95 lines
3.0 KiB
PHP
95 lines
3.0 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\Context;
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use function basename;
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use function count;
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use function debug_backtrace;
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use const DEBUG_BACKTRACE_IGNORE_ARGS;
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use function sprintf;
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use function trigger_error;
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/**
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* @internal
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*/
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final class DebugScope implements ScopeInterface
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{
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private const DEBUG_TRACE_CREATE = '__debug_trace_create';
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private const DEBUG_TRACE_DETACH = '__debug_trace_detach';
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private ContextStorageScopeInterface $scope;
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public function __construct(ContextStorageScopeInterface $node)
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{
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$this->scope = $node;
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$this->scope[self::DEBUG_TRACE_CREATE] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
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}
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public function detach(): int
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{
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$this->scope[self::DEBUG_TRACE_DETACH] ??= debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
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$flags = $this->scope->detach();
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if (($flags & ScopeInterface::DETACHED) !== 0) {
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trigger_error(sprintf(
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'Scope: unexpected call to Scope::detach() for scope #%d, scope was already detached %s',
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spl_object_id($this),
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self::formatBacktrace($this->scope[self::DEBUG_TRACE_DETACH]),
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));
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} elseif (($flags & ScopeInterface::MISMATCH) !== 0) {
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trigger_error(sprintf(
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'Scope: unexpected call to Scope::detach() for scope #%d, scope successfully detached but another scope should have been detached first',
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spl_object_id($this),
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));
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} elseif (($flags & ScopeInterface::INACTIVE) !== 0) {
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trigger_error(sprintf(
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'Scope: unexpected call to Scope::detach() for scope #%d, scope successfully detached from different execution context',
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spl_object_id($this),
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));
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}
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return $flags;
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}
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public function __destruct()
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{
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if (!isset($this->scope[self::DEBUG_TRACE_DETACH])) {
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trigger_error(sprintf(
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'Scope: missing call to Scope::detach() for scope #%d, created %s',
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spl_object_id($this->scope),
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self::formatBacktrace($this->scope[self::DEBUG_TRACE_CREATE]),
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));
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}
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}
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private static function formatBacktrace(array $trace): string
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{
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$s = '';
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for ($i = 0, $n = count($trace) + 1; ++$i < $n;) {
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$s .= "\n\t";
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$s .= 'at ';
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if (isset($trace[$i]['class'])) {
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$s .= strtr($trace[$i]['class'], ['\\' => '.']);
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$s .= '.';
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}
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$s .= strtr($trace[$i]['function'] ?? '{main}', ['\\' => '.']);
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$s .= '(';
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if (isset($trace[$i - 1]['file'])) {
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$s .= basename($trace[$i - 1]['file']);
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if (isset($trace[$i - 1]['line'])) {
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$s .= ':';
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$s .= $trace[$i - 1]['line'];
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}
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} else {
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$s .= 'Unknown Source';
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}
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$s .= ')';
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}
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return $s . "\n";
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}
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}
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