Prepare to call GMS APIs from WebView

android_webview/native/aw_metrics_service_client_impl.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "android_webview/browser/aw_metrics_service_client.h"
+#include "android_webview/native/aw_metrics_service_client_impl.h"
 
 #include "android_webview/common/aw_version_info_values.h"
+#include "android_webview/jni/AwMetricsServiceClient_jni.h"
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/guid.h"
 #include "base/i18n/rtl.h"
 #include "components/metrics/call_stack_profile_metrics_provider.h"
 #include "components/metrics/enabled_state_provider.h"
 #include "components/metrics/gpu/gpu_metrics_provider.h"
 #include "components/metrics/metrics_pref_names.h"
 #include "components/metrics/metrics_service.h"
 #include "components/metrics/metrics_state_manager.h"
 #include "components/metrics/net/net_metrics_log_uploader.h"
 #include "components/metrics/profiler/profiler_metrics_provider.h"
 #include "components/metrics/ui/screen_info_metrics_provider.h"
 #include "components/metrics/url_constants.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace android_webview {
 
-base::LazyInstance<AwMetricsServiceClient>::Leaky g_lazy_instance_;
+base::LazyInstance<AwMetricsServiceClientImpl>::Leaky g_lazy_instance_;
 
 namespace {
 
 const int kUploadIntervalMinutes = 30;
 
 // Callbacks for metrics::MetricsStateManager::Create. Store/LoadClientInfo
 // allow Windows Chrome to back up ClientInfo. They're no-ops for WebView.
 
 void StoreClientInfo(const metrics::ClientInfo& client_info) {}
 
 std::unique_ptr<metrics::ClientInfo> LoadClientInfo() {
   std::unique_ptr<metrics::ClientInfo> client_info;
   return client_info;
 }
 
 // A GUID in text form is composed of 32 hex digits and 4 hyphens.
 const size_t GUID_SIZE = 32 + 4;
 
 void GetOrCreateGUID(const base::FilePath guid_file_path, std::string* guid) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
 
   // Try to read an existing GUID.
   if (base::ReadFileToStringWithMaxSize(guid_file_path, guid, GUID_SIZE)) {
     if (base::IsValidGUID(*guid))
       return;
     else
-      LOG(ERROR) << "Found invalid GUID";
+      LOG(ERROR) << "Overwriting invalid GUID";
   }
 
   // We must write a new GUID.
   *guid = base::GenerateGUID();
-  if (!base::WriteFile(guid_file_path, guid->c_str(), guid->size()))
+  if (!base::WriteFile(guid_file_path, guid->c_str(), guid->size())) {
+    // If writing fails, proceed anyway with the new GUID. It won't be persisted
+    // to the next run, but we can still collect metrics with this 1-time GUID.
     LOG(ERROR) << "Failed to write new GUID";
+  }
   return;
 }
 
 }  // namespace
 
 // static
 AwMetricsServiceClient* AwMetricsServiceClient::GetInstance() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   return g_lazy_instance_.Pointer();
 }
 
-void AwMetricsServiceClient::Initialize(
+void AwMetricsServiceClientImpl::Initialize(
     PrefService* pref_service,
     net::URLRequestContextGetter* request_context,
     const base::FilePath guid_file_path) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  DCHECK(!is_initialized_);
 
+  DCHECK(pref_service_ == nullptr); // Initialize should only happen once.
+  DCHECK(request_context_ == nullptr);
   pref_service_ = pref_service;
   request_context_ = request_context;
 
   std::string* guid = new std::string;
   // Initialization happens on the UI thread, but getting the GUID should happen
   // on the file I/O thread. So we start to initialize, then post to get the
   // GUID, and then pick up where we left off, back on the UI thread, in
   // InitializeWithGUID.
   content::BrowserThread::PostTaskAndReply(
       content::BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&GetOrCreateGUID, guid_file_path, guid),
-      base::Bind(&AwMetricsServiceClient::InitializeWithGUID,
+      base::Bind(&AwMetricsServiceClientImpl::InitializeWithGUID,
                  base::Unretained(this), base::Owned(guid)));
 }
 
-void AwMetricsServiceClient::InitializeWithGUID(std::string* guid) {
+void AwMetricsServiceClientImpl::InitializeWithGUID(std::string* guid) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  DCHECK(!is_initialized_);
 
   pref_service_->SetString(metrics::prefs::kMetricsClientID, *guid);
 
   metrics_state_manager_ = metrics::MetricsStateManager::Create(
       pref_service_, this, base::Bind(&StoreClientInfo),
       base::Bind(&LoadClientInfo));
 
   metrics_service_.reset(new ::metrics::MetricsService(
       metrics_state_manager_.get(), this, pref_service_));
 
@@ skipping 13 matching lines @@
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           new metrics::ProfilerMetricsProvider()));
 
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           new metrics::CallStackProfileMetricsProvider));
 
   metrics_service_->InitializeMetricsRecordingState();
 
-  is_initialized_ = true;
-
-  if (IsReportingEnabled())
-    metrics_service_->Start();
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_AwMetricsServiceClient_nativeInitialized(env);
 }
 
-void AwMetricsServiceClient::SetMetricsEnabled(bool enabled) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  // If the client is already initialized, apply the setting immediately.
-  // Otherwise, it will be applied on initialization.
-  if (is_initialized_ && is_enabled_ != enabled) {
-    if (enabled)
-      metrics_service_->Start();
-    else
-      metrics_service_->Stop();
-  }
-  is_enabled_ = enabled;
-}
-
-bool AwMetricsServiceClient::IsConsentGiven() {
+bool AwMetricsServiceClientImpl::IsConsentGiven() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   return is_enabled_;
 }
 
-metrics::MetricsService* AwMetricsServiceClient::GetMetricsService() {
+void AwMetricsServiceClientImpl::SetMetricsEnabled(bool enabled) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (is_enabled_ != enabled) {
+    if (enabled) {
+      // TODO(paulmiller): Actually enable metrics when the server-side is ready
+      //metrics_service_->Start();
+    } else {
+      metrics_service_->Stop();
+    }
+    is_enabled_ = enabled;
+  }
+}
+
+metrics::MetricsService* AwMetricsServiceClientImpl::GetMetricsService() {
   return metrics_service_.get();
 }
 
 // In Chrome, UMA and Breakpad are enabled/disabled together by the same
 // checkbox and they share the same client ID (a.k.a. GUID). SetMetricsClientId
 // is intended to provide the ID to Breakpad. In WebView, UMA and Breakpad are
 // independent, so this is a no-op.
+void AwMetricsServiceClientImpl::SetMetricsClientId(
+    const std::string& client_id) {}
 
-void AwMetricsServiceClient::SetMetricsClientId(const std::string& client_id) {}
-
-int32_t AwMetricsServiceClient::GetProduct() {
+int32_t AwMetricsServiceClientImpl::GetProduct() {
   return ::metrics::ChromeUserMetricsExtension::ANDROID_WEBVIEW;
 }
 
-std::string AwMetricsServiceClient::GetApplicationLocale() {
+std::string AwMetricsServiceClientImpl::GetApplicationLocale() {
   return base::i18n::GetConfiguredLocale();
 }
 
-bool AwMetricsServiceClient::GetBrand(std::string* brand_code) {
+bool AwMetricsServiceClientImpl::GetBrand(std::string* brand_code) {
   // WebView doesn't use brand codes.
   return false;
 }
 
-metrics::SystemProfileProto::Channel AwMetricsServiceClient::GetChannel() {
+metrics::SystemProfileProto::Channel AwMetricsServiceClientImpl::GetChannel() {
   // "Channel" means stable, beta, etc. WebView doesn't have channel info yet.
   // TODO(paulmiller) Update this once we have channel info.
   return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
 }
 
-std::string AwMetricsServiceClient::GetVersionString() {
+std::string AwMetricsServiceClientImpl::GetVersionString() {
   return PRODUCT_VERSION;
 }
 
-void AwMetricsServiceClient::InitializeSystemProfileMetrics(
+void AwMetricsServiceClientImpl::InitializeSystemProfileMetrics(
     const base::Closure& done_callback) {
   done_callback.Run();
 }
 
-void AwMetricsServiceClient::CollectFinalMetricsForLog(
+void AwMetricsServiceClientImpl::CollectFinalMetricsForLog(
     const base::Closure& done_callback) {
   done_callback.Run();
 }
 
 std::unique_ptr<metrics::MetricsLogUploader>
-AwMetricsServiceClient::CreateUploader(
+AwMetricsServiceClientImpl::CreateUploader(
     const std::string& server_url,
     const std::string& mime_type,
     const base::Callback<void(int)>& on_upload_complete) {
   return std::unique_ptr<::metrics::MetricsLogUploader>(
       new metrics::NetMetricsLogUploader(
           request_context_, server_url, mime_type, on_upload_complete));
 }
 
-base::TimeDelta AwMetricsServiceClient::GetStandardUploadInterval() {
+base::TimeDelta AwMetricsServiceClientImpl::GetStandardUploadInterval() {
   return base::TimeDelta::FromMinutes(kUploadIntervalMinutes);
 }
 
-AwMetricsServiceClient::AwMetricsServiceClient()
-    : is_initialized_(false),
-      is_enabled_(false),
+AwMetricsServiceClientImpl::AwMetricsServiceClientImpl()
+    : is_enabled_(false),
       pref_service_(nullptr),
       request_context_(nullptr) {}
 
-AwMetricsServiceClient::~AwMetricsServiceClient() {}
+AwMetricsServiceClientImpl::~AwMetricsServiceClientImpl() {}
+
+// static
+void SetMetricsEnabled(
+    JNIEnv* env,
+    const base::android::JavaParamRef<jclass>& jcaller,
+    jboolean enabled) {
+  g_lazy_instance_.Pointer()->SetMetricsEnabled(enabled);
+}
+
+bool RegisterAwMetricsServiceClient(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
 
 }  // namespace android_webview