Detect and prevent installing the same package multiple times in parallel

Change-Id: I8aa7e1f520346b6c946b0e1e122808d638ccb52c
Reviewed-by: Bernd Weimer <bernd.weimer@qt.io>
(cherry picked from commit 7309841d99e76577758adb11c5b905004555b338)
Reviewed-by: Robert Griebl <robert.griebl@qt.io>

4 files changed, 41 insertions, 0 deletions

diff --git a/src/manager-lib/installationtask.cpp b/src/manager-lib/installationtask.cpp
index 06e10ac9..7cdd2555 100644
--- a/src/manager-lib/installationtask.cpp
+++ b/src/manager-lib/installationtask.cpp
@@ -321,6 +321,13 @@ void InstallationTask::checkExtractedFile(const QString &file) Q_DECL_NOEXCEPT_E
     }
 
     if (m_foundIcon && m_foundInfo) {
+        bool doubleInstallation = false;
+        QMetaObject::invokeMethod(PackageManager::instance(), [this, &doubleInstallation]() {
+            doubleInstallation = PackageManager::instance()->isPackageInstallationActive(m_packageId);
+        }, Qt::BlockingQueuedConnection);
+        if (doubleInstallation)
+            throw Exception(Error::Package, "Cannot install the same package %1 multiple times in parallel").arg(m_packageId);
+
         qCDebug(LogInstaller) << "emit taskRequestingInstallationAcknowledge" << id() << "for package" << m_package->id();
 
         // this is a temporary just for the signal emission below
diff --git a/src/manager-lib/packagemanager.cpp b/src/manager-lib/packagemanager.cpp
index 301bf80b..8a70b465 100644
--- a/src/manager-lib/packagemanager.cpp
+++ b/src/manager-lib/packagemanager.cpp
@@ -839,6 +839,15 @@ QVariantMap PackageManager::documentLocation() const
     return locationMap(d->documentPath);
 }
 
+bool PackageManager::isPackageInstallationActive(const QString &packageId) const
+{
+    for (const auto *t : qAsConst(d->installationTaskList)) {
+        if (t->packageId() == packageId)
+            return true;
+    }
+    return false;
+}
+
 void PackageManager::cleanupBrokenInstallations() Q_DECL_NOEXCEPT_EXPR(false)
 {
     if (d->cleanupBrokenInstallationsDone)
diff --git a/src/manager-lib/packagemanager.h b/src/manager-lib/packagemanager.h
index ef9863b0..4be96f5d 100644
--- a/src/manager-lib/packagemanager.h
+++ b/src/manager-lib/packagemanager.h
@@ -152,6 +152,8 @@ public:
     QVariantMap installationLocation() const;
     QVariantMap documentLocation() const;
 
+    bool isPackageInstallationActive(const QString &packageId) const;
+
     // Q_SCRIPTABLEs are available via both QML and D-Bus
     Q_SCRIPTABLE QStringList packageIds() const;
     Q_SCRIPTABLE QVariantMap get(const QString &packageId) const;
diff --git a/tests/applicationinstaller/tst_applicationinstaller.cpp b/tests/applicationinstaller/tst_applicationinstaller.cpp
index 309d15b2..d5f7829e 100644
--- a/tests/applicationinstaller/tst_applicationinstaller.cpp
+++ b/tests/applicationinstaller/tst_applicationinstaller.cpp
@@ -120,6 +120,7 @@ private slots:
     void cancelPackageInstallation();
 
     void parallelPackageInstallation();
+    void doublePackageInstallation();
 
     void validateDnsName_data();
     void validateDnsName();
@@ -685,6 +686,28 @@ void tst_PackageManager::parallelPackageInstallation()
     clearSignalSpies();
 }
 
+void tst_PackageManager::doublePackageInstallation()
+{
+    QString task1Id = m_pm->startPackageInstallation(QUrl::fromLocalFile(qL1S(AM_TESTDATA_DIR "packages/test-dev-signed.appkg")));
+    QVERIFY(!task1Id.isEmpty());
+    QVERIFY(m_blockingUntilInstallationAcknowledgeSpy->wait(spyTimeout));
+    QCOMPARE(m_blockingUntilInstallationAcknowledgeSpy->first()[0].toString(), task1Id);
+
+    QString task2Id = m_pm->startPackageInstallation(QUrl::fromLocalFile(qL1S(AM_TESTDATA_DIR "packages/test-dev-signed.appkg")));
+    QVERIFY(!task2Id.isEmpty());
+    m_pm->acknowledgePackageInstallation(task2Id);
+    QVERIFY(m_failedSpy->wait(spyTimeout));
+    QCOMPARE(m_failedSpy->first()[0].toString(), task2Id);
+    QCOMPARE(m_failedSpy->first()[2].toString(), qL1S("Cannot install the same package com.pelagicore.test multiple times in parallel"));
+
+    clearSignalSpies();
+    m_pm->cancelTask(task1Id);
+    QVERIFY(m_failedSpy->wait(spyTimeout));
+    QCOMPARE(m_failedSpy->first()[0].toString(), task1Id);
+
+    clearSignalSpies();
+}
+
 void tst_PackageManager::validateDnsName_data()
 {
     QTest::addColumn<QString>("dnsName");