text: // 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 "components/feature_engagement/internal/in_memory_event_store.h"
  
  #include <memory>
  #include <utility>
  #include <vector>
  
  #include "base/bind.h"
  #include "base/feature_list.h"
  #include "base/sequenced_task_runner.h"
  #include "base/single_thread_task_runner.h"
  #include "base/threading/thread_task_runner_handle.h"
  #include "components/feature_engagement/internal/event_store.h"
  
  namespace feature_engagement {
  
  InMemoryEventStore::InMemoryEventStore(
      std::unique_ptr<std::vector<Event>> events)
      : events_(std::move(events)), ready_(false) {}
  
  InMemoryEventStore::InMemoryEventStore()
      : InMemoryEventStore(std::make_unique<std::vector<Event>>()) {}
  
  InMemoryEventStore::~InMemoryEventStore() = default;
  
  void InMemoryEventStore::Load(OnLoadedCallback callback) {
    HandleLoadResult(std::move(callback), true);
  }
  
  bool InMemoryEventStore::IsReady() const {
    return ready_;
  }
  
  void InMemoryEventStore::WriteEvent(const Event& event) {
    // Intentionally ignore all writes.
  }
  
  void InMemoryEventStore::DeleteEvent(const std::string& event_name) {
    // Intentionally ignore all deletes.
  }
  
  void InMemoryEventStore::HandleLoadResult(OnLoadedCallback callback,
                                            bool success) {
    base::ThreadTaskRunnerHandle::Get()->PostTask(
        FROM_HERE,
        base::BindOnce(std::move(callback), success, std::move(events_)));
    ready_ = success;
  }
  
  }  // namespace feature_engagement
  