instances

Documentation

Index

• func EnsureInstanceGroupsAndPorts(nodePool NodePool, namer *utils.Namer, ports []int64) ([]*compute.InstanceGroup, error)
• type FakeInstanceGroups
  • func NewFakeInstanceGroups(nodes sets.String, namer *utils.Namer) *FakeInstanceGroups
  • func (f *FakeInstanceGroups) AddInstancesToInstanceGroup(name, zone string, instanceRefs []*compute.InstanceReference) error
  • func (f *FakeInstanceGroups) CreateInstanceGroup(ig *compute.InstanceGroup, zone string) error
  • func (f *FakeInstanceGroups) DeleteInstanceGroup(name, zone string) error
  • func (f *FakeInstanceGroups) GetInstanceGroup(name, zone string) (*compute.InstanceGroup, error)
  • func (f *FakeInstanceGroups) GetInstancesByZone() map[string][]string
  • func (f *FakeInstanceGroups) ListInstancesInInstanceGroup(name, zone string, state string) ([]*compute.InstanceWithNamedPorts, error)
  • func (f *FakeInstanceGroups) RemoveInstancesFromInstanceGroup(name, zone string, instanceRefs []*compute.InstanceReference) error
  • func (f *FakeInstanceGroups) SetNamedPortsOfInstanceGroup(igName, zone string, namedPorts []*compute.NamedPort) error
  • func (f *FakeInstanceGroups) ToInstanceReferences(zone string, instanceNames []string) (refs []*compute.InstanceReference)
• type FakeZoneLister
  • func (z *FakeZoneLister) GetZoneForNode(name string) (string, error)
  • func (z *FakeZoneLister) ListZones() ([]string, error)
• type InstanceGroups
• type Instances
  • func (i *Instances) Add(groupName string, names []string) error
  • func (i *Instances) DeleteInstanceGroup(name string) error
  • func (i *Instances) EnsureInstanceGroupsAndPorts(name string, ports []int64) (igs []*compute.InstanceGroup, err error)
  • func (i *Instances) Get(name, zone string) (*compute.InstanceGroup, error)
  • func (i *Instances) Init(zl ZoneLister)
  • func (i *Instances) Remove(groupName string, names []string) error
  • func (i *Instances) Sync(nodes []string) (err error)
• type NodePool
  • func NewNodePool(cloud InstanceGroups, namer *utils.Namer) NodePool
• type ZoneLister

Functions

func EnsureInstanceGroupsAndPorts

func EnsureInstanceGroupsAndPorts(nodePool NodePool, namer *utils.Namer, ports []int64) ([]*compute.InstanceGroup, error)

Helper method to create instance groups. This method exists to ensure that we are using the same logic at all places.

Types

type FakeInstanceGroups

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

FakeInstanceGroups fakes out the instance groups api.

func NewFakeInstanceGroups

func NewFakeInstanceGroups(nodes sets.String, namer *utils.Namer) *FakeInstanceGroups

NewFakeInstanceGroups creates a new FakeInstanceGroups.

func (*FakeInstanceGroups) AddInstancesToInstanceGroup

func (f *FakeInstanceGroups) AddInstancesToInstanceGroup(name, zone string, instanceRefs []*compute.InstanceReference) error

AddInstancesToInstanceGroup fakes adding instances to an instance group.

func (*FakeInstanceGroups) CreateInstanceGroup

func (f *FakeInstanceGroups) CreateInstanceGroup(ig *compute.InstanceGroup, zone string) error

CreateInstanceGroup fakes instance group creation.

func (*FakeInstanceGroups) DeleteInstanceGroup

func (f *FakeInstanceGroups) DeleteInstanceGroup(name, zone string) error

DeleteInstanceGroup fakes instance group deletion.

func (*FakeInstanceGroups) GetInstanceGroup

func (f *FakeInstanceGroups) GetInstanceGroup(name, zone string) (*compute.InstanceGroup, error)

GetInstanceGroup fakes getting an instance group from the cloud.

func (*FakeInstanceGroups) GetInstancesByZone

func (f *FakeInstanceGroups) GetInstancesByZone() map[string][]string

GetInstancesByZone returns the zone to instances map.

func (*FakeInstanceGroups) ListInstancesInInstanceGroup

func (f *FakeInstanceGroups) ListInstancesInInstanceGroup(name, zone string, state string) ([]*compute.InstanceWithNamedPorts, error)

ListInstancesInInstanceGroup fakes listing instances in an instance group.

func (*FakeInstanceGroups) RemoveInstancesFromInstanceGroup

func (f *FakeInstanceGroups) RemoveInstancesFromInstanceGroup(name, zone string, instanceRefs []*compute.InstanceReference) error

RemoveInstancesFromInstanceGroup fakes removing instances from an instance group.

func (*FakeInstanceGroups) SetNamedPortsOfInstanceGroup

func (f *FakeInstanceGroups) SetNamedPortsOfInstanceGroup(igName, zone string, namedPorts []*compute.NamedPort) error

func (*FakeInstanceGroups) ToInstanceReferences

func (f *FakeInstanceGroups) ToInstanceReferences(zone string, instanceNames []string) (refs []*compute.InstanceReference)

type FakeZoneLister

type FakeZoneLister struct {
	Zones []string
}

FakeZoneLister records zones for nodes.

func (*FakeZoneLister) GetZoneForNode

func (z *FakeZoneLister) GetZoneForNode(name string) (string, error)

GetZoneForNode returns the only zone stored in the fake zone lister.

func (*FakeZoneLister) ListZones

func (z *FakeZoneLister) ListZones() ([]string, error)

ListZones returns the list of zones.

type InstanceGroups

type InstanceGroups interface {
	GetInstanceGroup(name, zone string) (*compute.InstanceGroup, error)
	CreateInstanceGroup(ig *compute.InstanceGroup, zone string) error
	DeleteInstanceGroup(name, zone string) error

	// TODO: Refactor for modulatiry.
	ListInstancesInInstanceGroup(name, zone string, state string) ([]*compute.InstanceWithNamedPorts, error)
	AddInstancesToInstanceGroup(name, zone string, instanceRefs []*compute.InstanceReference) error
	RemoveInstancesFromInstanceGroup(name, zone string, instanceRefs []*compute.InstanceReference) error
	ToInstanceReferences(zone string, instanceNames []string) (refs []*compute.InstanceReference)
	SetNamedPortsOfInstanceGroup(igName, zone string, namedPorts []*compute.NamedPort) error
}

InstanceGroups is an interface for managing gce instances groups, and the instances therein.

type Instances

type Instances struct {
	ZoneLister
	// contains filtered or unexported fields
}

Instances implements NodePool.

func (*Instances) Add

func (i *Instances) Add(groupName string, names []string) error

Add adds the given instances to the appropriately zoned Instance Group.

func (*Instances) DeleteInstanceGroup

func (i *Instances) DeleteInstanceGroup(name string) error

DeleteInstanceGroup deletes the given IG by name, from all zones.

func (*Instances) EnsureInstanceGroupsAndPorts

func (i *Instances) EnsureInstanceGroupsAndPorts(name string, ports []int64) (igs []*compute.InstanceGroup, err error)

EnsureInstanceGroupsAndPorts creates or gets an instance group if it doesn't exist and adds the given ports to it. Returns a list of one instance group per zone, all of which have the exact same named ports.

func (*Instances) Get

func (i *Instances) Get(name, zone string) (*compute.InstanceGroup, error)

Get returns the Instance Group by name.

func (*Instances) Init

func (i *Instances) Init(zl ZoneLister)

Init initializes the instance pool. The given zoneLister is used to list all zones that require an instance group, and to lookup which zone a given Kubernetes node is in so we can add it to the right instance group.

func (*Instances) Remove

func (i *Instances) Remove(groupName string, names []string) error

Remove removes the given instances from the appropriately zoned Instance Group.

func (*Instances) Sync

func (i *Instances) Sync(nodes []string) (err error)

Sync syncs kubernetes instances with the instances in the instance group.

type NodePool

type NodePool interface {
	Init(zl ZoneLister)

	// The following 2 methods operate on instance groups.
	EnsureInstanceGroupsAndPorts(name string, ports []int64) ([]*compute.InstanceGroup, error)
	DeleteInstanceGroup(name string) error

	// TODO: Refactor for modularity
	Add(groupName string, nodeNames []string) error
	Remove(groupName string, nodeNames []string) error
	Sync(nodeNames []string) error
	Get(name, zone string) (*compute.InstanceGroup, error)
}

NodePool is an interface to manage a pool of kubernetes nodes synced with vm instances in the cloud through the InstanceGroups interface. It handles zones opaquely using the zoneLister.

func NewNodePool

func NewNodePool(cloud InstanceGroups, namer *utils.Namer) NodePool

NewNodePool creates a new node pool.

• cloud: implements InstanceGroups, used to sync Kubernetes nodes with members of the cloud InstanceGroup.

type ZoneLister

type ZoneLister interface {
	ListZones() ([]string, error)
	GetZoneForNode(name string) (string, error)
}

zoneLister manages lookups for GCE instance groups/instances to zones.