com.netflix.hollow.api.client

Class HollowAnnouncementWatcher

java.lang.Object

com.netflix.hollow.api.client.HollowAnnouncementWatcher

Direct Known Subclasses:

HollowAnnouncementWatcher.DefaultWatcher

Deprecated.

Implement the HollowConsumer.AnnouncementWatcher for use with the HollowConsumer instead.

@Deprecated
public abstract class HollowAnnouncementWatcher
extends java.lang.Object

Implementations of this class are responsible for two things: 1) Tracking the latest announced data state version. 2) Keeping the client up to date by calling triggerAsyncRefresh() on self when the latest version changes. A default implementation HollowAnnouncementWatcher.DefaultWatcher is available. If this implementation is used, calling HollowClient.triggerRefresh() will always attempt to get to the latest state, unless an explicit state was specified via HollowClient.triggerRefreshTo(long).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HollowAnnouncementWatcher.DefaultWatcher Deprecated.

Constructor Summary

Constructors

Constructor and Description
HollowAnnouncementWatcher() Deprecated. Construct a HollowAnnouncementWatcher with a default ExecutorService.
HollowAnnouncementWatcher(java.util.concurrent.ExecutorService refreshExecutor) Deprecated. Construct a HollowAnnouncementWatcher with the specified ExecutorService.

Method Summary

Modifier and Type	Method and Description
protected void	forceDoubleSnapshotNextUpdate() Deprecated. Will force a double snapshot refresh on the next update.
protected HollowClient	getClientToNotify() Deprecated.
abstract long	getLatestVersion() Deprecated.
void	setLatestVersion(long latestVersion) Deprecated. Override this method ONLY if it is legal to explicitly update to a specific version.
abstract void	subscribeToEvents() Deprecated. If some push announcement mechanism is to be provided by this HollowAnnouncementWatcher, subscribe here.
void	triggerAsyncRefresh() Deprecated. Triggers a refresh in a new thread immediately.
void	triggerAsyncRefreshWithDelay(int delayMillis) Deprecated. Triggers async refresh after the specified number of milliseconds has passed.
void	triggerAsyncRefreshWithRandomDelay(int maxDelayMillis) Deprecated. Triggers async refresh after some random number of milliseconds have passed, between now and the specified maximum number of milliseconds.

Methods inherited from class java.lang.Object

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

Constructor Detail

HollowAnnouncementWatcher

public HollowAnnouncementWatcher()

Deprecated.

Construct a HollowAnnouncementWatcher with a default ExecutorService.

HollowAnnouncementWatcher

public HollowAnnouncementWatcher(java.util.concurrent.ExecutorService refreshExecutor)

Deprecated.

Construct a HollowAnnouncementWatcher with the specified ExecutorService.

Parameters:

refreshExecutor - the ExecutorService to use for asynchronous state refresh.

Method Detail

getLatestVersion

public abstract long getLatestVersion()

Deprecated.

Returns:

the latest announced version.

subscribeToEvents

public abstract void subscribeToEvents()

Deprecated.

If some push announcement mechanism is to be provided by this HollowAnnouncementWatcher, subscribe here. Alternatively, if some polling announcement mechanism is to be provided, setup the polling cycle here. When announcements are received, or polling reveals a new version, a call should be placed to triggerRefresh().

setLatestVersion

public void setLatestVersion(long latestVersion)

Deprecated.

Override this method ONLY if it is legal to explicitly update to a specific version.

Parameters:

latestVersion - the latest version

forceDoubleSnapshotNextUpdate

protected void forceDoubleSnapshotNextUpdate()

Deprecated.

Will force a double snapshot refresh on the next update.

triggerAsyncRefresh

public void triggerAsyncRefresh()

Deprecated.

Triggers a refresh in a new thread immediately.

triggerAsyncRefreshWithRandomDelay

public void triggerAsyncRefreshWithRandomDelay(int maxDelayMillis)

Deprecated.

Triggers async refresh after some random number of milliseconds have passed, between now and the specified maximum number of milliseconds. Any subsequent calls for async refresh will not begin until after the specified delay has completed.

Parameters:

maxDelayMillis - the maximum delay in milliseconds

triggerAsyncRefreshWithDelay

public void triggerAsyncRefreshWithDelay(int delayMillis)

Deprecated.

Triggers async refresh after the specified number of milliseconds has passed. Any subsequent calls for async refresh will not begin until after the specified delay has completed.

Parameters:

delayMillis - the delay in milliseconds

getClientToNotify

protected HollowClient getClientToNotify()

Deprecated.