Class: StackMate::CloudStackInstance

Inherits:
CloudStackResource show all
Defined in:
lib/stackmate/participants/cloudstack.rb

Instance Attribute Summary

Attributes inherited from CloudStackResource

#name

Instance Method Summary collapse

Methods included from Logging

configure_logger_for, #logger, logger_for

Constructor Details

#initialize ⇒ CloudStackInstance

Returns a new instance of CloudStackInstance.



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# File 'lib/stackmate/participants/cloudstack.rb', line 68

def initialize()
  super
  @localized = {}
  load_local_mappings()
end

Instance Method Details

#default_zone_id ⇒ Object 



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# File 'lib/stackmate/participants/cloudstack.rb', line 127

def default_zone_id
    if @localized['zoneid'] 
        @localized['zoneid']
    else
        '1'
    end
end

#image_id(imgstring, resolved, mappings) ⇒ Object 



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# File 'lib/stackmate/participants/cloudstack.rb', line 135

def image_id(imgstring, resolved, mappings)
    #TODO convoluted logic only handles the cases
    #ImageId : {"Ref" : "FooBar"}
    #ImageId :  { "Fn::FindInMap" : [ "Map1", { "Ref" : "OuterKey" },
    #                          { "Fn::FindInMap" : [ "Map2", { "Ref" : "InnerKey" }, "InnerVal" ] } ] },
    #ImageId :  { "Fn::FindInMap" : [ "Map1", { "Ref" : "Key" },  "Value" ] } ] },
    if imgstring['Ref']
        return resolved[imgstring['Ref']]
    else 
        if imgstring['Fn::FindInMap']
            key = resolved[imgstring['Fn::FindInMap'][1]['Ref']]
            #print "Key = ", key, "\n"
            if imgstring['Fn::FindInMap'][2]['Ref']
                val = resolved[imgstring['Fn::FindInMap'][2]['Ref']]
                #print "Val [Ref] = ", val, "\n"
            else
                if imgstring['Fn::FindInMap'][2]['Fn::FindInMap']
                    val = image_id(imgstring['Fn::FindInMap'][2], resolved, mappings)
                    #print "Val [FindInMap] = ", val, "\n"
                else
                    val = imgstring['Fn::FindInMap'][2]
                end
            end
        end
        return mappings[imgstring['Fn::FindInMap'][0]][key][val]
    end
end

#load_local_mappings ⇒ Object 



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# File 'lib/stackmate/participants/cloudstack.rb', line 119

def load_local_mappings()
    begin
        @localized = YAML.load_file('local.yaml')
    rescue
        print "Warning: Failed to load localized mappings from local.yaml\n"
    end
end

#on_workitem ⇒ Object 



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# File 'lib/stackmate/participants/cloudstack.rb', line 74

def on_workitem
  myname = workitem.participant_name
  @name = myname
  resolved = workitem.fields['ResolvedNames']
  resolved['AWS::StackId'] = workitem.fei.wfid #TODO put this at launch time
  props = workitem.fields['Resources'][workitem.participant_name]['Properties']
  security_group_names = []
  props['SecurityGroups'].each do |sg| 
      sg_name = resolved[sg['Ref']]
      security_group_names << sg_name
  end
  keypair = resolved[props['KeyName']['Ref']] if props['KeyName']
  userdata = nil
  if props['UserData']
      userdata = user_data(props['UserData'], resolved)
  end
  templateid = image_id(props['ImageId'], resolved, workitem.fields['Mappings'])
  templateid = @localized['templates'][templateid] if @localized['templates']
  svc_offer = resolved[props['InstanceType']['Ref']]  #TODO fragile
  svc_offer = @localized['service_offerings'][svc_offer] if @localized['service_offerings']
  args = { 'serviceofferingid' => svc_offer,
           'templateid' => templateid,
           'zoneid' => default_zone_id,
           'securitygroupnames' => security_group_names.join(','),
           'displayname' => myname,
           #'name' => myname
  }
  args['keypair'] = keypair if keypair
  args['userdata'] = userdata  if userdata
  resultobj = make_request('deployVirtualMachine', args)
  logger.debug("Created resource #{myname}")

  reply
end

#user_data(datum, resolved) ⇒ Object 



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# File 'lib/stackmate/participants/cloudstack.rb', line 109

def user_data(datum, resolved)
    #TODO make this more general purpose
    actual = datum['Fn::Base64']['Fn::Join']
    delim = actual[0]
    data = actual[1].map { |d|
        d.kind_of?(Hash) ? resolved[d['Ref']]: d
    }
    Base64.urlsafe_encode64(data.join(delim))
end