rtc_event_end_log.cc

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/*

 *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#include "logging/rtc_event_log/events/rtc_event_end_log.h"

#include <cstdint>

#include <string>

#include <vector>

#include "absl/strings/string_view.h"

#include "api/array_view.h"

#include "api/rtc_event_log/rtc_event.h"

#include "api/units/timestamp.h"

#include "logging/rtc_event_log/events/rtc_event_field_encoding.h"

#include "logging/rtc_event_log/events/rtc_event_field_encoding_parser.h"

#include "logging/rtc_event_log/events/rtc_event_log_parse_status.h"

namespace webrtc {

constexpr RtcEvent::Type RtcEventEndLog::kType;

constexpr EventParameters RtcEventEndLog::event_params_;

RtcEventEndLog::RtcEventEndLog(Timestamp timestamp)

    : RtcEvent(timestamp.us()) {}

RtcEventEndLog::RtcEventEndLog(const RtcEventEndLog& other)

    : RtcEvent(other.timestamp_us_) {}

RtcEventEndLog::~RtcEventEndLog() = default;

std::string RtcEventEndLog::Encode(rtc::ArrayView<const RtcEvent*> batch) {

  EventEncoder encoder(event_params_, batch);

  return encoder.AsString();

RtcEventLogParseStatus RtcEventEndLog::Parse(

    absl::string_view encoded_bytes,

    bool batched,

    std::vector<LoggedStopEvent>& output) {

  EventParser parser;

  auto status = parser.Initialize(encoded_bytes, batched);

  if (!status.ok())

    return status;

  rtc::ArrayView<LoggedStopEvent> output_batch =

      ExtendLoggedBatch(output, parser.NumEventsInBatch());

  constexpr FieldParameters timestamp_params{

      "timestamp_ms", FieldParameters::kTimestampField, FieldType::kVarInt, 64};

  RtcEventLogParseStatusOr<rtc::ArrayView<uint64_t>> result =

      parser.ParseNumericField(timestamp_params);

  if (!result.ok())

    return result.status();

  status = PopulateRtcEventTimestamp(result.value(),

                                     &LoggedStopEvent::timestamp, output_batch);

  if (!status.ok())

    return status;

  return RtcEventLogParseStatus::Success();

}  // namespace webrtc