Class: RailsAiContext::Tools::ReadLogs

Inherits:
BaseTool
  • Object
show all
Defined in:
lib/rails_ai_context/tools/read_logs.rb

Constant Summary collapse

MAX_READ_BYTES =

1MB

1_048_576
MAX_LINES = 
500
LEVEL_HIERARCHY = 
{ "DEBUG" => 0, "INFO" => 1, "WARN" => 2, "ERROR" => 3, "FATAL" => 4 }.freeze

Constants inherited from BaseTool

BaseTool::DEFAULT_SESSION, BaseTool::MAX_SESSIONS, BaseTool::MAX_SESSION_ID_LENGTH, BaseTool::SESSION_CONTEXT, BaseTool::SHARED_CACHE

Class Method Summary collapse

Methods inherited from BaseTool

abstract!, abstract?, api_only_app?, api_only_note, cache_key, cached_context, config, current_session, #dedupe_put_patch_routes, detail_param?, error_response, evict_oldest_sessions, extract_method_source_from_file, extract_method_source_from_string, find_closest_match, fuzzy_find_key, guide_row, inherited, introspection_warnings_note, invalid_detail_note, normalize_detail, not_found_response, paginate, rails_app, rails_env_name, registered_tools, reset_all_caches!, reset_cache!, session_from, session_params, session_queries, session_record, session_reset!, static_tier_banner, static_tier_refusal, text_response, touch_session, unavailable_note, with_session, with_session_for

Methods included from SectionFetch

#fetch_section, usable?

Class Method Details

.call(lines: nil, level: "all", file: nil, search: nil, server_context: nil, **_extra) ⇒ Object 



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# File 'lib/rails_ai_context/tools/read_logs.rb', line 47

def self.call(lines: nil, level: "all", file: nil, search: nil, server_context: nil, **_extra)
  warnings = []

  # Normalize and validate lines
  original_lines = lines
  lines = (lines || config.log_lines).to_i
  if original_lines
    int_val = original_lines.to_i
    if int_val < 1
      lines = 1
      warnings << "lines must be >= 1, using 1"
    elsif int_val > MAX_LINES
      lines = MAX_LINES
      warnings << "lines clamped to #{MAX_LINES} (was #{int_val})"
    else
      lines = int_val
    end
  end

  # Validate level
  level = level.to_s.strip.upcase
  level = "all" if level.empty?
  valid_levels = LEVEL_HIERARCHY.keys + [ "ALL" ]
  unless valid_levels.include?(level.upcase)
    return text_response("Unknown level: '#{level}'. Valid values: #{valid_levels.join(', ')}")
  end
  level = level == "ALL" ? "all" : level

  # Resolve log file
  path = resolve_log_file(file)
  available = available_log_files
  unless path
    msg = if available.any?
      "Log file '#{file || "#{rails_env_name}.log"}' not found.\nAvailable log files: #{available.join(', ')}"
    else
      "No log files found in log/. Your app may log to stdout (common in Docker/container environments)."
    end
    return text_response(msg)
  end

  # Tail the file
  raw_lines = tail_file(path, lines)
  if raw_lines.empty?
    return text_response("# Log: #{File.basename(path)}\nLog file is empty.\n\n---\nAvailable log files: #{available.join(', ')}")
  end

  # Detect format and filter by level
  format = detect_format(raw_lines)
  filtered = filter_by_level(raw_lines, level, format)

  # Apply search filter
  if search && !search.strip.empty?
    search_term = search.strip
    filtered = filtered.select { |line| line.downcase.include?(search_term.downcase) }
  end

  if filtered.empty?
    return text_response("# Log: #{File.basename(path)}\nNo entries matching level:#{level}#{" search:\"#{search}\"" if search}.\n\n---\nAvailable log files: #{available.join(', ')}")
  end

  # Redact sensitive data
  redacted = filtered.map { |line| RailsAiContext::Redaction.redact_log_line(line) }

  # Format output
  file_size = File.size(path)
  size_label = if file_size > 1_000_000
    "#{(file_size / 1_000_000.0).round(1)} MB"
  elsif file_size > 1_000
    "#{(file_size / 1_000.0).round(1)} KB"
  else
    "#{file_size} B"
  end

  level_label = level == "all" ? "all levels" : "#{level}+"

  output = [ "# Log: #{File.basename(path)}" ]
  output << "Size: #{size_label} | Showing last #{count_phrase(redacted.size, "line")} | Level: #{level_label}"
  warnings.each { |w| output << "**Warning:** #{w}" } if warnings.any?
  output << ""
  output << "```"
  output.concat(redacted)
  output << "```"
  output << ""
  output << "---"
  output << "Available log files: #{available.join(', ')}"

  text_response(output.join("\n"))
end