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sync: 2026-09-07

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70b1016 refactor(autoload): remove global exception handler
a534613 refactor(request): propagate validation failures as exceptions
5f3fc16 feat(router): add error boundary with exception callback
9dbfd7d feat: add named parameter injection to resolve()
This commit is contained in:
kj
2026-09-07 18:00:06 -03:00
parent 9ba43e3f25
commit eb882db0c8
4 changed files with 126 additions and 65 deletions
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5
autoload.php
View File

@@ -12,8 +12,3 @@ spl_autoload_register(function ($className) {
require_once $file;
}
});
set_exception_handler(function ($exception) {
echo "Uncaught exception: " , $exception->getMessage(), "\n";
echo $exception->getTraceAsString();
});

45
src/Libs/Request.php
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@@ -2,6 +2,8 @@
namespace Libs;
use Exception;
/**
* Request - DuckBrain
*
@@ -59,17 +61,20 @@ class Request extends Neuron
}
// Run configured validations
if (!$this->validate()) {
exit();
}
$this->validate();
}
/**
* Starts the configured validation.
*
* @return bool
* On failure the single error message is built with Validator::message()
* and handed to onInvalid(), which throws by default: failures travel up
* as exceptions instead of answering HTTP here.
*
* @return void
* @throws Exception When a configured rule fails.
*/
public function validate(): bool
public function validate(): void
{
$actual = match ($_SERVER['REQUEST_METHOD']) {
'POST', 'PUT', 'PATCH', 'DELETE' => $this->{strtolower($_SERVER['REQUEST_METHOD'])},
@@ -88,7 +93,7 @@ class Request extends Neuron
Validator::validateList(static::getRules(), $this->get) &&
Validator::validateList(static::rules(), $body)
) {
return true;
return;
}
$error = Validator::message(
@@ -98,7 +103,6 @@ class Request extends Neuron
);
static::onInvalid($error);
return false;
}
/**
@@ -157,27 +161,20 @@ class Request extends Neuron
/**
* Function to execute when an invalid value has been detected.
*
* Always answers with a single error and HTTP 422. The representation is
* negotiated from the request's Accept header: JSON when the client asks
* for application/json, plain text otherwise.
* The default implementation always throws a generic \Exception carrying
* the single error message and HTTP 422 as its code; the framework's
* exception boundary (Router::apply) renders the response. Override it to
* throw a more specific exception type instead. The never return type is
* the contract: an override that returned would let the request continue
* with invalid data, so PHP rejects such an override at compile time.
*
* @param string $error
*
* @return void
* @return never
* @throws Exception
*/
public function onInvalid(string $error): void
public function onInvalid(string $error): never
{
http_response_code(422);
$accept = $_SERVER['HTTP_ACCEPT'] ?? '';
if (str_contains($accept, 'application/json')) {
header('Content-Type: application/json');
print(json_encode(['error' => $error]));
return;
}
print($error);
throw new Exception($error, 422);
}
}

60
src/Libs/Router.php
View File

@@ -50,7 +50,7 @@ class Router
*
* @var callable $notFoundCallback
*/
public static $notFoundCallback = 'Libs\Router::defaultNotFound';
public static $notFoundCallback = Router::defaultNotFound(...);
/**
* Default callback function for when
@@ -64,6 +64,54 @@ class Router
echo '<h2 style="text-align: center;margin: 25px 0px;">Error 404 - Page Not Found</h2>';
}
/**
* The callback function to be executed when the router's boundary
* catches an exception thrown anywhere in the matched route chain.
* It receives the exception as a named argument: the handler must
* declare its parameter as $exception (typeable as \Throwable).
*
* @var callable $exceptionCallback
*/
public static $exceptionCallback = Router::defaultException(...);
/**
* Default callback function for exception responses.
*
* The HTTP status comes from the exception's code only when it is an
* integer in the 400-599 range; anything else (0, arbitrary codes, the
* SQLSTATE string carried by PDOException) answers 500. The body is
* negotiated from the request's Accept header: JSON when the client asks
* for application/json, plain text otherwise. The trace is serialized
* from getTraceAsString() because json_encode() of a Throwable yields an
* empty object: its properties are protected.
*
* @param \Throwable $exception
*
* @return void
*/
public static function defaultException(\Throwable $exception): void
{
$code = $exception->getCode();
http_response_code(is_int($code) && $code >= 400 && $code <= 599 ? $code : 500);
$accept = $_SERVER['HTTP_ACCEPT'] ?? '';
if (str_contains($accept, 'application/json')) {
header('Content-Type: application/json');
print(json_encode([
'error' => $exception->getMessage(),
'exception' => get_class($exception),
'file' => $exception->getFile(),
'line' => $exception->getLine(),
'trace' => explode(PHP_EOL, $exception->getTraceAsString()),
]));
return;
}
print($exception->getMessage() . PHP_EOL . $exception->getTraceAsString());
}
/**
* __construct
*/
@@ -363,12 +411,19 @@ class Router
/**
* Applies the route configuration.
*
* This method is the framework's error boundary: any \Throwable thrown
* while running the matched route's callback chain, while printing the
* returned data, or while resolving the not-found callback is caught
* here and rendered through $exceptionCallback. A failing handler is
* deliberately left uncaught (double failure falls back to PHP itself).
*
* @param string|null $path (optional) Path to use. If not defined, it detects the current path.
*
* @return void
*/
public static function apply(?string $path = null): void
{
try {
$path = $path ?? static::currentPath();
$routers = match ($_SERVER['REQUEST_METHOD']) { // Selects an array of routers based on the method
'POST' => static::$post,
@@ -408,5 +463,8 @@ class Router
// If no router matches, call $notFoundCallBack
Synapsis::resolve(static::$notFoundCallback);
} catch (\Throwable $exception) {
Synapsis::resolve(static::$exceptionCallback, ['exception' => $exception]);
}
}
}

17
src/Libs/Synapsis.php
View File

@@ -66,11 +66,13 @@ class Synapsis
* Resolves and injects dependencies for a callable and returns its result.
*
* @param callable $action
* @param array<string, mixed> $named Associative array of values injected into the callable's
* parameters by exact name match. Consumed in resolveParameterValues().
*
* @return mixed
* @throws Exception If an unhandled callable type is provided.
*/
public static function resolve(callable $action): mixed
public static function resolve(callable $action, array $named = []): mixed
{
if ($action instanceof Closure) { // If it's an anonymous function
$reflectionCallback = new ReflectionFunction($action);
@@ -90,7 +92,7 @@ class Synapsis
// Get the parameters
return call_user_func_array(
$action,
static::resolveParameterValues($reflectionCallback->getParameters())
static::resolveParameterValues($reflectionCallback->getParameters(), $named)
);
}
@@ -132,11 +134,15 @@ class Synapsis
* Resolves parameter values by injecting dependencies.
*
* @param array<ReflectionParameter> $parameters
* @param array<string, mixed> $named
* Values injected into parameters whose name matches the key,
* taking precedence over optional defaults and DI resolution.
* Keys matching no parameter are ignored.
*
* @return array<mixed>
* @throws Exception If a primitive parameter does not have a default value.
*/
public static function resolveParameterValues(array $parameters): array
public static function resolveParameterValues(array $parameters, array $named = []): array
{
$values = [];
foreach ($parameters as $parameter) {
@@ -144,6 +150,11 @@ class Synapsis
continue;
}
if (array_key_exists($parameter->getName(), $named)) { // Named values win over defaults and DI
$values[] = $named[$parameter->getName()];
continue;
}
if ($parameter->isOptional()) { // Always use the default value first
$values[] = $parameter->getDefaultValue();
continue;