DEBUG-2334 add types for dynamic instrumentation settings (#3924)

Co-authored-by: Oleg Pudeyev <code@olegp.name>

lib/datadog/di/redactor.rb

@@ -72,10 +72,13 @@ def redacted_type_names_regexp
             if name.start_with?("::")
               # :: prefix is redundant, all names are expected to be
               # fully-qualified.
-              name = name[2...name.length]
+              #
+              # Defaulting to empty string is for steep.
+              name = name[2...name.length] || ""
             end
             if name.end_with?("*")
-              name = name[0..-2]
+              # Defaulting to empty string is for steep.
+              name = name[0..-2] || ""
               suffix = ".*"
             else
               suffix = ""

sig/datadog/core/configuration/settings.rbs

@@ -54,6 +54,44 @@ module Datadog
           def templates: () -> _TemplatesBlock
         end
 
+        interface _DI
+          def enabled: () -> bool
+
+          def enabled=: (bool) -> void
+
+          def untargeted_trace_points: () -> bool
+
+          def untargeted_trace_points=: (bool) -> void
+
+          def propagate_all_exceptions: () -> bool
+
+          def propagate_all_exceptions=: (bool) -> void
+
+          def redacted_identifiers: () -> Array[String]
+
+          def redacted_identifiers=: (Array[String]) -> void
+
+          def redacted_type_names: () -> Array[String]
+
+          def redacted_type_names=: (Array[String]) -> void
+
+          def max_capture_depth: () -> Integer
+
+          def max_capture_depth=: (Integer) -> void
+
+          def max_capture_collection_size: () -> Integer
+
+          def max_capture_collection_size=: (Integer) -> void
+
+          def max_capture_string_length: () -> Integer
+
+          def max_capture_string_length=: (Integer) -> void
+
+          def max_capture_attribute_count: () -> Integer
+
+          def max_capture_attribute_count=: (Integer) -> void
+        end
+
         interface _TemplatesBlock
           def html=: (::String) -> void
 
@@ -84,6 +122,8 @@ module Datadog
 
         def appsec: (?untyped? options) -> Datadog::Core::Configuration::Settings::_AppSec
 
+        def dynamic_instrumentation: (?untyped? options) -> Datadog::Core::Configuration::Settings::_DI
+
         def remote: (?untyped? options) -> Datadog::Core::Configuration::Settings::_Remote
       end
     end

sig/datadog/di/redactor.rbs

@@ -9,7 +9,7 @@ module Datadog
 
       def initialize: (untyped settings) -> void
 
-      attr_reader settings: untyped
+      attr_reader settings: Datadog::Core::Configuration::Settings
 
       def redact_identifier?: (String name) -> (true | false)
 

sig/datadog/di/serializer.rbs

@@ -7,7 +7,7 @@ module Datadog
 
       def initialize: (untyped settings, untyped redactor) -> void
 
-      attr_reader settings: untyped
+      attr_reader settings: Datadog::Core::Configuration::Settings
 
       attr_reader redactor: untyped
       def serialize_args: (untyped args, untyped kwargs) -> untyped