Implementing client policy and controller.

components/offline_pages/client_policy_controller.cc

+// Copyright 2016 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/offline_pages/client_policy_controller.h"
+
+#include <utility>
+
+#include "base/time/time.h"
+
+using LifetimeType = offline_pages::LifetimePolicy::LifetimeType;
+
+namespace offline_pages {
+
+namespace {
+const char kBookmarkNamespace[] = "bookmark";
+const char kLastNNamespace[] = "last_n";
+}  // namespace
+
+ClientPolicyController::ClientPolicyController() {
+  policies_.clear();
+  // Manually defining client policies for bookmark and last_n.
+  policies_.insert(std::make_pair(
+      kBookmarkNamespace,
+      MakePolicy(kBookmarkNamespace, LifetimeType::TEMPORARY,
+                 base::TimeDelta::FromDays(7), kUnlimitedPages)));
+  policies_.insert(std::make_pair(
+      kLastNNamespace, MakePolicy(kLastNNamespace, LifetimeType::TEMPORARY,
+                                  base::TimeDelta::FromDays(2), 20)));
+  // Fallback policy.
+  policies_.insert(std::make_pair(
+      kDefaultNamespace, MakePolicy(kDefaultNamespace, LifetimeType::TEMPORARY,
+                                    base::TimeDelta::FromDays(1), 10)));
+}
+
+ClientPolicyController::~ClientPolicyController() {}
+
+// static
+const OfflinePageClientPolicy ClientPolicyController::MakePolicy(
+    const std::string& name_space,
+    LifetimeType lifetime_type,
+    const base::TimeDelta& expire_period,
+    int page_limit) {
+  OfflinePageClientPolicy policy(
+      {name_space, {lifetime_type, expire_period, page_limit}});
+  return policy;
+}
+
+const OfflinePageClientPolicy& ClientPolicyController::GetPolicy(
+    const std::string& name_space) const {
+  const auto& iter = policies_.find(name_space);
+  if (iter != policies_.end())
+    return iter->second;
+  // Fallback when the namespace isn't defined.
+  return policies_.at(kDefaultNamespace);
+}
+
+}  // namespace offline_pages