contrast.rb in contrast-agent-6.4.0

- old
+ new

@@ -19,10 +19,43 @@
   alias_method :cs__method, :method
   alias_method :cs__respond_to?, :respond_to?
   alias_method :cs__singleton_class, :singleton_class
 end
 
+# ActiveRecord gives access to the `String#blank?` method, which we've started using. We need to make sure that method
+# actually exists.
+# From https://github.com/rails/rails/blob/main/activesupport/lib/active_support/core_ext/object/blank.rb
+class String
+  unless cs__respond_to?(:blank?)
+
+    CS__BLANK_RE = /\A[[:space:]]*\z/.cs__freeze
+    # A string is blank if it's empty or contains whitespaces only:
+    #
+    #   ''.blank?       # => true
+    #   '   '.blank?    # => true
+    #   "\t\n\r".blank? # => true
+    #   ' blah '.blank? # => false
+    #
+    # Unicode whitespace is supported:
+    #
+    #   "\u00a0".blank? # => true
+    #
+    # @return [true, false]
+    def blank?
+      # The regexp that matches blank strings is expensive. For the case of empty
+      # strings we can speed up this method (~3.5x) with an empty? call. The
+      # penalty for the rest of strings is marginal.
+      empty? ||
+          begin
+            CS__BLANK_RE.match?(self)
+          rescue Encoding::CompatibilityError
+            false
+          end
+    end
+  end
+end
+
 if RUBY_VERSION >= '3.0.0' && RUBY_VERSION < '3.1.0'
   # This fixes Ruby 3.0 issues with Module#(some instance method) patching by preventing the prepending of
   # a JSON helper on protobuf load. String.instance_method(:+) is one of the most noticeable.
   # This is fixed in Ruby 3.1.0
   # TODO: RUBY-1132 Remove this once Ruby 3 support is dropped.
@@ -48,9 +81,10 @@
 require 'contrast/components/scope'
 require 'contrast/components/settings'
 require 'contrast/utils/telemetry_hash'
 require 'contrast/utils/telemetry'
 require 'contrast/agent/telemetry/events/exceptions/telemetry_exception_event'
+require 'protobuf' # TODO: RUBY-1438
 
 module Contrast
   API = Contrast::Components::Api::Interface.new
   SCOPE = Contrast::Components::Scope::Interface.new
   CONFIG = Contrast::Components::Config::Interface.new