Class PollingDataSourceBuilder

Contains methods for configuring the polling data source.

Inheritance
object
PollingDataSourceBuilder
Implements
Inherited Members
Namespace: LaunchDarkly.Sdk.Server.Integrations
Assembly: LaunchDarkly.ServerSdk.dll
Syntax
public sealed class PollingDataSourceBuilder : IComponentConfigurer<IDataSource>, IDiagnosticDescription
Remarks

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 PollingDataSource(), change its properties with the methods of this class, and pass it to DataSource(IComponentConfigurer<IDataSource>).

Setting Offline(bool) to true will supersede this setting and completely disable network requests.

Examples
var config = Configuration.Builder(sdkKey)
    .DataSource(Components.PollingDataSource()
        .PollInterval(TimeSpan.FromSeconds(45)))
    .Build();

Constructors

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PollingDataSourceBuilder()

Declaration
public PollingDataSourceBuilder()

Fields

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DefaultPollInterval

The default value for PollInterval(TimeSpan): 30 seconds.

Declaration
public static readonly TimeSpan DefaultPollInterval
Field Value
Type Description
TimeSpan

Methods

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Build(LdClientContext)

Called internally by the SDK to create an implementation instance. Applications should not need to call this method.

Declaration
public IDataSource Build(LdClientContext context)
Parameters
Type Name Description
LdClientContext context

provides configuration properties and other components from the current SDK client instance
Returns
Type Description
IDataSource

a instance of the component type
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DescribeConfiguration(LdClientContext)

Called internally by the SDK to inspect the configuration. Applications do not need to call this method.

Declaration
public LdValue DescribeConfiguration(LdClientContext context)
Parameters
Type Name Description
LdClientContext context

SDK configuration/component information
Returns
Type Description
LdValue

a JSON value
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PollInterval(TimeSpan)

Sets the interval at which the SDK will poll for feature flag updates.

Declaration
public PollingDataSourceBuilder PollInterval(TimeSpan pollInterval)
Parameters
Type Name Description
TimeSpan pollInterval

the polling interval
Returns
Type Description
PollingDataSourceBuilder

the builder
Remarks

The default and minimum value is DefaultPollInterval. Values less than this will be set to the default.

Implements