void Client::InternalSendMessage(const google::protobuf::Message& _message) {
if (state_ != CONNECTED) {
LOG(ERROR) << "Client is not connected. Dropping message" << std::endl;
return;
}
// Generate a zero rid.
REQID rid = REQID_Generator::generate_zero_reqid();
// Make the outgoing packet
sp_int32 byte_size = _message.ByteSize();
sp_uint32 sop = OutgoingPacket::SizeRequiredToPackString(_message.GetTypeName()) + REQID_size +
OutgoingPacket::SizeRequiredToPackProtocolBuffer(byte_size);
auto opkt = new OutgoingPacket(sop);
CHECK_EQ(opkt->PackString(_message.GetTypeName()), 0);
CHECK_EQ(opkt->PackREQID(rid), 0);
CHECK_EQ(opkt->PackProtocolBuffer(_message, byte_size), 0);
Connection* conn = static_cast<Connection*>(conn_);
if (conn->sendPacket(opkt, NULL) != 0) {
LOG(ERROR) << "Some problem sending message thru the connection. Dropping message" << std::endl;
delete opkt;
return;
}
return;
}
void Client::SendResponse(REQID _id, const google::protobuf::Message& _response) {
sp_int32 byte_size = _response.ByteSize();
sp_uint32 data_size = OutgoingPacket::SizeRequiredToPackString(_response.GetTypeName()) +
REQID_size + OutgoingPacket::SizeRequiredToPackProtocolBuffer(byte_size);
auto opkt = new OutgoingPacket(data_size);
CHECK_EQ(opkt->PackString(_response.GetTypeName()), 0);
CHECK_EQ(opkt->PackREQID(_id), 0);
CHECK_EQ(opkt->PackProtocolBuffer(_response, byte_size), 0);
InternalSendResponse(opkt);
return;
}
inline void post(const process::UPID& to,
const google::protobuf::Message& message)
{
std::string data;
message.SerializeToString(&data);
post(to, message.GetTypeName(), data.data(), data.size());
}
void send(const process::UPID& to,
const google::protobuf::Message& message)
{
std::string data;
message.SerializeToString(&data);
process::Process<T>::send(to, message.GetTypeName(), std::move(data));
}
void ProtobufCodec::fillEmptyBuffer(netlib::Buffer *buf,const google::protobuf::Message &message)
{
assert(buf->readableSize() == 0);
const std::string &typeName = message.GetTypeName();
//类型名字长度包含'/0'
int32_t nameLen = static_cast<int32_t>(typeName.size() + 1);
//消息长度
int byte_size = message.ByteSize();
buf->makeSureEnough(byte_size);
//总长度
int32_t len = nameLen + kHeaderLen + byte_size;
buf->appendInt32(len);
//将名字长度和名字加入到buffer中去
buf->appendInt32(nameLen);
buf->append(typeName.c_str(),nameLen);
uint8_t *start = reinterpret_cast<uint8_t *>(buf->getWritePeek());
//将消息从start位置开始序列化
uint8_t *end = message.SerializeWithCachedSizesToArray(start);
buf->moveWriteIndex(byte_size);
assert(end - start == byte_size);
}
std::string CTcpCode::Encode(const google::protobuf::Message& message)
{
std::string result;
result.resize(PKGHEAD_FIELD_SIZE); // 预留消息头的前四个字节
// 添加消息类型长度和消息类型具体内容
const std::string& type_name = message.GetTypeName();
int name_len = static_cast<int>(type_name.size()+1);
int be32 = ::htonl(name_len);
result.append(reinterpret_cast<char*>(&be32), sizeof(be32));
result.append(type_name.c_str(), name_len);
// 将protobuf message协议数据添加至result中
bool succeed = message.AppendToString(&result);
if(succeed)
{
// 计算消息体总长度值,并添加至消息头顶部
int len = ::htonl(result.size());
std::copy(reinterpret_cast<char*>(&len), reinterpret_cast<char*>(&len) + sizeof(len), result.begin());
DLOG(INFO) << "encode message ok, name=" << type_name.c_str() << ", len=" << len;
}
else
{
LOG(ERROR) << "encode message error, name=" << type_name.c_str();
result.clear();
}
return result;
}
static void FillBuffer(std::string &buf, const google::protobuf::Message& message)
{
typedef google::protobuf::int32 int32;
const std::string& typeName = message.GetTypeName();
int32 nameLen = static_cast<int32>(typeName.size()+1);
int32 be32 = nameLen;
buf.resize(sizeof(int32) * 2 + nameLen);
buf.append(reinterpret_cast<char*>(&be32), sizeof be32);
buf.append(typeName.c_str(), nameLen);
bool succeed = message.AppendToString(&buf);
if (succeed)
{
const char* begin = buf.c_str() + kHeaderLen;
// CRC32 or adler32 ??
int32 checkSum = 0;//adler32(1, reinterpret_cast<const Bytef*>(begin), result.size()-kHeaderLen);
int32 be32 = checkSum;
buf.append(reinterpret_cast<char*>(&be32), sizeof(be32));
int32 len = buf.size() - kHeaderLen;
int32 &totalLen = *(int32 *)(buf.data());
totalLen = len;
}
else
{
buf.clear();
}
}
static T evolve(const google::protobuf::Message& message)
{
T t;
string data;
// NOTE: We need to use 'SerializePartialToString' instead of
// 'SerializeToString' because some required fields might not be set
// and we don't want an exception to get thrown.
CHECK(message.SerializePartialToString(&data))
<< "Failed to serialize " << message.GetTypeName()
<< " while evolving to " << t.GetTypeName();
// NOTE: We need to use 'ParsePartialFromString' instead of
// 'ParsePartialFromString' because some required fields might not
// be set and we don't want an exception to get thrown.
CHECK(t.ParsePartialFromString(data))
<< "Failed to parse " << t.GetTypeName()
<< " while evolving from " << message.GetTypeName();
return t;
}
void parseMessageToFILE(const google::protobuf::Message& message, FILE* output, int tabcount = 0) {
using google::protobuf::FieldDescriptor;
using google::protobuf::UnknownField;
using google::protobuf::UnknownFieldSet;
using google::protobuf::EnumValueDescriptor;
auto* reflection = message.GetReflection();
auto* descriptor = message.GetDescriptor();
size_t expected_size = descriptor->field_count();
std::vector< const FieldDescriptor* > ref_fields; // array of known fields in the message
UnknownFieldSet unknown_fields;
ref_fields.reserve(expected_size);
for (int i=0, n=descriptor->field_count(); i<n; ++i) {
auto* field_desc = descriptor->field(i);
ref_fields.push_back(field_desc);
}
fprintf(output, "%s\n", /*std::string(tabcount,' ').c_str(),*/ message.GetTypeName().c_str());
++tabcount;
for(const auto& ref : ref_fields) {
switch(ref->cpp_type()) {
case FieldDescriptor::CPPTYPE_INT32 : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<google::protobuf::int32>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetInt32(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_INT64 : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<google::protobuf::int64>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetInt64(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_UINT32 : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<google::protobuf::uint32>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetUInt32(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_UINT64 : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<google::protobuf::uint64>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetUInt64(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_DOUBLE : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<double>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetDouble(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_FLOAT : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<float>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetFloat(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_BOOL : {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedField<bool>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetBool(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_ENUM : {
// Enums are a little akward...
if (ref->is_repeated()) {
for (int i=0, n=reflection->FieldSize(message, ref); i<n; ++i) {
printTypeArray(*reflection->GetEnum(message, ref), ref->camelcase_name(), output, tabcount, i);
}
}else {
printType(*reflection->GetEnum(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_STRING : {
//TODO: Output binary as HEX numbers.
// can't print bytes
if (ref->type() == FieldDescriptor::TYPE_BYTES) {
fprintf(output, "%s%s=<BINARY DATA>\n", std::string(tabcount,' ').c_str(), ref->camelcase_name().c_str());
break;
}
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedPtrField<std::string>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetString(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
case FieldDescriptor::CPPTYPE_MESSAGE: {
if (ref->is_repeated()) {
printRepeatedType(reflection->GetRepeatedPtrField<google::protobuf::Message>(message, ref), ref->camelcase_name(), output, tabcount);
}else {
printType(reflection->GetMessage(message, ref), ref->camelcase_name(), output, tabcount);
}
} break;
}
}
}