Download Service : Added leveldb proto layer

components/download/internal/proto_conversions.cc

+// 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 <utility>
+
+#include "base/memory/ptr_util.h"
+#include "base/time/time.h"
+#include "components/download/internal/proto_conversions.h"
+#include "net/http/http_request_headers.h"
+
+namespace download {
+
+protodb::Entry_State ProtoConversions::RequestStateToProto(Entry::State state) {
+  switch (state) {
+    case Entry::State::NEW:
+      return protodb::Entry_State_NEW;
+    case Entry::State::AVAILABLE:
+      return protodb::Entry_State_AVAILABLE;
+    case Entry::State::ACTIVE:
+      return protodb::Entry_State_ACTIVE;
+    case Entry::State::PAUSED:
+      return protodb::Entry_State_PAUSED;
+    case Entry::State::COMPLETE:
+      return protodb::Entry_State_COMPLETE;
+    case Entry::State::WATCHDOG:
+      return protodb::Entry_State_WATCHDOG;
+  }
+}
+
+Entry::State ProtoConversions::RequestStateFromProto(
+    protodb::Entry_State state) {
+  switch (state) {
+    case protodb::Entry_State_NEW:
+      return Entry::State::NEW;
+    case protodb::Entry_State_AVAILABLE:
+      return Entry::State::AVAILABLE;
+    case protodb::Entry_State_ACTIVE:
+      return Entry::State::ACTIVE;
+    case protodb::Entry_State_PAUSED:
+      return Entry::State::PAUSED;
+    case protodb::Entry_State_COMPLETE:
+      return Entry::State::COMPLETE;
+    case protodb::Entry_State_WATCHDOG:
+      return Entry::State::WATCHDOG;
+  }
+}
+
+protodb::DownloadClient ProtoConversions::DownloadClientToProto(
+    DownloadClient client) {
+  switch (client) {
+    case DownloadClient::INVALID:
+      return protodb::DownloadClient::INVALID;
+    case DownloadClient::TEST:
+      return protodb::DownloadClient::TEST;
+    case DownloadClient::OFFLINE_PAGE_PREFETCH:
+      return protodb::DownloadClient::OFFLINE_PAGE_PREFETCH;
+    case DownloadClient::BOUNDARY:
+      return protodb::DownloadClient::BOUNDARY;
+  }
+}
+
+DownloadClient ProtoConversions::DownloadClientFromProto(
+    protodb::DownloadClient client) {
+  switch (client) {
+    case protodb::DownloadClient::INVALID:
+      return DownloadClient::INVALID;
+    case protodb::DownloadClient::TEST:
+      return DownloadClient::TEST;
+    case protodb::DownloadClient::OFFLINE_PAGE_PREFETCH:
+      return DownloadClient::OFFLINE_PAGE_PREFETCH;
+    case protodb::DownloadClient::BOUNDARY:
+      return DownloadClient::BOUNDARY;
+  }
+}
+
+SchedulingParams::NetworkRequirements
+ProtoConversions::NetworkRequirementsFromProto(
+    protodb::SchedulingParams_NetworkRequirements network_requirements) {
+  switch (network_requirements) {
+    case protodb::SchedulingParams_NetworkRequirements_NONE:
+      return SchedulingParams::NetworkRequirements::NONE;
+    case protodb::SchedulingParams_NetworkRequirements_OPTIMISTIC:
+      return SchedulingParams::NetworkRequirements::OPTIMISTIC;
+    case protodb::SchedulingParams_NetworkRequirements_UNMETERED:
+      return SchedulingParams::NetworkRequirements::UNMETERED;
+  }
+}
+
+protodb::SchedulingParams_NetworkRequirements
+ProtoConversions::NetworkRequirementsToProto(
+    SchedulingParams::NetworkRequirements network_requirements) {
+  switch (network_requirements) {
+    case SchedulingParams::NetworkRequirements::NONE:
+      return protodb::SchedulingParams_NetworkRequirements_NONE;
+    case SchedulingParams::NetworkRequirements::OPTIMISTIC:
+      return protodb::SchedulingParams_NetworkRequirements_OPTIMISTIC;
+    case SchedulingParams::NetworkRequirements::UNMETERED:
+      return protodb::SchedulingParams_NetworkRequirements_UNMETERED;
+  }
+}
+
+SchedulingParams::BatteryRequirements
+ProtoConversions::BatteryRequirementsFromProto(
+    protodb::SchedulingParams_BatteryRequirements battery_requirements) {
+  switch (battery_requirements) {
+    case protodb::SchedulingParams_BatteryRequirements_BATTERY_INSENSITIVE:
+      return SchedulingParams::BatteryRequirements::BATTERY_INSENSITIVE;
+    case protodb::SchedulingParams_BatteryRequirements_BATTERY_SENSITIVE:
+      return SchedulingParams::BatteryRequirements::BATTERY_SENSITIVE;
+  }
+}
+
+protodb::SchedulingParams_BatteryRequirements
+ProtoConversions::BatteryRequirementsToProto(
+    SchedulingParams::BatteryRequirements battery_requirements) {
+  switch (battery_requirements) {
+    case SchedulingParams::BatteryRequirements::BATTERY_INSENSITIVE:
+      return protodb::SchedulingParams_BatteryRequirements_BATTERY_INSENSITIVE;
+    case SchedulingParams::BatteryRequirements::BATTERY_SENSITIVE:
+      return protodb::SchedulingParams_BatteryRequirements_BATTERY_SENSITIVE;
+  }
+}
+
+SchedulingParams::Priority ProtoConversions::SchedulingPriorityFromProto(
+    protodb::SchedulingParams_Priority priority) {
+  switch (priority) {
+    case protodb::SchedulingParams_Priority_LOW:
+      return SchedulingParams::Priority::LOW;
+    case protodb::SchedulingParams_Priority_NORMAL:
+      return SchedulingParams::Priority::NORMAL;
+    case protodb::SchedulingParams_Priority_HIGH:
+      return SchedulingParams::Priority::HIGH;
+    case protodb::SchedulingParams_Priority_UI:
+      return SchedulingParams::Priority::UI;
+  }
+}
+
+protodb::SchedulingParams_Priority ProtoConversions::SchedulingPriorityToProto(
+    SchedulingParams::Priority priority) {
+  switch (priority) {
+    case SchedulingParams::Priority::LOW:
+      return protodb::SchedulingParams_Priority_LOW;
+    case SchedulingParams::Priority::NORMAL:
+      return protodb::SchedulingParams_Priority_NORMAL;
+    case SchedulingParams::Priority::HIGH:
+      return protodb::SchedulingParams_Priority_HIGH;
+    case SchedulingParams::Priority::UI:
+      return protodb::SchedulingParams_Priority_UI;
+  }
+}
+
+SchedulingParams ProtoConversions::SchedulingParamsFromProto(
+    const protodb::SchedulingParams& proto) {
+  SchedulingParams scheduling_params;
+
+  scheduling_params.cancel_time =
+      base::Time::FromInternalValue(proto.cancel_time());

[David Trainor- moved to gerrit, 2017/05/18 19:41:00]

Is this how these are generally saved in Chrome?  Does it make sense to convert
to a standard time format?

[shaktisahu, 2017/05/19 04:54:57]

Yes, this is how it is stored in the download history database.

+  scheduling_params.priority = SchedulingPriorityFromProto(proto.priority());
+  scheduling_params.network_requirements =
+      NetworkRequirementsFromProto(proto.network_requirements());
+  scheduling_params.battery_requirements =
+      BatteryRequirementsFromProto(proto.battery_requirements());
+
+  return scheduling_params;
+}
+
+void ProtoConversions::SchedulingParamsToProto(
+    const SchedulingParams& scheduling_params,
+    protodb::SchedulingParams* proto) {
+  proto->set_cancel_time(scheduling_params.cancel_time.ToInternalValue());
+  proto->set_priority(SchedulingPriorityToProto(scheduling_params.priority));
+  proto->set_network_requirements(
+      NetworkRequirementsToProto(scheduling_params.network_requirements));
+  proto->set_battery_requirements(
+      BatteryRequirementsToProto(scheduling_params.battery_requirements));
+}
+
+RequestParams ProtoConversions::RequestParamsFromProto(
+    const protodb::RequestParams& proto) {
+  RequestParams request_params;
+  request_params.url = GURL(proto.url());
+  request_params.method = proto.method();
+
+  for (int i = 0; i < proto.headers_size(); i++) {
+    protodb::RequestHeader header = proto.headers(i);
+    request_params.request_headers.SetHeader(header.key(), header.value());
+  }
+
+  return request_params;
+}
+
+void ProtoConversions::RequestParamsToProto(const RequestParams& request_params,
+                                            protodb::RequestParams* proto) {
+  proto->set_url(request_params.url.spec());
+  proto->set_method(request_params.method);
+
+  int i = 0;
+  net::HttpRequestHeaders::Iterator iter(request_params.request_headers);
+  while (iter.GetNext()) {
+    protodb::RequestHeader* header = proto->add_headers();
+    header->set_key(iter.name());
+    header->set_value(iter.value());
+    i++;
+  }
+}
+
+Entry ProtoConversions::EntryFromProto(const protodb::Entry& proto) {
+  Entry entry;
+
+  entry.guid = proto.guid();
+  entry.client = DownloadClientFromProto(proto.name_space());
+  entry.scheduling_params =
+      SchedulingParamsFromProto(proto.scheduling_params());
+  entry.request_params = RequestParamsFromProto(proto.request_params());
+  entry.state = RequestStateFromProto(proto.state());
+
+  return entry;
+}
+
+protodb::Entry ProtoConversions::EntryToProto(const Entry& entry) {
+  protodb::Entry proto;
+
+  proto.set_guid(entry.guid);
+  proto.set_name_space(DownloadClientToProto(entry.client));
+  SchedulingParamsToProto(entry.scheduling_params,
+                          proto.mutable_scheduling_params());
+  RequestParamsToProto(entry.request_params, proto.mutable_request_params());
+  proto.set_state(RequestStateToProto(entry.state));
+
+  return proto;
+}
+
+std::unique_ptr<std::vector<Entry>> ProtoConversions::EntryVectorFromProto(
+    std::unique_ptr<std::vector<protodb::Entry>> protos) {
+  auto entries = base::MakeUnique<std::vector<Entry>>();
+  for (auto& proto : *protos) {
+    entries->push_back(EntryFromProto(proto));
+  }
+
+  return entries;
+}
+
+std::unique_ptr<std::vector<protodb::Entry>>
+ProtoConversions::EntryVectorToProto(
+    std::unique_ptr<std::vector<Entry>> entries) {
+  auto protos = base::MakeUnique<std::vector<protodb::Entry>>();
+  for (auto& entry : *entries) {
+    protos->push_back(EntryToProto(entry));
+  }
+
+  return protos;
+}
+
+}  // namespace download