//
// Copyright (C) 2012 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "update_engine/payload_state.h"
#include <algorithm>
#include <string>
#include <base/logging.h>
#include <base/strings/string_util.h>
#include <base/strings/stringprintf.h>
#include <metrics/metrics_library.h>
#include <policy/device_policy.h>
#include "update_engine/common/clock.h"
#include "update_engine/common/constants.h"
#include "update_engine/common/error_code_utils.h"
#include "update_engine/common/hardware_interface.h"
#include "update_engine/common/prefs.h"
#include "update_engine/common/utils.h"
#include "update_engine/metrics_utils.h"
#include "update_engine/omaha_request_params.h"
#include "update_engine/payload_consumer/install_plan.h"
#include "update_engine/system_state.h"
using base::Time;
using base::TimeDelta;
using std::min;
using std::string;
namespace chromeos_update_engine {
const TimeDelta PayloadState::kDurationSlack = TimeDelta::FromSeconds(600);
// We want to upperbound backoffs to 16 days
static const int kMaxBackoffDays = 16;
// We want to randomize retry attempts after the backoff by +/- 6 hours.
static const uint32_t kMaxBackoffFuzzMinutes = 12 * 60;
PayloadState::PayloadState()
: prefs_(nullptr),
using_p2p_for_downloading_(false),
p2p_num_attempts_(0),
payload_attempt_number_(0),
full_payload_attempt_number_(0),
url_index_(0),
url_failure_count_(0),
url_switch_count_(0),
attempt_num_bytes_downloaded_(0),
attempt_connection_type_(metrics::ConnectionType::kUnknown),
attempt_error_code_(ErrorCode::kSuccess),
attempt_type_(AttemptType::kUpdate) {
for (int i = 0; i <= kNumDownloadSources; i++)
total_bytes_downloaded_[i] = current_bytes_downloaded_[i] = 0;
}
bool PayloadState::Initialize(SystemState* system_state) {
system_state_ = system_state;
prefs_ = system_state_->prefs();
powerwash_safe_prefs_ = system_state_->powerwash_safe_prefs();
LoadResponseSignature();
LoadPayloadAttemptNumber();
LoadFullPayloadAttemptNumber();
LoadUrlIndex();
LoadUrlFailureCount();
LoadUrlSwitchCount();
LoadBackoffExpiryTime();
LoadUpdateTimestampStart();
// The LoadUpdateDurationUptime() method relies on LoadUpdateTimestampStart()
// being called before it. Don't reorder.
LoadUpdateDurationUptime();
for (int i = 0; i < kNumDownloadSources; i++) {
DownloadSource source = static_cast<DownloadSource>(i);
LoadCurrentBytesDownloaded(source);
LoadTotalBytesDownloaded(source);
}
LoadNumReboots();
LoadNumResponsesSeen();
LoadRollbackVersion();
LoadP2PFirstAttemptTimestamp();
LoadP2PNumAttempts();
return true;
}
void PayloadState::SetResponse(const OmahaResponse& omaha_response) {
// Always store the latest response.
response_ = omaha_response;
// Compute the candidate URLs first as they are used to calculate the
// response signature so that a change in enterprise policy for
// HTTP downloads being enabled or not could be honored as soon as the
// next update check happens.
ComputeCandidateUrls();
// Check if the "signature" of this response (i.e. the fields we care about)
// has changed.
string new_response_signature = CalculateResponseSignature();
bool has_response_changed = (response_signature_ != new_response_signature);
// If the response has changed, we should persist the new signature and
// clear away all the existing state.
if (has_response_changed) {
LOG(INFO) << "Resetting all persisted state as this is a new response";
SetNumResponsesSeen(num_responses_seen_ + 1);
SetResponseSignature(new_response_signature);
ResetPersistedState();
return;
}
// This is the earliest point at which we can validate whether the URL index
// we loaded from the persisted state is a valid value. If the response
// hasn't changed but the URL index is invalid, it's indicative of some
// tampering of the persisted state.
if (static_cast<uint32_t>(url_index_) >= candidate_urls_.size()) {
LOG(INFO) << "Resetting all payload state as the url index seems to have "
"been tampered with";
ResetPersistedState();
return;
}
// Update the current download source which depends on the latest value of
// the response.
UpdateCurrentDownloadSource();
}
void PayloadState::SetUsingP2PForDownloading(bool value) {
using_p2p_for_downloading_ = value;
// Update the current download source which depends on whether we are
// using p2p or not.
UpdateCurrentDownloadSource();
}
void PayloadState::DownloadComplete() {
LOG(INFO) << "Payload downloaded successfully";
IncrementPayloadAttemptNumber();
IncrementFullPayloadAttemptNumber();
}
void PayloadState::DownloadProgress(size_t count) {
if (count == 0)
return;
CalculateUpdateDurationUptime();
UpdateBytesDownloaded(count);
// We've received non-zero bytes from a recent download operation. Since our
// URL failure count is meant to penalize a URL only for consecutive
// failures, downloading bytes successfully means we should reset the failure
// count (as we know at least that the URL is working). In future, we can
// design this to be more sophisticated to check for more intelligent failure
// patterns, but right now, even 1 byte downloaded will mark the URL to be
// good unless it hits 10 (or configured number of) consecutive failures
// again.
if (GetUrlFailureCount() == 0)
return;
LOG(INFO) << "Resetting failure count of Url" << GetUrlIndex()
<< " to 0 as we received " << count << " bytes successfully";
SetUrlFailureCount(0);
}
void PayloadState::AttemptStarted(AttemptType attempt_type) {
// Flush previous state from abnormal attempt failure, if any.
ReportAndClearPersistedAttemptMetrics();
attempt_type_ = attempt_type;
ClockInterface *clock = system_state_->clock();
attempt_start_time_boot_ = clock->GetBootTime();
attempt_start_time_monotonic_ = clock->GetMonotonicTime();
attempt_num_bytes_downloaded_ = 0;
metrics::ConnectionType type;
NetworkConnectionType network_connection_type;
NetworkTethering tethering;
ConnectionManagerInterface* connection_manager =
system_state_->connection_manager();
if (!connection_manager->GetConnectionProperties(&network_connection_type,
&tethering)) {
LOG(ERROR) << "Failed to determine connection type.";
type = metrics::ConnectionType::kUnknown;
} else {
type = metrics_utils::GetConnectionType(network_connection_type, tethering);
}
attempt_connection_type_ = type;
if (attempt_type == AttemptType::kUpdate)
PersistAttemptMetrics();
}
void PayloadState::UpdateResumed() {
LOG(INFO) << "Resuming an update that was previously started.";
UpdateNumReboots();
AttemptStarted(AttemptType::kUpdate);
}
void PayloadState::UpdateRestarted() {
LOG(INFO) << "Starting a new update";
ResetDownloadSourcesOnNewUpdate();
SetNumReboots(0);
AttemptStarted(AttemptType::kUpdate);
}
void PayloadState::UpdateSucceeded() {
// Send the relevant metrics that are tracked in this class to UMA.
CalculateUpdateDurationUptime();
SetUpdateTimestampEnd(system_state_->clock()->GetWallclockTime());
switch (attempt_type_) {
case AttemptType::kUpdate:
CollectAndReportAttemptMetrics(ErrorCode::kSuccess);
CollectAndReportSuccessfulUpdateMetrics();
ClearPersistedAttemptMetrics();
break;
case AttemptType::kRollback:
metrics::ReportRollbackMetrics(system_state_,
metrics::RollbackResult::kSuccess);
break;
}
attempt_error_code_ = ErrorCode::kSuccess;
// Reset the number of responses seen since it counts from the last
// successful update, e.g. now.
SetNumResponsesSeen(0);
CreateSystemUpdatedMarkerFile();
}
void PayloadState::UpdateFailed(ErrorCode error) {
ErrorCode base_error = utils::GetBaseErrorCode(error);
LOG(INFO) << "Updating payload state for error code: " << base_error
<< " (" << utils::ErrorCodeToString(base_error) << ")";
if (candidate_urls_.size() == 0) {
// This means we got this error even before we got a valid Omaha response
// or don't have any valid candidates in the Omaha response.
// So we should not advance the url_index_ in such cases.
LOG(INFO) << "Ignoring failures until we get a valid Omaha response.";
return;
}
switch (attempt_type_) {
case AttemptType::kUpdate:
CollectAndReportAttemptMetrics(base_error);
ClearPersistedAttemptMetrics();
break;
case AttemptType::kRollback:
metrics::ReportRollbackMetrics(system_state_,
metrics::RollbackResult::kFailed);
break;
}
attempt_error_code_ = base_error;
switch (base_error) {
// Errors which are good indicators of a problem with a particular URL or
// the protocol used in the URL or entities in the communication channel
// (e.g. proxies). We should try the next available URL in the next update
// check to quickly recover from these errors.
case ErrorCode::kPayloadHashMismatchError:
case ErrorCode::kPayloadSizeMismatchError:
case ErrorCode::kDownloadPayloadVerificationError:
case ErrorCode::kDownloadPayloadPubKeyVerificationError:
case ErrorCode::kSignedDeltaPayloadExpectedError:
case ErrorCode::kDownloadInvalidMetadataMagicString:
case ErrorCode::kDownloadSignatureMissingInManifest:
case ErrorCode::kDownloadManifestParseError:
case ErrorCode::kDownloadMetadataSignatureError:
case ErrorCode::kDownloadMetadataSignatureVerificationError:
case ErrorCode::kDownloadMetadataSignatureMismatch:
case ErrorCode::kDownloadOperationHashVerificationError:
case ErrorCode::kDownloadOperationExecutionError:
case ErrorCode::kDownloadOperationHashMismatch:
case ErrorCode::kDownloadInvalidMetadataSize:
case ErrorCode::kDownloadInvalidMetadataSignature:
case ErrorCode::kDownloadOperationHashMissingError:
case ErrorCode::kDownloadMetadataSignatureMissingError:
case ErrorCode::kPayloadMismatchedType:
case ErrorCode::kUnsupportedMajorPayloadVersion:
case ErrorCode::kUnsupportedMinorPayloadVersion:
IncrementUrlIndex();
break;
// Errors which seem to be just transient network/communication related
// failures and do not indicate any inherent problem with the URL itself.
// So, we should keep the current URL but just increment the
// failure count to give it more chances. This way, while we maximize our
// chances of downloading from the URLs that appear earlier in the response
// (because download from a local server URL that appears earlier in a
// response is preferable than downloading from the next URL which could be
// a internet URL and thus could be more expensive).
case ErrorCode::kError:
case ErrorCode::kDownloadTransferError:
case ErrorCode::kDownloadWriteError:
case ErrorCode::kDownloadStateInitializationError:
case ErrorCode::kOmahaErrorInHTTPResponse: // Aggregate for HTTP errors.
IncrementFailureCount();
break;
// Errors which are not specific to a URL and hence shouldn't result in
// the URL being penalized. This can happen in two cases:
// 1. We haven't started downloading anything: These errors don't cost us
// anything in terms of actual payload bytes, so we should just do the
// regular retries at the next update check.
// 2. We have successfully downloaded the payload: In this case, the
// payload attempt number would have been incremented and would take care
// of the backoff at the next update check.
// In either case, there's no need to update URL index or failure count.
case ErrorCode::kOmahaRequestError:
case ErrorCode::kOmahaResponseHandlerError:
case ErrorCode::kPostinstallRunnerError:
case ErrorCode::kFilesystemCopierError:
case ErrorCode::kInstallDeviceOpenError:
case ErrorCode::kKernelDeviceOpenError:
case ErrorCode::kDownloadNewPartitionInfoError:
case ErrorCode::kNewRootfsVerificationError:
case ErrorCode::kNewKernelVerificationError:
case ErrorCode::kPostinstallBootedFromFirmwareB:
case ErrorCode::kPostinstallFirmwareRONotUpdatable:
case ErrorCode::kOmahaRequestEmptyResponseError:
case ErrorCode::kOmahaRequestXMLParseError:
case ErrorCode::kOmahaResponseInvalid:
case ErrorCode::kOmahaUpdateIgnoredPerPolicy:
case ErrorCode::kOmahaUpdateDeferredPerPolicy:
case ErrorCode::kOmahaUpdateDeferredForBackoff:
case ErrorCode::kPostinstallPowerwashError:
case ErrorCode::kUpdateCanceledByChannelChange:
case ErrorCode::kOmahaRequestXMLHasEntityDecl:
case ErrorCode::kFilesystemVerifierError:
case ErrorCode::kUserCanceled:
LOG(INFO) << "Not incrementing URL index or failure count for this error";
break;
case ErrorCode::kSuccess: // success code
case ErrorCode::kUmaReportedMax: // not an error code
case ErrorCode::kOmahaRequestHTTPResponseBase: // aggregated already
case ErrorCode::kDevModeFlag: // not an error code
case ErrorCode::kResumedFlag: // not an error code
case ErrorCode::kTestImageFlag: // not an error code
case ErrorCode::kTestOmahaUrlFlag: // not an error code
case ErrorCode::kSpecialFlags: // not an error code
// These shouldn't happen. Enumerating these explicitly here so that we
// can let the compiler warn about new error codes that are added to
// action_processor.h but not added here.
LOG(WARNING) << "Unexpected error code for UpdateFailed";
break;
// Note: Not adding a default here so as to let the compiler warn us of
// any new enums that were added in the .h but not listed in this switch.
}
}
bool PayloadState::ShouldBackoffDownload() {
if (response_.disable_payload_backoff) {
LOG(INFO) << "Payload backoff logic is disabled. "
"Can proceed with the download";
return false;
}
if (GetUsingP2PForDownloading() && !GetP2PUrl().empty()) {
LOG(INFO) << "Payload backoff logic is disabled because download "
<< "will happen from local peer (via p2p).";
return false;
}
if (system_state_->request_params()->interactive()) {
LOG(INFO) << "Payload backoff disabled for interactive update checks.";
return false;
}
if (response_.is_delta_payload) {
// If delta payloads fail, we want to fallback quickly to full payloads as
// they are more likely to succeed. Exponential backoffs would greatly
// slow down the fallback to full payloads. So we don't backoff for delta
// payloads.
LOG(INFO) << "No backoffs for delta payloads. "
<< "Can proceed with the download";
return false;
}
if (!system_state_->hardware()->IsOfficialBuild()) {
// Backoffs are needed only for official builds. We do not want any delays
// or update failures due to backoffs during testing or development.
LOG(INFO) << "No backoffs for test/dev images. "
<< "Can proceed with the download";
return false;
}
if (backoff_expiry_time_.is_null()) {
LOG(INFO) << "No backoff expiry time has been set. "
<< "Can proceed with the download";
return false;
}
if (backoff_expiry_time_ < Time::Now()) {
LOG(INFO) << "The backoff expiry time ("
<< utils::ToString(backoff_expiry_time_)
<< ") has elapsed. Can proceed with the download";
return false;
}
LOG(INFO) << "Cannot proceed with downloads as we need to backoff until "
<< utils::ToString(backoff_expiry_time_);
return true;
}
void PayloadState::Rollback() {
SetRollbackVersion(system_state_->request_params()->app_version());
AttemptStarted(AttemptType::kRollback);
}
void PayloadState::IncrementPayloadAttemptNumber() {
// Update the payload attempt number for both payload types: full and delta.
SetPayloadAttemptNumber(GetPayloadAttemptNumber() + 1);
}
void PayloadState::IncrementFullPayloadAttemptNumber() {
// Update the payload attempt number for full payloads and the backoff time.
if (response_.is_delta_payload) {
LOG(INFO) << "Not incrementing payload attempt number for delta payloads";
return;
}
LOG(INFO) << "Incrementing the full payload attempt number";
SetFullPayloadAttemptNumber(GetFullPayloadAttemptNumber() + 1);
UpdateBackoffExpiryTime();
}
void PayloadState::IncrementUrlIndex() {
uint32_t next_url_index = GetUrlIndex() + 1;
if (next_url_index < candidate_urls_.size()) {
LOG(INFO) << "Incrementing the URL index for next attempt";
SetUrlIndex(next_url_index);
} else {
LOG(INFO) << "Resetting the current URL index (" << GetUrlIndex() << ") to "
<< "0 as we only have " << candidate_urls_.size()
<< " candidate URL(s)";
SetUrlIndex(0);
IncrementPayloadAttemptNumber();
IncrementFullPayloadAttemptNumber();
}
// If we have multiple URLs, record that we just switched to another one
if (candidate_urls_.size() > 1)
SetUrlSwitchCount(url_switch_count_ + 1);
// Whenever we update the URL index, we should also clear the URL failure
// count so we can start over fresh for the new URL.
SetUrlFailureCount(0);
}
void PayloadState::IncrementFailureCount() {
uint32_t next_url_failure_count = GetUrlFailureCount() + 1;
if (next_url_failure_count < response_.max_failure_count_per_url) {
LOG(INFO) << "Incrementing the URL failure count";
SetUrlFailureCount(next_url_failure_count);
} else {
LOG(INFO) << "Reached max number of failures for Url" << GetUrlIndex()
<< ". Trying next available URL";
IncrementUrlIndex();
}
}
void PayloadState::UpdateBackoffExpiryTime() {
if (response_.disable_payload_backoff) {
LOG(INFO) << "Resetting backoff expiry time as payload backoff is disabled";
SetBackoffExpiryTime(Time());
return;
}
if (GetFullPayloadAttemptNumber() == 0) {
SetBackoffExpiryTime(Time());
return;
}
// Since we're doing left-shift below, make sure we don't shift more
// than this. E.g. if int is 4-bytes, don't left-shift more than 30 bits,
// since we don't expect value of kMaxBackoffDays to be more than 100 anyway.
int num_days = 1; // the value to be shifted.
const int kMaxShifts = (sizeof(num_days) * 8) - 2;
// Normal backoff days is 2 raised to (payload_attempt_number - 1).
// E.g. if payload_attempt_number is over 30, limit power to 30.
int power = min(GetFullPayloadAttemptNumber() - 1, kMaxShifts);
// The number of days is the minimum of 2 raised to (payload_attempt_number
// - 1) or kMaxBackoffDays.
num_days = min(num_days << power, kMaxBackoffDays);
// We don't want all retries to happen exactly at the same time when
// retrying after backoff. So add some random minutes to fuzz.
int fuzz_minutes = utils::FuzzInt(0, kMaxBackoffFuzzMinutes);
TimeDelta next_backoff_interval = TimeDelta::FromDays(num_days) +
TimeDelta::FromMinutes(fuzz_minutes);
LOG(INFO) << "Incrementing the backoff expiry time by "
<< utils::FormatTimeDelta(next_backoff_interval);
SetBackoffExpiryTime(Time::Now() + next_backoff_interval);
}
void PayloadState::UpdateCurrentDownloadSource() {
current_download_source_ = kNumDownloadSources;
if (using_p2p_for_downloading_) {
current_download_source_ = kDownloadSourceHttpPeer;
} else if (GetUrlIndex() < candidate_urls_.size()) {
string current_url = candidate_urls_[GetUrlIndex()];
if (base::StartsWith(current_url, "https://",
base::CompareCase::INSENSITIVE_ASCII)) {
current_download_source_ = kDownloadSourceHttpsServer;
} else if (base::StartsWith(current_url, "http://",
base::CompareCase::INSENSITIVE_ASCII)) {
current_download_source_ = kDownloadSourceHttpServer;
}
}
LOG(INFO) << "Current download source: "
<< utils::ToString(current_download_source_);
}
void PayloadState::UpdateBytesDownloaded(size_t count) {
SetCurrentBytesDownloaded(
current_download_source_,
GetCurrentBytesDownloaded(current_download_source_) + count,
false);
SetTotalBytesDownloaded(
current_download_source_,
GetTotalBytesDownloaded(current_download_source_) + count,
false);
attempt_num_bytes_downloaded_ += count;
}
PayloadType PayloadState::CalculatePayloadType() {
PayloadType payload_type;
OmahaRequestParams* params = system_state_->request_params();
if (response_.is_delta_payload) {
payload_type = kPayloadTypeDelta;
} else if (params->delta_okay()) {
payload_type = kPayloadTypeFull;
} else { // Full payload, delta was not allowed by request.
payload_type = kPayloadTypeForcedFull;
}
return payload_type;
}
// TODO(zeuthen): Currently we don't report the UpdateEngine.Attempt.*
// metrics if the attempt ends abnormally, e.g. if the update_engine
// process crashes or the device is rebooted. See
// http://crbug.com/357676
void PayloadState::CollectAndReportAttemptMetrics(ErrorCode code) {
int attempt_number = GetPayloadAttemptNumber();
PayloadType payload_type = CalculatePayloadType();
int64_t payload_size = response_.size;
int64_t payload_bytes_downloaded = attempt_num_bytes_downloaded_;
ClockInterface *clock = system_state_->clock();
TimeDelta duration = clock->GetBootTime() - attempt_start_time_boot_;
TimeDelta duration_uptime = clock->GetMonotonicTime() -
attempt_start_time_monotonic_;
int64_t payload_download_speed_bps = 0;
int64_t usec = duration_uptime.InMicroseconds();
if (usec > 0) {
double sec = static_cast<double>(usec) / Time::kMicrosecondsPerSecond;
double bps = static_cast<double>(payload_bytes_downloaded) / sec;
payload_download_speed_bps = static_cast<int64_t>(bps);
}
DownloadSource download_source = current_download_source_;
metrics::DownloadErrorCode payload_download_error_code =
metrics::DownloadErrorCode::kUnset;
ErrorCode internal_error_code = ErrorCode::kSuccess;
metrics::AttemptResult attempt_result = metrics_utils::GetAttemptResult(code);
// Add additional detail to AttemptResult
switch (attempt_result) {
case metrics::AttemptResult::kPayloadDownloadError:
payload_download_error_code = metrics_utils::GetDownloadErrorCode(code);
break;
case metrics::AttemptResult::kInternalError:
internal_error_code = code;
break;
// Explicit fall-through for cases where we do not have additional
// detail. We avoid the default keyword to force people adding new
// AttemptResult values to visit this code and examine whether
// additional detail is needed.
case metrics::AttemptResult::kUpdateSucceeded:
case metrics::AttemptResult::kMetadataMalformed:
case metrics::AttemptResult::kOperationMalformed:
case metrics::AttemptResult::kOperationExecutionError:
case metrics::AttemptResult::kMetadataVerificationFailed:
case metrics::AttemptResult::kPayloadVerificationFailed:
case metrics::AttemptResult::kVerificationFailed:
case metrics::AttemptResult::kPostInstallFailed:
case metrics::AttemptResult::kAbnormalTermination:
case metrics::AttemptResult::kUpdateCanceled:
case metrics::AttemptResult::kNumConstants:
case metrics::AttemptResult::kUnset:
break;
}
metrics::ReportUpdateAttemptMetrics(system_state_,
attempt_number,
payload_type,
duration,
duration_uptime,
payload_size,
payload_bytes_downloaded,
payload_download_speed_bps,
download_source,
attempt_result,
internal_error_code,
payload_download_error_code,
attempt_connection_type_);
}
void PayloadState::PersistAttemptMetrics() {
// TODO(zeuthen): For now we only persist whether an attempt was in
// progress and not values/metrics related to the attempt. This
// means that when this happens, of all the UpdateEngine.Attempt.*
// metrics, only UpdateEngine.Attempt.Result is reported (with the
// value |kAbnormalTermination|). In the future we might want to
// persist more data so we can report other metrics in the
// UpdateEngine.Attempt.* namespace when this happens.
prefs_->SetBoolean(kPrefsAttemptInProgress, true);
}
void PayloadState::ClearPersistedAttemptMetrics() {
prefs_->Delete(kPrefsAttemptInProgress);
}
void PayloadState::ReportAndClearPersistedAttemptMetrics() {
bool attempt_in_progress = false;
if (!prefs_->GetBoolean(kPrefsAttemptInProgress, &attempt_in_progress))
return;
if (!attempt_in_progress)
return;
metrics::ReportAbnormallyTerminatedUpdateAttemptMetrics(system_state_);
ClearPersistedAttemptMetrics();
}
void PayloadState::CollectAndReportSuccessfulUpdateMetrics() {
string metric;
// Report metrics collected from all known download sources to UMA.
int64_t total_bytes_by_source[kNumDownloadSources];
int64_t successful_bytes = 0;
int64_t total_bytes = 0;
int64_t successful_mbs = 0;
int64_t total_mbs = 0;
for (int i = 0; i < kNumDownloadSources; i++) {
DownloadSource source = static_cast<DownloadSource>(i);
int64_t bytes;
// Only consider this download source (and send byte counts) as
// having been used if we downloaded a non-trivial amount of bytes
// (e.g. at least 1 MiB) that contributed to the final success of
// the update. Otherwise we're going to end up with a lot of
// zero-byte events in the histogram.
bytes = GetCurrentBytesDownloaded(source);
successful_bytes += bytes;
successful_mbs += bytes / kNumBytesInOneMiB;
SetCurrentBytesDownloaded(source, 0, true);
bytes = GetTotalBytesDownloaded(source);
total_bytes_by_source[i] = bytes;
total_bytes += bytes;
total_mbs += bytes / kNumBytesInOneMiB;
SetTotalBytesDownloaded(source, 0, true);
}
int download_overhead_percentage = 0;
if (successful_bytes > 0) {
download_overhead_percentage = (total_bytes - successful_bytes) * 100ULL /
successful_bytes;
}
int url_switch_count = static_cast<int>(url_switch_count_);
int reboot_count = GetNumReboots();
SetNumReboots(0);
TimeDelta duration = GetUpdateDuration();
prefs_->Delete(kPrefsUpdateTimestampStart);
prefs_->Delete(kPrefsUpdateDurationUptime);
PayloadType payload_type = CalculatePayloadType();
int64_t payload_size = response_.size;
int attempt_count = GetPayloadAttemptNumber();
int updates_abandoned_count = num_responses_seen_ - 1;
metrics::ReportSuccessfulUpdateMetrics(system_state_,
attempt_count,
updates_abandoned_count,
payload_type,
payload_size,
total_bytes_by_source,
download_overhead_percentage,
duration,
reboot_count,
url_switch_count);
}
void PayloadState::UpdateNumReboots() {
// We only update the reboot count when the system has been detected to have
// been rebooted.
if (!system_state_->system_rebooted()) {
return;
}
SetNumReboots(GetNumReboots() + 1);
}
void PayloadState::SetNumReboots(uint32_t num_reboots) {
CHECK(prefs_);
num_reboots_ = num_reboots;
prefs_->SetInt64(kPrefsNumReboots, num_reboots);
LOG(INFO) << "Number of Reboots during current update attempt = "
<< num_reboots_;
}
void PayloadState::ResetPersistedState() {
SetPayloadAttemptNumber(0);
SetFullPayloadAttemptNumber(0);
SetUrlIndex(0);
SetUrlFailureCount(0);
SetUrlSwitchCount(0);
UpdateBackoffExpiryTime(); // This will reset the backoff expiry time.
SetUpdateTimestampStart(system_state_->clock()->GetWallclockTime());
SetUpdateTimestampEnd(Time()); // Set to null time
SetUpdateDurationUptime(TimeDelta::FromSeconds(0));
ResetDownloadSourcesOnNewUpdate();
ResetRollbackVersion();
SetP2PNumAttempts(0);
SetP2PFirstAttemptTimestamp(Time()); // Set to null time
SetScatteringWaitPeriod(TimeDelta());
}
void PayloadState::ResetRollbackVersion() {
CHECK(powerwash_safe_prefs_);
rollback_version_ = "";
powerwash_safe_prefs_->Delete(kPrefsRollbackVersion);
}
void PayloadState::ResetDownloadSourcesOnNewUpdate() {
for (int i = 0; i < kNumDownloadSources; i++) {
DownloadSource source = static_cast<DownloadSource>(i);
SetCurrentBytesDownloaded(source, 0, true);
// Note: Not resetting the TotalBytesDownloaded as we want that metric
// to count the bytes downloaded across various update attempts until
// we have successfully applied the update.
}
}
int64_t PayloadState::GetPersistedValue(const string& key) {
CHECK(prefs_);
if (!prefs_->Exists(key))
return 0;
int64_t stored_value;
if (!prefs_->GetInt64(key, &stored_value))
return 0;
if (stored_value < 0) {
LOG(ERROR) << key << ": Invalid value (" << stored_value
<< ") in persisted state. Defaulting to 0";
return 0;
}
return stored_value;
}
string PayloadState::CalculateResponseSignature() {
string response_sign = base::StringPrintf(
"NumURLs = %d\n", static_cast<int>(candidate_urls_.size()));
for (size_t i = 0; i < candidate_urls_.size(); i++)
response_sign += base::StringPrintf("Candidate Url%d = %s\n",
static_cast<int>(i),
candidate_urls_[i].c_str());
response_sign += base::StringPrintf(
"Payload Size = %ju\n"
"Payload Sha256 Hash = %s\n"
"Metadata Size = %ju\n"
"Metadata Signature = %s\n"
"Is Delta Payload = %d\n"
"Max Failure Count Per Url = %d\n"
"Disable Payload Backoff = %d\n",
static_cast<uintmax_t>(response_.size),
response_.hash.c_str(),
static_cast<uintmax_t>(response_.metadata_size),
response_.metadata_signature.c_str(),
response_.is_delta_payload,
response_.max_failure_count_per_url,
response_.disable_payload_backoff);
return response_sign;
}
void PayloadState::LoadResponseSignature() {
CHECK(prefs_);
string stored_value;
if (prefs_->Exists(kPrefsCurrentResponseSignature) &&
prefs_->GetString(kPrefsCurrentResponseSignature, &stored_value)) {
SetResponseSignature(stored_value);
}
}
void PayloadState::SetResponseSignature(const string& response_signature) {
CHECK(prefs_);
response_signature_ = response_signature;
LOG(INFO) << "Current Response Signature = \n" << response_signature_;
prefs_->SetString(kPrefsCurrentResponseSignature, response_signature_);
}
void PayloadState::LoadPayloadAttemptNumber() {
SetPayloadAttemptNumber(GetPersistedValue(kPrefsPayloadAttemptNumber));
}
void PayloadState::LoadFullPayloadAttemptNumber() {
SetFullPayloadAttemptNumber(GetPersistedValue(
kPrefsFullPayloadAttemptNumber));
}
void PayloadState::SetPayloadAttemptNumber(int payload_attempt_number) {
CHECK(prefs_);
payload_attempt_number_ = payload_attempt_number;
LOG(INFO) << "Payload Attempt Number = " << payload_attempt_number_;
prefs_->SetInt64(kPrefsPayloadAttemptNumber, payload_attempt_number_);
}
void PayloadState::SetFullPayloadAttemptNumber(
int full_payload_attempt_number) {
CHECK(prefs_);
full_payload_attempt_number_ = full_payload_attempt_number;
LOG(INFO) << "Full Payload Attempt Number = " << full_payload_attempt_number_;
prefs_->SetInt64(kPrefsFullPayloadAttemptNumber,
full_payload_attempt_number_);
}
void PayloadState::LoadUrlIndex() {
SetUrlIndex(GetPersistedValue(kPrefsCurrentUrlIndex));
}
void PayloadState::SetUrlIndex(uint32_t url_index) {
CHECK(prefs_);
url_index_ = url_index;
LOG(INFO) << "Current URL Index = " << url_index_;
prefs_->SetInt64(kPrefsCurrentUrlIndex, url_index_);
// Also update the download source, which is purely dependent on the
// current URL index alone.
UpdateCurrentDownloadSource();
}
void PayloadState::LoadScatteringWaitPeriod() {
SetScatteringWaitPeriod(
TimeDelta::FromSeconds(GetPersistedValue(kPrefsWallClockWaitPeriod)));
}
void PayloadState::SetScatteringWaitPeriod(TimeDelta wait_period) {
CHECK(prefs_);
scattering_wait_period_ = wait_period;
LOG(INFO) << "Scattering Wait Period (seconds) = "
<< scattering_wait_period_.InSeconds();
if (scattering_wait_period_.InSeconds() > 0) {
prefs_->SetInt64(kPrefsWallClockWaitPeriod,
scattering_wait_period_.InSeconds());
} else {
prefs_->Delete(kPrefsWallClockWaitPeriod);
}
}
void PayloadState::LoadUrlSwitchCount() {
SetUrlSwitchCount(GetPersistedValue(kPrefsUrlSwitchCount));
}
void PayloadState::SetUrlSwitchCount(uint32_t url_switch_count) {
CHECK(prefs_);
url_switch_count_ = url_switch_count;
LOG(INFO) << "URL Switch Count = " << url_switch_count_;
prefs_->SetInt64(kPrefsUrlSwitchCount, url_switch_count_);
}
void PayloadState::LoadUrlFailureCount() {
SetUrlFailureCount(GetPersistedValue(kPrefsCurrentUrlFailureCount));
}
void PayloadState::SetUrlFailureCount(uint32_t url_failure_count) {
CHECK(prefs_);
url_failure_count_ = url_failure_count;
LOG(INFO) << "Current URL (Url" << GetUrlIndex()
<< ")'s Failure Count = " << url_failure_count_;
prefs_->SetInt64(kPrefsCurrentUrlFailureCount, url_failure_count_);
}
void PayloadState::LoadBackoffExpiryTime() {
CHECK(prefs_);
int64_t stored_value;
if (!prefs_->Exists(kPrefsBackoffExpiryTime))
return;
if (!prefs_->GetInt64(kPrefsBackoffExpiryTime, &stored_value))
return;
Time stored_time = Time::FromInternalValue(stored_value);
if (stored_time > Time::Now() + TimeDelta::FromDays(kMaxBackoffDays)) {
LOG(ERROR) << "Invalid backoff expiry time ("
<< utils::ToString(stored_time)
<< ") in persisted state. Resetting.";
stored_time = Time();
}
SetBackoffExpiryTime(stored_time);
}
void PayloadState::SetBackoffExpiryTime(const Time& new_time) {
CHECK(prefs_);
backoff_expiry_time_ = new_time;
LOG(INFO) << "Backoff Expiry Time = "
<< utils::ToString(backoff_expiry_time_);
prefs_->SetInt64(kPrefsBackoffExpiryTime,
backoff_expiry_time_.ToInternalValue());
}
TimeDelta PayloadState::GetUpdateDuration() {
Time end_time = update_timestamp_end_.is_null()
? system_state_->clock()->GetWallclockTime() :
update_timestamp_end_;
return end_time - update_timestamp_start_;
}
void PayloadState::LoadUpdateTimestampStart() {
int64_t stored_value;
Time stored_time;
CHECK(prefs_);
Time now = system_state_->clock()->GetWallclockTime();
if (!prefs_->Exists(kPrefsUpdateTimestampStart)) {
// The preference missing is not unexpected - in that case, just
// use the current time as start time
stored_time = now;
} else if (!prefs_->GetInt64(kPrefsUpdateTimestampStart, &stored_value)) {
LOG(ERROR) << "Invalid UpdateTimestampStart value. Resetting.";
stored_time = now;
} else {
stored_time = Time::FromInternalValue(stored_value);
}
// Sanity check: If the time read from disk is in the future
// (modulo some slack to account for possible NTP drift
// adjustments), something is fishy and we should report and
// reset.
TimeDelta duration_according_to_stored_time = now - stored_time;
if (duration_according_to_stored_time < -kDurationSlack) {
LOG(ERROR) << "The UpdateTimestampStart value ("
<< utils::ToString(stored_time)
<< ") in persisted state is "
<< utils::FormatTimeDelta(duration_according_to_stored_time)
<< " in the future. Resetting.";
stored_time = now;
}
SetUpdateTimestampStart(stored_time);
}
void PayloadState::SetUpdateTimestampStart(const Time& value) {
CHECK(prefs_);
update_timestamp_start_ = value;
prefs_->SetInt64(kPrefsUpdateTimestampStart,
update_timestamp_start_.ToInternalValue());
LOG(INFO) << "Update Timestamp Start = "
<< utils::ToString(update_timestamp_start_);
}
void PayloadState::SetUpdateTimestampEnd(const Time& value) {
update_timestamp_end_ = value;
LOG(INFO) << "Update Timestamp End = "
<< utils::ToString(update_timestamp_end_);
}
TimeDelta PayloadState::GetUpdateDurationUptime() {
return update_duration_uptime_;
}
void PayloadState::LoadUpdateDurationUptime() {
int64_t stored_value;
TimeDelta stored_delta;
CHECK(prefs_);
if (!prefs_->Exists(kPrefsUpdateDurationUptime)) {
// The preference missing is not unexpected - in that case, just
// we'll use zero as the delta
} else if (!prefs_->GetInt64(kPrefsUpdateDurationUptime, &stored_value)) {
LOG(ERROR) << "Invalid UpdateDurationUptime value. Resetting.";
stored_delta = TimeDelta::FromSeconds(0);
} else {
stored_delta = TimeDelta::FromInternalValue(stored_value);
}
// Sanity-check: Uptime can never be greater than the wall-clock
// difference (modulo some slack). If it is, report and reset
// to the wall-clock difference.
TimeDelta diff = GetUpdateDuration() - stored_delta;
if (diff < -kDurationSlack) {
LOG(ERROR) << "The UpdateDurationUptime value ("
<< utils::FormatTimeDelta(stored_delta)
<< ") in persisted state is "
<< utils::FormatTimeDelta(diff)
<< " larger than the wall-clock delta. Resetting.";
stored_delta = update_duration_current_;
}
SetUpdateDurationUptime(stored_delta);
}
void PayloadState::LoadNumReboots() {
SetNumReboots(GetPersistedValue(kPrefsNumReboots));
}
void PayloadState::LoadRollbackVersion() {
CHECK(powerwash_safe_prefs_);
string rollback_version;
if (powerwash_safe_prefs_->GetString(kPrefsRollbackVersion,
&rollback_version)) {
SetRollbackVersion(rollback_version);
}
}
void PayloadState::SetRollbackVersion(const string& rollback_version) {
CHECK(powerwash_safe_prefs_);
LOG(INFO) << "Blacklisting version "<< rollback_version;
rollback_version_ = rollback_version;
powerwash_safe_prefs_->SetString(kPrefsRollbackVersion, rollback_version);
}
void PayloadState::SetUpdateDurationUptimeExtended(const TimeDelta& value,
const Time& timestamp,
bool use_logging) {
CHECK(prefs_);
update_duration_uptime_ = value;
update_duration_uptime_timestamp_ = timestamp;
prefs_->SetInt64(kPrefsUpdateDurationUptime,
update_duration_uptime_.ToInternalValue());
if (use_logging) {
LOG(INFO) << "Update Duration Uptime = "
<< utils::FormatTimeDelta(update_duration_uptime_);
}
}
void PayloadState::SetUpdateDurationUptime(const TimeDelta& value) {
Time now = system_state_->clock()->GetMonotonicTime();
SetUpdateDurationUptimeExtended(value, now, true);
}
void PayloadState::CalculateUpdateDurationUptime() {
Time now = system_state_->clock()->GetMonotonicTime();
TimeDelta uptime_since_last_update = now - update_duration_uptime_timestamp_;
TimeDelta new_uptime = update_duration_uptime_ + uptime_since_last_update;
// We're frequently called so avoid logging this write
SetUpdateDurationUptimeExtended(new_uptime, now, false);
}
string PayloadState::GetPrefsKey(const string& prefix, DownloadSource source) {
return prefix + "-from-" + utils::ToString(source);
}
void PayloadState::LoadCurrentBytesDownloaded(DownloadSource source) {
string key = GetPrefsKey(kPrefsCurrentBytesDownloaded, source);
SetCurrentBytesDownloaded(source, GetPersistedValue(key), true);
}
void PayloadState::SetCurrentBytesDownloaded(
DownloadSource source,
uint64_t current_bytes_downloaded,
bool log) {
CHECK(prefs_);
if (source >= kNumDownloadSources)
return;
// Update the in-memory value.
current_bytes_downloaded_[source] = current_bytes_downloaded;
string prefs_key = GetPrefsKey(kPrefsCurrentBytesDownloaded, source);
prefs_->SetInt64(prefs_key, current_bytes_downloaded);
LOG_IF(INFO, log) << "Current bytes downloaded for "
<< utils::ToString(source) << " = "
<< GetCurrentBytesDownloaded(source);
}
void PayloadState::LoadTotalBytesDownloaded(DownloadSource source) {
string key = GetPrefsKey(kPrefsTotalBytesDownloaded, source);
SetTotalBytesDownloaded(source, GetPersistedValue(key), true);
}
void PayloadState::SetTotalBytesDownloaded(
DownloadSource source,
uint64_t total_bytes_downloaded,
bool log) {
CHECK(prefs_);
if (source >= kNumDownloadSources)
return;
// Update the in-memory value.
total_bytes_downloaded_[source] = total_bytes_downloaded;
// Persist.
string prefs_key = GetPrefsKey(kPrefsTotalBytesDownloaded, source);
prefs_->SetInt64(prefs_key, total_bytes_downloaded);
LOG_IF(INFO, log) << "Total bytes downloaded for "
<< utils::ToString(source) << " = "
<< GetTotalBytesDownloaded(source);
}
void PayloadState::LoadNumResponsesSeen() {
SetNumResponsesSeen(GetPersistedValue(kPrefsNumResponsesSeen));
}
void PayloadState::SetNumResponsesSeen(int num_responses_seen) {
CHECK(prefs_);
num_responses_seen_ = num_responses_seen;
LOG(INFO) << "Num Responses Seen = " << num_responses_seen_;
prefs_->SetInt64(kPrefsNumResponsesSeen, num_responses_seen_);
}
void PayloadState::ComputeCandidateUrls() {
bool http_url_ok = true;
if (system_state_->hardware()->IsOfficialBuild()) {
const policy::DevicePolicy* policy = system_state_->device_policy();
if (policy && policy->GetHttpDownloadsEnabled(&http_url_ok) && !http_url_ok)
LOG(INFO) << "Downloads via HTTP Url are not enabled by device policy";
} else {
LOG(INFO) << "Allowing HTTP downloads for unofficial builds";
http_url_ok = true;
}
candidate_urls_.clear();
for (size_t i = 0; i < response_.payload_urls.size(); i++) {
string candidate_url = response_.payload_urls[i];
if (base::StartsWith(candidate_url, "http://",
base::CompareCase::INSENSITIVE_ASCII) &&
!http_url_ok) {
continue;
}
candidate_urls_.push_back(candidate_url);
LOG(INFO) << "Candidate Url" << (candidate_urls_.size() - 1)
<< ": " << candidate_url;
}
LOG(INFO) << "Found " << candidate_urls_.size() << " candidate URLs "
<< "out of " << response_.payload_urls.size() << " URLs supplied";
}
void PayloadState::CreateSystemUpdatedMarkerFile() {
CHECK(prefs_);
int64_t value = system_state_->clock()->GetWallclockTime().ToInternalValue();
prefs_->SetInt64(kPrefsSystemUpdatedMarker, value);
}
void PayloadState::BootedIntoUpdate(TimeDelta time_to_reboot) {
// Send |time_to_reboot| as a UMA stat.
string metric = metrics::kMetricTimeToRebootMinutes;
system_state_->metrics_lib()->SendToUMA(metric,
time_to_reboot.InMinutes(),
0, // min: 0 minute
30*24*60, // max: 1 month (approx)
kNumDefaultUmaBuckets);
LOG(INFO) << "Uploading " << utils::FormatTimeDelta(time_to_reboot)
<< " for metric " << metric;
}
void PayloadState::UpdateEngineStarted() {
// Flush previous state from abnormal attempt failure, if any.
ReportAndClearPersistedAttemptMetrics();
// Avoid the UpdateEngineStarted actions if this is not the first time we
// run the update engine since reboot.
if (!system_state_->system_rebooted())
return;
// Figure out if we just booted into a new update
if (prefs_->Exists(kPrefsSystemUpdatedMarker)) {
int64_t stored_value;
if (prefs_->GetInt64(kPrefsSystemUpdatedMarker, &stored_value)) {
Time system_updated_at = Time::FromInternalValue(stored_value);
if (!system_updated_at.is_null()) {
TimeDelta time_to_reboot =
system_state_->clock()->GetWallclockTime() - system_updated_at;
if (time_to_reboot.ToInternalValue() < 0) {
LOG(ERROR) << "time_to_reboot is negative - system_updated_at: "
<< utils::ToString(system_updated_at);
} else {
BootedIntoUpdate(time_to_reboot);
}
}
}
prefs_->Delete(kPrefsSystemUpdatedMarker);
}
// Check if it is needed to send metrics about a failed reboot into a new
// version.
ReportFailedBootIfNeeded();
}
void PayloadState::ReportFailedBootIfNeeded() {
// If the kPrefsTargetVersionInstalledFrom is present, a successfully applied
// payload was marked as ready immediately before the last reboot, and we
// need to check if such payload successfully rebooted or not.
if (prefs_->Exists(kPrefsTargetVersionInstalledFrom)) {
int64_t installed_from = 0;
if (!prefs_->GetInt64(kPrefsTargetVersionInstalledFrom, &installed_from)) {
LOG(ERROR) << "Error reading TargetVersionInstalledFrom on reboot.";
return;
}
// Old Chrome OS devices will write 2 or 4 in this setting, with the
// partition number. We are now using slot numbers (0 or 1) instead, so
// the following comparison will not match if we are comparing an old
// partition number against a new slot number, which is the correct outcome
// since we successfully booted the new update in that case. If the boot
// failed, we will read this value from the same version, so it will always
// be compatible.
if (installed_from == system_state_->boot_control()->GetCurrentSlot()) {
// A reboot was pending, but the chromebook is again in the same
// BootDevice where the update was installed from.
int64_t target_attempt;
if (!prefs_->GetInt64(kPrefsTargetVersionAttempt, &target_attempt)) {
LOG(ERROR) << "Error reading TargetVersionAttempt when "
"TargetVersionInstalledFrom was present.";
target_attempt = 1;
}
// Report the UMA metric of the current boot failure.
string metric = metrics::kMetricFailedUpdateCount;
LOG(INFO) << "Uploading " << target_attempt
<< " (count) for metric " << metric;
system_state_->metrics_lib()->SendToUMA(
metric,
target_attempt,
1, // min value
50, // max value
kNumDefaultUmaBuckets);
} else {
prefs_->Delete(kPrefsTargetVersionAttempt);
prefs_->Delete(kPrefsTargetVersionUniqueId);
}
prefs_->Delete(kPrefsTargetVersionInstalledFrom);
}
}
void PayloadState::ExpectRebootInNewVersion(const string& target_version_uid) {
// Expect to boot into the new partition in the next reboot setting the
// TargetVersion* flags in the Prefs.
string stored_target_version_uid;
string target_version_id;
string target_partition;
int64_t target_attempt;
if (prefs_->Exists(kPrefsTargetVersionUniqueId) &&
prefs_->GetString(kPrefsTargetVersionUniqueId,
&stored_target_version_uid) &&
stored_target_version_uid == target_version_uid) {
if (!prefs_->GetInt64(kPrefsTargetVersionAttempt, &target_attempt))
target_attempt = 0;
} else {
prefs_->SetString(kPrefsTargetVersionUniqueId, target_version_uid);
target_attempt = 0;
}
prefs_->SetInt64(kPrefsTargetVersionAttempt, target_attempt + 1);
prefs_->SetInt64(kPrefsTargetVersionInstalledFrom,
system_state_->boot_control()->GetCurrentSlot());
}
void PayloadState::ResetUpdateStatus() {
// Remove the TargetVersionInstalledFrom pref so that if the machine is
// rebooted the next boot is not flagged as failed to rebooted into the
// new applied payload.
prefs_->Delete(kPrefsTargetVersionInstalledFrom);
// Also decrement the attempt number if it exists.
int64_t target_attempt;
if (prefs_->GetInt64(kPrefsTargetVersionAttempt, &target_attempt))
prefs_->SetInt64(kPrefsTargetVersionAttempt, target_attempt - 1);
}
int PayloadState::GetP2PNumAttempts() {
return p2p_num_attempts_;
}
void PayloadState::SetP2PNumAttempts(int value) {
p2p_num_attempts_ = value;
LOG(INFO) << "p2p Num Attempts = " << p2p_num_attempts_;
CHECK(prefs_);
prefs_->SetInt64(kPrefsP2PNumAttempts, value);
}
void PayloadState::LoadP2PNumAttempts() {
SetP2PNumAttempts(GetPersistedValue(kPrefsP2PNumAttempts));
}
Time PayloadState::GetP2PFirstAttemptTimestamp() {
return p2p_first_attempt_timestamp_;
}
void PayloadState::SetP2PFirstAttemptTimestamp(const Time& time) {
p2p_first_attempt_timestamp_ = time;
LOG(INFO) << "p2p First Attempt Timestamp = "
<< utils::ToString(p2p_first_attempt_timestamp_);
CHECK(prefs_);
int64_t stored_value = time.ToInternalValue();
prefs_->SetInt64(kPrefsP2PFirstAttemptTimestamp, stored_value);
}
void PayloadState::LoadP2PFirstAttemptTimestamp() {
int64_t stored_value = GetPersistedValue(kPrefsP2PFirstAttemptTimestamp);
Time stored_time = Time::FromInternalValue(stored_value);
SetP2PFirstAttemptTimestamp(stored_time);
}
void PayloadState::P2PNewAttempt() {
CHECK(prefs_);
// Set timestamp, if it hasn't been set already
if (p2p_first_attempt_timestamp_.is_null()) {
SetP2PFirstAttemptTimestamp(system_state_->clock()->GetWallclockTime());
}
// Increase number of attempts
SetP2PNumAttempts(GetP2PNumAttempts() + 1);
}
bool PayloadState::P2PAttemptAllowed() {
if (p2p_num_attempts_ > kMaxP2PAttempts) {
LOG(INFO) << "Number of p2p attempts is " << p2p_num_attempts_
<< " which is greater than "
<< kMaxP2PAttempts
<< " - disallowing p2p.";
return false;
}
if (!p2p_first_attempt_timestamp_.is_null()) {
Time now = system_state_->clock()->GetWallclockTime();
TimeDelta time_spent_attempting_p2p = now - p2p_first_attempt_timestamp_;
if (time_spent_attempting_p2p.InSeconds() < 0) {
LOG(ERROR) << "Time spent attempting p2p is negative"
<< " - disallowing p2p.";
return false;
}
if (time_spent_attempting_p2p.InSeconds() > kMaxP2PAttemptTimeSeconds) {
LOG(INFO) << "Time spent attempting p2p is "
<< utils::FormatTimeDelta(time_spent_attempting_p2p)
<< " which is greater than "
<< utils::FormatTimeDelta(TimeDelta::FromSeconds(
kMaxP2PAttemptTimeSeconds))
<< " - disallowing p2p.";
return false;
}
}
return true;
}
} // namespace chromeos_update_engine