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// Copyright 2014 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 "sync/engine/model_type_entity.h"
#include "sync/syncable/syncable_util.h"
namespace syncer {
scoped_ptr<ModelTypeEntity> ModelTypeEntity::NewLocalItem(
const std::string& client_tag,
const sync_pb::EntitySpecifics& specifics,
base::Time now) {
return scoped_ptr<ModelTypeEntity>(new ModelTypeEntity(
1,
0,
0,
kUncommittedVersion,
true,
std::string(), // Sync thread will assign the initial ID.
syncable::GenerateSyncableHash(GetModelTypeFromSpecifics(specifics),
client_tag),
client_tag, // As non-unique name.
specifics,
false,
now,
now));
}
scoped_ptr<ModelTypeEntity> ModelTypeEntity::FromServerUpdate(
const std::string& id,
const std::string& client_tag_hash,
const std::string& non_unique_name,
int64 version,
const sync_pb::EntitySpecifics& specifics,
bool deleted,
base::Time ctime,
base::Time mtime) {
return scoped_ptr<ModelTypeEntity>(new ModelTypeEntity(0,
0,
0,
version,
true,
id,
client_tag_hash,
non_unique_name,
specifics,
deleted,
ctime,
mtime));
}
ModelTypeEntity::ModelTypeEntity(int64 sequence_number,
int64 commit_requested_sequence_number,
int64 acked_sequence_number,
int64 base_version,
bool is_dirty,
const std::string& id,
const std::string& client_tag_hash,
const std::string& non_unique_name,
const sync_pb::EntitySpecifics& specifics,
bool deleted,
base::Time ctime,
base::Time mtime)
: sequence_number_(sequence_number),
commit_requested_sequence_number_(commit_requested_sequence_number),
acked_sequence_number_(acked_sequence_number),
base_version_(base_version),
is_dirty_(is_dirty),
id_(id),
client_tag_hash_(client_tag_hash),
non_unique_name_(non_unique_name),
specifics_(specifics),
deleted_(deleted),
ctime_(ctime),
mtime_(mtime) {
}
ModelTypeEntity::~ModelTypeEntity() {
}
bool ModelTypeEntity::IsWriteRequired() const {
return is_dirty_;
}
bool ModelTypeEntity::IsUnsynced() const {
return sequence_number_ > acked_sequence_number_;
}
bool ModelTypeEntity::RequiresCommitRequest() const {
return sequence_number_ > commit_requested_sequence_number_;
}
bool ModelTypeEntity::UpdateIsReflection(int64 update_version) const {
return base_version_ >= update_version;
}
bool ModelTypeEntity::UpdateIsInConflict(int64 update_version) const {
return IsUnsynced() && !UpdateIsReflection(update_version);
}
void ModelTypeEntity::ApplyUpdateFromServer(
int64 update_version,
bool deleted,
const sync_pb::EntitySpecifics& specifics,
base::Time mtime) {
// There was a conflict and the server just won it.
// This implicitly acks all outstanding commits because a received update
// will clobber any pending commits on the sync thread.
acked_sequence_number_ = sequence_number_;
commit_requested_sequence_number_ = sequence_number_;
base_version_ = update_version;
specifics_ = specifics;
mtime_ = mtime;
}
void ModelTypeEntity::MakeLocalChange(
const sync_pb::EntitySpecifics& specifics) {
sequence_number_++;
specifics_ = specifics;
}
void ModelTypeEntity::Delete() {
sequence_number_++;
specifics_.Clear();
deleted_ = true;
}
void ModelTypeEntity::InitializeCommitRequestData(
CommitRequestData* request) const {
request->id = id_;
request->client_tag_hash = client_tag_hash_;
request->sequence_number = sequence_number_;
request->base_version = base_version_;
request->ctime = ctime_;
request->mtime = mtime_;
request->non_unique_name = non_unique_name_;
request->deleted = deleted_;
request->specifics.CopyFrom(specifics_);
}
void ModelTypeEntity::SetCommitRequestInProgress() {
commit_requested_sequence_number_ = sequence_number_;
}
void ModelTypeEntity::ReceiveCommitResponse(const std::string& id,
int64 sequence_number,
int64 response_version) {
id_ = id; // The server can assign us a new ID in a commit response.
acked_sequence_number_ = sequence_number;
base_version_ = response_version;
}
void ModelTypeEntity::ClearTransientSyncState() {
// If we have any unacknowledged commit requests outstatnding, they've been
// dropped and we should forget about them.
commit_requested_sequence_number_ = acked_sequence_number_;
}
void ModelTypeEntity::ClearSyncState() {
base_version_ = kUncommittedVersion;
is_dirty_ = true;
sequence_number_ = 1;
commit_requested_sequence_number_ = 0;
acked_sequence_number_ = 0;
id_.clear();
}
} // namespace syncer
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