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atbus_msg_handler.cpp
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#include <sstream>
#include "common/string_oprs.h"
#include "detail/buffer.h"
#include "atbus_msg_handler.h"
#include "atbus_node.h"
#include "detail/libatbus_channel_export.h"
#include "libatbus_protocol.h"
#define ATBUS_PROTOCOL_MSG_BODY_MAX ::atbus::protocol::msg::kNodePongRsp
#define ATBUS_PROTOCOL_MSG_BODY_MIN ::atbus::protocol::msg::kCustomCommandReq
namespace atbus {
namespace detail {
const char *get_cmd_name(int cmd) {
const ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::FieldDescriptor *field_desc =
::atbus::protocol::msg::descriptor()->FindFieldByNumber(cmd);
if (field_desc == nullptr) {
return "UNKNOWN";
}
return field_desc->name().c_str();
}
static int forward_data_message(::atbus::node &n, ::atbus::node::msg_builder_ref_t m, uint64_t from_server_id,
uint64_t to_server_id, endpoint **out_endpoint) {
if (0 == to_server_id) {
ATBUS_FUNC_NODE_ERROR(n, nullptr, nullptr, EN_ATBUS_ERR_PARAMS, EN_ATBUS_ERR_PARAMS);
return EN_ATBUS_ERR_PARAMS;
}
if (n.get_id() == to_server_id) {
ATBUS_FUNC_NODE_ERROR(n, nullptr, nullptr, EN_ATBUS_ERR_PARAMS, EN_ATBUS_ERR_PARAMS);
return EN_ATBUS_ERR_PARAMS;
}
// 检查如果发送目标不是来源，则转发失败消息
endpoint *target = nullptr;
connection *target_conn = nullptr;
int ret = n.get_remote_channel(to_server_id, &endpoint::get_data_connection, &target, &target_conn);
if (nullptr != out_endpoint) {
*out_endpoint = target;
}
if (nullptr == target || nullptr == target_conn) {
ATBUS_FUNC_NODE_ERROR(n, target, target_conn, ret, 0);
return ret;
}
if (0 != from_server_id && target->get_id() == from_server_id) {
ret = EN_ATBUS_ERR_ATNODE_SRC_DST_IS_SAME;
ATBUS_FUNC_NODE_ERROR(n, target, target_conn, ret, 0);
return ret;
}
// 重设发送源
::atbus::protocol::msg_head *head = m.mutable_head();
assert(head);
if (head) {
head->set_src_bus_id(n.get_id());
ret = msg_handler::send_msg(n, *target_conn, m);
}
return ret;
}
} // namespace detail
ATBUS_MACRO_API int msg_handler::dispatch_msg(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m, int status,
int errcode) {
static handler_fn_t fns[ATBUS_PROTOCOL_MSG_BODY_MAX + 1] = {nullptr};
if (nullptr == fns[ATBUS_PROTOCOL_MSG_BODY_MIN] || nullptr == fns[ATBUS_PROTOCOL_MSG_BODY_MAX]) {
fns[::atbus::protocol::msg::kDataTransformReq] = msg_handler::on_recv_data_transfer_req;
fns[::atbus::protocol::msg::kDataTransformRsp] = msg_handler::on_recv_data_transfer_rsp;
fns[::atbus::protocol::msg::kCustomCommandReq] = msg_handler::on_recv_custom_cmd_req;
fns[::atbus::protocol::msg::kCustomCommandRsp] = msg_handler::on_recv_custom_cmd_rsp;
fns[::atbus::protocol::msg::kNodeSyncReq] = msg_handler::on_recv_node_sync_req;
fns[::atbus::protocol::msg::kNodeSyncRsp] = msg_handler::on_recv_node_sync_rsp;
fns[::atbus::protocol::msg::kNodeRegisterReq] = msg_handler::on_recv_node_reg_req;
fns[::atbus::protocol::msg::kNodeRegisterRsp] = msg_handler::on_recv_node_reg_rsp;
fns[::atbus::protocol::msg::kNodeConnectSync] = msg_handler::on_recv_node_conn_syn;
fns[::atbus::protocol::msg::kNodePingReq] = msg_handler::on_recv_node_ping;
fns[::atbus::protocol::msg::kNodePongRsp] = msg_handler::on_recv_node_pong;
}
if (!m.has_head()) {
return EN_ATBUS_ERR_BAD_DATA;
}
ATBUS_FUNC_NODE_DEBUG(n, nullptr == conn ? nullptr : conn->get_binding(), conn, &m,
"node recv msg(cmd=%s, type=%d, sequence=%u, ret=%d)", detail::get_cmd_name(m.msg_body_case()),
m.head().type(), m.head().sequence(), m.head().ret());
if (m.msg_body_case() > ATBUS_PROTOCOL_MSG_BODY_MAX || m.msg_body_case() < ATBUS_PROTOCOL_MSG_BODY_MIN) {
return EN_ATBUS_ERR_ATNODE_INVALID_MSG;
}
if (nullptr == fns[m.msg_body_case()]) {
return EN_ATBUS_ERR_ATNODE_INVALID_MSG;
}
n.stat_add_dispatch_times();
return fns[m.msg_body_case()](n, conn, ATBUS_MACRO_MOVE(m), status, errcode);
}
ATBUS_MACRO_API const char *msg_handler::get_body_name(int body_case) {
static std::string atbus_fn_names[ATBUS_PROTOCOL_MSG_BODY_MAX + 1];
if (atbus_fn_names[0].empty()) {
atbus_fn_names[0] = "Unknown";
const ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Descriptor *msg_desc = atbus::protocol::msg::descriptor();
for (int i = 0; i < msg_desc->field_count(); ++i) {
const ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::FieldDescriptor *fds = msg_desc->field(i);
assert(fds->number() <= ATBUS_PROTOCOL_MSG_BODY_MAX);
assert(fds->number() >= 0);
atbus_fn_names[fds->number()] = fds->full_name();
}
}
const char *ret = nullptr;
if (body_case <= ATBUS_PROTOCOL_MSG_BODY_MAX && body_case >= ATBUS_PROTOCOL_MSG_BODY_MIN) {
ret = atbus_fn_names[body_case].c_str();
}
if (nullptr == ret || !*ret) {
ret = atbus_fn_names[0].c_str();
}
return ret;
}
ATBUS_MACRO_API int msg_handler::send_ping(node &n, connection &conn, uint64_t msg_seq) {
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::ArenaOptions arena_options;
arena_options.initial_block_size = ATBUS_MACRO_RESERVED_SIZE;
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena arena(arena_options);
#if defined(PROTOBUF_VERSION) && PROTOBUF_VERSION >= 5027000
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::Create<atbus::protocol::msg>(&arena);
#else
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::CreateMessage<atbus::protocol::msg>(&arena);
#endif
assert(m);
::atbus::protocol::msg_head *head = m->mutable_head();
::atbus::protocol::ping_data *body = m->mutable_node_ping_req();
assert(head && body);
uint64_t self_id = n.get_id();
head->set_version(n.get_protocol_version());
head->set_ret(0);
head->set_type(0);
head->set_sequence(msg_seq);
head->set_src_bus_id(self_id);
body->set_time_point(n.get_timer_sec() * 1000 + (n.get_timer_usec() / 1000) % 1000);
return send_msg(n, conn, *m);
}
ATBUS_MACRO_API int msg_handler::send_reg(int32_t msg_id, node &n, connection &conn, int32_t ret_code,
uint64_t msg_seq) {
if (msg_id != ::atbus::protocol::msg::kNodeRegisterReq && msg_id != ::atbus::protocol::msg::kNodeRegisterRsp) {
return EN_ATBUS_ERR_PARAMS;
}
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::ArenaOptions arena_options;
arena_options.initial_block_size = ATBUS_MACRO_RESERVED_SIZE;
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena arena(arena_options);
#if defined(PROTOBUF_VERSION) && PROTOBUF_VERSION >= 5027000
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::Create<atbus::protocol::msg>(&arena);
#else
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::CreateMessage<atbus::protocol::msg>(&arena);
#endif
assert(m);
::atbus::protocol::msg_head *head = m->mutable_head();
::atbus::protocol::register_data *body;
if (msg_id == ::atbus::protocol::msg::kNodeRegisterReq) {
body = m->mutable_node_register_req();
} else {
body = m->mutable_node_register_rsp();
}
assert(head && body);
uint64_t self_id = n.get_id();
head->set_version(n.get_protocol_version());
head->set_ret(ret_code);
head->set_type(0);
head->set_sequence(msg_seq);
head->set_src_bus_id(self_id);
body->mutable_channels()->Reserve(static_cast<int>(n.get_listen_list().size()));
for (std::list<std::string>::const_iterator iter = n.get_listen_list().begin(); iter != n.get_listen_list().end();
++iter) {
::atbus::protocol::channel_data *chan = body->add_channels();
if (chan == nullptr) {
continue;
}
chan->set_address(*iter);
}
body->mutable_access_keys()->Reserve(static_cast<int>(n.get_conf().access_tokens.size()));
for (size_t idx = 0; idx < n.get_conf().access_tokens.size(); ++idx) {
uint32_t salt = 0;
uint64_t hashval1 = 0;
uint64_t hashval2 = 0;
if (n.generate_access_hash(idx, salt, hashval1, hashval2)) {
::atbus::protocol::access_data *access = body->add_access_keys();
if (access == nullptr) {
continue;
}
access->set_token_salt(salt);
access->set_token_hash1(hashval1);
access->set_token_hash2(hashval2);
}
}
body->set_bus_id(n.get_id());
body->set_pid(n.get_pid());
body->set_hostname(n.get_hostname());
const endpoint *self_ep = n.get_self_endpoint();
if (nullptr == self_ep) {
ATBUS_FUNC_NODE_ERROR(n, self_ep, nullptr, EN_ATBUS_ERR_NOT_INITED, EN_ATBUS_ERR_NOT_INITED);
return EN_ATBUS_ERR_NOT_INITED;
}
const std::vector<endpoint_subnet_range> &subsets = self_ep->get_subnets();
for (size_t i = 0; i < subsets.size(); ++i) {
atbus::protocol::subnet_range *subset = body->add_subnets();
if (nullptr == subset) {
ATBUS_FUNC_NODE_ERROR(n, self_ep, nullptr, EN_ATBUS_ERR_MALLOC, EN_ATBUS_ERR_MALLOC);
break;
}
subset->set_id_prefix(subsets[i].get_id_prefix());
subset->set_mask_bits(subsets[i].get_mask_bits());
}
body->set_flags(self_ep->get_flags());
body->set_hash_code(n.get_hash_code());
return send_msg(n, conn, *m);
}
ATBUS_MACRO_API int msg_handler::send_transfer_rsp(node &n, ::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int32_t ret_code) {
if (m.msg_body_case() != ::atbus::protocol::msg::kDataTransformReq &&
m.msg_body_case() != ::atbus::protocol::msg::kDataTransformRsp) {
ATBUS_FUNC_NODE_ERROR(n, nullptr, nullptr, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
::atbus::protocol::forward_data *fwd_data;
if (m.msg_body_case() == ::atbus::protocol::msg::kDataTransformReq) {
// move req to rsp
// Same arena here and so we can use unsafe release and set_allocated
fwd_data = m.unsafe_arena_release_data_transform_req();
m.unsafe_arena_set_allocated_data_transform_rsp(fwd_data);
} else {
fwd_data = m.mutable_data_transform_rsp();
}
assert(fwd_data);
uint64_t self_id = n.get_id();
uint64_t origin_from = fwd_data->from();
uint64_t origin_to = fwd_data->to();
// all transfer message must be send by a verified connect, there is no need to check access token again
m.mutable_head()->set_ret(ret_code);
m.mutable_head()->set_src_bus_id(self_id);
fwd_data->set_from(origin_to);
fwd_data->set_to(origin_from);
if (0 == fwd_data->router_size() || *fwd_data->router().rbegin() != self_id) {
fwd_data->add_router(self_id);
}
int ret = n.send_ctrl_msg(origin_from, m);
if (ret < 0) {
ATBUS_FUNC_NODE_ERROR(n, nullptr, nullptr, ret, 0);
}
return ret;
}
ATBUS_MACRO_API int msg_handler::send_custom_cmd_rsp(node &n, connection *conn, const std::list<std::string> &rsp_data,
int32_t type, int32_t ret_code, uint64_t sequence,
uint64_t from_bus_id) {
int ret = 0;
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::ArenaOptions arena_options;
arena_options.initial_block_size = ATBUS_MACRO_RESERVED_SIZE;
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena arena(arena_options);
#if defined(PROTOBUF_VERSION) && PROTOBUF_VERSION >= 5027000
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::Create<atbus::protocol::msg>(&arena);
#else
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::CreateMessage<atbus::protocol::msg>(&arena);
#endif
assert(m);
::atbus::protocol::msg_head *head = m->mutable_head();
::atbus::protocol::custom_command_data *body = m->mutable_custom_command_rsp();
assert(head && body);
uint64_t self_id = n.get_id();
head->set_version(n.get_protocol_version());
head->set_ret(ret_code);
head->set_type(type);
head->set_sequence(sequence);
head->set_src_bus_id(self_id);
body->set_from(n.get_id());
body->mutable_access_keys()->Reserve(static_cast<int>(n.get_conf().access_tokens.size()));
for (size_t idx = 0; idx < n.get_conf().access_tokens.size(); ++idx) {
uint32_t salt = 0;
uint64_t hashval1 = 0;
uint64_t hashval2 = 0;
if (n.generate_access_hash(idx, salt, hashval1, hashval2)) {
::atbus::protocol::access_data *access = body->add_access_keys();
if (access == nullptr) {
continue;
}
access->set_token_salt(salt);
access->set_token_hash1(hashval1);
access->set_token_hash2(hashval2);
}
}
body->mutable_commands()->Reserve(static_cast<int>(rsp_data.size()));
for (std::list<std::string>::const_iterator iter = rsp_data.begin(); iter != rsp_data.end(); ++iter) {
::atbus::protocol::custom_command_argv *cmd_data = body->add_commands();
if (cmd_data == nullptr) {
continue;
}
cmd_data->set_arg(*iter);
}
if (nullptr != conn) {
ret = msg_handler::send_msg(n, *conn, *m);
} else {
ret = n.send_ctrl_msg(from_bus_id, *m);
}
return ret;
}
ATBUS_MACRO_API int msg_handler::send_node_connect_sync(node &n, uint64_t direct_from_bus_id, endpoint &dst_ep) {
const std::list<std::string> &listen_addrs = dst_ep.get_listen();
const endpoint *from_ep = n.get_endpoint(direct_from_bus_id);
bool is_same_host = (nullptr != from_ep && from_ep->get_hostname() == dst_ep.get_hostname());
const std::string *select_address = nullptr;
for (std::list<std::string>::const_iterator iter = listen_addrs.begin(); iter != listen_addrs.end(); ++iter) {
// 通知连接控制通道，控制通道不能是（共享）内存通道
if (0 == UTIL_STRFUNC_STRNCASE_CMP("mem:", iter->c_str(), 4) ||
0 == UTIL_STRFUNC_STRNCASE_CMP("shm:", iter->c_str(), 4)) {
continue;
}
// Unix Sock不能跨机器
if (0 == UTIL_STRFUNC_STRNCASE_CMP("unix:", iter->c_str(), 5) && !is_same_host) {
continue;
}
select_address = &(*iter);
break;
}
if (nullptr != select_address && !select_address->empty()) {
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::ArenaOptions arena_options;
arena_options.initial_block_size = ATBUS_MACRO_RESERVED_SIZE;
::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena arena(arena_options);
#if defined(PROTOBUF_VERSION) && PROTOBUF_VERSION >= 5027000
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::Create<atbus::protocol::msg>(&arena);
#else
atbus::protocol::msg *m = ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::Arena::CreateMessage<atbus::protocol::msg>(&arena);
#endif
assert(m);
::atbus::protocol::msg_head *head = m->mutable_head();
::atbus::protocol::connection_data *body = m->mutable_node_connect_sync();
::atbus::protocol::channel_data *conn_data = body->mutable_address();
assert(head && body && conn_data);
uint64_t self_id = n.get_id();
head->set_version(n.get_protocol_version());
head->set_ret(0);
head->set_type(0);
head->set_sequence(n.alloc_msg_seq());
head->set_src_bus_id(self_id);
conn_data->set_address(*select_address);
int ret = n.send_ctrl_msg(direct_from_bus_id, *m);
if (ret < 0) {
ATBUS_FUNC_NODE_ERROR(n, nullptr, nullptr, ret, 0);
}
return ret;
}
return EN_ATBUS_ERR_SUCCESS;
}
ATBUS_MACRO_API int msg_handler::send_msg(node &n, connection &conn, const ::atbus::protocol::msg &m) {
std::string msg_buffer;
if (!m.SerializeToString(&msg_buffer)) {
ATBUS_FUNC_NODE_ERROR(n, conn.get_binding(), &conn, EN_ATBUS_ERR_PACK, 0);
return EN_ATBUS_ERR_PACK;
}
if (msg_buffer.size() > n.get_conf().msg_size + ATBUS_MACRO_MAX_FRAME_HEADER) {
ATBUS_FUNC_NODE_ERROR(n, conn.get_binding(), &conn, EN_ATBUS_ERR_INVALID_SIZE, 0);
return EN_ATBUS_ERR_INVALID_SIZE;
}
ATBUS_FUNC_NODE_DEBUG(n, conn.get_binding(), &conn, &m,
"node send msg(version=%d, cmd=%s, type=%d, sequence=%u, ret=%d, length=%llu)",
m.head().version(), detail::get_cmd_name(m.msg_body_case()), m.head().type(),
static_cast<unsigned long long>(m.head().sequence()), m.head().ret(),
static_cast<unsigned long long>(msg_buffer.size()));
return conn.push(&msg_buffer[0], msg_buffer.size());
}
ATBUS_MACRO_API int msg_handler::on_recv_data_transfer_req(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int /*errcode*/) {
if (m.msg_body_case() != ::atbus::protocol::msg::kDataTransformReq &&
m.msg_body_case() != ::atbus::protocol::msg::kDataTransformRsp) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
::atbus::protocol::forward_data *fwd_data;
if (m.msg_body_case() == ::atbus::protocol::msg::kDataTransformReq) {
fwd_data = m.mutable_data_transform_req();
} else {
fwd_data = m.mutable_data_transform_rsp();
}
assert(fwd_data);
if (!m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
// check version
if (m.head().version() < n.get_protocol_minimal_version()) {
return send_transfer_rsp(n, ATBUS_MACRO_MOVE(m), EN_ATBUS_ERR_UNSUPPORTED_VERSION);
}
// message from self has no connection
if (nullptr == conn && m.head().src_bus_id() != n.get_id()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
if (nullptr != conn && ::atbus::connection::state_t::CONNECTED != conn->get_status()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_NOT_READY, 0);
return EN_ATBUS_ERR_NOT_READY;
}
// all transfer message must be send by a verified connect, there is no need to check access token again
// dispatch message
const void *fwd_content_ptr = nullptr;
size_t fwd_content_size = 0;
if (!fwd_data->content().empty()) {
fwd_content_ptr = reinterpret_cast<const void *>(fwd_data->content().data());
fwd_content_size = fwd_data->content().size();
}
if (fwd_data->to() == n.get_id()) {
ATBUS_FUNC_NODE_DEBUG(n, (nullptr == conn ? nullptr : conn->get_binding()), conn, &m,
"node recv data length = %lld", static_cast<unsigned long long>(fwd_content_size));
n.on_recv_data(nullptr == conn ? nullptr : conn->get_binding(), conn, m, fwd_content_ptr, fwd_content_size);
if (fwd_data->flags() & atbus::protocol::FORWARD_DATA_FLAG_REQUIRE_RSP) {
return send_transfer_rsp(n, ATBUS_MACRO_MOVE(m), EN_ATBUS_ERR_SUCCESS);
}
return EN_ATBUS_ERR_SUCCESS;
}
size_t router_size = static_cast<size_t>(fwd_data->router().size());
if (router_size >= static_cast<size_t>(n.get_conf().ttl)) {
return send_transfer_rsp(n, ATBUS_MACRO_MOVE(m), EN_ATBUS_ERR_ATNODE_TTL);
}
int res = 0;
endpoint *to_ep = nullptr;
// 转发数据
node::bus_id_t direct_from_bus_id = m.head().src_bus_id();
// add router id
fwd_data->add_router(n.get_id());
res = detail::forward_data_message(n, m, direct_from_bus_id, fwd_data->to(), &to_ep);
// 子节点转发成功
if (res >= 0 && n.is_child_node(fwd_data->to())) {
// 如果来源和目标消息都来自于子节点，则通知建立直连
if (nullptr != to_ep && to_ep->get_flag(endpoint::flag_t::HAS_LISTEN_FD) && n.is_child_node(direct_from_bus_id) &&
n.is_child_node(to_ep->get_id())) {
res = send_node_connect_sync(n, direct_from_bus_id, *to_ep);
}
return res;
}
// 非子节点转发失败，并且不来自于父节点，则转发送给父节点
// 如果失败可能是连接未完成，但是endpoint已建立，所以直接发给父节点
if (res < 0 && false == n.is_parent_node(m.head().src_bus_id()) && false == n.is_child_node(fwd_data->to())) {
// 如果失败的发送目标已经是父节点则不需要重发
const endpoint *parent_ep = n.get_parent_endpoint();
if (nullptr != parent_ep && (nullptr == to_ep || false == n.is_parent_node(to_ep->get_id()))) {
res = detail::forward_data_message(n, m, direct_from_bus_id, parent_ep->get_id(), nullptr);
}
}
// 只有失败或请求方要求回包，才下发通知，类似ICMP协议
if (res < 0 || (fwd_data->flags() & atbus::protocol::FORWARD_DATA_FLAG_REQUIRE_RSP)) {
res = send_transfer_rsp(n, ATBUS_MACRO_MOVE(m), res);
}
if (res < 0) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, res, 0);
}
return res;
}
ATBUS_MACRO_API int msg_handler::on_recv_data_transfer_rsp(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int /*errcode*/) {
if (m.msg_body_case() != ::atbus::protocol::msg::kDataTransformReq &&
m.msg_body_case() != ::atbus::protocol::msg::kDataTransformRsp) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
const ::atbus::protocol::forward_data *fwd_data;
if (m.msg_body_case() == ::atbus::protocol::msg::kDataTransformReq) {
fwd_data = &m.data_transform_req();
} else {
fwd_data = &m.data_transform_rsp();
}
assert(fwd_data);
if (false == m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
// message from self has no connection
if (nullptr == conn && m.head().src_bus_id() != n.get_id()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
if (nullptr != conn && ::atbus::connection::state_t::CONNECTED != conn->get_status()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_NOT_READY, 0);
return EN_ATBUS_ERR_NOT_READY;
}
// all transfer message must be send by a verified connect, there is no need to check access token again
// dispatch message
if (fwd_data->to() == n.get_id()) {
if (m.head().ret() < 0) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, m.head().ret(), 0);
}
n.on_recv_forward_response(nullptr == conn ? nullptr : conn->get_binding(), conn, &m);
return EN_ATBUS_ERR_SUCCESS;
}
// 检查如果发送目标不是来源，则转发失败消息
return detail::forward_data_message(n, m, m.head().src_bus_id(), fwd_data->to(), nullptr);
}
ATBUS_MACRO_API int msg_handler::on_recv_custom_cmd_req(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int /*errcode*/) {
if (m.msg_body_case() != ::atbus::protocol::msg::kCustomCommandReq &&
m.msg_body_case() != ::atbus::protocol::msg::kCustomCommandRsp) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
const ::atbus::protocol::custom_command_data *cmd_data;
if (m.msg_body_case() == ::atbus::protocol::msg::kCustomCommandReq) {
cmd_data = &m.custom_command_req();
} else {
cmd_data = &m.custom_command_rsp();
}
assert(cmd_data);
if (false == m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
// check version
if (m.head().version() < n.get_protocol_minimal_version()) {
std::list<std::string> rsp_data;
rsp_data.push_back("Access Deny - Unsupported Version");
return send_custom_cmd_rsp(n, conn, rsp_data, m.head().type(), EN_ATBUS_ERR_UNSUPPORTED_VERSION,
m.head().sequence(), cmd_data->from());
}
// message from self has no connection
if (nullptr == conn && cmd_data->from() != n.get_id()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
// Check access token
int access_keys_size = cmd_data->access_keys_size();
if (!n.get_conf().access_tokens.empty() || access_keys_size > 0) {
bool check_pass = false;
for (int i = 0; false == check_pass && i < access_keys_size; ++i) {
const ::atbus::protocol::access_data &access_key = cmd_data->access_keys(i);
check_pass = n.check_access_hash(access_key.token_salt(), access_key.token_hash1(), access_key.token_hash2());
}
if (!check_pass) {
std::list<std::string> rsp_data;
rsp_data.push_back("Access Deny - Invalid Token");
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_ACCESS_DENY, 0);
return send_custom_cmd_rsp(n, conn, rsp_data, m.head().type(), EN_ATBUS_ERR_ACCESS_DENY, m.head().sequence(),
cmd_data->from());
}
}
std::vector<std::pair<const void *, size_t> > cmd_args;
cmd_args.reserve(static_cast<size_t>(cmd_data->commands_size()));
for (int i = 0; i < cmd_data->commands_size(); ++i) {
const ::atbus::protocol::custom_command_argv &arg = cmd_data->commands(i);
cmd_args.push_back(
std::make_pair<const void *, size_t>(static_cast<const void *>(arg.arg().data()), arg.arg().size()));
}
std::list<std::string> rsp_data;
int ret =
n.on_custom_cmd(nullptr == conn ? nullptr : conn->get_binding(), conn, cmd_data->from(), cmd_args, rsp_data);
// shm & mem ignore response from other node
if ((nullptr != conn && conn->is_running() && conn->check_flag(connection::flag_t::REG_FD)) ||
n.get_id() == cmd_data->from()) {
ret = send_custom_cmd_rsp(n, conn, rsp_data, m.head().type(), 0, m.head().sequence(), cmd_data->from());
}
return ret;
}
ATBUS_MACRO_API int msg_handler::on_recv_custom_cmd_rsp(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int /*errcode*/) {
if (m.msg_body_case() != ::atbus::protocol::msg::kCustomCommandReq &&
m.msg_body_case() != ::atbus::protocol::msg::kCustomCommandRsp) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
const ::atbus::protocol::custom_command_data *cmd_data;
if (m.msg_body_case() == ::atbus::protocol::msg::kCustomCommandReq) {
cmd_data = &m.custom_command_req();
} else {
cmd_data = &m.custom_command_rsp();
}
assert(cmd_data);
if (false == m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
// message from self has no connection
if (nullptr == conn && cmd_data->from() != n.get_id()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
std::vector<std::pair<const void *, size_t> > cmd_args;
cmd_args.reserve(static_cast<size_t>(cmd_data->commands_size()));
for (int i = 0; i < cmd_data->commands_size(); ++i) {
const ::atbus::protocol::custom_command_argv &arg = cmd_data->commands(i);
cmd_args.push_back(
std::make_pair<const void *, size_t>(static_cast<const void *>(arg.arg().data()), arg.arg().size()));
}
return n.on_custom_rsp(nullptr == conn ? nullptr : conn->get_binding(), conn, cmd_data->from(), cmd_args,
m.head().sequence());
}
ATBUS_MACRO_API int msg_handler::on_recv_node_sync_req(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int /*errcode*/) {
if (nullptr == conn || false == m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
if (::atbus::connection::state_t::CONNECTED != conn->get_status()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_NOT_READY, 0);
return EN_ATBUS_ERR_NOT_READY;
}
// check version
if (m.head().version() < n.get_protocol_minimal_version()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_UNSUPPORTED_VERSION,
0);
return EN_ATBUS_ERR_UNSUPPORTED_VERSION;
}
return EN_ATBUS_ERR_SUCCESS;
}
ATBUS_MACRO_API int msg_handler::on_recv_node_sync_rsp(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int /*errcode*/) {
if (nullptr == conn || false == m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
if (::atbus::connection::state_t::CONNECTED != conn->get_status()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_NOT_READY, 0);
return EN_ATBUS_ERR_NOT_READY;
}
return EN_ATBUS_ERR_SUCCESS;
}
ATBUS_MACRO_API int msg_handler::on_recv_node_reg_req(node &n, connection *conn,
::atbus::protocol::msg ATBUS_MACRO_RVALUE_REFERENCES m,
int /*status*/, int errcode) {
if (m.msg_body_case() != ::atbus::protocol::msg::kNodeRegisterReq &&
m.msg_body_case() != ::atbus::protocol::msg::kNodeRegisterRsp) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
const ::atbus::protocol::register_data *reg_data;
if (m.msg_body_case() == ::atbus::protocol::msg::kNodeRegisterReq) {
reg_data = &m.node_register_req();
} else {
reg_data = &m.node_register_rsp();
}
assert(reg_data);
if (nullptr == conn || false == m.has_head()) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_BAD_DATA, 0);
return EN_ATBUS_ERR_BAD_DATA;
}
// check version
if (m.head().version() < n.get_protocol_minimal_version()) {
if (nullptr != conn) {
int ret = send_reg(::atbus::protocol::msg::kNodeRegisterRsp, n, *conn, EN_ATBUS_ERR_UNSUPPORTED_VERSION,
m.head().sequence());
if (ret < 0) {
ATBUS_FUNC_NODE_ERROR(n, conn->get_binding(), conn, ret, 0);
conn->reset();
}
return ret;
} else {
return EN_ATBUS_ERR_UNSUPPORTED_VERSION;
}
}
// Check access token
int access_keys_size = reg_data->access_keys_size();
if (!n.get_conf().access_tokens.empty() || access_keys_size > 0) {
bool check_pass = false;
for (int i = 0; false == check_pass && i < access_keys_size; ++i) {
const ::atbus::protocol::access_data &access_key = reg_data->access_keys(i);
check_pass = n.check_access_hash(access_key.token_salt(), access_key.token_hash1(), access_key.token_hash2());
}
if (!check_pass) {
ATBUS_FUNC_NODE_ERROR(n, nullptr == conn ? nullptr : conn->get_binding(), conn, EN_ATBUS_ERR_ACCESS_DENY, 0);
if (nullptr != conn) {
int ret =
send_reg(::atbus::protocol::msg::kNodeRegisterRsp, n, *conn, EN_ATBUS_ERR_ACCESS_DENY, m.head().sequence());
if (ret < 0) {
ATBUS_FUNC_NODE_ERROR(n, conn->get_binding(), conn, ret, 0);
conn->reset();
}
return ret;
} else {
return EN_ATBUS_ERR_ACCESS_DENY;
}
}
}
endpoint *ep = nullptr;
int32_t res = EN_ATBUS_ERR_SUCCESS;
int32_t rsp_code = EN_ATBUS_ERR_SUCCESS;
do {
// 如果连接已经设定了端点，不需要再绑定到endpoint
if (conn->is_connected()) {
ep = conn->get_binding();
if (nullptr == ep || ep->get_id() != reg_data->bus_id()) {
ATBUS_FUNC_NODE_ERROR(n, ep, conn, EN_ATBUS_ERR_ATNODE_BUS_ID_NOT_MATCH, 0);
conn->reset();
rsp_code = EN_ATBUS_ERR_ATNODE_BUS_ID_NOT_MATCH;
break;
}
ep->update_hash_code(reg_data->hash_code());
ATBUS_FUNC_NODE_INFO(n, ep, conn, "connection already connected recv req");
break;
}
if (0 == reg_data->bus_id()) {
conn->set_temporary();
ATBUS_FUNC_NODE_INFO(n, ep, conn, "connection set temporary");
break;
}
// 老端点新增连接不需要创建新连接
std::string hostname;
if (!reg_data->hostname().empty()) {
hostname = reg_data->hostname();
}
ep = n.get_endpoint(reg_data->bus_id());
if (nullptr != ep) {
// 检测机器名和进程号必须一致,自己是临时节点则不需要检查
if (0 != n.get_id() && (ep->get_pid() != reg_data->pid() || ep->get_hostname() != hostname)) {
res = EN_ATBUS_ERR_ATNODE_ID_CONFLICT;
ATBUS_FUNC_NODE_ERROR(n, ep, conn, res, 0);
} else if (false == ep->add_connection(conn, conn->check_flag(connection::flag_t::ACCESS_SHARE_HOST))) {
// 有共享物理机限制的连接只能加为数据节点（一般就是内存通道或者共享内存通道）
res = EN_ATBUS_ERR_ATNODE_NO_CONNECTION;
ATBUS_FUNC_NODE_ERROR(n, ep, conn, res, 0);
}
rsp_code = res;
ep->update_hash_code(reg_data->hash_code());
ATBUS_FUNC_NODE_DEBUG(n, ep, conn, &m, "connection added to existed endpoint, res: %d", res);
break;
}
// 创建新端点时需要判定全局路由表权限
std::bitset<endpoint::flag_t::MAX> reg_flags(reg_data->flags());
std::vector<endpoint_subnet_conf> ep_subnets;
ep_subnets.reserve(static_cast<size_t>(reg_data->subnets_size() + 1));
{
bool contains_self = false;
for (int i = 0; i < reg_data->subnets_size(); ++i) {
const atbus::protocol::subnet_range &subnet_net_conf = reg_data->subnets(i);
endpoint_subnet_conf conf_item(subnet_net_conf.id_prefix(), subnet_net_conf.mask_bits());
if (endpoint_subnet_range::contain(conf_item, reg_data->bus_id())) {
contains_self = true;
}
ep_subnets.push_back(conf_item);
}
if (!contains_self) {
ep_subnets.push_back(endpoint_subnet_conf(reg_data->bus_id(), 0));
}
}
if (n.is_child_node(reg_data->bus_id())) {
// 子节点路由子网范围必须小于自身
const endpoint *self_ep = n.get_self_endpoint();
if (nullptr == self_ep) {
rsp_code = EN_ATBUS_ERR_NOT_INITED;
ATBUS_FUNC_NODE_DEBUG(n, ep, conn, &m, "node not initialized");
ATBUS_FUNC_NODE_ERROR(n, self_ep, nullptr, rsp_code, rsp_code);
break;
}
if (!endpoint::contain(self_ep->get_subnets(), ep_subnets)) {
rsp_code = EN_ATBUS_ERR_ATNODE_MASK_CONFLICT;
ATBUS_FUNC_NODE_DEBUG(n, ep, conn, &m, "child mask must be greater than child node");
ATBUS_FUNC_NODE_ERROR(n, self_ep, nullptr, rsp_code, rsp_code);
break;
}
}
endpoint::ptr_t new_ep = endpoint::create(&n, reg_data->bus_id(), ep_subnets, reg_data->pid(), hostname);
if (!new_ep) {
ATBUS_FUNC_NODE_ERROR(n, nullptr, conn, EN_ATBUS_ERR_MALLOC, 0);
rsp_code = EN_ATBUS_ERR_MALLOC;
break;
}
ep = new_ep.get();
ep->update_hash_code(reg_data->hash_code());
// 如果是正在连接父节点，要检查一下父节点覆盖的subnets是不是完全覆盖自己
if (conn->get_address().address == n.get_conf().parent_address) {
const endpoint *self_ep = n.get_self_endpoint();
if (nullptr == self_ep) {
rsp_code = EN_ATBUS_ERR_NOT_INITED;
ATBUS_FUNC_NODE_DEBUG(n, ep, conn, &m, "node not initialized");
} else if (!endpoint::contain(new_ep->get_subnets(), self_ep->get_subnets())) {
rsp_code = EN_ATBUS_ERR_ATNODE_MASK_CONFLICT;
ATBUS_FUNC_NODE_DEBUG(n, ep, conn, &m, "parent subnets do not include all self's subnets");
}
// 如果处于正在初始化要强制失败
if (EN_ATBUS_ERR_SUCCESS != rsp_code) {
if (node::state_t::CONNECTING_PARENT == n.get_state()) {
ATBUS_FUNC_NODE_FATAL_SHUTDOWN(n, ep, conn, rsp_code, rsp_code);
}
conn->reset();
n.add_endpoint_gc_list(new_ep);
break;
}
}
res = n.add_endpoint(new_ep);
if (res < 0) {
ATBUS_FUNC_NODE_ERROR(n, ep, conn, res, 0);
rsp_code = res;
break;
}
ATBUS_FUNC_NODE_DEBUG(n, ep, conn, &m, "node add a new endpoint, res: %d", res);
// 新的endpoint要建立所有连接
ep->add_connection(conn, false);
// 如果双方一边有IOS通道，另一边没有，则没有的连接有的
// 如果双方都有IOS通道，则ID小的连接ID大的
bool can_be_connected_by_ep = false;
bool is_same_host = ep->get_hostname() == n.get_hostname();
bool is_same_pid = ep->get_pid() == n.get_pid();
for (std::list<std::string>::const_iterator iter = n.get_listen_list().begin();
!can_be_connected_by_ep && iter != n.get_listen_list().end(); ++iter) {
if (atbus::channel::is_duplex_address(iter->c_str())) {
if ((is_same_host && is_same_pid) || false == atbus::channel::is_local_process_address(iter->c_str())) {
can_be_connected_by_ep = true;
} else if (is_same_host || false == atbus::channel::is_local_host_address(iter->c_str())) {
can_be_connected_by_ep = true;
}
}
}
// io_stream channel only need one connection
bool has_data_conn = false;
const ::ATBUS_MACRO_PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::atbus::protocol::channel_data> &all_channels =
reg_data->channels();
for (int i = 0; i < all_channels.size(); ++i) {
const ::atbus::protocol::channel_data &chan = all_channels.Get(i);
if (chan.address().empty()) {
continue;
}
if (can_be_connected_by_ep && n.get_id() > ep->get_id()) {
// wait peer to connect n, do not check and close endpoint
has_data_conn = true;
if (atbus::channel::is_duplex_address(chan.address().c_str())) {
continue;
}
}
bool local_host_address = atbus::channel::is_local_host_address(chan.address().c_str());
bool local_process_address = atbus::channel::is_local_process_address(chan.address().c_str());
// check hostname
if (local_host_address && !is_same_host) {
continue;
}
// check pid
if (local_process_address && !is_same_pid) {
continue;
}
// if n is not a temporary node, connect to other nodes
if (0 != n.get_id() && 0 != ep->get_id()) {
res = n.connect(chan.address().c_str(), ep);
} else {
res = 0;
// temporary node also should not check and close endpoint
has_data_conn = true;
}
if (res < 0) {
ATBUS_FUNC_NODE_ERROR(n, ep, conn, res, 0);
} else {
ep->add_listen(chan.address().c_str());
has_data_conn = true;
}
}
// 如果没有成功进行的数据连接，加入检测列表，下一帧释放
if (!has_data_conn) {