105 lines
2.8 KiB
C++
105 lines
2.8 KiB
C++
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#include "BackendConnection.h"
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#include <QNetworkAccessManager>
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#include <QNetworkReply>
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#include <QNetworkRequest>
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#include <QQmlEngine>
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#include <QTimer>
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#include <QUrl>
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namespace PhpQml::Bridge {
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namespace {
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constexpr int kInitialProbeMs = 0;
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constexpr int kProbeIntervalMs = 5000;
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constexpr int kProbeTimeoutMs = 2000;
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} // namespace
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BackendConnection::BackendConnection(QObject* parent)
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: QObject(parent)
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, m_nam(new QNetworkAccessManager(this))
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, m_retryTimer(new QTimer(this))
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{
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m_url = QString::fromUtf8(qgetenv("BRIDGE_URL"));
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m_token = QString::fromUtf8(qgetenv("BRIDGE_TOKEN"));
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if (m_url.isEmpty()) {
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// Dev-mode fallback: matches the spike's hardcoded port and
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// documents the convention. See PLAN.md §11 *Open Questions*
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// (system FrankenPHP collision on :8080).
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m_url = QStringLiteral("http://127.0.0.1:8765");
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}
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m_retryTimer->setSingleShot(false);
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m_retryTimer->setInterval(kProbeIntervalMs);
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connect(m_retryTimer, &QTimer::timeout, this, &BackendConnection::probe);
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QTimer::singleShot(kInitialProbeMs, this, &BackendConnection::probe);
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m_retryTimer->start();
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}
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BackendConnection::~BackendConnection() = default;
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BackendConnection* BackendConnection::create(QQmlEngine* engine, QJSEngine*)
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{
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return new BackendConnection(engine);
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}
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void BackendConnection::restart()
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{
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// No-op in dev mode (Phase 1). Phase 4 re-spawns the bundled child.
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probe();
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}
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void BackendConnection::probe()
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{
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if (m_pendingReply) return;
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QNetworkRequest req;
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req.setUrl(QUrl(m_url + QStringLiteral("/healthz")));
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req.setTransferTimeout(kProbeTimeoutMs);
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if (!m_token.isEmpty()) {
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req.setRawHeader("Authorization", "Bearer " + m_token.toUtf8());
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}
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m_pendingReply = m_nam->get(req);
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connect(m_pendingReply, &QNetworkReply::finished, this, &BackendConnection::onProbeFinished);
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}
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void BackendConnection::onProbeFinished()
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{
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QNetworkReply* reply = m_pendingReply;
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m_pendingReply = nullptr;
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if (!reply) return;
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reply->deleteLater();
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if (reply->error() == QNetworkReply::NoError) {
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const int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
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if (status == 200) {
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setError(QString());
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setState(ConnectionState::Online);
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return;
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}
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setError(QStringLiteral("/healthz returned HTTP %1").arg(status));
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} else {
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setError(reply->errorString());
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}
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setState(ConnectionState::Error);
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}
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void BackendConnection::setState(ConnectionState s)
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{
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if (m_state == s) return;
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m_state = s;
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emit connectionStateChanged();
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}
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void BackendConnection::setError(const QString& msg)
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{
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if (m_error == msg) return;
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m_error = msg;
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emit errorChanged();
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}
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} // namespace PhpQml::Bridge
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