TraceMiddleware.php
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<?php
namespace AukeySwrpc\Middlewares;
use Closure;
use AukeySwrpc\Request\Request;
use AukeySwrpc\Response;
use Zipkin\Endpoint;
use Zipkin\Propagation\TraceContext;
use Zipkin\Reporters\Http;
use Zipkin\Samplers\BinarySampler;
use Zipkin\TracingBuilder;
/**
* 链路追踪中间件
* Class TraceMiddleware
*
* @package AukeySwrpc\Middlewares
* @author pengjch 2024310 16:41:6
*/
class TraceMiddleware implements MiddlewareInterface
{
function handle(Request $request, Closure $next): Response
{
$context = $request->getTraceContext();
if (!$context) {
return $next($request);
}
$traceContext = TraceContext::create($context->getTraceID(), $context->getParentID(), null, true);
$endpoint = Endpoint::create($request->getModule());
$reporter = new Http(['endpoint_url' => $context->getReporterUrl()]);
$sampler = BinarySampler::createAsAlwaysSample();
$tracing = TracingBuilder::create()
->havingLocalEndpoint($endpoint)
->havingSampler($sampler)
->havingReporter($reporter)
->build();
$tracer = $tracing->getTracer();
$span = $tracer->newChild($traceContext);
$span->setName($request->getMethod());
$span->start();
$span->tag('请求参数', serialize($request->getParams()));
$request->setTraceContext($span->getContext()->getTraceId(), $span->getContext()
->getSpanId(), $context->getReporterUrl());
$start = microtime(true);
$result = $next($request);
$end = microtime(true);
$span->tag('响应状态码code', $result->code);
$span->tag('响应提示语msg', $result->msg);
$span->tag('响应耗时', $end - $start);
$span->finish();
$tracer->flush();
return $result;
}
}