Package io.fabric8.kubernetes.client.informers.cache

Class DeltaFIFO<T>

java.lang.Object

io.fabric8.kubernetes.client.informers.cache.DeltaFIFO<T>

All Implemented Interfaces:

Store<Object>

public class DeltaFIFO<T>
extends Object
implements Store<Object>

The DeltaFIFO inherits from an Object queue since that we're actually reading from it as Deltas but writing it as Kubernetes object. This is taken from official client: https://github.com/kubernetes-client/java/blob/master/util/src/main/java/io/kubernetes/client/informer/cache/DeltaFIFO.java which is ported from official go client: https://github.com/kubernetes/client-go/blob/master/tools/cache/delta_fifo.go

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DeltaFIFO.DeletedFinalStateUnknown<T>	DeletedFinalStateUnknown is placed into a DeltaFIFO in the case where an object was deleted but the watch deletion event was missed.
static class	DeltaFIFO.DeltaType

Constructor Summary

Constructors

Constructor	Description
DeltaFIFO(Function<T,String> keyFunc, Store knownObjects)

Method Summary

Modifier and Type	Method	Description
void	add(Object obj)	Add items to the delta FIFO.
void	delete(Object obj)	Delete items from the delta FIFO
Object	get(Object obj)	Get object
Deque<AbstractMap.SimpleEntry<DeltaFIFO.DeltaType,Object>>	getByKey(String key)	Gets by key
boolean	hasSynced()	Has synced boolean
void	isPopulated(boolean isPopulated)	Updates the status of cache in case of any API error from Kubernetes server
List<Object>	list()	List objects
List<String>	listKeys()	List keys list.
Deque<AbstractMap.SimpleEntry<DeltaFIFO.DeltaType,Object>>	pop(Consumer<Deque<AbstractMap.SimpleEntry<DeltaFIFO.DeltaType,Object>>> func)	Pop Deltas
void	replace(List list, String resourceVersion)	Replace the item forcibly.
void	resync()	Resync the delta FIFO.
void	update(Object obj)	Update items in delta FIFO

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DeltaFIFO

public DeltaFIFO(Function<T,String> keyFunc, Store knownObjects)

Method Details

add

public void add(Object obj)

Add items to the delta FIFO.

Specified by:

add in interface Store<T>

Parameters:

obj - object

update

public void update(Object obj)

Update items in delta FIFO

Specified by:

update in interface Store<T>

Parameters:

obj - object

delete

public void delete(Object obj)

Delete items from the delta FIFO

Specified by:

delete in interface Store<T>

Parameters:

obj - object

replace

public void replace(List list, String resourceVersion)

Replace the item forcibly.

Specified by:

replace in interface Store<T>

Parameters:

list - list of objects

resourceVersion - resource version

resync

public void resync()

Resync the delta FIFO. First, it locks the queue to block any more write operation until it finishes all the pending items in the queue.

Specified by:

resync in interface Store<T>

listKeys

public List<String> listKeys()

List keys list.

Specified by:

listKeys in interface Store<T>

Returns:

the list

get

public Object get(Object obj)

Get object

Specified by:

get in interface Store<T>

Parameters:

obj - the object

Returns:

the object

getByKey

public Deque<AbstractMap.SimpleEntry<DeltaFIFO.DeltaType,Object>> getByKey(String key)

Gets by key

Specified by:

getByKey in interface Store<T>

Parameters:

key - specific key

Returns:

the object

list

public List<Object> list()

List objects

Specified by:

list in interface Store<T>

Returns:

the list

pop

public Deque<AbstractMap.SimpleEntry<DeltaFIFO.DeltaType,Object>> pop(Consumer<Deque<AbstractMap.SimpleEntry<DeltaFIFO.DeltaType,Object>>> func) throws InterruptedException

Pop Deltas

Parameters:

func - the func

Returns:

the deltas

Throws:

InterruptedException - interruption exception

hasSynced

public boolean hasSynced()

Has synced boolean

Returns:

the boolean

isPopulated

public void isPopulated(boolean isPopulated)

Description copied from interface: Store

Updates the status of cache in case of any API error from Kubernetes server

Specified by:

isPopulated in interface Store<T>

Parameters:

isPopulated - boolean value indicating whether cache is populated or not