Esempio n. 1
0
func (m *AwsVpcBackend) detectRouteTableID(instanceID string, ec2c *ec2.EC2) error {
	resp, err := ec2c.Instances([]string{instanceID}, nil)
	if err != nil {
		return fmt.Errorf("error getting instance info: %v", err)
	}

	if len(resp.Reservations) == 0 {
		return fmt.Errorf("no reservations found")
	}

	if len(resp.Reservations[0].Instances) == 0 {
		return fmt.Errorf("no matching instance found with id: %v", instanceID)
	}

	subnetID := resp.Reservations[0].Instances[0].SubnetId
	vpcID := resp.Reservations[0].Instances[0].VpcId

	log.Info("Subnet-ID: ", subnetID)
	log.Info("VPC-ID: ", vpcID)

	filter := ec2.NewFilter()
	filter.Add("association.subnet-id", subnetID)

	res, err := ec2c.DescribeRouteTables(nil, filter)
	if err != nil {
		return fmt.Errorf("error describing routeTables for subnetID %s: %v", subnetID, err)
	}

	if len(res.RouteTables) != 0 {
		m.cfg.RouteTableID = res.RouteTables[0].RouteTableId
		return nil
	}

	filter = ec2.NewFilter()
	filter.Add("association.main", "true")
	filter.Add("vpc-id", vpcID)

	res, err = ec2c.DescribeRouteTables(nil, filter)
	if err != nil {
		log.Info("error describing route tables: ", err)
	}

	if len(res.RouteTables) == 0 {
		return fmt.Errorf("main route table not found")
	}

	m.cfg.RouteTableID = res.RouteTables[0].RouteTableId

	return nil
}
Esempio n. 2
0
func (m *AwsVpcBackend) DetectRouteTableID(instanceID string, ec2c *ec2.EC2) (string, error) {
	resp, err := ec2c.Instances([]string{instanceID}, nil)
	if err != nil {
		return "", fmt.Errorf("error getting instance info: %v", err)
	}

	subnetID := resp.Reservations[0].Instances[0].SubnetId
	log.Info("SubnetId: ", subnetID)

	filter := ec2.NewFilter()
	filter.Add("association.subnet-id", subnetID)

	res, err := ec2c.DescribeRouteTables(nil, filter)
	if err != nil {
		return "", fmt.Errorf("error describing routeTables for subnetID %s: %v", subnetID, err)
	}

	return res.RouteTables[0].RouteTableId, nil
}