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Merge pull request #279 from koic/refactor__use_symbolize_names

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Use `symbolize_names: true` in `JSON.parse` calls
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Koichi ITO 2026-03-31 15:14:01 +09:00 • committed by GitHub
commit eacf51ec94
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2 changed files with 5 additions and 18 deletions
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8
lib/mcp/server/transports/streamable_http_transport.rb
View file

@ -176,7 +176,7 @@ module MCP
body = parse_request_body(body_string) body = parse_request_body(body_string)
return body unless body.is_a?(Hash) # Error response return body unless body.is_a?(Hash) # Error response
if body["method"] == "initialize" if body[:method] == "initialize"
handle_initialization(body_string, body) handle_initialization(body_string, body)
else else
return missing_session_id_response if !@stateless && !session_id return missing_session_id_response if !@stateless && !session_id
@ -277,17 +277,17 @@ module MCP
end end
def parse_request_body(body_string) def parse_request_body(body_string)
JSON.parse(body_string) JSON.parse(body_string, symbolize_names: true)
rescue JSON::ParserError, TypeError rescue JSON::ParserError, TypeError
[400, { "Content-Type" => "application/json" }, [{ error: "Invalid JSON" }.to_json]] [400, { "Content-Type" => "application/json" }, [{ error: "Invalid JSON" }.to_json]]
end end
def notification?(body) def notification?(body)
!body["id"] && !!body["method"] !body[:id] && !!body[:method]
end end
def response?(body) def response?(body)
!!body["id"] && !body["method"] !!body[:id] && !body[:method]
end end
def handle_initialization(body_string, body) def handle_initialization(body_string, body)

15
lib/mcp/tool/schema.rb
View file

@ -8,7 +8,7 @@ module MCP
attr_reader :schema attr_reader :schema
def initialize(schema = {}) def initialize(schema = {})
@schema = deep_transform_keys(JSON.parse(JSON.dump(schema)), &:to_sym) @schema = JSON.parse(JSON.dump(schema), symbolize_names: true)
@schema[:type] ||= "object" @schema[:type] ||= "object"
validate_schema! validate_schema!
end end
@ -27,19 +27,6 @@ module MCP
JSON::Validator.fully_validate(to_h, data) JSON::Validator.fully_validate(to_h, data)
end end
def deep_transform_keys(schema, &block)
case schema
when Hash
schema.each_with_object({}) do |(key, value), result|
result[yield(key)] = deep_transform_keys(value, &block)
end
when Array
schema.map { |e| deep_transform_keys(e, &block) }
else
schema
end
end
def validate_schema! def validate_schema!
schema = to_h schema = to_h
gem_path = File.realpath(Gem.loaded_specs["json-schema"].full_gem_path) gem_path = File.realpath(Gem.loaded_specs["json-schema"].full_gem_path)