awsutils

package
v1.0.0 Latest Latest
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 Go to latest Published: Jun 3, 2018 License: Apache-2.0 Imports: 15 Imported by: 0

Documentation

Index

Constants

View Source 
const (

	// UnknownInstanceType indicates that the instance type is not yet supported
	UnknownInstanceType = "vpc ip resource(eni ip limit): unknown instance type"
)

Variables

View Source 
var InstanceENIsAvailable = map[string]int{
	"c1.medium":   2,
	"c1.xlarge":   4,
	"c3.large":    3,
	"c3.xlarge":   4,
	"c3.2xlarge":  4,
	"c3.4xlarge":  8,
	"c3.8xlarge":  8,
	"c4.large":    3,
	"c4.xlarge":   4,
	"c4.2xlarge":  4,
	"c4.4xlarge":  8,
	"c4.8xlarge":  8,
	"cc2.8xlarge": 8,
	"cg1.4xlarge": 8,
	"cr1.8xlarge": 8,
	"d2.xlarge":   4,
	"d2.2xlarge":  4,
	"d2.4xlarge":  8,
	"d2.8xlarge":  8,
	"f1.2xlarge":  4,
	"f1.16xlarge": 8,
	"g2.2xlarge":  4,
	"g2.8xlarge":  8,
	"g3.4xlarge":  8,
	"g3.8xlarge":  8,
	"g3.16xlarge": 15,
	"hi1.4xlarge": 8,
	"hs1.8xlarge": 8,
	"i2.xlarge":   4,
	"i2.2xlarge":  4,
	"i2.4xlarge":  8,
	"i2.8xlarge":  8,
	"i3.large":    3,
	"i3.xlarge":   4,
	"i3.2xlarge":  4,
	"i3.4xlarge":  8,
	"i3.8xlarge":  8,
	"i3.16xlarge": 15,
	"m1.small":    2,
	"m1.medium":   2,
	"m1.large":    3,
	"m1.xlarge":   4,
	"m2.xlarge":   4,
	"m2.2xlarge":  4,
	"m2.4xlarge":  8,
	"m3.medium":   2,
	"m3.large":    3,
	"m3.xlarge":   4,
	"m3.2xlarge":  4,
	"m4.large":    2,
	"m4.xlarge":   4,
	"m4.2xlarge":  4,
	"m4.4xlarge":  8,
	"m4.10xlarge": 8,
	"m4.16xlarge": 8,
	"p2.xlarge":   4,
	"p2.8xlarge":  8,
	"p2.16xlarge": 8,
	"r3.large":    3,
	"r3.xlarge":   4,
	"r3.2xlarge":  4,
	"r3.4xlarge":  8,
	"r3.8xlarge":  8,
	"r4.large":    3,
	"r4.xlarge":   4,
	"r4.2xlarge":  4,
	"r4.4xlarge":  8,
	"r4.8xlarge":  8,
	"r4.16xlarge": 15,
	"t1.micro":    2,
	"t2.nano":     2,
	"t2.micro":    2,
	"t2.small":    2,
	"t2.medium":   3,
	"t2.large":    3,
	"t2.xlarge":   3,
	"t2.2xlarge":  3,
	"x1.16xlarge": 8,
	"x1.32xlarge": 8,
}

InstanceENIsAvailable contains a mapping of instance types to the number of ENIs available which is described at https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#AvailableIpPerENI

View Source 
var InstanceIPsAvailable = map[string]int64{
	"c1.medium":   6,
	"c1.xlarge":   15,
	"c3.large":    10,
	"c3.xlarge":   15,
	"c3.2xlarge":  15,
	"c3.4xlarge":  30,
	"c3.8xlarge":  30,
	"c4.large":    10,
	"c4.xlarge":   15,
	"c4.2xlarge":  15,
	"c4.4xlarge":  30,
	"c4.8xlarge":  30,
	"cc2.8xlarge": 30,
	"cg1.4xlarge": 30,
	"cr1.8xlarge": 30,
	"d2.xlarge":   15,
	"d2.2xlarge":  15,
	"d2.4xlarge":  30,
	"d2.8xlarge":  30,
	"f1.2xlarge":  15,
	"f1.16xlarge": 50,
	"g2.2xlarge":  15,
	"g2.8xlarge":  30,
	"g3.4xlarge":  30,
	"g3.8xlarge":  30,
	"g3.16xlarge": 50,
	"hi1.4xlarge": 30,
	"hs1.8xlarge": 30,
	"i2.xlarge":   15,
	"i2.2xlarge":  15,
	"i2.4xlarge":  30,
	"i2.8xlarge":  30,
	"i3.large":    10,
	"i3.xlarge":   15,
	"i3.2xlarge":  15,
	"i3.4xlarge":  30,
	"i3.8xlarge":  30,
	"i3.16xlarge": 50,
	"m1.small":    4,
	"m1.medium":   6,
	"m1.large":    10,
	"m1.xlarge":   15,
	"m2.xlarge":   15,
	"m2.2xlarge":  30,
	"m2.4xlarge":  30,
	"m3.medium":   6,
	"m3.large":    10,
	"m3.xlarge":   15,
	"m3.2xlarge":  30,
	"m4.large":    10,
	"m4.xlarge":   15,
	"m4.2xlarge":  15,
	"m4.4xlarge":  30,
	"m4.10xlarge": 30,
	"m4.16xlarge": 30,
	"p2.xlarge":   15,
	"p2.8xlarge":  30,
	"p2.16xlarge": 30,
	"r3.large":    10,
	"r3.xlarge":   15,
	"r3.2xlarge":  15,
	"r3.4xlarge":  30,
	"r3.8xlarge":  30,
	"r4.large":    10,
	"r4.xlarge":   15,
	"r4.2xlarge":  15,
	"r4.4xlarge":  30,
	"r4.8xlarge":  30,
	"r4.16xlarge": 50,
	"t1.micro":    2,
	"t2.nano":     2,
	"t2.micro":    2,
	"t2.small":    4,
	"t2.medium":   6,
	"t2.large":    12,
	"t2.xlarge":   15,
	"t2.2xlarge":  15,
	"x1.16xlarge": 30,
	"x1.32xlarge": 30,
}

InstanceIPsAvailable contains a mapping of instance types to the number of IPs per ENI https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#AvailableIpPerENI

Functions

This section is empty.

Types

type APIs 

type APIs interface {
	// AllocENI creates an eni and attaches it to instance
	AllocENI() (eni string, err error)

	// FreeENI detaches eni interface and deletes it
	FreeENI(eniName string) error

	// GetAttachedENIs retrieves eni information from instance metadata service
	GetAttachedENIs() (eniList []ENIMetadata, err error)

	// DescribeENI returns the IPv4 addresses of eni interface and eni attachment id
	DescribeENI(eniID string) (addrList []*ec2.NetworkInterfacePrivateIpAddress, attachemdID *string, err error)

	// AllocIPAddress allocates an ip address for an eni
	AllocIPAddress(eniID string) error

	// AllocAllIPAddress allocates all ip addresses available on an eni
	AllocAllIPAddress(eniID string) error

	// GetVPCIPv4CIDR returns vpc's cidr
	GetVPCIPv4CIDR() string

	// GetLocalIPv4 returns the primary IP address on the primary eni interface
	GetLocalIPv4() string

	// GetPrimaryENI returns the primary eni
	GetPrimaryENI() string

	// GetENIipLimit returns the number IP address can be allocated on a ENI
	GetENIipLimit() (int64, error)

	// GetENILimit returns the number of enis can be attached to an instance
	GetENILimit() (int, error)
}

APIs defines interfaces calls for adding/getting/deleting ENIs/secondary IPs. The APIs are not thread-safe.

type EC2InstanceMetadataCache 

type EC2InstanceMetadataCache struct {
	// contains filtered or unexported fields
}

EC2InstanceMetadataCache caches instance metadata

func New 

func New() (*EC2InstanceMetadataCache, error)

New creates an EC2InstanceMetadataCache

func (*EC2InstanceMetadataCache) AllocAllIPAddress 

func (cache *EC2InstanceMetadataCache) AllocAllIPAddress(eniID string) error

AllocAllIPAddress allocates all IP addresses available on eni

func (*EC2InstanceMetadataCache) AllocENI 

func (cache *EC2InstanceMetadataCache) AllocENI() (string, error)

AllocENI creates an eni and attach it to the instance returns: newly created eni id

func (*EC2InstanceMetadataCache) AllocIPAddress 

func (cache *EC2InstanceMetadataCache) AllocIPAddress(eniID string) error

AllocIPAddress allocates an IP address for an ENI

func (*EC2InstanceMetadataCache) DescribeENI 

func (cache *EC2InstanceMetadataCache) DescribeENI(eniID string) ([]*ec2.NetworkInterfacePrivateIpAddress, *string, error)

DescribeENI returns the IPv4 addresses of interface and the attachment id return: private IP address, attachment id, error

func (*EC2InstanceMetadataCache) FreeENI 

func (cache *EC2InstanceMetadataCache) FreeENI(eniName string) error

FreeENI detachs ENI interface and delete ENI interface

func (*EC2InstanceMetadataCache) GetAttachedENIs 

func (cache *EC2InstanceMetadataCache) GetAttachedENIs() (eniList []ENIMetadata, err error)

GetAttachedENIs retrieves ENI information from meta data service

func (*EC2InstanceMetadataCache) GetENILimit 

func (cache *EC2InstanceMetadataCache) GetENILimit() (int, error)

GetENILimit returns the number of enis can be attached to an instance

func (*EC2InstanceMetadataCache) GetENIipLimit 

func (cache *EC2InstanceMetadataCache) GetENIipLimit() (int64, error)

GetENIipLimit return IP address limit per ENI based on EC2 instance type

func (*EC2InstanceMetadataCache) GetLocalIPv4 

func (cache *EC2InstanceMetadataCache) GetLocalIPv4() string

GetLocalIPv4 returns the primary IP address on the primary interface

func (*EC2InstanceMetadataCache) GetPrimaryENI 

func (cache *EC2InstanceMetadataCache) GetPrimaryENI() string

GetPrimaryENI returns the primary ENI

func (*EC2InstanceMetadataCache) GetVPCIPv4CIDR 

func (cache *EC2InstanceMetadataCache) GetVPCIPv4CIDR() string

GetVPCIPv4CIDR returns VPC CIDR

type ENIMetadata 

type ENIMetadata struct {
	// ENIID is the id of network interface
	ENIID string

	// MAC is the mac address of network interface
	MAC string

	// DeviceNumber is the  device number of network interface
	DeviceNumber int64 // 0 means it is primary interface

	// SubnetIPv4CIDR is the ipv4 cider of network interface
	SubnetIPv4CIDR string

	// The ip addresses allocated for the network interface
	LocalIPv4s []string
}

ENIMetadata contains ENI information retrieved from EC2 meta data service

Source Files

View all Source files

Directories

Path Synopsis
Package mock_awsutils is a generated GoMock package.
 Package mock_awsutils is a generated GoMock package.

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