Add signal to inform about unstable components

Task-number: QTIFW-1197
Change-Id: If9d7941f4c7bfc478daa83dcd73dfa71c9163561
Reviewed-by: Iikka Eklund <iikka.eklund@qt.io>

examples/unstablecomponent/config/config.xml

@@ -7,4 +7,5 @@
     <StartMenuDir>Qt IFW Examples</StartMenuDir>
     <TargetDir>@HomeDir@/IfwExamples/unstablecomponent</TargetDir>
     <AllowUnstableComponents>true</AllowUnstableComponents>
+    <ControlScript>controller.qs</ControlScript>
 </Installer>

examples/unstablecomponent/config/controller.qs

@@ -0,0 +1,10 @@
+function Controller() {
+    installer.unstableComponentFound.connect(unstableComponentFound)
+}
+
+unstableComponentFound = function(type, message, comp)
+{
+    console.log("Unstable component, type: " + type)
+    console.log("Unstable component, message: " + message)
+    console.log("Unstable component, name: " + comp)
+}

src/libs/installer/component.cpp

@@ -524,12 +524,12 @@ void Component::loadComponentScript(const QString &fileName)
                 Component *dependencyComponent = packageManagerCore()->componentByName
                         (PackageManagerCore::checkableName(dependency));
                 if (dependencyComponent && dependencyComponent->isUnstable())
-                    setUnstable();
+                    setUnstable(PackageManagerCore::UnstableError::DepencyToUnstable, QLatin1String("Dependent on unstable component"));
             }
         }
     } catch (const Error &error) {
         if (packageManagerCore()->settings().allowUnstableComponents()) {
-            setUnstable();
+            setUnstable(PackageManagerCore::UnstableError::ScriptLoadingFailed, error.message());
             qWarning() << error.message();
         } else {
             throw error;
@@ -1380,7 +1380,7 @@ bool Component::isUnstable() const
     return scTrue == d->m_vars.value(scUnstable);
 }
 
-void Component::setUnstable()
+void Component::setUnstable(PackageManagerCore::UnstableError error, const QString &errorMessage)
 {
     QList<Component*> dependencies = d->m_core->dependees(this);
     // Mark this component unstable
@@ -1398,6 +1398,8 @@ void Component::setUnstable()
     foreach (Component *descendant, this->descendantComponents()) {
         descendant->markComponentUnstable();
     }
+    QMetaEnum metaEnum = QMetaEnum::fromType<PackageManagerCore::UnstableError>();
+    emit packageManagerCore()->unstableComponentFound(QLatin1String(metaEnum.valueToKey(error)), errorMessage, this->name());
 }
 
 /*!

src/libs/installer/component.h

@@ -32,6 +32,7 @@
 #include "constants.h"
 #include "component_p.h"
 #include "qinstallerglobal.h"
+#include "packagemanagercore.h"
 
 #include <QtCore/QDir>
 #include <QtCore/QMetaType>
@@ -43,8 +44,6 @@ QT_FORWARD_DECLARE_CLASS(QQmlV4Function)
 
 namespace QInstaller {
 
-class PackageManagerCore;
-
 class INSTALLER_EXPORT Component : public QObject, public ComponentModelHelper
 {
     Q_OBJECT
@@ -184,7 +183,7 @@ public:
     Q_INVOKABLE bool componentChangeRequested();
 
     bool isUnstable() const;
-    void setUnstable();
+    void setUnstable(PackageManagerCore::UnstableError error, const QString &errorMessage = QString());
 
     bool isVirtual() const;
     bool isSelected() const;

src/libs/installer/installercalculator.cpp

@@ -171,7 +171,7 @@ bool InstallerCalculator::appendComponentToInstall(Component *component, const Q
             qWarning().noquote() << errorMessage;
             m_componentsToInstallError.append(errorMessage);
             if (component->packageManagerCore()->settings().allowUnstableComponents()) {
-                component->setUnstable();
+                component->setUnstable(PackageManagerCore::UnstableError::MissingDependency, errorMessage);
                 continue;
             } else {
                 return false;

src/libs/installer/packagemanagercore.cpp

@@ -2575,8 +2575,10 @@ bool PackageManagerCore::updateComponentData(struct Data &data, Component *compo
             // Check if there are sha checksum mismatch. Component will still show in install tree
             // but is unselectable.
             foreach (const QString packageName, d->m_metadataJob.shaMismatchPackages()) {
-                if (packageName == component->name())
-                    component->setUnstable();
+                if (packageName == component->name()) {
+                    QString errorString = QLatin1String("SHA mismatch detected for component ") + packageName;
+                    component->setUnstable(PackageManagerCore::UnstableError::ShaMismatch, errorString);
+                }
             }
         }
 

src/libs/installer/packagemanagercore.h

@@ -65,6 +65,14 @@ public:
         Protocol::Mode mode = Protocol::Mode::Production);
     ~PackageManagerCore();
 
+    enum UnstableError {
+        DepencyToUnstable = 0,
+        ShaMismatch,
+        ScriptLoadingFailed,
+        MissingDependency
+    };
+     Q_ENUM(UnstableError)
+
     // status
     enum Status {
         Success = EXIT_SUCCESS,
@@ -323,6 +331,7 @@ Q_SIGNALS:
     void coreNetworkSettingsChanged();
 
     void guiObjectChanged(QObject *gui);
+    void unstableComponentFound(const QString &type, const QString &errorMessage, const QString &component);
 
 private:
     struct Data {