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// Copyright (c) 2006-2008 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 "chrome/browser/sync/engine/syncer_proto_util.h"
#include "chrome/browser/sync/engine/net/server_connection_manager.h"
#include "chrome/browser/sync/engine/syncer.h"
#include "chrome/browser/sync/engine/syncer_util.h"
#include "chrome/browser/sync/protocol/service_constants.h"
#include "chrome/browser/sync/sessions/sync_session.h"
#include "chrome/browser/sync/syncable/directory_manager.h"
#include "chrome/browser/sync/syncable/syncable-inl.h"
#include "chrome/browser/sync/syncable/syncable.h"
using std::string;
using std::stringstream;
using syncable::BASE_VERSION;
using syncable::CTIME;
using syncable::ID;
using syncable::IS_DEL;
using syncable::IS_DIR;
using syncable::IS_UNSYNCED;
using syncable::MTIME;
using syncable::PARENT_ID;
using syncable::ScopedDirLookup;
using syncable::SyncName;
namespace browser_sync {
using sessions::SyncSession;
namespace {
// Time to backoff syncing after receiving a throttled response.
static const int kSyncDelayAfterThrottled = 2 * 60 * 60; // 2 hours
// Verifies the store birthday, alerting/resetting as appropriate if there's a
// mismatch.
bool VerifyResponseBirthday(const ScopedDirLookup& dir,
const ClientToServerResponse* response) {
// Process store birthday.
if (!response->has_store_birthday())
return true;
string birthday = dir->store_birthday();
if (response->store_birthday() == birthday)
return true;
LOG(INFO) << "New store birthday: " << response->store_birthday();
if (!birthday.empty()) {
LOG(ERROR) << "Birthday changed, showing syncer stuck";
return false;
}
dir->set_store_birthday(response->store_birthday());
return true;
}
void LogResponseProfilingData(const ClientToServerResponse& response) {
if (response.has_profiling_data()) {
stringstream response_trace;
response_trace << "Server response trace:";
if (response.profiling_data().has_user_lookup_time()) {
response_trace << " " << "user lookup: " <<
response.profiling_data().user_lookup_time() << "ms";
}
if (response.profiling_data().has_meta_data_write_time()) {
response_trace << " " << "meta write: " <<
response.profiling_data().meta_data_write_time() << "ms";
}
if (response.profiling_data().has_meta_data_read_time()) {
response_trace << " " << "meta read: " <<
response.profiling_data().meta_data_read_time() << "ms";
}
if (response.profiling_data().has_file_data_write_time()) {
response_trace << " " << "file write: " <<
response.profiling_data().file_data_write_time() << "ms";
}
if (response.profiling_data().has_file_data_read_time()) {
response_trace << " " << "file read: " <<
response.profiling_data().file_data_read_time() << "ms";
}
if (response.profiling_data().has_total_request_time()) {
response_trace << " " << "total time: " <<
response.profiling_data().total_request_time() << "ms";
}
LOG(INFO) << response_trace.str();
}
}
} // namespace
// static
bool SyncerProtoUtil::PostClientToServerMessage(ClientToServerMessage* msg,
ClientToServerResponse* response, SyncSession* session) {
bool rv = false;
string tx, rx;
CHECK(response);
ScopedDirLookup dir(session->context()->directory_manager(),
session->context()->account_name());
if (!dir.good())
return false;
string birthday = dir->store_birthday();
if (!birthday.empty()) {
msg->set_store_birthday(birthday);
} else {
LOG(INFO) << "no birthday set";
}
msg->SerializeToString(&tx);
HttpResponse http_response;
ServerConnectionManager::PostBufferParams params = {
tx, &rx, &http_response
};
ServerConnectionManager* scm = session->context()->connection_manager();
if (!scm->PostBufferWithCachedAuth(¶ms)) {
LOG(WARNING) << "Error posting from syncer:" << http_response;
} else {
rv = response->ParseFromString(rx);
}
if (rv) {
if (!VerifyResponseBirthday(dir, response)) {
// TODO(ncarter): Add a unit test for the case where the syncer becomes
// stuck due to a bad birthday.
session->status_controller()->set_syncer_stuck(true);
return false;
}
switch (response->error_code()) {
case ClientToServerResponse::SUCCESS:
if (!response->has_store_birthday() && birthday.empty()) {
LOG(ERROR) <<
"Server didn't provide birthday in proto buffer response.";
rv = false;
}
LogResponseProfilingData(*response);
break;
case ClientToServerResponse::USER_NOT_ACTIVATED:
case ClientToServerResponse::AUTH_INVALID:
case ClientToServerResponse::ACCESS_DENIED:
LOG(INFO) << "Authentication expired, re-requesting";
LOG(INFO) << "Not implemented in syncer yet!!!";
session->set_auth_failure_occurred();
rv = false;
break;
case ClientToServerResponse::NOT_MY_BIRTHDAY:
LOG(WARNING) << "Not my birthday return.";
rv = false;
break;
case ClientToServerResponse::THROTTLED:
LOG(WARNING) << "Client silenced by server.";
session->delegate()->OnSilencedUntil(base::TimeTicks::Now() +
base::TimeDelta::FromSeconds(kSyncDelayAfterThrottled));
rv = false;
break;
default:
NOTREACHED();
break;
}
}
return rv;
}
// static
bool SyncerProtoUtil::Compare(const syncable::Entry& local_entry,
const SyncEntity& server_entry) {
const std::string name = NameFromSyncEntity(server_entry);
CHECK(local_entry.Get(ID) == server_entry.id()) <<
" SyncerProtoUtil::Compare precondition not met.";
CHECK(server_entry.version() == local_entry.Get(BASE_VERSION)) <<
" SyncerProtoUtil::Compare precondition not met.";
CHECK(!local_entry.Get(IS_UNSYNCED)) <<
" SyncerProtoUtil::Compare precondition not met.";
if (local_entry.Get(IS_DEL) && server_entry.deleted())
return true;
if (!ClientAndServerTimeMatch(local_entry.Get(CTIME), server_entry.ctime())) {
LOG(WARNING) << "ctime mismatch";
return false;
}
// These checks are somewhat prolix, but they're easier to debug than a big
// boolean statement.
string client_name = local_entry.Get(syncable::NON_UNIQUE_NAME);
if (client_name != name) {
LOG(WARNING) << "Client name mismatch";
return false;
}
if (local_entry.Get(PARENT_ID) != server_entry.parent_id()) {
LOG(WARNING) << "Parent ID mismatch";
return false;
}
if (local_entry.Get(IS_DIR) != server_entry.IsFolder()) {
LOG(WARNING) << "Dir field mismatch";
return false;
}
if (local_entry.Get(IS_DEL) != server_entry.deleted()) {
LOG(WARNING) << "Deletion mismatch";
return false;
}
if (!local_entry.Get(IS_DIR) &&
!ClientAndServerTimeMatch(local_entry.Get(MTIME),
server_entry.mtime())) {
LOG(WARNING) << "mtime mismatch";
return false;
}
return true;
}
// static
void SyncerProtoUtil::CopyProtoBytesIntoBlob(const std::string& proto_bytes,
syncable::Blob* blob) {
syncable::Blob proto_blob(proto_bytes.begin(), proto_bytes.end());
blob->swap(proto_blob);
}
// static
bool SyncerProtoUtil::ProtoBytesEqualsBlob(const std::string& proto_bytes,
const syncable::Blob& blob) {
if (proto_bytes.size() != blob.size())
return false;
return std::equal(proto_bytes.begin(), proto_bytes.end(), blob.begin());
}
// static
void SyncerProtoUtil::CopyBlobIntoProtoBytes(const syncable::Blob& blob,
std::string* proto_bytes) {
std::string blob_string(blob.begin(), blob.end());
proto_bytes->swap(blob_string);
}
// static
std::string SyncerProtoUtil::NameFromSyncEntity(
const SyncEntity& entry) {
if (entry.has_non_unique_name()) {
return entry.non_unique_name();
}
return entry.name();
}
// static
std::string SyncerProtoUtil::NameFromCommitEntryResponse(
const CommitResponse_EntryResponse& entry) {
if (entry.has_non_unique_name()) {
return entry.non_unique_name();
}
return entry.name();
}
} // namespace browser_sync
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