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.

Parameters:

  • opts (Hash) (defaults to: {})

    the configuration options

  • hooks (Hash)

    a customizable set of options

Options Hash (opts):



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# File 'lib/ldclient-rb/config.rb', line 49

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] || []
  @send_events = opts.has_key?(:send_events) ? opts[:send_events] : Config.default_send_events
  @context_keys_capacity = opts[:context_keys_capacity] || Config.default_context_keys_capacity
  @context_keys_flush_interval = opts[:context_keys_flush_interval] || Config.default_context_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]
  @hooks = (opts[:hooks] || []).keep_if { |hook| hook.is_a? Interfaces::Hooks::Hook }
  @omit_anonymous_contexts = opts.has_key?(:omit_anonymous_contexts) && opts[:omit_anonymous_contexts]
  @data_source_update_sink = nil
end

Instance Attribute Details

#all_attributes_privateBoolean (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 233

def all_attributes_private
  @all_attributes_private
end

#applicationHash (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 313

def application
  @application
end

#base_uriString (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 104

def base_uri
  @base_uri
end

#big_segmentsBigSegmentsConfig (readonly)

Configuration options related to Big Segments.

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

Returns:



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# File 'lib/ldclient-rb/config.rb', line 295

def big_segments
  @big_segments
end

#cache_storeObject (readonly)

A store for HTTP caching (used only in polling mode). This must support the semantics used by the 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 193

def cache_store
  @cache_store
end

#capacityInteger (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 184

def capacity
  @capacity
end

#connect_timeoutFloat (readonly)

The connect timeout for network connections in seconds.

Returns:

  • (Float)


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# File 'lib/ldclient-rb/config.rb', line 213

def connect_timeout
  @connect_timeout
end

#context_keys_capacityInteger (readonly)

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 263

def context_keys_capacity
  @context_keys_capacity
end

#context_keys_flush_intervalFloat (readonly)

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 270

def context_keys_flush_interval
  @context_keys_flush_interval
end

#data_sourceLaunchDarkly::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.



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# File 'lib/ldclient-rb/config.rb', line 285

def data_source
  @data_source
end

#diagnostic_recording_intervalFloat (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 349

def diagnostic_recording_interval
  @diagnostic_recording_interval
end

#events_uriString (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 118

def events_uri
  @events_uri
end

#feature_storeLaunchDarkly::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".



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

def feature_store
  @feature_store
end

#flush_intervalFloat (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 159

def flush_interval
  @flush_interval
end

#hooksObject (readonly)

Initial set of hooks for the client.

Hooks provide entrypoints which allow for observation of SDK functions.

LaunchDarkly provides integration packages, and most applications will not need to implement their own hooks. Refer to the launchdarkly-server-sdk-otel gem for instrumentation.



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# File 'lib/ldclient-rb/config.rb', line 388

def hooks
  @hooks
end

#initial_reconnect_delayFloat (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 207

def initial_reconnect_delay
  @initial_reconnect_delay
end

#loggerLogger (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 174

def logger
  @logger
end

#omit_anonymous_contextsBoolean (readonly)

Sets whether anonymous contexts should be omitted from index and identify events.

The default value is false. Anonymous contexts will be included in index and identify events.

Returns:

  • (Boolean)


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# File 'lib/ldclient-rb/config.rb', line 396

def omit_anonymous_contexts
  @omit_anonymous_contexts
end

#payload_filter_keyObject (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 328

def payload_filter_key
  @payload_filter_key
end

#poll_intervalFloat (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 166

def poll_interval
  @poll_interval
end

#private_attributesArray<String> (readonly)

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.



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# File 'lib/ldclient-rb/config.rb', line 248

def private_attributes
  @private_attributes
end

#read_timeoutFloat (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 200

def read_timeout
  @read_timeout
end

#send_eventsBoolean (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 255

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 377

def socket_factory
  @socket_factory
end

#stream_uriString (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 111

def stream_uri
  @stream_uri
end

#wrapper_nameString (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 358

def wrapper_name
  @wrapper_name
end

#wrapper_versionString (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 367

def wrapper_version
  @wrapper_version
end

Class Method Details

.defaultConfig

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 404

def self.default
  Config.new
end

.default_base_uriString

The default value for #base_uri.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 420

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

.default_cache_storeObject

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 444

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

.default_capacityInteger

The default value for #capacity.

Returns:

  • (Integer)

    10000



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

def self.default_capacity
  10000
end

.default_connect_timeoutFloat

The default value for #connect_timeout.

Returns:

  • (Float)

    2



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# File 'lib/ldclient-rb/config.rb', line 476

def self.default_connect_timeout
  2
end

.default_context_keys_capacityInteger

The default value for #context_keys_capacity.

Returns:

  • (Integer)

    1000



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# File 'lib/ldclient-rb/config.rb', line 546

def self.default_context_keys_capacity
  1000
end

.default_context_keys_flush_intervalFloat

The default value for #context_keys_flush_interval.

Returns:

  • (Float)

    300



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# File 'lib/ldclient-rb/config.rb', line 554

def self.default_context_keys_flush_interval
  300
end

.default_diagnostic_recording_intervalFloat

The default value for #diagnostic_recording_interval.

Returns:

  • (Float)

    900



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# File 'lib/ldclient-rb/config.rb', line 562

def self.default_diagnostic_recording_interval
  900
end

.default_events_uriString

The default value for #events_uri.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 436

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

.default_feature_storeLaunchDarkly::Interfaces::FeatureStore

The default value for #feature_store.



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# File 'lib/ldclient-rb/config.rb', line 514

def self.default_feature_store
  InMemoryFeatureStore.new
end

.default_flush_intervalFloat

The default value for #flush_interval.

Returns:

  • (Float)

    10



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# File 'lib/ldclient-rb/config.rb', line 452

def self.default_flush_interval
  10
end

.default_initial_reconnect_delayFloat

The default value for #initial_reconnect_delay.

Returns:

  • (Float)

    1



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# File 'lib/ldclient-rb/config.rb', line 468

def self.default_initial_reconnect_delay
  1
end

.default_loggerLogger

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 484

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

.default_offlineBoolean

The default value for #offline?.

Returns:

  • (Boolean)

    false



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# File 'lib/ldclient-rb/config.rb', line 522

def self.default_offline
  false
end

.default_poll_intervalFloat

The default value for #poll_interval.

Returns:

  • (Float)

    30



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# File 'lib/ldclient-rb/config.rb', line 530

def self.default_poll_interval
  30
end

.default_read_timeoutFloat

The default value for #read_timeout.

Returns:

  • (Float)

    10



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# File 'lib/ldclient-rb/config.rb', line 460

def self.default_read_timeout
  10
end

.default_send_eventsBoolean

The default value for #send_events.

Returns:

  • (Boolean)

    true



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# File 'lib/ldclient-rb/config.rb', line 538

def self.default_send_events
  true
end

.default_streamBoolean

The default value for #stream?.

Returns:

  • (Boolean)

    true



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# File 'lib/ldclient-rb/config.rb', line 498

def self.default_stream
  true
end

.default_stream_uriString

The default value for #stream_uri.

Returns:



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# File 'lib/ldclient-rb/config.rb', line 428

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

.default_use_lddBoolean

The default value for #use_ldd?.

Returns:

  • (Boolean)

    false



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# File 'lib/ldclient-rb/config.rb', line 506

def self.default_use_ldd
  false
end

.minimum_diagnostic_recording_intervalFloat

The minimum value for #diagnostic_recording_interval.

Returns:

  • (Float)

    60



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# File 'lib/ldclient-rb/config.rb', line 570

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 339

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 150

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 126

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" and "Using a persistent 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 141

def use_ldd?
  @use_ldd
end