Module: Tina4::Router

Defined in:
lib/tina4/router.rb

Defined Under Namespace

Classes: GroupContext

Class Method Summary collapse

Class Method Details

.add(method, path, handler, auth_handler: nil, swagger_meta: {}, middleware: [], template: nil) ⇒ Object 



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# File 'lib/tina4/router.rb', line 324

def add(method, path, handler, auth_handler: nil, swagger_meta: {}, middleware: [], template: nil)
  route = Route.new(method, path, handler,
                    auth_handler: auth_handler,
                    swagger_meta: swagger_meta,
                    middleware: middleware,
                    template: template)
  # Replace semantics: re-registering the same (method, path) overwrites
  # the existing entry in place rather than appending a second one.
  # This is what makes dev hot-reload work — when a changed route file is
  # re-loaded, its Router.get("/x") call runs again with a fresh handler,
  # and #find_route returns the FIRST match, so a stale leftover would
  # otherwise shadow the new handler forever. Overwriting keeps the
  # registry free of duplicates and ensures the latest handler wins.
  # Distinct (method, path) pairs are untouched — only an exact dup
  # collapses onto the prior slot, preserving its position/order.
  bucket = method_index[route.method]
  existing_index = routes.index { |r| r.method == route.method && r.path == route.path }
  if existing_index
    routes[existing_index] = route
    bucket_index = bucket.index { |r| r.path == route.path }
    if bucket_index
      bucket[bucket_index] = route
    else
      bucket << route
    end
    Tina4::Log.debug("Route replaced: #{route.method} #{route.path}")
  else
    routes << route
    bucket << route
    Tina4::Log.debug("Route registered: #{route.method} #{route.path}")
  end
  route
end

.any(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object 



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# File 'lib/tina4/router.rb', line 378

def any(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("ANY", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.clear! ⇒ Object Also known as: clear 



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# File 'lib/tina4/router.rb', line 497

def clear!
  @routes = []
  @method_index = Hash.new { |h, k| h[k] = [] }
  @ws_routes = []
end

.delete(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object 



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# File 'lib/tina4/router.rb', line 374

def delete(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("DELETE", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.find_route(method, path) ⇒ Object 



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# File 'lib/tina4/router.rb', line 401

def find_route(method, path)
  normalized_method = method.upcase
  # Normalize path once (not per-route)
  normalized_path = path.gsub("\\", "/")
  normalized_path = "/#{normalized_path}" unless normalized_path.start_with?("/")
  normalized_path = normalized_path.chomp("/") unless normalized_path == "/"

  # Check ANY routes first, then method-specific routes
  candidates = (method_index["ANY"] || []) + (method_index[normalized_method] || [])
  candidates.each do |route|
    params = route.match_path(normalized_path)
    return [route, params] if params
  end

  # RFC 9110 §9.3.2: HEAD is identical to GET except for the absence
  # of a response body. If no explicit HEAD route matched, fall back
  # to the GET route — the dispatcher strips the body on the way out
  # so the handler doesn't need to know HEAD even happened.
  if normalized_method == "HEAD"
    (method_index["GET"] || []).each do |route|
      params = route.match_path(normalized_path)
      return [route, params] if params
    end
  end

  nil
end

.find_ws_route(path) ⇒ Object

Find a matching WebSocket route for a given path. Returns [ws_route, params] or nil.



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# File 'lib/tina4/router.rb', line 307

def find_ws_route(path)
  normalized = path.gsub("\\", "/")
  normalized = "/#{normalized}" unless normalized.start_with?("/")
  normalized = normalized.chomp("/") unless normalized == "/"

  ws_routes.each do |ws_route|
    params = ws_route.match?(normalized)
    return [ws_route, params] if params
  end
  nil
end

.get(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object

Convenience registration methods



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# File 'lib/tina4/router.rb', line 358

def get(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("GET", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.get_routes ⇒ Object 



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# File 'lib/tina4/router.rb', line 275

def get_routes
  routes
end

.get_web_socket_routes ⇒ Object

Parity alias — returns all registered WebSocket routes.



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# File 'lib/tina4/router.rb', line 289

def get_web_socket_routes
  ws_routes
end

.group(prefix, auth_handler: nil, middleware: [], &block) ⇒ Object 



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# File 'lib/tina4/router.rb', line 504

def group(prefix, auth_handler: nil, middleware: [], &block)
  GroupContext.new(prefix, auth_handler, middleware).instance_eval(&block)
end

.head(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object

Register an explicit HEAD route. By default the framework auto-handles HEAD by falling back to the GET route and stripping the body (RFC 9110 §9.3.2). Use this only when you need a HEAD handler that does something different from GET — e.g. cheaper existence-check logic, custom validator headers without the cost of building the body. The framework still strips the response body for you on the way out.



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# File 'lib/tina4/router.rb', line 388

def head(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("HEAD", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.list_routes ⇒ Object 



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# File 'lib/tina4/router.rb', line 279

def list_routes
  routes
end

.load_routes(directory) ⇒ Object

Load route files from a directory (file-based route discovery).

mtime-tracked & re-runnable so re-discovery on /__dev/api/reload is cheap and picks up edits without a server restart:

* NEW file (not seen before)            → load it, record its mtime.
* CHANGED file (mtime newer than seen)  → load it again. Ruby's `load`
  RE-EXECUTES the file, so its Router.get(...) calls run afresh and
  #add replaces the (method, path) in place — the new handler wins
  instead of being shadowed by the stale one.
* UNCHANGED file (present, same mtime)  → skip (keeps reload cheap).

Scope guard: the glob is rooted at the user’s routes/‘src` `directory`, so only application route files are ever (re)loaded — framework files are never touched. Records the directory so #rescan_routes! can re-run without re-passing it.



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# File 'lib/tina4/router.rb', line 524

def load_routes(directory)
  return unless Dir.exist?(directory)

  @loaded_route_files ||= {}
  @last_routes_dir = directory

  files = Dir.glob(File.join(directory, "**/*.rb")).sort
  total = files.length
  files.each do |file|
    current_mtime = File.mtime(file).to_i
    # Skip only when we've seen this file AND it hasn't changed since.
    next if @loaded_route_files.key?(file) && current_mtime <= @loaded_route_files[file]
    begin
      load file
      @loaded_route_files[file] = current_mtime
      Tina4::Log.debug("Route loaded: #{file}")
    rescue ScriptError, StandardError => e
      # ScriptError catches SyntaxError, which is NOT a StandardError —
      # a bare `rescue => e` would let a syntax-broken route file crash
      # the whole discovery pass.
      Tina4::Log.error("Failed to load route #{file}: #{e.message}")
      record_broken_route_import(file, e)
    end
  end

  # Zero-routes warning — src/routes/ has .rb files but the router
  # is still empty. Almost certainly the user forgot Tina4::Router.get.
  if total > 0 && routes.empty?
    Tina4::Log.warning(
      "Auto-discover found #{total} .rb file(s) in #{directory} but no routes registered. " \
      "Each route file must call Tina4::Router.get / .post / etc."
    )
  end
end

.match(method, path) ⇒ Object

Find a route matching method + path. Returns [route, params] or nil. match(method, path) — consistent with Python, PHP, and Node.



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# File 'lib/tina4/router.rb', line 477

def match(method, path)
  find_route(method, path)
end

.method_index ⇒ Object

Routes indexed by HTTP method for O(1) method lookup



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# File 'lib/tina4/router.rb', line 320

def method_index
  @method_index ||= Hash.new { |h, k| h[k] = [] }
end

.methods_allowed_for_path(path) ⇒ Object

Return the list of HTTP methods registered for “path“, in the order GET / POST / PUT / PATCH / DELETE / HEAD / OPTIONS. Used by the dispatcher to build the “Allow:“ header on 405 / OPTIONS responses (RFC 9110 §10.2.1, §9.3.7).

If GET is registered for the path, HEAD is appended implicitly (HEAD auto-fallback). OPTIONS is appended whenever the path has any registered method (the framework auto-handles OPTIONS).



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# File 'lib/tina4/router.rb', line 437

def methods_allowed_for_path(path)
  normalized_path = path.gsub("\\", "/")
  normalized_path = "/#{normalized_path}" unless normalized_path.start_with?("/")
  normalized_path = normalized_path.chomp("/") unless normalized_path == "/"

  method_order = %w[GET POST PUT PATCH DELETE HEAD OPTIONS]
  seen = []
  any_matched = false

  method_index.each do |m, routes_for_method|
    next if routes_for_method.empty?
    matched = routes_for_method.any? { |r| r.match_path(normalized_path) }
    next unless matched
    if m == "ANY"
      any_matched = true
    elsif method_order.include?(m)
      seen << m unless seen.include?(m)
    end
  end

  seen = method_order.dup if any_matched

  if !seen.empty?
    seen << "HEAD" if seen.include?("GET") && !seen.include?("HEAD")
    seen << "OPTIONS" unless seen.include?("OPTIONS")
  end

  method_order.select { |m| seen.include?(m) }
end

.options(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object

Register an explicit OPTIONS route. By default the framework auto- handles OPTIONS by building an Allow header from every method registered for the path and returning 204 (RFC 9110 §9.3.7). Use this to take over that behaviour — e.g. to return a richer OPTIONS payload describing the resource.



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# File 'lib/tina4/router.rb', line 397

def options(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("OPTIONS", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.patch(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object 



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# File 'lib/tina4/router.rb', line 370

def patch(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("PATCH", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.post(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object 



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# File 'lib/tina4/router.rb', line 362

def post(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("POST", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.put(path, middleware: [], swagger_meta: {}, template: nil, &block) ⇒ Object 



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# File 'lib/tina4/router.rb', line 366

def put(path, middleware: [], swagger_meta: {}, template: nil, &block)
  add("PUT", path, block, middleware: middleware, swagger_meta: swagger_meta, template: template)
end

.record_broken_route_import(file, error) ⇒ Object

Write a .broken sentinel so /health and the dev dashboard surface auto-discover failures instead of swallowing them into a log line.



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# File 'lib/tina4/router.rb', line 580

def record_broken_route_import(file, error)
  broken_dir = File.join(Dir.pwd, "data", ".broken")
  FileUtils.mkdir_p(broken_dir) unless Dir.exist?(broken_dir)
  slug = file.gsub(%r{[/\\]}, "_")
  payload = JSON.generate(
    type: "auto_discover_failure",
    file: file,
    error: "#{error.class}: #{error.message}"
  )
  File.write(File.join(broken_dir, "discover_#{slug}.broken"), payload)
rescue StandardError
  # If the .broken write itself fails, the original error is already
  # in the log — nothing more to do.
end

.rescan_routes! ⇒ Object

Re-run the most recent load_routes — called by /__dev/api/reload so files dropped into src/routes/ after server boot get picked up without a restart. No-op if load_routes has never been called.



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# File 'lib/tina4/router.rb', line 562

def rescan_routes!
  return [] if @last_routes_dir.nil? || @last_routes_dir.empty?
  before = routes.length
  load_routes(@last_routes_dir)
  added = routes.length - before
  Tina4::Log.info("Re-discovered #{added} new route(s) on reload") if added.positive?
  added
end

.reset_route_discovery! ⇒ Object

Test-only helper — reset the loaded-files state so tests can scan the same directory multiple times with different file contents.



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# File 'lib/tina4/router.rb', line 573

def reset_route_discovery!
  @loaded_route_files = {}
  @last_routes_dir = nil
end

.routes ⇒ Object 



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# File 'lib/tina4/router.rb', line 271

def routes
  @routes ||= []
end

.trailing_slash_redirect? ⇒ Boolean

When TINA4_TRAILING_SLASH_REDIRECT is truthy, the rack app uses this to detect whether the original (un-stripped) path differed from the canonical form so it can issue a 301 redirect. Default false — silent match keeps backward compatibility.

Returns:

  • (Boolean) 


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# File 'lib/tina4/router.rb', line 471

def trailing_slash_redirect?
  %w[true 1 yes on].include?(ENV.fetch("TINA4_TRAILING_SLASH_REDIRECT", "").to_s.strip.downcase)
end

.use(klass) ⇒ Object

Register a class-based middleware globally. The class should define static before_* and/or after_* methods. Example:

class AuthMiddleware
  def self.before_auth(request, response)
    unless request.headers["authorization"]
      return [request, response.json({ error: "Unauthorized" }, 401)]
    end
    [request, response]
  end
end
Tina4::Router.use(AuthMiddleware)



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# File 'lib/tina4/router.rb', line 493

def use(klass)
  Tina4::Middleware.use(klass)
end

.websocket(path, &block) ⇒ Object

Register a WebSocket route. The handler block receives (connection, event, data) where:

connection — WebSocketConnection with #send, #broadcast, #close, #params
event      — :open, :message, or :close
data       — String payload for :message, nil for :open/:close



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# File 'lib/tina4/router.rb', line 298

def websocket(path, &block)
  ws_route = WebSocketRoute.new(path, block)
  ws_routes << ws_route
  Tina4::Log.debug("WebSocket route registered: #{path}")
  ws_route
end

.ws_routes ⇒ Object

Registered WebSocket routes



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# File 'lib/tina4/router.rb', line 284

def ws_routes
  @ws_routes ||= []
end