Class Components

Provides configurable factories for the standard implementations of LaunchDarkly component interfaces.

Inheritance
object
Components
Inherited Members
Namespace: LaunchDarkly.Sdk.Client
Assembly: LaunchDarkly.ClientSdk.dll
Syntax
public static class Components
Remarks

Some of the configuration options in ConfigurationBuilder affect the entire SDK, but others are specific to one area of functionality, such as how the SDK receives feature flag updates or processes analytics events. For the latter, the standard way to specify a configuration is to call one of the static methods in Components (such as StreamingDataSource()), apply any desired configuration change to the object that that method returns (such as InitialReconnectDelay(TimeSpan)), and then use the corresponding method in ConfigurationBuilder (such as DataSource(IComponentConfigurer<IDataSource>)) to use that configured component in the SDK.

Properties

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NoEvents

Returns a configuration object that disables analytics events.

Declaration
public static IComponentConfigurer<IEventProcessor> NoEvents { get; }
Property Value
Type Description
IComponentConfigurer<IEventProcessor>
Remarks

Passing this to Events(IComponentConfigurer<IEventProcessor>) causes the SDK to discard all analytics events and not send them to LaunchDarkly, regardless of any other configuration.

Examples
var config = Configuration.Builder(mobileKey)
    .Events(Components.NoEvents)
    .Build();
See Also
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NoLogging

A configuration object that disables logging.

Declaration
public static LoggingConfigurationBuilder NoLogging { get; }
Property Value
Type Description
LoggingConfigurationBuilder
Remarks

This is the same as Logging(LaunchDarkly.Logging.Logs.None).

Examples
var config = Configuration.Builder(mobileKey)
    .Logging(Components.NoLogging)
    .Build();
See Also
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NoPersistence

A configuration object that disables persistent storage.

Declaration
public static PersistenceConfigurationBuilder NoPersistence { get; }
Property Value
Type Description
PersistenceConfigurationBuilder
Remarks

This is equivalent to Persistence().MaxCachedUsers(0).

Examples
var config = Configuration.Builder(mobileKey)
    .Persistence(Components.NoPersistence)
    .Build();
See Also

Methods

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ApplicationInfo()

Returns a configurable builder for the SDK's application metadata.

Declaration
public static ApplicationInfoBuilder ApplicationInfo()
Returns
Type Description
ApplicationInfoBuilder

a configuration builder
Remarks

Passing this to ApplicationInfo(ApplicationInfoBuilder) after setting any desired properties on the builder, applies this configuration to the SDK.

Examples
var config = Configuration.Builder(mobileKey)
    .ApplicationInfo(
        Components.ApplicationInfo().ApplicationID("MyApplication").ApplicationVersion("version123abc")
    )
    .Build();
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HttpConfiguration()

Returns a configuration builder for the SDK's networking configuration.

Declaration
public static HttpConfigurationBuilder HttpConfiguration()
Returns
Type Description
HttpConfigurationBuilder

a builder
Remarks

Passing this to Http(HttpConfigurationBuilder) applies this configuration to all HTTP/HTTPS requests made by the SDK.

Examples
var config = Configuration.Builder(sdkKey)
    .Http(
        Components.HttpConfiguration()
            .ConnectTimeout(TimeSpan.FromMilliseconds(3000))
    )
    .Build();
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Logging()

Returns a configuration builder for the SDK's logging configuration.

Declaration
public static LoggingConfigurationBuilder Logging()
Returns
Type Description
LoggingConfigurationBuilder

a configurable factory object
Remarks

Passing this to Logging(LoggingConfigurationBuilder), after setting any desired properties on the builder, applies this configuration to the SDK.

For a description of the default behavior, see LoggingConfigurationBuilder.

For more about how logging works in the SDK, see the LaunchDarkly feature guide.

Examples
var config = Configuration.Builder(mobileKey)
    .Logging(Components.Logging().Level(LogLevel.Warn)))
    .Build();
See Also
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Logging(ILogAdapter)

Returns a configuration builder for the SDK's logging configuration, specifying the logging implementation.

Declaration
public static LoggingConfigurationBuilder Logging(ILogAdapter adapter)
Parameters
Type Name Description
ILogAdapter adapter

an ILogAdapter for the desired logging implementation
Returns
Type Description
LoggingConfigurationBuilder

a configurable factory object
Remarks

This is a shortcut for calling Logging() and then Adapter(ILogAdapter), to specify a logging implementation other than the default one. For details about the default implementation, see Logging().

By default, the minimum log level is Info (that is, Debug logging is disabled). This can be overridden with Level(LogLevel).

For more about log adapters, see Adapter(ILogAdapter).

For more about how logging works in the SDK, see the LaunchDarkly feature guide.

Examples
var config = Configuration.Builder(mobileKey)
    .Logging(Components.Logging(Logs.ToConsole))
    .Build();
See Also
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Persistence()

Returns a configuration builder for the SDK's persistent storage configuration.

Declaration
public static PersistenceConfigurationBuilder Persistence()
Returns
Type Description
PersistenceConfigurationBuilder

a builder
Remarks

Passing this to Persistence(PersistenceConfigurationBuilder), after setting any desired properties on the builder, applies this configuration to the SDK.

Examples
var config = Configuration.Builder(sdkKey)
    .Persistence(
        Components.Persistence().MaxCachedUsers(10)
    )
    .Build();
See Also
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PollingDataSource()

Returns a configurable factory for using only polling mode to get feature flag data.

Declaration
public static PollingDataSourceBuilder PollingDataSource()
Returns
Type Description
PollingDataSourceBuilder

a builder for setting polling connection properties
Remarks

This 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.

The SDK may still use polling mode sometimes even when streaming mode is enabled, such as when an application is in the background. You do not need to specifically select polling mode in order for that to happen.

To use only polling mode, call this method to obtain a builder, change its properties with the PollingDataSourceBuilder methods, and pass it to DataSource(IComponentConfigurer<IDataSource>).

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

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

Returns a configuration builder for analytics event delivery.

Declaration
public static EventProcessorBuilder SendEvents()
Returns
Type Description
EventProcessorBuilder

a builder for setting event properties
Remarks

The default configuration has events enabled with default settings. If you want to customize this behavior, call this method to obtain a builder, change its properties with the EventProcessorBuilder methods, and pass it to Events(IComponentConfigurer<IEventProcessor>).

To completely disable sending analytics events, use NoEvents instead.

Examples
var config = Configuration.Builder(mobileKey)
    .Events(Components.SendEvents()
        .Capacity(5000)
        .FlushInterval(TimeSpan.FromSeconds(2)))
    .Build();
See Also
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ServiceEndpoints()

Returns a builder for configuring custom service URIs.

Declaration
public static ServiceEndpointsBuilder ServiceEndpoints()
Returns
Type Description
ServiceEndpointsBuilder

a configuration builder
Remarks

Passing this to ServiceEndpoints(ServiceEndpointsBuilder), after setting any desired properties on the builder, applies this configuration to the SDK.

Most applications will never need to use this method. The main use case is when connecting to a LaunchDarkly Relay Proxy instance. For more information, see ServiceEndpointsBuilder.

Examples
var config = Configuration.Builder(mobileKey)
    .ServiceEndpoints(Components.ServiceEndpoints().RelayProxy("http://my-relay-hostname:80"))
    .Build();
See Also
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StreamingDataSource()

Returns a configurable factory for using streaming mode to get feature flag data.

Declaration
public static StreamingDataSourceBuilder StreamingDataSource()
Returns
Type Description
StreamingDataSourceBuilder

a builder for setting streaming connection properties
Remarks

By default, the SDK uses a streaming connection to receive feature flag data from LaunchDarkly. To use the default behavior, you do not need to call this method. However, if you want to customize the behavior of the connection, call this method to obtain a builder, change its properties with the StreamingDataSourceBuilder methods, and pass it to DataSource(IComponentConfigurer<IDataSource>).

The SDK may still use polling mode sometimes even when streaming mode is enabled, such as when an application is in the background.

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

Examples
var config = Configuration.Builder(mobileKey)
    .DataSource(Components.StreamingDataSource()
        .InitialReconnectDelay(TimeSpan.FromMilliseconds(500)))
    .Build();