node

package
v1.4.0-alpha.2 Latest Latest
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 Go to latest Published: Jul 29, 2016 License: Apache-2.0 Imports: 37 Imported by: 0

Documentation

Overview

Package node contains code for syncing cloud instances with node registry

Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrCloudInstance = errors.New("cloud provider doesn't support instances.")
)

Functions

func ComputeZoneState 

func ComputeZoneState(nodeReadyConditions []*api.NodeCondition) zoneState

This function is expected to get a slice of NodeReadyConditions for all Nodes in a given zone.

Types

type ActionFunc 

type ActionFunc func(TimedValue) (bool, time.Duration)

ActionFunc takes a timed value and returns false if the item must be retried, with an optional time.Duration if some minimum wait interval should be used.

type CIDRAllocator added in v1.3.0 

type CIDRAllocator interface {
	AllocateOrOccupyCIDR(node *api.Node) error
	ReleaseCIDR(node *api.Node) error
}

CIDRAllocator is an interface implemented by things that know how to allocate/occupy/recycle CIDR for nodes.

func NewCIDRRangeAllocator added in v1.3.0 

func NewCIDRRangeAllocator(client clientset.Interface, clusterCIDR *net.IPNet, serviceCIDR *net.IPNet, subNetMaskSize int, nodeList *api.NodeList) (CIDRAllocator, error)

NewCIDRRangeAllocator returns a CIDRAllocator to allocate CIDR for node Caller must ensure subNetMaskSize is not less than cluster CIDR mask size. Caller must always pass in a list of existing nodes so the new allocator can initialize its CIDR map. NodeList is only nil in testing.

type FakeLegacyHandler added in v1.3.2 

type FakeLegacyHandler struct {
	unversionedcore.CoreInterface
	// contains filtered or unexported fields
}

func (*FakeLegacyHandler) Nodes added in v1.3.2 

func (m *FakeLegacyHandler) Nodes() unversionedcore.NodeInterface

type FakeNodeHandler added in v1.3.2 

type FakeNodeHandler struct {
	*fake.Clientset

	// Input: Hooks determine if request is valid or not
	CreateHook func(*FakeNodeHandler, *api.Node) bool
	Existing   []*api.Node

	// Output
	CreatedNodes        []*api.Node
	DeletedNodes        []*api.Node
	UpdatedNodes        []*api.Node
	UpdatedNodeStatuses []*api.Node
	RequestCount        int
	// contains filtered or unexported fields
}

FakeNodeHandler is a fake implementation of NodesInterface and NodeInterface. It allows test cases to have fine-grained control over mock behaviors. We also need PodsInterface and PodInterface to test list & delet pods, which is implemented in the embedded client.Fake field.

func (*FakeNodeHandler) Core added in v1.3.2 

func (c *FakeNodeHandler) Core() unversionedcore.CoreInterface

func (*FakeNodeHandler) Create added in v1.3.2 

func (m *FakeNodeHandler) Create(node *api.Node) (*api.Node, error)

func (*FakeNodeHandler) Delete added in v1.3.2 

func (m *FakeNodeHandler) Delete(id string, opt *api.DeleteOptions) error

func (*FakeNodeHandler) DeleteCollection added in v1.3.2 

func (m *FakeNodeHandler) DeleteCollection(opt *api.DeleteOptions, listOpts api.ListOptions) error

func (*FakeNodeHandler) Get added in v1.3.2 

func (m *FakeNodeHandler) Get(name string) (*api.Node, error)

func (*FakeNodeHandler) List added in v1.3.2 

func (m *FakeNodeHandler) List(opts api.ListOptions) (*api.NodeList, error)

func (*FakeNodeHandler) Patch added in v1.3.2 

func (m *FakeNodeHandler) Patch(name string, pt api.PatchType, data []byte, subresources ...string) (*api.Node, error)

func (*FakeNodeHandler) PatchStatus added in v1.3.2 

func (m *FakeNodeHandler) PatchStatus(nodeName string, data []byte) (*api.Node, error)

func (*FakeNodeHandler) Update added in v1.3.2 

func (m *FakeNodeHandler) Update(node *api.Node) (*api.Node, error)

func (*FakeNodeHandler) UpdateStatus added in v1.3.2 

func (m *FakeNodeHandler) UpdateStatus(node *api.Node) (*api.Node, error)

func (*FakeNodeHandler) Watch added in v1.3.2 

func (m *FakeNodeHandler) Watch(opts api.ListOptions) (watch.Interface, error)

type NodeController 

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

func NewNodeController 

func NewNodeController(
	cloud cloudprovider.Interface,
	kubeClient clientset.Interface,
	podEvictionTimeout time.Duration,
	evictionLimiterQPS float32,
	nodeMonitorGracePeriod time.Duration,
	nodeStartupGracePeriod time.Duration,
	nodeMonitorPeriod time.Duration,
	clusterCIDR *net.IPNet,
	serviceCIDR *net.IPNet,
	nodeCIDRMaskSize int,
	allocateNodeCIDRs bool) (*NodeController, error)

NewNodeController returns a new node controller to sync instances from cloudprovider. This method returns an error if it is unable to initialize the CIDR bitmap with podCIDRs it has already allocated to nodes. Since we don't allow podCIDR changes currently, this should be handled as a fatal error.

func (*NodeController) Run 

func (nc *NodeController) Run(period time.Duration)

Run starts an asynchronous loop that monitors the status of cluster nodes.

type RateLimitedTimedQueue 

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

RateLimitedTimedQueue is a unique item priority queue ordered by the expected next time of execution. It is also rate limited.

func NewRateLimitedTimedQueue 

func NewRateLimitedTimedQueue(limiter flowcontrol.RateLimiter) *RateLimitedTimedQueue

Creates new queue which will use given RateLimiter to oversee execution.

func (*RateLimitedTimedQueue) Add 

func (q *RateLimitedTimedQueue) Add(value string) bool

Adds value to the queue to be processed. Won't add the same value a second time if it was already added and not removed.

func (*RateLimitedTimedQueue) Clear added in v1.3.0 

func (q *RateLimitedTimedQueue) Clear()

Removes all items from the queue

func (*RateLimitedTimedQueue) Remove 

func (q *RateLimitedTimedQueue) Remove(value string) bool

Removes Node from the Evictor. The Node won't be processed until added again.

func (*RateLimitedTimedQueue) SwapLimiter added in v1.4.0 

func (q *RateLimitedTimedQueue) SwapLimiter(newQPS float32)

SwapLimiter safely swaps current limiter for this queue with the passed one if capacities or qps's differ.

func (*RateLimitedTimedQueue) Try 

func (q *RateLimitedTimedQueue) Try(fn ActionFunc)

Try processes the queue. Ends prematurely if RateLimiter forbids an action and leak is true. Otherwise, requeues the item to be processed. Each value is processed once if fn returns true, otherwise it is added back to the queue. The returned remaining is used to identify the minimum time to execute the next item in the queue.

type TimedQueue 

type TimedQueue []*TimedValue

TimedQueue is a priority heap where the lowest ProcessAt is at the front of the queue

func (TimedQueue) Len 

func (h TimedQueue) Len() int

func (TimedQueue) Less 

func (h TimedQueue) Less(i, j int) bool

func (*TimedQueue) Pop 

func (h *TimedQueue) Pop() interface{}

func (*TimedQueue) Push 

func (h *TimedQueue) Push(x interface{})

func (TimedQueue) Swap 

func (h TimedQueue) Swap(i, j int)

type TimedValue 

type TimedValue struct {
	Value     string
	AddedAt   time.Time
	ProcessAt time.Time
}

TimedValue is a value that should be processed at a designated time.

type UniqueQueue 

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

A FIFO queue which additionally guarantees that any element can be added only once until it is removed.

func (*UniqueQueue) Add 

func (q *UniqueQueue) Add(value TimedValue) bool

Adds a new value to the queue if it wasn't added before, or was explicitly removed by the Remove call. Returns true if new value was added.

func (*UniqueQueue) Clear added in v1.3.0 

func (q *UniqueQueue) Clear()

Clear removes all items from the queue and duplication preventing set.

func (*UniqueQueue) Get 

func (q *UniqueQueue) Get() (TimedValue, bool)

Returns the oldest added value that wasn't returned yet.

func (*UniqueQueue) Head 

func (q *UniqueQueue) Head() (TimedValue, bool)

Head returns the oldest added value that wasn't returned yet without removing it.

func (*UniqueQueue) Remove 

func (q *UniqueQueue) Remove(value string) bool

Removes the value from the queue, so Get() call won't return it, and allow subsequent addition of the given value. If the value is not present does nothing and returns false.

func (*UniqueQueue) Replace 

func (q *UniqueQueue) Replace(value TimedValue) bool

Replace replaces an existing value in the queue if it already exists, otherwise it does nothing. Returns true if the item was found.

Source Files

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