cloudprovider

Documentation

Overview

Package cloudprovider supplies interfaces and implementations for cloud service providers.

Index

• Variables
• func GetInstanceProviderID(cloud Interface, nodeName string) (string, error)
• func GetLoadBalancerName(service *api.Service) string
• func RegisterCloudProvider(name string, cloud Factory)
• type Clusters
• type Factory
• type Instances
• type Interface
  • func GetCloudProvider(name string, config io.Reader) (Interface, error)
  • func InitCloudProvider(name string, configFilePath string) (Interface, error)
• type Route
• type Routes
• type TCPLoadBalancer
• type Zone
• type Zones

Variables

var InstanceNotFound = errors.New("instance not found")

Functions

func GetInstanceProviderID

func GetInstanceProviderID(cloud Interface, nodeName string) (string, error)

func GetLoadBalancerName

func GetLoadBalancerName(service *api.Service) string

TODO(#6812): Use a shorter name that's less likely to be longer than cloud providers' name length limits.

func RegisterCloudProvider

func RegisterCloudProvider(name string, cloud Factory)

RegisterCloudProvider registers a cloudprovider.Factory by name. This is expected to happen during app startup.

Types

type Clusters

type Clusters interface {
	// List lists the names of the available clusters.
	ListClusters() ([]string, error)
	// Master gets back the address (either DNS name or IP address) of the master node for the cluster.
	Master(clusterName string) (string, error)
}

Clusters is an abstract, pluggable interface for clusters of containers.

type Factory

type Factory func(config io.Reader) (Interface, error)

Factory is a function that returns a cloudprovider.Interface. The config parameter provides an io.Reader handler to the factory in order to load specific configurations. If no configuration is provided the parameter is nil.

type Instances

type Instances interface {
	// NodeAddresses returns the addresses of the specified instance.
	// TODO(roberthbailey): This currently is only used in such a way that it
	// returns the address of the calling instance. We should do a rename to
	// make this clearer.
	NodeAddresses(name string) ([]api.NodeAddress, error)
	// ExternalID returns the cloud provider ID of the specified instance (deprecated).
	ExternalID(name string) (string, error)
	// InstanceID returns the cloud provider ID of the specified instance.
	// Note that if the instance does not exist or is no longer running, we must return ("", cloudprovider.InstanceNotFound)
	InstanceID(name string) (string, error)
	// List lists instances that match 'filter' which is a regular expression which must match the entire instance name (fqdn)
	List(filter string) ([]string, error)
	// AddSSHKeyToAllInstances adds an SSH public key as a legal identity for all instances
	// expected format for the key is standard ssh-keygen format: <protocol> <blob>
	AddSSHKeyToAllInstances(user string, keyData []byte) error
	// Returns the name of the node we are currently running on
	// On most clouds (e.g. GCE) this is the hostname, so we provide the hostname
	CurrentNodeName(hostname string) (string, error)
}

Instances is an abstract, pluggable interface for sets of instances.

type Interface

type Interface interface {
	// TCPLoadBalancer returns a balancer interface. Also returns true if the interface is supported, false otherwise.
	TCPLoadBalancer() (TCPLoadBalancer, bool)
	// Instances returns an instances interface. Also returns true if the interface is supported, false otherwise.
	Instances() (Instances, bool)
	// Zones returns a zones interface. Also returns true if the interface is supported, false otherwise.
	Zones() (Zones, bool)
	// Clusters returns a clusters interface.  Also returns true if the interface is supported, false otherwise.
	Clusters() (Clusters, bool)
	// Routes returns a routes interface along with whether the interface is supported.
	Routes() (Routes, bool)
	// ProviderName returns the cloud provider ID.
	ProviderName() string
	// ScrubDNS provides an opportunity for cloud-provider-specific code to process DNS settings for pods.
	ScrubDNS(nameservers, searches []string) (nsOut, srchOut []string)
}

Interface is an abstract, pluggable interface for cloud providers.

func GetCloudProvider

func GetCloudProvider(name string, config io.Reader) (Interface, error)

GetCloudProvider creates an instance of the named cloud provider, or nil if the name is not known. The error return is only used if the named provider was known but failed to initialize. The config parameter specifies the io.Reader handler of the configuration file for the cloud provider, or nil for no configuation.

func InitCloudProvider

func InitCloudProvider(name string, configFilePath string) (Interface, error)

InitCloudProvider creates an instance of the named cloud provider.

type Route

type Route struct {
	// Name is the name of the routing rule in the cloud-provider.
	// It will be ignored in a Create (although nameHint may influence it)
	Name string
	// TargetInstance is the name of the instance as specified in routing rules
	// for the cloud-provider (in gce: the Instance Name).
	TargetInstance string
	// Destination CIDR is the CIDR format IP range that this routing rule
	// applies to.
	DestinationCIDR string
}

Route is a representation of an advanced routing rule.

type Routes

type Routes interface {
	// List all managed routes that belong to the specified clusterName
	ListRoutes(clusterName string) ([]*Route, error)
	// Create the described managed route
	// route.Name will be ignored, although the cloud-provider may use nameHint
	// to create a more user-meaningful name.
	CreateRoute(clusterName string, nameHint string, route *Route) error
	// Delete the specified managed route
	// Route should be as returned by ListRoutes
	DeleteRoute(clusterName string, route *Route) error
}

Routes is an abstract, pluggable interface for advanced routing rules.

type TCPLoadBalancer

type TCPLoadBalancer interface {
	// TODO: Break this up into different interfaces (LB, etc) when we have more than one type of service
	// GetTCPLoadBalancer returns whether the specified load balancer exists, and
	// if so, what its status is.
	GetTCPLoadBalancer(name, region string) (status *api.LoadBalancerStatus, exists bool, err error)
	// EnsureTCPLoadBalancer creates a new tcp load balancer, or updates an existing one. Returns the status of the balancer
	EnsureTCPLoadBalancer(name, region string, loadBalancerIP net.IP, ports []*api.ServicePort, hosts []string, affinityType api.ServiceAffinity) (*api.LoadBalancerStatus, error)
	// UpdateTCPLoadBalancer updates hosts under the specified load balancer.
	UpdateTCPLoadBalancer(name, region string, hosts []string) error
	// EnsureTCPLoadBalancerDeleted deletes the specified load balancer if it
	// exists, returning nil if the load balancer specified either didn't exist or
	// was successfully deleted.
	// This construction is useful because many cloud providers' load balancers
	// have multiple underlying components, meaning a Get could say that the LB
	// doesn't exist even if some part of it is still laying around.
	EnsureTCPLoadBalancerDeleted(name, region string) error
}

TCPLoadBalancer is an abstract, pluggable interface for TCP load balancers.

type Zone

type Zone struct {
	FailureDomain string
	Region        string
}

Zone represents the location of a particular machine.

type Zones

type Zones interface {
	// GetZone returns the Zone containing the current failure zone and locality region that the program is running in
	GetZone() (Zone, error)
}

Zones is an abstract, pluggable interface for zone enumeration.