components/invalidation/ack_handle.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/invalidation/ack_handle.h"
   6
   7 #include <cstddef>
   8 #include "base/rand_util.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/values.h"
  11
  12 namespace syncer {
  13
  14 namespace {
  15 // Hopefully enough bytes for uniqueness.
  16 const size_t kBytesInHandle = 16;
  17 }  // namespace
  18
  19 AckHandle AckHandle::CreateUnique() {
  20   // This isn't a valid UUID, so we don't attempt to format it like one.
  21   uint8 random_bytes[kBytesInHandle];
  22   base::RandBytes(random_bytes, sizeof(random_bytes));
  23   return AckHandle(base::HexEncode(random_bytes, sizeof(random_bytes)),
  24                    base::Time::Now());
  25 }
  26
  27 AckHandle AckHandle::InvalidAckHandle() {
  28   return AckHandle(std::string(), base::Time());
  29 }
  30
  31 bool AckHandle::Equals(const AckHandle& other) const {
  32   return state_ == other.state_ && timestamp_ == other.timestamp_;
  33 }
  34
  35 scoped_ptr<base::DictionaryValue> AckHandle::ToValue() const {
  36   scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  37   value->SetString("state", state_);
  38   value->SetString("timestamp",
  39                    base::Int64ToString(timestamp_.ToInternalValue()));
  40   return value.Pass();
  41 }
  42
  43 bool AckHandle::ResetFromValue(const base::DictionaryValue& value) {
  44   if (!value.GetString("state", &state_))
  45     return false;
  46   std::string timestamp_as_string;
  47   if (!value.GetString("timestamp", &timestamp_as_string))
  48     return false;
  49   int64 timestamp_value;
  50   if (!base::StringToInt64(timestamp_as_string, &timestamp_value))
  51     return false;
  52   timestamp_ = base::Time::FromInternalValue(timestamp_value);
  53   return true;
  54 }
  55
  56 bool AckHandle::IsValid() const {
  57   return !state_.empty();
  58 }
  59
  60 AckHandle::AckHandle(const std::string& state, base::Time timestamp)
  61     : state_(state), timestamp_(timestamp) {
  62 }
  63
  64 AckHandle::~AckHandle() {
  65 }
  66
  67 }  // namespace syncer