Add pattern matching support to Net::HTTPGenericRequest

lib/net/http/generic_request.rb

@@ -9,6 +9,8 @@
 # :include: doc/net-http/examples.rdoc
 #
 class Net::HTTPGenericRequest
+  # Valid keys for pattern matching via #deconstruct_keys.
+  PATTERN_MATCHING_KEYS = %i[method path uri body content_type].freeze
 
   include Net::HTTPHeader
 
@@ -208,6 +210,24 @@ def body_stream=(input)
     input
   end
 
+  # Returns a hash of request attributes for pattern matching.
+  #
+  # Valid keys are: +:method+, +:path+, +:uri+, +:body+, +:content_type+
+  #
+  # Example:
+  #
+  #   case request
+  #   in method: 'POST', path: %r{^/api/}
+  #     handle_api_request(request)
+  #   in method: 'GET', path: '/'
+  #     handle_root
+  #   end
+  #
+  def deconstruct_keys(keys)
+    valid_keys = keys ? PATTERN_MATCHING_KEYS & keys : PATTERN_MATCHING_KEYS
+    valid_keys.to_h { |key| [key, public_send(key)] }
+  end
+
   def set_body_internal(str)   #:nodoc: internal use only
     raise ArgumentError, "both of body argument and HTTPRequest#body set" if str and (@body or @body_stream)
     self.body = str if str

test/net/http/test_http_request.rb

@@ -89,5 +89,45 @@ def test_header_set
                          'Bug #7831 - do not decode content if the user overrides'
   end if Net::HTTP::HAVE_ZLIB
 
+  def test_deconstruct_keys
+    uri = URI('https://example.com/api/users')
+    req = Net::HTTP::Post.new(uri)
+    req.body = 'test data'
+    req['content-type'] = 'application/json'
+
+    keys = req.deconstruct_keys(nil)
+    assert_equal 'POST', keys[:method]
+    assert_equal '/api/users', keys[:path]
+    assert_equal uri, keys[:uri]
+    assert_equal 'test data', keys[:body]
+    assert_equal 'application/json', keys[:content_type]
+  end
+
+  def test_deconstruct_keys_with_specific_keys
+    req = Net::HTTP::Get.new('/test')
+
+    keys = req.deconstruct_keys([:method, :path])
+    assert_equal({method: 'GET', path: '/test'}, keys)
+  end
+
+  def test_pattern_matching
+    uri = URI('https://example.com/api/users')
+    req = Net::HTTP::Post.new(uri)
+
+    begin
+      matched = instance_eval <<~RUBY, __FILE__, __LINE__ + 1
+        case req
+        in method: 'POST', path: %r{^/api/}
+          true
+        else
+          false
+        end
+      RUBY
+      assert_equal true, matched
+    rescue SyntaxError
+      omit "Pattern matching requires Ruby 2.7+"
+    end
+  end
+
 end