kiosk: Retry failed app data fetch.

- Add KioskAppManager::RetryFailedAppDataFetch that starts fetch for failed
  app data fetch (status == STATUS_ERROR);
- RetryFailedAppDataFetch when kiosk app is added/removed (include policy refrech);
- RetryFailedAppDataFetch on login screen when portal detection is passed;
- Add max auto retry times for underlying URLFetcher's 5xx retry and
  ERR_NETWORK_CHANGED retry in WebstoreDataFetcher;
- KioskAppData sets max retry times to 3 for its webstore data fetch;

BUG=392670

Review URL: https://codereview.chromium.org/386633003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282577 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/app_mode/kiosk_app_data.cc

@@ -336,7 +336,7 @@ void KioskAppData::SetStatus(Status status) {
     case STATUS_ERROR:
       delegate_->OnKioskAppDataLoadFailure(app_id_);
       break;
-  };
+  }
 }
 
 net::URLRequestContextGetter* KioskAppData::GetRequestContextGetter() {
@@ -442,6 +442,7 @@ void KioskAppData::StartFetch() {
       GetRequestContextGetter(),
       GURL(),
       app_id_));
+  webstore_fetcher_->set_max_auto_retries(3);
   webstore_fetcher_->Start();
 }
 

chrome/browser/chromeos/app_mode/kiosk_app_manager.cc

@@ -356,6 +356,13 @@ void KioskAppManager::UpdateAppDataFromProfile(
   app_data->LoadFromInstalledApp(profile, app);
 }
 
+void KioskAppManager::RetryFailedAppDataFetch() {
+  for (size_t i = 0; i < apps_.size(); ++i) {
+    if (apps_[i]->status() == KioskAppData::STATUS_ERROR)
+      apps_[i]->Load();
+  }
+}
+
 void KioskAppManager::AddObserver(KioskAppManagerObserver* observer) {
   observers_.AddObserver(observer);
 }
@@ -469,6 +476,8 @@ void KioskAppManager::UpdateAppData() {
     prefs->Set(apps_[i]->app_id(), new base::DictionaryValue);
   external_cache_->UpdateExtensionsList(prefs.Pass());
 
+  RetryFailedAppDataFetch();
+
   FOR_EACH_OBSERVER(KioskAppManagerObserver, observers_,
                     OnKioskAppsSettingsChanged());
 }

chrome/browser/chromeos/app_mode/kiosk_app_manager.h

@@ -150,6 +150,8 @@ class KioskAppManager : public KioskAppDataDelegate,
                                 Profile* profile,
                                 const extensions::Extension* app);
 
+  void RetryFailedAppDataFetch();
+
   void AddObserver(KioskAppManagerObserver* observer);
   void RemoveObserver(KioskAppManagerObserver* observer);
 

chrome/browser/extensions/webstore_data_fetcher.cc

@@ -29,7 +29,8 @@ WebstoreDataFetcher::WebstoreDataFetcher(
     : delegate_(delegate),
       request_context_(request_context),
       referrer_url_(referrer_url),
-      id_(webstore_item_id) {
+      id_(webstore_item_id),
+      max_auto_retries_(0) {
 }
 
 WebstoreDataFetcher::~WebstoreDataFetcher() {}
@@ -43,6 +44,11 @@ void WebstoreDataFetcher::Start() {
   webstore_data_url_fetcher_->SetReferrer(referrer_url_.spec());
   webstore_data_url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES |
                                            net::LOAD_DISABLE_CACHE);
+  if (max_auto_retries_ > 0) {
+    webstore_data_url_fetcher_->SetMaxRetriesOn5xx(max_auto_retries_);
+    webstore_data_url_fetcher_->SetAutomaticallyRetryOnNetworkChanges(
+        max_auto_retries_);
+  }
   webstore_data_url_fetcher_->Start();
 }
 

chrome/browser/extensions/webstore_data_fetcher.h

@@ -38,6 +38,10 @@ class WebstoreDataFetcher : public base::SupportsWeakPtr<WebstoreDataFetcher>,
 
   void Start();
 
+  void set_max_auto_retries(int max_retries) {
+    max_auto_retries_ = max_retries;
+  }
+
  private:
   void OnJsonParseSuccess(scoped_ptr<base::Value> parsed_json);
   void OnJsonParseFailure(const std::string& error);
@@ -53,6 +57,10 @@ class WebstoreDataFetcher : public base::SupportsWeakPtr<WebstoreDataFetcher>,
   // For fetching webstore JSON data.
   scoped_ptr<net::URLFetcher> webstore_data_url_fetcher_;
 
+  // Maximum auto retry times on server 5xx error or ERR_NETWORK_CHANGED.
+  // Default is 0 which means to use the URLFetcher default behavior.
+  int max_auto_retries_;
+
   DISALLOW_COPY_AND_ASSIGN(WebstoreDataFetcher);
 };
 

chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.cc

@@ -37,14 +37,18 @@ const int kMaxAppIconSize = 160;
 
 }  // namespace
 
-KioskAppMenuHandler::KioskAppMenuHandler()
+KioskAppMenuHandler::KioskAppMenuHandler(
+    const scoped_refptr<NetworkStateInformer>& network_state_informer)
     : weak_ptr_factory_(this),
-      is_webui_initialized_(false) {
+      is_webui_initialized_(false),
+      network_state_informer_(network_state_informer) {
   KioskAppManager::Get()->AddObserver(this);
+  network_state_informer_->AddObserver(this);
 }
 
 KioskAppMenuHandler::~KioskAppMenuHandler() {
   KioskAppManager::Get()->RemoveObserver(this);
+  network_state_informer_->RemoveObserver(this);
 }
 
 void KioskAppMenuHandler::GetLocalizedStrings(
@@ -133,6 +137,7 @@ void KioskAppMenuHandler::HandleInitializeKioskApps(
     const base::ListValue* args) {
   is_webui_initialized_ = true;
   SendKioskApps();
+  UpdateState(ErrorScreenActor::ERROR_REASON_UPDATE);
 }
 
 void KioskAppMenuHandler::HandleKioskAppsLoaded(
@@ -165,4 +170,9 @@ void KioskAppMenuHandler::OnKioskAppDataChanged(const std::string& app_id) {
   SendKioskApps();
 }
 
+void KioskAppMenuHandler::UpdateState(ErrorScreenActor::ErrorReason reason) {
+  if (network_state_informer_->state() == NetworkStateInformer::ONLINE)
+    KioskAppManager::Get()->RetryFailedAppDataFetch();
+}
+
 }  // namespace chromeos

chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.h

@@ -12,6 +12,7 @@
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager_observer.h"
+#include "chrome/browser/ui/webui/chromeos/login/network_state_informer.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 namespace chromeos {
@@ -19,10 +20,13 @@ namespace chromeos {
 // KioskAppMenuHandler supplies kiosk apps data to apps menu on sign-in
 // screen when app mode is enabled and handles "launchKioskApp" request
 // from the apps menu.
-class KioskAppMenuHandler : public content::WebUIMessageHandler,
-                            public KioskAppManagerObserver {
+class KioskAppMenuHandler
+    : public content::WebUIMessageHandler,
+      public KioskAppManagerObserver,
+      public NetworkStateInformer::NetworkStateInformerObserver {
  public:
-  KioskAppMenuHandler();
+  explicit KioskAppMenuHandler(
+      const scoped_refptr<NetworkStateInformer>& network_state_informer);
   virtual ~KioskAppMenuHandler();
 
   void GetLocalizedStrings(base::DictionaryValue* localized_strings);
@@ -46,11 +50,16 @@ class KioskAppMenuHandler : public content::WebUIMessageHandler,
   virtual void OnKioskAppsSettingsChanged() OVERRIDE;
   virtual void OnKioskAppDataChanged(const std::string& app_id) OVERRIDE;
 
+  // NetworkStateInformer::NetworkStateInformerObserver overrides:
+  virtual void UpdateState(ErrorScreenActor::ErrorReason reason) OVERRIDE;
+
   base::WeakPtrFactory<KioskAppMenuHandler> weak_ptr_factory_;
 
   // True when WebUI is initialized. Otherwise don't allow calling JS functions.
   bool is_webui_initialized_;
 
+  scoped_refptr<NetworkStateInformer> network_state_informer_;
+
   DISALLOW_COPY_AND_ASSIGN(KioskAppMenuHandler);
 };
 

chrome/browser/ui/webui/chromeos/login/oobe_ui.cc

@@ -285,7 +285,7 @@ OobeUI::OobeUI(content::WebUI* web_ui, const GURL& url)
   }
 
   // Initialize KioskAppMenuHandler. Note that it is NOT a screen handler.
-  kiosk_app_menu_handler_ = new KioskAppMenuHandler;
+  kiosk_app_menu_handler_ = new KioskAppMenuHandler(network_state_informer_);
   web_ui->AddMessageHandler(kiosk_app_menu_handler_);
 
   base::DictionaryValue localized_strings;