Class: Iravat::IrEC2

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2/ir_ec2.rb

Overview

require ‘./ir_module’

Instance Method Summary collapse

Constructor Details

#initialize ⇒ IrEC2

Returns a new instance of IrEC2.



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# File 'lib/ec2/ir_ec2.rb', line 7

def initialize()
  @logger = IrLogger.new(self.class.name).getLog4rLogger()
  awsConfig=IrAwsConfigManager.new(IRAVAT_AWS_CONFIG_XML_PATH)
  awsConfig.loadConfigurationFile()
  @awsKeyID=awsConfig.getPathFromXML("/ChipMonkAWSConfigs/AWSAccessKey/AWSAccessKey")
  @awsSecretKey=awsConfig.getPathFromXML("/ChipMonkAWSConfigs/AWSAccessKey/AWSAccessSecretKey")
  @awsKeyToUse=awsConfig.getPathFromXML("/ChipMonkAWSConfigs/EC2/KeyNameToUse")
  @awsSecurityGroupToUse=awsConfig.getPathFromXML("/ChipMonkAWSConfigs/EC2/SecurityGroupToUse")
end

Instance Method Details

#connectToAWS ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 26

def connectToAWS()
  begin
    @ec2   = RightAws::Ec2.new(@awsKeyID,@awsSecretKey)
    if(@ec2.nil?)
      @logger.error("Failed to create an access to EC2")
      return false
    end
      return true
    rescue RightAws::AwsError=>err 
      self.error_ec2(err)
      return false
  end
end

#createNewInstance(imageID, instanceType, availablilityZone, userCookieData) ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 110

def createNewInstance(imageID,instanceType, availablilityZone, userCookieData)
   #run_instances(image_id, min_count, max_count, group_ids, key_name, user_data='', addressing_type = nil,
   #instance_type = nil, kernel_id = nil, ramdisk_id = nil, availability_zone = nil, monitoring_enabled = nil,
   #subnet_id = nil, disable_api_termination = nil, instance_initiated_shutdown_behavior = nil, block_device_mappings = nil,
   #placement_group_name = nil, client_token = nil)
   begin
     responseDetails=@ec2.run_instances(imageID,
                      1,
                      1,
                      self.getSecurityGroup(),
                      self.getKey(),
                      userCookieData,
                      nil,
                      instanceType,
                      nil,
                      nil,
                      availablilityZone)[0]



     @logger.debug("============================================")
     @logger.debug("AMI instance launched")
     @logger.debug("Instance ID:" + responseDetails[:aws_instance_id])
     @logger.debug("Instance State:" + responseDetails[:aws_state])
     @logger.debug("Instance Type:" + responseDetails[:aws_instance_type])
     @logger.debug("Availability Zone:" + responseDetails[:aws_availability_zone])
     @logger.debug  ("============================================")
     rescue RightAws::AwsError=>err 
       self.error_ec2(err)
       return nil
   end
   return responseDetails[:aws_instance_id]

end

#error_ec2(err) ⇒ Object

common error handler for RightScale Lib



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# File 'lib/ec2/ir_ec2.rb', line 19

def error_ec2 (err)
    err.errors.each do |e|
      @logger.error(err.errors)
    end
end

#getKey ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 41

def getKey()
  begin
    keyPairs= @ec2.describe_key_pairs([@awsKeyToUse])
    if(keyPairs.nil? or keyPairs.length <= 0)
      @logger.error("No Key pair existing for mentioned key name " + @awsKeyToUse)
      return nil
    end

   return @awsKeyToUse
   rescue RightAws::AwsError=>err 
      self.error_ec2(err)
      return nil
    end
end

#getSecurityGroup ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 57

def  getSecurityGroup()
  begin
    securityGroups = @ec2.describe_security_groups([@awsSecurityGroupToUse])
    if(securityGroups.nil? or securityGroups.length <=0 )
      @logger.error("No security group created")
      return nil
    end

    return [@awsSecurityGroupToUse]
    rescue RightAws::AwsError=>err 
      self.error_ec2(err)
      return nil
  end
end

#printAllActiveImages ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 73

def printAllActiveImages()
  begin
    awsInstances=@ec2.describe_instances
    #Loop on all instance
    awsInstances.each do |awsInstance|
      @logger.info("============================================")
      @logger.info("AWS Instance ID:" + awsInstance[:aws_instance_id])
      @logger.info("AWS Image ID:" + awsInstance[:aws_image_id])
      @logger.info("AWS State:" + awsInstance[:aws_state])
      if( awsInstance[:aws_state] == "running")
        @logger.info("IP Address:" + awsInstance[:ip_address])
        @logger.info("DNS Name:" + awsInstance[:dns_name])
        @logger.info("AWS Instance Type:" + awsInstance[:aws_instance_type])
        @logger.info("AWS Private DNS Name:" + awsInstance[:private_dns_name])
        @logger.info("AWS Instance Launch Time:" + awsInstance[:aws_launch_time])
        @logger.info("AWS Availability Zone:" + awsInstance[:aws_availability_zone])
    
        blockDevicesMapped=awsInstance[:block_device_mappings]
    
        blockDevicesMapped.each do |blockDevice|
          @logger.info("  -----------------------------------------------")
          @logger.info("  EBS Device Name:" + blockDevice[:device_name])
          @logger.info("  EBS Device ID:" + blockDevice[:ebs_volume_id])
          @logger.info("  EBS Device Attach Time:" + blockDevice[:ebs_attach_time])
          @logger.info("  -----------------------------------------------")
        end
      end

      @logger.info("============================================")     
    end
    rescue RightAws::AwsError=>err 
      self.error_ec2(err)
      return nil
  end
end

#rebootInstance(instanceID) ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 146

def rebootInstance(instanceID)
   begin
     response=@ec2.reboot_instances(instanceID)
     if(response == false)
        @logger.debug("AMI instance id " + instanceID + "failed to reboot")      
     else
        @logger.debug("AMI instance id " + instanceID + "rebooted successfully")
     end
     rescue RightAws::AwsError=>err 
       self.error_ec2(err)
       return nil
   end
end

#terminateInstance(instanceID) ⇒ Object 



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# File 'lib/ec2/ir_ec2.rb', line 160

def terminateInstance(instanceID)
   begin
    instanceIDArr=[instanceID]
    responseDetails=@ec2.terminate_instances(instanceIDArr)
    @logger.debug("============================================")
    @logger.debug("AMI instance terminated")
    @logger.debug("Instance ID:" + responseDetails[0][:aws_instance_id])
    @logger.debug("Current State Code:" + responseDetails[0][:aws_current_state_code].to_s())
    @logger.debug("Current State Name:" + responseDetails[0][:aws_current_state_name])
    @logger.debug("Previous State Code:" + responseDetails[0][:aws_prev_state_code].to_s())
    @logger.debug("Previous State Name:" + responseDetails[0][:aws_prev_state_name])
    @logger.debug("============================================")
    rescue RightAws::AwsError=>err 
      self.error_ec2(err)
      return nil
  end      
end