public abstract class PollingDataSourceBuilder extends java.lang.Object implements DataSourceFactory
Polling is not the default behavior; by default, the SDK uses a streaming connection to receive feature flag data from LaunchDarkly. In polling mode, the SDK instead makes a new HTTP request to LaunchDarkly at regular intervals. HTTP caching allows it to avoid redundantly downloading data if there have been no changes, but polling is still less efficient than streaming and should only be used on the advice of LaunchDarkly support.
To use polling mode, create a builder with Components.pollingDataSource()
,
change its properties with the methods of this class, and pass it to LDConfig.Builder.dataSource(DataSourceFactory)
:
LDConfig config = new LDConfig.Builder()
.dataSource(Components.pollingDataSource().pollIntervalMillis(45000))
.build();
Note that this class is abstract; the actual implementation is created by calling Components.pollingDataSource()
.
Modifier and Type | Field and Description |
---|---|
protected java.net.URI |
baseURI |
static java.time.Duration |
DEFAULT_POLL_INTERVAL
The default and minimum value for
pollInterval(Duration) : 30 seconds. |
protected java.time.Duration |
pollInterval |
Constructor and Description |
---|
PollingDataSourceBuilder() |
Modifier and Type | Method and Description |
---|---|
PollingDataSourceBuilder |
baseURI(java.net.URI baseURI)
Sets a custom base URI for the polling service.
|
PollingDataSourceBuilder |
pollInterval(java.time.Duration pollInterval)
Sets the interval at which the SDK will poll for feature flag updates.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
createDataSource
public static final java.time.Duration DEFAULT_POLL_INTERVAL
pollInterval(Duration)
: 30 seconds.protected java.net.URI baseURI
protected java.time.Duration pollInterval
public PollingDataSourceBuilder baseURI(java.net.URI baseURI)
You will only need to change this value in the following cases:
streamUri
to the base URI of the Relay Proxy instance.
baseURI
- the base URI of the polling service; null to use the defaultpublic PollingDataSourceBuilder pollInterval(java.time.Duration pollInterval)
The default and minimum value is DEFAULT_POLL_INTERVAL
. Values less than this will be
set to the default.
pollInterval
- the polling interval; null to use the default