Module: Profiler::MCP::BodyFormatter

Defined in:
lib/profiler/mcp/body_formatter.rb

Class Method Summary collapse

Class Method Details

.format_body(token, name, body, encoding, params) ⇒ Object

Formats a body string for MCP output.

params keys used:

"save_bodies"   (boolean) — save to ./tmp/rails-profiler/{token}/{name} and return path
"max_body_size" (number)  — truncate inline body at N chars
"json_path"     (string)  — JSONPath to extract from body when save_bodies is true
"xml_path"      (string)  — XPath to extract from body when save_bodies is true

Returns a formatted string ready to embed in markdown, or nil if body is blank.



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/profiler/mcp/body_formatter.rb', line 18

def self.format_body(token, name, body, encoding, params)
  return "  *(binary, base64 encoded)*" if encoding == "base64"
  return nil if body.nil? || body.empty?

  if encoding == "gzip+base64"
    begin
      body = Zlib::Inflate.inflate(Base64.strict_decode64(body))
    rescue Zlib::Error, ArgumentError
      # fall through with original body
    end
  end

  if params["save_bodies"]
    path = FileCache.save(token, name, body)
    if path
      result = "  *(saved → `#{path}`)*"
      if params["json_path"]
        extracted = PathExtractor.extract_json(body, params["json_path"])
        result += "\n  `#{params['json_path']}` → `#{extracted}`"
      elsif params["xml_path"]
        extracted = PathExtractor.extract_xml(body, params["xml_path"])
        result += "\n  `#{params['xml_path']}` → `#{extracted}`"
      end
      result
    else
      truncate_body(body, params["max_body_size"])
    end
  else
    truncate_body(body, params["max_body_size"])
  end
end

.truncate_body(body, max_size) ⇒ Object 



50
51
52
53
54
55
56
57
58
 
# File 'lib/profiler/mcp/body_formatter.rb', line 50

def self.truncate_body(body, max_size)
  max = max_size&.to_i
  content = if max && body.length > max
    "#{body[0, max]}\n... [truncated, #{body.length} chars total]"
  else
    body
  end
  "```\n#{content}\n```"
end