Package com.launchdarkly.sdk.server.interfaces

Interface DataSource

All Superinterfaces:

java.lang.AutoCloseable, java.io.Closeable

public interface DataSource
extends java.io.Closeable

Interface for an object that receives updates to feature flags, user segments, and anything else that might come from LaunchDarkly, and passes them to a DataStore.

The standard implementations are:

• Components.streamingDataSource() (the default), which maintains a streaming connection to LaunchDarkly;
• Components.pollingDataSource(), which polls for updates at regular intervals;
• Components.externalUpdatesOnly(), which does nothing (on the assumption that another process will update the data store);
• FileData, which reads flag data from the filesystem.

Since:

5.0.0

Method Summary

Modifier and Type	Method	Description
void	close()	Tells the component to shut down and release any resources it is using.
boolean	isInitialized()	Returns true once the client has been initialized and will never return false again.
java.util.concurrent.Future<java.lang.Void>	start()	Starts the client.

Method Details

start

java.util.concurrent.Future<java.lang.Void> start()

Starts the client.

Returns:

Future's completion status indicates the client has been initialized.

isInitialized

boolean isInitialized()

Returns true once the client has been initialized and will never return false again.

Returns:

true if the client has been initialized

close

void close() throws java.io.IOException

Tells the component to shut down and release any resources it is using.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException - if there is an error while closing