Files
php-qml/spike/qt/main.cpp
magdev 9655b6fef9 Add Phase 0 spike: end-to-end transport verified
Bare PHP behind FrankenPHP plus a Qt/QML host that spawns it. GET /api/ping
publishes a Mercure event; the QML window receives it back over the SSE
stream. Findings (Caddy directive ordering, Mercure transport scalar,
PR_SET_PDEATHSIG for child cleanup, PHP 8.5 curl_close deprecation, port
collision with system FrankenPHP, pure-QML SSE viability) are recorded in
spike/README.md so Phase 1 starts from a known-good baseline.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02 00:15:50 +02:00

73 lines
2.1 KiB
C++

#include <QCoreApplication>
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QProcess>
#include <QDir>
#include <QFileInfo>
#include <QObject>
#include <QDebug>
#include <csignal>
#include <sys/prctl.h>
// Resolve the spike root by walking up from the running binary
// until we find a directory containing Caddyfile + bin/frankenphp.
static QString resolveSpikeRoot()
{
QDir d(QCoreApplication::applicationDirPath());
for (int i = 0; i < 6; ++i) {
if (QFileInfo(d.filePath("Caddyfile")).exists() &&
QFileInfo(d.filePath("bin/frankenphp")).exists()) {
return d.absolutePath();
}
if (!d.cdUp()) break;
}
qWarning() << "Could not locate spike root from"
<< QCoreApplication::applicationDirPath();
return QCoreApplication::applicationDirPath();
}
// SIGTERM / SIGINT → graceful Qt quit so aboutToQuit cleanup runs.
static void installSignalHandlers()
{
auto handler = +[](int) { QCoreApplication::quit(); };
std::signal(SIGTERM, handler);
std::signal(SIGINT, handler);
}
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
installSignalHandlers();
const QString spikeRoot = resolveSpikeRoot();
qInfo() << "spike root:" << spikeRoot;
QProcess franken;
franken.setProgram(spikeRoot + "/bin/frankenphp");
franken.setArguments({"run", "--config", spikeRoot + "/Caddyfile"});
franken.setWorkingDirectory(spikeRoot);
franken.setProcessChannelMode(QProcess::ForwardedChannels);
// Linux belt-and-suspenders: ask the kernel to SIGTERM the child
// when this process dies, regardless of how (crash, kill -9, etc.).
franken.setChildProcessModifier([] {
prctl(PR_SET_PDEATHSIG, SIGTERM);
});
franken.start();
QObject::connect(&app, &QCoreApplication::aboutToQuit, [&]() {
if (franken.state() == QProcess::NotRunning) return;
franken.terminate();
if (!franken.waitForFinished(2000)) franken.kill();
});
QQmlApplicationEngine engine;
engine.loadFromModule("Spike", "Main");
if (engine.rootObjects().isEmpty()) return -1;
return app.exec();
}