utils

Documentation

Index

• type DockerClient
• type IPTabler
• type PortMapping
• type Utils
  • func NewUtils(ipt IPTabler, cli DockerClient) (*Utils, error)
  • func (u *Utils) AddNatPreroutingRule(mapping PortMapping) error
  • func (*Utils) ComparePortMappings(dockerMapping, rulesMapping []PortMapping) ([]PortMapping, []PortMapping)
  • func (u *Utils) RemoveNatPreroutingRule(mapping PortMapping) error
  • func (u *Utils) RetrieveDockerPortMapping() ([]PortMapping, error)
  • func (u *Utils) RetrieveNatMapping() []PortMapping

Types

type DockerClient

type DockerClient interface {
	ContainerList(ctx context.Context, options container.ListOptions) ([]types.Container, error)
}

type IPTabler

type IPTabler interface {
	AppendUnique(table, chain string, rulespec ...string) error
	List(table, chain string) ([]string, error)
	Delete(table, chain string, rulespec ...string) error
}

type PortMapping

type PortMapping struct {
	BridgeIP    string
	IP          string
	PublicPort  uint16
	PrivatePort uint16
}

type Utils

type Utils struct {
	IPTables     IPTabler
	DockerClient DockerClient
}

func NewUtils

func NewUtils(
	ipt IPTabler,
	cli DockerClient,
) (*Utils, error)

func (*Utils) AddNatPreroutingRule

func (u *Utils) AddNatPreroutingRule(mapping PortMapping) error

func (*Utils) ComparePortMappings

func (*Utils) ComparePortMappings(dockerMapping, rulesMapping []PortMapping) ([]PortMapping, []PortMapping)

ComparePortMappings compares the port mappings retrieved from the Docker API with the NAT rules and returns the rules that need to be added and removed

func (*Utils) RemoveNatPreroutingRule

func (u *Utils) RemoveNatPreroutingRule(mapping PortMapping) error

func (*Utils) RetrieveDockerPortMapping

func (u *Utils) RetrieveDockerPortMapping() ([]PortMapping, error)

func (*Utils) RetrieveNatMapping

func (u *Utils) RetrieveNatMapping() []PortMapping