code|
        item[:product_codes] << code.text
      end
    end

    reservation[:instances] << item
  end

  return reservation
end

#parse_volume(elem) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 68

def parse_volume(elem)
  volume = {
    :volume_id => elem.elements['volumeId'].text,
    :size => elem.elements['size'].text,
    :status => elem.elements['status'].text,
    :create_time => elem.elements['createTime'].text,
    :snapshot_id => elem.elements['snapshotId'].text,
    :availability_zone => elem.elements['availabilityZone'].text,
  }
  attachments = []
  elem.elements.each('attachmentSet/item') do |attachment|
    attachments << {
      :volume_id => attachment.elements['volumeId'].text,
      :instance_id => attachment.elements['instanceId'].text,
      :device => attachment.elements['device'].text,
      :status => attachment.elements['status'].text,
      :attach_time => attachment.elements['attachTime'].text
    }
  end
  volume[:attachment_set] = attachments
  return volume
end

#reboot_instances(*instance_ids) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 521

def reboot_instances(*instance_ids)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'RebootInstances',
    },{
    'InstanceId' => instance_ids,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#register_image(image_location) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 420

def register_image(image_location)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'RegisterImage',
    'ImageLocation' => image_location,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  return xml_doc.elements['//imageId'].text
end

#release_address(public_ip) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 584

def release_address(public_ip)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'ReleaseAddress',
    'PublicIp' => public_ip
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return xml_doc.elements['//return'].text == 'true'
end

#reset_image_attribute(image_id, attribute = 'launchPermission') ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 492

def reset_image_attribute(image_id, attribute='launchPermission')
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'ResetImageAttribute',
    'ImageId' => image_id,
    'Attribute' => attribute,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#revoke_ingress_by_cidr(group_name, ip_protocol, from_port, to_port = from_port, cidr_range = '0.0.0.0/0') ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 364

def revoke_ingress_by_cidr(group_name, ip_protocol, from_port,
                           to_port=from_port, cidr_range='0.0.0.0/0')

  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'RevokeSecurityGroupIngress',
    'GroupName' => group_name,
    'IpProtocol' => ip_protocol,
    'FromPort' => from_port,
    'ToPort' => to_port,
    'CidrIp' => cidr_range,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#revoke_ingress_by_group(group_name, source_security_group_name, source_security_group_owner_id) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 381

def revoke_ingress_by_group(group_name, source_security_group_name,
                            source_security_group_owner_id)

  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'RevokeSecurityGroupIngress',
    'GroupName' => group_name,
    'SourceSecurityGroupName' => source_security_group_name,
    'SourceSecurityGroupOwnerId' => source_security_group_owner_id,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  return true
end

#run_instances(image_id, min_count = 1, max_count = min_count, options = {}) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 238

def run_instances(image_id, min_count=1, max_count=min_count, options={})
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'RunInstances',
    'ImageId' => image_id,
    'MinCount' => min_count,
    'MaxCount' => max_count,
    'KeyName' => options[:key_name],
    'InstanceType' => options[:instance_type],
    'UserData' => encode_base64(options[:user_data]),
    
    'Placement.AvailabilityZone' => options[:zone],
    'KernelId' => options[:kernel_id],
    'RamdiskId' => options[:ramdisk_id]
    },{
    'SecurityGroup' => options[:security_groups]
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)
  return parse_reservation(xml_doc.root)
end

#terminate_instances(*instance_ids) ⇒ Object 



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# File 'lib/OriginalAWS/EC2.rb', line 261

def terminate_instances(*instance_ids)
  parameters = build_query_params(API_VERSION, SIGNATURE_VERSION,
    {
    'Action' => 'TerminateInstances',
    },{
    'InstanceId' => instance_ids,
    })

  response = do_query(HTTP_METHOD, ENDPOINT_URI, parameters)
  xml_doc = REXML::Document.new(response.body)

  instances = []
  xml_doc.elements.each('//instancesSet/item') do |item|
    instances << {
      :id => item.elements['instanceId'].text,
      :state => item.elements['shutdownState/name'].text,
      :previous_state => item.elements['previousState/name'].text
    }
  end

  return instances
end