Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/history_report/data_provider.cc

Index: chrome/browser/android/history_report/data_provider.cc
diff --git a/chrome/browser/android/history_report/data_provider.cc b/chrome/browser/android/history_report/data_provider.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e2892793b5bb297109789657993f1463dbff04bc
--- /dev/null
+++ b/chrome/browser/android/history_report/data_provider.cc
@@ -0,0 +1,193 @@
+// Copyright 2015 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 "chrome/browser/android/history_report/data_provider.h"
+#include "base/bind.h"
+#include "base/containers/hash_tables.h"
+#include "base/logging.h"
+#include "base/synchronization/waitable_event.h"
+#include "chrome/browser/android/history_report/delta_file_commons.h"
+#include "chrome/browser/android/history_report/delta_file_service.h"
+#include "chrome/browser/android/history_report/get_all_urls_from_history_task.h"
+#include "chrome/browser/android/history_report/historic_visits_migration_task.h"
+#include "chrome/browser/android/history_report/usage_reports_buffer_service.h"
+#include "chrome/browser/history/history_service_factory.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/bookmarks/browser/bookmark_model.h"
+#include "components/history/core/browser/history_db_task.h"
+#include "components/history/core/browser/history_service.h"
+#include "content/public/browser/browser_thread.h"
+
+using bookmarks::BookmarkModel;
+
+namespace {
+typedef base::hash_map<std::string, BookmarkModel::URLAndTitle*> BookmarkMap;
+
+struct Context {
+  history::HistoryService* history_service;
+  base::CancelableTaskTracker* history_task_tracker;
+  base::WaitableEvent finished;
+
+  Context(history::HistoryService* hservice,
+          base::CancelableTaskTracker* tracker)
+      : history_service(hservice),
+        history_task_tracker(tracker),
+        finished(false, false) {}
+};
+
+void UpdateUrl(Context* context,
+               size_t position,
+               std::vector<history_report::DeltaFileEntryWithData>* urls,
+               bool success,
+               const history::URLRow& url,
+               const history::VisitVector& visits) {
+  history_report::DeltaFileEntryWithData* entry = &((*urls)[position]);
+  if (success) {
+    entry->SetData(url);
+  } else {
+    LOG(WARNING) << "No data for url " << entry->Url();
+  }
+  if (position + 1 == urls->size()) {
+    context->finished.Signal();
+  } else {
+    context->history_service->QueryURL(GURL((*urls)[position + 1].Url()),
+                                       false,
+                                       base::Bind(&UpdateUrl,
+                                                  base::Unretained(context),
+                                                  position + 1,
+                                                  base::Unretained(urls)),
+                                       context->history_task_tracker);
+  }
+}
+
+void QueryUrlsHistoryInUiThread(
+    Context* context,
+    std::vector<history_report::DeltaFileEntryWithData>* urls) {
+  context->history_task_tracker->TryCancelAll();
+  // TODO(haaawk): change history service so that all this data can be
+  //               obtained with a single call to history service.
+  context->history_service->QueryURL(GURL((*urls)[0].Url()),
+                                     false,
+                                     base::Bind(&UpdateUrl,
+                                                base::Unretained(context),
+                                                0,
+                                                base::Unretained(urls)),
+                                     context->history_task_tracker);
+}
+
+void StartVisitMigrationToUsageBufferUiThread(
+    history::HistoryService* history_service,
+    history_report::UsageReportsBufferService* buffer_service,
+    base::WaitableEvent* finished,
+    base::CancelableTaskTracker* task_tracker) {
+  history_service->ScheduleDBTask(
+      scoped_ptr<history::HistoryDBTask>(
+          new history_report::HistoricVisitsMigrationTask(finished,
+                                                          buffer_service)),
+      task_tracker);
+}
+
+}  // namespace
+
+namespace history_report {
+
+DataProvider::DataProvider(Profile* profile,
+                           DeltaFileService* delta_file_service,
+                           BookmarkModel* bookmark_model)
+    : bookmark_model_(bookmark_model),
+      delta_file_service_(delta_file_service) {
+  history_service_ = HistoryServiceFactory::GetForProfile(
+      profile, ServiceAccessType::EXPLICIT_ACCESS);
+}
+
+DataProvider::~DataProvider() {}
+
+scoped_ptr<std::vector<DeltaFileEntryWithData> > DataProvider::Query(
+    int64 last_seq_no,
+    int32 limit) {
+  if (last_seq_no == 0)
+    RecreateLog();
+  scoped_ptr<std::vector<DeltaFileEntryWithData> > entries;
+  scoped_ptr<std::vector<DeltaFileEntryWithData> > valid_entries;
+  do {
+    entries = delta_file_service_->Query(last_seq_no, limit);
+    if (!entries->empty()) {
+      Context context(history_service_,
+                      &history_task_tracker_);
+      content::BrowserThread::PostTask(
+          content::BrowserThread::UI,
+          FROM_HERE,
+          base::Bind(&QueryUrlsHistoryInUiThread,
+                     base::Unretained(&context),
+                     base::Unretained(entries.get())));
+      std::vector<BookmarkModel::URLAndTitle> bookmarks;
+      bookmark_model_->BlockTillLoaded();
+      bookmark_model_->GetBookmarks(&bookmarks);
+      BookmarkMap bookmark_map;
+      for (size_t i = 0; i < bookmarks.size(); ++i) {
+        bookmark_map.insert(
+            make_pair(bookmarks[i].url.spec(), &bookmarks[i]));
+      }
+      context.finished.Wait();
+      for (size_t i = 0; i < entries->size(); ++i) {
+        BookmarkMap::iterator bookmark =
+            bookmark_map.find((*entries)[i].Url());
+        if (bookmark != bookmark_map.end())
+          (*entries)[i].MarkAsBookmark(*(bookmark->second));
+      }
+    }
+
+    valid_entries.reset(new std::vector<DeltaFileEntryWithData>());
+    valid_entries->reserve(entries->size());
+    for (size_t i = 0; i < entries->size(); ++i) {
+      const DeltaFileEntryWithData& entry = (*entries)[i];
+      if (entry.Valid()) valid_entries->push_back(entry);
+      if (entry.SeqNo() > last_seq_no) last_seq_no = entry.SeqNo();
+    }
+  } while (!entries->empty() && valid_entries->empty());
+  return valid_entries.Pass();
+}
+
+void DataProvider::StartVisitMigrationToUsageBuffer(
+    UsageReportsBufferService* buffer_service) {
+  base::WaitableEvent finished(false, false);
+  buffer_service->Clear();
+  content::BrowserThread::PostTask(
+      content::BrowserThread::UI,
+      FROM_HERE,
+      base::Bind(&StartVisitMigrationToUsageBufferUiThread,
+                 base::Unretained(history_service_),
+                 buffer_service,
+                 base::Unretained(&finished),
+                 base::Unretained(&history_task_tracker_)));
+  finished.Wait();
+}
+
+void DataProvider::RecreateLog() {
+  std::vector<std::string> urls;
+  {
+    base::WaitableEvent finished(false, false);
+
+    scoped_ptr<history::HistoryDBTask> task =
+        scoped_ptr<history::HistoryDBTask>(new GetAllUrlsFromHistoryTask(
+          &finished, &urls));
+    content::BrowserThread::PostTask(
+        content::BrowserThread::UI, FROM_HERE,
+        base::Bind(base::IgnoreResult(&history::HistoryService::ScheduleDBTask),
+                   base::Unretained(history_service_), base::Passed(&task),
+                   base::Unretained(&history_task_tracker_)));
+    finished.Wait();
+  }
+
+  std::vector<BookmarkModel::URLAndTitle> bookmarks;
+  bookmark_model_->BlockTillLoaded();
+  bookmark_model_->GetBookmarks(&bookmarks);
+  urls.reserve(urls.size() + bookmarks.size());
+  for (size_t i = 0; i < bookmarks.size(); i++) {
+    urls.push_back(bookmarks[i].url.spec());
+  }
+  delta_file_service_->Recreate(urls);
+}
+
+}  // namespace history_report