Class: LaunchDarkly::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/ldclient-rb/config.rb

Overview

This class exposes advanced configuration options for the LaunchDarkly client library. Most users will not need to use a custom configuration– the default configuration sets sane defaults for most use cases.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Config

Constructor for creating custom LaunchDarkly configurations.

user_keys_capacity and user_keys_flush_interval are deprecated configuration options. They exist to maintain backwards compatibility with previous configurations. Newer code should prefer their replacement options – context_keys_capacity and context_keys_flush_interval.

In the event both the user and context variations are provided, the context specific configuration option will take precedence.

Similarly, private_attribute_names is deprecated. Newer code should prefer private_attributes. If both are provided, private_attributes will take precedence.

Parameters:

  • opts (Hash) (defaults to: {}) —

    the configuration options

Options Hash (opts):



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# File 'lib/ldclient-rb/config.rb', line 62

def initialize(opts = {})
  @base_uri = (opts[:base_uri] || Config.default_base_uri).chomp("/")
  @stream_uri = (opts[:stream_uri] || Config.default_stream_uri).chomp("/")
  @events_uri = (opts[:events_uri] || Config.default_events_uri).chomp("/")
  @capacity = opts[:capacity] || Config.default_capacity
  @logger = opts[:logger] || Config.default_logger
  @cache_store = opts[:cache_store] || Config.default_cache_store
  @flush_interval = opts[:flush_interval] || Config.default_flush_interval
  @connect_timeout = opts[:connect_timeout] || Config.default_connect_timeout
  @read_timeout = opts[:read_timeout] || Config.default_read_timeout
  @initial_reconnect_delay = opts[:initial_reconnect_delay] || Config.default_initial_reconnect_delay
  @feature_store = opts[:feature_store] || Config.default_feature_store
  @stream = opts.has_key?(:stream) ? opts[:stream] : Config.default_stream
  @use_ldd = opts.has_key?(:use_ldd) ? opts[:use_ldd] : Config.default_use_ldd
  @offline = opts.has_key?(:offline) ? opts[:offline] : Config.default_offline
  @poll_interval = opts.has_key?(:poll_interval) && opts[:poll_interval] > Config.default_poll_interval ? opts[:poll_interval] : Config.default_poll_interval
  @all_attributes_private = opts[:all_attributes_private] || false
  @private_attributes = opts[:private_attributes] || opts[:private_attribute_names] || []
  @send_events = opts.has_key?(:send_events) ? opts[:send_events] : Config.default_send_events
  @context_keys_capacity = opts[:context_keys_capacity] || opts[:user_keys_capacity] || Config.default_context_keys_capacity
  @context_keys_flush_interval = opts[:context_keys_flush_interval] || opts[:user_keys_flush_interval] || Config.default_user_keys_flush_interval
  @data_source = opts[:data_source]
  @diagnostic_opt_out = opts.has_key?(:diagnostic_opt_out) && opts[:diagnostic_opt_out]
  @diagnostic_recording_interval = opts.has_key?(:diagnostic_recording_interval) && opts[:diagnostic_recording_interval] > Config.minimum_diagnostic_recording_interval ?
    opts[:diagnostic_recording_interval] : Config.default_diagnostic_recording_interval
  @wrapper_name = opts[:wrapper_name]
  @wrapper_version = opts[:wrapper_version]
  @socket_factory = opts[:socket_factory]
  @big_segments = opts[:big_segments] || BigSegmentsConfig.new(store: nil)
  @application = LaunchDarkly::Impl::Util.validate_application_info(opts[:application] || {}, @logger)
  @payload_filter_key = opts[:payload_filter_key]
  @data_source_update_sink = nil
end

Instance Attribute Details

#all_attributes_private ⇒ Boolean (readonly)

True if all context attributes (other than the key) should be considered private. This means that the attribute values will not be sent to LaunchDarkly in analytics events and will not appear on the LaunchDarkly dashboard.

Returns:

  • (Boolean)

See Also:



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# File 'lib/ldclient-rb/config.rb', line 244

def all_attributes_private
  @all_attributes_private
end

#application ⇒ Hash (readonly)

An object that allows configuration of application metadata.

Application metadata may be used in LaunchDarkly analytics or other product features, but does not affect feature flag evaluations.

If you want to set non-default values for any of these fields, provide the appropriately configured hash to the LaunchDarkly::Config object.

Examples:

Configuring application information

opts[:application] = {
  id: "MY APPLICATION ID",
  version: "MY APPLICATION VERSION"
}
config = LDConfig.new(opts)

Returns:

  • (Hash) 


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# File 'lib/ldclient-rb/config.rb', line 348

def application
  @application
end

#base_uri ⇒ String (readonly)

The base URL for the LaunchDarkly server. This is configurable mainly for testing purposes; most users should use the default value.

Returns:

  • (String) 


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# File 'lib/ldclient-rb/config.rb', line 115

def base_uri
  @base_uri
end

#big_segments ⇒ BigSegmentsConfig (readonly)

Configuration options related to Big Segments.

Big Segments are a specific type of segments. For more information, read the LaunchDarkly documentation: docs.launchdarkly.com/home/users/big-segments

Returns:



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# File 'lib/ldclient-rb/config.rb', line 330

def big_segments
  @big_segments
end

#cache_store ⇒ Object (readonly)

A store for HTTP caching (used only in polling mode). This must support the semantics used by the [faraday-http-cache](github.com/plataformatec/faraday-http-cache) gem, although the SDK no longer uses Faraday. Defaults to the Rails cache in a Rails environment, or a thread-safe in-memory store otherwise.

Returns:

  • (Object) 


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# File 'lib/ldclient-rb/config.rb', line 204

def cache_store
  @cache_store
end

#capacity ⇒ Integer (readonly)

The capacity of the events buffer. The client buffers up to this many events in memory before flushing. If the capacity is exceeded before the buffer is flushed, events will be discarded. Increasing the capacity means that events are less likely to be discarded, at the cost of consuming more memory.

Returns:

  • (Integer) 


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# File 'lib/ldclient-rb/config.rb', line 195

def capacity
  @capacity
end

#connect_timeout ⇒ Float (readonly)

The connect timeout for network connections in seconds.

Returns:

  • (Float) 


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# File 'lib/ldclient-rb/config.rb', line 224

def connect_timeout
  @connect_timeout
end

#context_keys_capacity ⇒ Integer (readonly) Also known as: user_keys_capacity

The number of context keys that the event processor can remember at any one time. This reduces the amount of duplicate context details sent in analytics events.

Returns:

  • (Integer)

See Also:



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# File 'lib/ldclient-rb/config.rb', line 282

def context_keys_capacity
  @context_keys_capacity
end

#context_keys_flush_interval ⇒ Float (readonly) Also known as: user_keys_flush_interval

The interval in seconds at which the event processor will reset its set of known context keys.

Returns:

  • (Float)

See Also:



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# File 'lib/ldclient-rb/config.rb', line 297

def context_keys_flush_interval
  @context_keys_flush_interval
end

#data_source ⇒ LaunchDarkly::Interfaces::DataSource|lambda (readonly)

An object that is responsible for receiving feature flag data from LaunchDarkly. By default, the client uses its standard polling or streaming implementation; this is customizable for testing purposes.

This may be set to either an object that conforms to Interfaces::DataSource, or a lambda (or Proc) that takes two parameters– SDK key and LaunchDarkly::Config– and returns such an object.

Returns:

See Also:



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# File 'lib/ldclient-rb/config.rb', line 320

def data_source
  @data_source
end

#data_source_update_sink ⇒ Object

Returns the component that allows a data source to push data into the SDK.

This property should only be set by the SDK. Long term access of this property is not supported; it is temporarily being exposed to maintain backwards compatibility while the SDK structure is updated.

Custom data source implementations should integrate with this sink if they want to provide support for data source status listeners.



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# File 'lib/ldclient-rb/config.rb', line 108

def data_source_update_sink
  @data_source_update_sink
end

#diagnostic_recording_interval ⇒ Float (readonly)

The interval at which periodic diagnostic data is sent, in seconds.

The default is 900 (every 15 minutes) and the minimum value is 60 (every minute).

Returns:

  • (Float) 


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# File 'lib/ldclient-rb/config.rb', line 384

def diagnostic_recording_interval
  @diagnostic_recording_interval
end

#events_uri ⇒ String (readonly)

The base URL for the LaunchDarkly events server. This is configurable mainly for testing purposes; most users should use the default value.

Returns:

  • (String) 


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# File 'lib/ldclient-rb/config.rb', line 129

def events_uri
  @events_uri
end

#feature_store ⇒ LaunchDarkly::Interfaces::FeatureStore (readonly)

A store for feature flags and related data. The client uses it to store all data received from LaunchDarkly, and uses the last stored data when evaluating flags. Defaults to InMemoryFeatureStore; for other implementations, see Integrations.

For more information, see [“Persistent data stores”](docs.launchdarkly.com/sdk/concepts/data-stores).

Returns:



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# File 'lib/ldclient-rb/config.rb', line 235

def feature_store
  @feature_store
end

#flush_interval ⇒ Float (readonly)

The number of seconds between flushes of the event buffer. Decreasing the flush interval means that the event buffer is less likely to reach capacity.

Returns:

  • (Float) 


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# File 'lib/ldclient-rb/config.rb', line 170

def flush_interval
  @flush_interval
end

#initial_reconnect_delay ⇒ Float (readonly)

The initial delay before reconnecting after an error in the SSE client. This only applies to the streaming connection.

Returns:

  • (Float) 


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# File 'lib/ldclient-rb/config.rb', line 218

def initial_reconnect_delay
  @initial_reconnect_delay
end

#logger ⇒ Logger (readonly)

The configured logger for the LaunchDarkly client. The client library uses the log to print warning and error messages. If not specified, this defaults to the Rails logger in a Rails environment, or stdout otherwise.

Returns:

  • (Logger) 


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# File 'lib/ldclient-rb/config.rb', line 185

def logger
  @logger
end

#payload_filter_key ⇒ Object (readonly)

LaunchDarkly Server SDKs historically downloaded all flag configuration and segments for a particular environment during initialization.

For some customers, this is an unacceptably large amount of data, and has contributed to performance issues within their products.

Filtered environments aim to solve this problem. By allowing customers to specify subsets of an environment’s flags using a filter key, SDKs will initialize faster and use less memory.

This payload filter key only applies to the default streaming and polling data sources. It will not affect TestData or FileData data sources, nor will it be applied to any data source provided through the #data_source config property.



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# File 'lib/ldclient-rb/config.rb', line 363

def payload_filter_key
  @payload_filter_key
end

#poll_interval ⇒ Float (readonly)

The number of seconds to wait before polling for feature flag updates. This option has no effect unless streaming is disabled.

Returns:

  • (Float) 


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# File 'lib/ldclient-rb/config.rb', line 177

def poll_interval
  @poll_interval
end

#private_attributes ⇒ Array<String> (readonly) Also known as: private_attribute_names

A list of context attribute names that should always be considered private. This means that the attribute values will not be sent to LaunchDarkly in analytics events and will not appear on the LaunchDarkly dashboard.

You can also specify the same behavior for an individual flag evaluation by providing the context object with a list of private attributes.

Returns:

  • (Array<String>)

See Also:



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# File 'lib/ldclient-rb/config.rb', line 259

def private_attributes
  @private_attributes
end

#read_timeout ⇒ Float (readonly)

The read timeout for network connections in seconds. This does not apply to the streaming connection, which uses a longer timeout since the server does not send data constantly.

Returns:

  • (Float) 


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# File 'lib/ldclient-rb/config.rb', line 211

def read_timeout
  @read_timeout
end

#send_events ⇒ Boolean (readonly)

Whether to send events back to LaunchDarkly. This differs from #offline? in that it affects only the sending of client-side events, not streaming or polling for events from the server.

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/config.rb', line 274

def send_events
  @send_events
end

#socket_factory ⇒ #open (readonly)

The factory used to construct sockets for HTTP operations. The factory must provide the method ‘open(uri, timeout)`. The open method must return a connected stream that implements the IO class, such as a TCPSocket.

Defaults to nil.

Returns:

  • (#open) 


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# File 'lib/ldclient-rb/config.rb', line 412

def socket_factory
  @socket_factory
end

#stream_uri ⇒ String (readonly)

The base URL for the LaunchDarkly streaming server. This is configurable mainly for testing purposes; most users should use the default value.

Returns:

  • (String) 


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# File 'lib/ldclient-rb/config.rb', line 122

def stream_uri
  @stream_uri
end

#wrapper_name ⇒ String (readonly)

For use by wrapper libraries to set an identifying name for the wrapper being used.

This will be sent in User-Agent headers during requests to the LaunchDarkly servers to allow recording metrics on the usage of these wrapper libraries.

Returns:

  • (String) 


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# File 'lib/ldclient-rb/config.rb', line 393

def wrapper_name
  @wrapper_name
end

#wrapper_version ⇒ String (readonly)

For use by wrapper libraries to report the version of the library in use.

If wrapper_name is not set, this field will be ignored. Otherwise the version string will be included in the User-Agent headers along with the wrapper_name during requests to the LaunchDarkly servers.

Returns:

  • (String) 


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# File 'lib/ldclient-rb/config.rb', line 402

def wrapper_version
  @wrapper_version
end

Class Method Details

.default ⇒ Config

The default LaunchDarkly client configuration. This configuration sets reasonable defaults for most users.

Returns:

  • (Config) —

    The default LaunchDarkly configuration.



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# File 'lib/ldclient-rb/config.rb', line 419

def self.default
  Config.new
end

.default_base_uri ⇒ String

The default value for #base_uri.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 435

def self.default_base_uri
  "https://sdk.launchdarkly.com"
end

.default_cache_store ⇒ Object

The default value for #cache_store.

Returns:

  • (Object) —

    the Rails cache if in Rails, or a simple in-memory implementation otherwise



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# File 'lib/ldclient-rb/config.rb', line 459

def self.default_cache_store
  defined?(Rails) && Rails.respond_to?(:cache) ? Rails.cache : ThreadSafeMemoryStore.new
end

.default_capacity ⇒ Integer

The default value for #capacity.

Returns:

  • (Integer) —

    10000



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# File 'lib/ldclient-rb/config.rb', line 427

def self.default_capacity
  10000
end

.default_connect_timeout ⇒ Float

The default value for #connect_timeout.

Returns:

  • (Float) —

    2



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# File 'lib/ldclient-rb/config.rb', line 491

def self.default_connect_timeout
  2
end

.default_context_keys_capacity ⇒ Integer Also known as: default_user_keys_capacity

The default value for #context_keys_capacity.

Returns:

  • (Integer) —

    1000



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# File 'lib/ldclient-rb/config.rb', line 561

def self.default_context_keys_capacity
  1000
end

.default_context_keys_flush_interval ⇒ Float Also known as: default_user_keys_flush_interval

The default value for #context_keys_flush_interval.

Returns:

  • (Float) —

    300



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# File 'lib/ldclient-rb/config.rb', line 569

def self.default_context_keys_flush_interval
  300
end

.default_diagnostic_recording_interval ⇒ Float

The default value for #diagnostic_recording_interval.

Returns:

  • (Float) —

    900



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# File 'lib/ldclient-rb/config.rb', line 589

def self.default_diagnostic_recording_interval
  900
end

.default_events_uri ⇒ String

The default value for #events_uri.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 451

def self.default_events_uri
  "https://events.launchdarkly.com"
end

.default_feature_store ⇒ LaunchDarkly::Interfaces::FeatureStore

The default value for #feature_store.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 529

def self.default_feature_store
  InMemoryFeatureStore.new
end

.default_flush_interval ⇒ Float

The default value for #flush_interval.

Returns:

  • (Float) —

    10



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# File 'lib/ldclient-rb/config.rb', line 467

def self.default_flush_interval
  10
end

.default_initial_reconnect_delay ⇒ Float

The default value for #initial_reconnect_delay.

Returns:

  • (Float) —

    1



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# File 'lib/ldclient-rb/config.rb', line 483

def self.default_initial_reconnect_delay
  1
end

.default_logger ⇒ Logger

The default value for #logger.

Returns:

  • (Logger) —

    the Rails logger if in Rails, or a default Logger at WARN level otherwise



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# File 'lib/ldclient-rb/config.rb', line 499

def self.default_logger
  if defined?(Rails) && Rails.respond_to?(:logger)
    Rails.logger
  else
    log = ::Logger.new($stdout)
    log.level = ::Logger::WARN
    log
  end
end

.default_offline ⇒ Boolean

The default value for #offline?.

Returns:

  • (Boolean) —

    false



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# File 'lib/ldclient-rb/config.rb', line 537

def self.default_offline
  false
end

.default_poll_interval ⇒ Float

The default value for #poll_interval.

Returns:

  • (Float) —

    30



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# File 'lib/ldclient-rb/config.rb', line 545

def self.default_poll_interval
  30
end

.default_read_timeout ⇒ Float

The default value for #read_timeout.

Returns:

  • (Float) —

    10



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# File 'lib/ldclient-rb/config.rb', line 475

def self.default_read_timeout
  10
end

.default_send_events ⇒ Boolean

The default value for #send_events.

Returns:

  • (Boolean) —

    true



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# File 'lib/ldclient-rb/config.rb', line 553

def self.default_send_events
  true
end

.default_stream ⇒ Boolean

The default value for #stream?.

Returns:

  • (Boolean) —

    true



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# File 'lib/ldclient-rb/config.rb', line 513

def self.default_stream
  true
end

.default_stream_uri ⇒ String

The default value for #stream_uri.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 443

def self.default_stream_uri
  "https://stream.launchdarkly.com"
end

.default_use_ldd ⇒ Boolean

The default value for #use_ldd?.

Returns:

  • (Boolean) —

    false



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# File 'lib/ldclient-rb/config.rb', line 521

def self.default_use_ldd
  false
end

.minimum_diagnostic_recording_interval ⇒ Float

The minimum value for #diagnostic_recording_interval.

Returns:

  • (Float) —

    60



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# File 'lib/ldclient-rb/config.rb', line 597

def self.minimum_diagnostic_recording_interval
  60
end

Instance Method Details

#diagnostic_opt_out? ⇒ Boolean

Set to true to opt out of sending diagnostics data.

Unless diagnostic_opt_out is set to true, the client will send some diagnostics data to the LaunchDarkly servers in order to assist in the development of future SDK improvements. These diagnostics consist of an initial payload containing some details of the SDK in use, the SDK’s configuration, and the platform the SDK is being run on, as well as periodic information on irregular occurrences such as dropped events.

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/config.rb', line 374

def diagnostic_opt_out?
  @diagnostic_opt_out
end

#offline? ⇒ Boolean

Whether the client should be initialized in offline mode. In offline mode, default values are returned for all flags and no remote network requests are made.

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/config.rb', line 161

def offline?
  @offline
end

#stream? ⇒ Boolean

Whether streaming mode should be enabled. Streaming mode asynchronously updates feature flags in real-time using server-sent events. Streaming is enabled by default, and should only be disabled on the advice of LaunchDarkly support.

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/config.rb', line 137

def stream?
  @stream
end

#use_ldd? ⇒ Boolean

Whether to use the LaunchDarkly relay proxy in daemon mode. In this mode, the client does not use polling or streaming to get feature flag updates from the server, but instead reads them from the feature store, which is assumed to be a database that is populated by a LaunchDarkly relay proxy. For more information, see [“The relay proxy”](docs.launchdarkly.com/home/relay-proxy) and [“Using a persistent data stores”](docs.launchdarkly.com/sdk/concepts/data-stores).

All other properties related to streaming or polling are ignored if this option is set to true.

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/config.rb', line 152

def use_ldd?
  @use_ldd
end