hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity
Files
d2110be61c9ddf81937d128c8727000104fef5d1
oceanbase/src/sql/engine/dml/ob_link_op.cpp

422 lines
17 KiB
C++
Raw Blame History

#define USING_LOG_PREFIX SQL_ENG
#include "sql/engine/dml/ob_link_dml_op.h"
#include "sql/engine/ob_exec_context.h"
#include "observer/ob_server_struct.h"
#include "share/schema/ob_dblink_mgr.h"
#include "lib/mysqlclient/ob_mysql_connection.h"
#include "lib/mysqlclient/ob_mysql_connection_pool.h"
#include "sql/ob_sql_utils.h"
namespace oceanbase
{
using namespace common;
using namespace common::sqlclient;
using namespace share;
using namespace share::schema;
namespace sql
{
ObLinkSpec::ObLinkSpec(common::ObIAllocator &alloc, const ObPhyOperatorType type)
: ObOpSpec(alloc, type),
allocator_(alloc),
param_infos_(alloc),
stmt_fmt_(),
stmt_fmt_buf_(NULL),
stmt_fmt_len_(0),
dblink_id_(OB_INVALID_ID),
is_reverse_link_(false)
{}
OB_DEF_SERIALIZE(ObLinkSpec)
{
int ret = OB_SUCCESS;
BASE_SER((ObLinkSpec, ObOpSpec));
LST_DO_CODE(OB_UNIS_ENCODE,
param_infos_,
stmt_fmt_,
dblink_id_,
is_reverse_link_);
return ret;
}
OB_DEF_DESERIALIZE(ObLinkSpec)
{
int ret = OB_SUCCESS;
BASE_DESER((ObLinkSpec, ObOpSpec));
LST_DO_CODE(OB_UNIS_DECODE,
param_infos_,
stmt_fmt_,
dblink_id_,
is_reverse_link_);
if (OB_FAIL(ret)) {
} else if (FALSE_IT(stmt_fmt_len_ = stmt_fmt_.length())) {
// nothing.
} else if (OB_ISNULL(stmt_fmt_buf_ = static_cast<char *>(allocator_.alloc(stmt_fmt_len_)))) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("failed to alloc stmt_fmt_buf", K(ret), K(stmt_fmt_len_));
} else {
MEMCPY(stmt_fmt_buf_, stmt_fmt_.ptr(), stmt_fmt_len_);
stmt_fmt_.assign(stmt_fmt_buf_, static_cast<int32_t>(stmt_fmt_len_));
}
return ret;
}
OB_DEF_SERIALIZE_SIZE(ObLinkSpec)
{
int64_t len = 0;
BASE_ADD_LEN((ObLinkSpec, ObOpSpec));
LST_DO_CODE(OB_UNIS_ADD_LEN,
param_infos_,
stmt_fmt_,
dblink_id_,
is_reverse_link_);
return len;
}
const int64_t ObLinkOp::STMT_BUF_BLOCK = 1024L;
const char * ObLinkOp::head_comment_fmt_ = "/*$BEFPARSEdblink_req_level=%d*/";
// %d will be counted as 2 byte length, but after print number(6/7/8) to %d, it only need 1 byte to print number.
// Last 1 byte reserved for snprintf to print \0.
const int64_t ObLinkOp::head_comment_length_ = STRLEN(head_comment_fmt_);
// for proxy to route dblink reverse sql req
const char *ObLinkOp::proxy_route_info_fmt_ = "/*ODP: target_db_server=%s*/";
const int64_t ObLinkOp::proxy_route_info_fmt_length_ = STRLEN(proxy_route_info_fmt_);
const int64_t ObLinkOp::proxy_route_ip_port_size_ = 64; // 64 byte is enough for ipv4:port or ipv6:port string
ObLinkOp::ObLinkOp(ObExecContext &exec_ctx, const ObOpSpec &spec, ObOpInput *input)
: ObOperator(exec_ctx, spec, input),
tenant_id_(OB_INVALID_ID),
dblink_id_(OB_INVALID_ID),
sessid_(0),
dblink_schema_(NULL),
dblink_proxy_(NULL),
dblink_conn_(NULL),
allocator_(exec_ctx.get_allocator()),
stmt_buf_(NULL),
stmt_buf_len_(STMT_BUF_BLOCK),
next_sql_req_level_(0),
link_type_(DBLINK_DRV_OB),
in_xa_trascaction_(false)
{}
int ObLinkOp::init_dblink(uint64_t dblink_id, ObDbLinkProxy *dblink_proxy, bool in_xa_trascaction)
{
int ret = OB_SUCCESS;
ObSchemaGetterGuard schema_guard;
dblink_param_ctx param_ctx;
ObSQLSessionInfo * my_session = NULL;
common::sqlclient::ObISQLConnection *dblink_conn = NULL;
my_session = ctx_.get_my_session();
ObPhysicalPlanCtx *plan_ctx = GET_PHY_PLAN_CTX(ctx_);
in_xa_trascaction_ = in_xa_trascaction;
if (OB_NOT_NULL(dblink_proxy_)) {
ret = OB_INIT_TWICE;
LOG_WARN("link scan ctx already inited", K(ret));
} else if (OB_ISNULL(dblink_proxy)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("dblink_proxy is NULL", K(ret));
} else if (OB_ISNULL(my_session) || OB_ISNULL(plan_ctx)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("my_session or plan_ctx is NULL", K(my_session), K(plan_ctx), K(ret));
} else if (FALSE_IT(sessid_ = my_session->get_sessid())) {
} else if (OB_FAIL(GCTX.schema_service_->get_tenant_schema_guard(tenant_id_, schema_guard))) {
LOG_WARN("failed to get schema guard", K(ret), K(tenant_id_));
} else if (OB_FAIL(schema_guard.get_dblink_schema(tenant_id_, dblink_id, dblink_schema_))) {
LOG_WARN("failed to get dblink schema", K(ret), K(tenant_id_), K(dblink_id));
} else if (OB_ISNULL(dblink_schema_)) {
ret = OB_DBLINK_NOT_EXIST_TO_ACCESS;
LOG_WARN("dblink schema is NULL", K(ret), K(dblink_id));
} else if (FALSE_IT(set_link_driver_proto(static_cast<DblinkDriverProto>(dblink_schema_->get_driver_proto())))) {
// do nothing
} else if (OB_FAIL(ObLinkOp::init_dblink_param_ctx(ctx_, param_ctx))) {
LOG_WARN("failed to init dblink param ctx", K(ret));
} else if (OB_FAIL(dblink_proxy->create_dblink_pool(tenant_id_,
dblink_id,
link_type_,
dblink_schema_->get_host_addr(),
dblink_schema_->get_tenant_name(),
dblink_schema_->get_user_name(),
dblink_schema_->get_plain_password(),
ObString(""),
dblink_schema_->get_conn_string(),
dblink_schema_->get_cluster_name(),
param_ctx))) {
LOG_WARN("failed to create dblink pool", K(ret));
} else if (OB_FAIL(my_session->get_dblink_context().get_dblink_conn(dblink_id, dblink_conn))) {
LOG_WARN("failed to get dblink connection from session", K(my_session), K(sessid_), K(ret));
} else {
if (NULL == dblink_conn) {
if (OB_FAIL(dblink_proxy->acquire_dblink(dblink_id,
link_type_,
param_ctx,
dblink_conn_,
sessid_,
next_sql_req_level_))) {
ObDblinkUtils::process_dblink_errno(link_type_, dblink_conn_, ret);
LOG_WARN("failed to acquire dblink", K(ret), K(dblink_id));
} else if (OB_FAIL(my_session->get_dblink_context().register_dblink_conn_pool(dblink_conn_->get_common_server_pool()))) {
LOG_WARN("failed to register dblink conn pool to current session", K(ret));
} else if (in_xa_trascaction_ && OB_FAIL(my_session->get_dblink_context().set_dblink_conn(dblink_conn_))) {
LOG_WARN("failed to set dblink connection to session", K(my_session), K(sessid_), K(ret));
} else {
LOG_INFO("link op get connection from dblink pool", KP(dblink_conn_), K(lbt()));
}
} else {
dblink_conn_ = dblink_conn;
in_xa_trascaction_ = true; //to tell link scan op don't release dblink_conn_
LOG_TRACE("link op get connection from xa trasaction", K(dblink_id), KP(dblink_conn_));
}
if (OB_SUCC(ret)) {
dblink_id_ = dblink_id;
dblink_proxy_ = dblink_proxy;
}
}
return ret;
}
int ObLinkOp::execute_link_stmt(const ObString &link_stmt_fmt,
const ObIArray<ObParamPosIdx> &param_infos,
const ObParamStore &param_store,
ObReverseLink *reverse_link)
{
int ret = OB_SUCCESS;
if (OB_FAIL(combine_link_stmt(link_stmt_fmt,
param_infos,
param_store,
reverse_link))) {
LOG_WARN("failed to gen link stmt", K(ret), K(link_stmt_fmt));
} else if (OB_FAIL(inner_execute_link_stmt(stmt_buf_))) {
LOG_WARN("failed to execute link stmt", K(ret));
}
return ret;
}
int ObLinkOp::combine_link_stmt(const ObString &link_stmt_fmt,
const ObIArray<ObParamPosIdx> &param_infos,
const ObParamStore &param_store,
ObReverseLink *reverse_link)
{
// combine link_stmt_fmt and parameter strings to final link stmt.
int ret = OB_SUCCESS;
// reserve head_comment_length_ byte length for head comment
int64_t link_stmt_pos = head_comment_length_;
int64_t reserve_proxy_route_space = 0;
int64_t next_param = 0;
int64_t stmt_fmt_pos = 0;
int64_t stmt_fmt_next_param_pos = (next_param < param_infos.count() ?
param_infos.at(next_param).pos_ : link_stmt_fmt.length());
char proxy_route_ip_port_str[proxy_route_ip_port_size_] = { 0 };
if (OB_NOT_NULL(reverse_link)) {
if (OB_FAIL(reverse_link->get_self_addr().ip_port_to_string(proxy_route_ip_port_str,
proxy_route_ip_port_size_))) {
LOG_WARN("failed to print self addr");
} else {
// %s proxy_route_info_fmt_ in will be count as 2 byte, but only need 1 byte reserved for snprintf to print \0
// STRLEN(proxy_route_ip_port_str) will be reserver for snprintf to print proxy_route_ip_port_str
reserve_proxy_route_space += proxy_route_info_fmt_length_ + STRLEN(proxy_route_ip_port_str) - 1;
}
}
link_stmt_pos += reserve_proxy_route_space;
while (OB_SUCC(ret) && stmt_fmt_pos < link_stmt_fmt.length()) {
// copy from link_stmt_fmt.
if (stmt_fmt_pos < stmt_fmt_next_param_pos) {
int64_t copy_len = stmt_fmt_next_param_pos - stmt_fmt_pos;
if (link_stmt_pos + copy_len > stmt_buf_len_ &&
OB_FAIL(extend_stmt_buf(link_stmt_pos + copy_len))) {
LOG_WARN("failed to extend stmt buf", K(ret));
}
if (OB_SUCC(ret)) {
MEMCPY(stmt_buf_ + link_stmt_pos, link_stmt_fmt.ptr() + stmt_fmt_pos, copy_len);
link_stmt_pos += copy_len;
stmt_fmt_pos = stmt_fmt_next_param_pos;
}
} else if (stmt_fmt_pos == stmt_fmt_next_param_pos) {
// copy from param_store.
int64_t saved_stmt_pos = link_stmt_pos;
int64_t param_idx = param_infos.at(next_param).idx_;
const ObObjParam &param = param_store.at(param_idx);
ObObjPrintParams obj_print_params = CREATE_OBJ_PRINT_PARAM(ctx_.get_my_session());
if (DBLINK_DRV_OCI == link_type_) {
// Ensure that when oceanbase connects to oracle,
// the target character set of param is the same as that of oci connection.
obj_print_params.cs_type_ = ctx_.get_my_session()->get_nls_collation();
}
obj_print_params.need_cast_expr_ = true;
while (OB_SUCC(ret) && link_stmt_pos == saved_stmt_pos) {
//Previously, the format parameter of the print sql literal function was NULL.
//In the procedure scenario, when dblink reverse spell trunc(date type), it will treat the date type as a string,
//so correct formatting parameter obj_print_params need to be given.
if (OB_FAIL(param.print_sql_literal(stmt_buf_, stmt_buf_len_, link_stmt_pos, obj_print_params))) {
if (ret == OB_SIZE_OVERFLOW) {
ret = OB_SUCCESS;
if (OB_FAIL(extend_stmt_buf())) {
LOG_WARN("failed to extend stmt buf", K(ret), K(param));
} else {
// databuff_printf() will set link_stmt_pos to stmt_buf_len_ - 1,
// so we need load the saved_stmt_pos and retry.
link_stmt_pos = saved_stmt_pos;
}
} else {
LOG_WARN("failed to print param", K(ret), K(param));
}
} else {
next_param++;
stmt_fmt_pos += ObLinkStmtParam::get_param_len();
stmt_fmt_next_param_pos = (next_param < param_infos.count() ?
param_infos.at(next_param).pos_ : link_stmt_fmt.length());
}
} // while
} else {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("fmt_pos should not be greater than fmt_next_param_pos", K(ret),
K(stmt_fmt_pos), K(stmt_fmt_next_param_pos));
}
}
if (OB_FAIL(ret)) {
// do nothing
} else if (link_stmt_pos >= stmt_buf_len_ && OB_FAIL(extend_stmt_buf(link_stmt_pos + 1))) {
LOG_WARN("failed to extend stmt buf", K(ret), K(link_stmt_pos), K(stmt_buf_len_));
} else {
stmt_buf_[link_stmt_pos++] = 0;
LOG_DEBUG("succ to combine link sql", K(stmt_buf_), K(link_stmt_pos));
if (DBLINK_DRV_OB == link_type_) {
snprintf(stmt_buf_, head_comment_length_, head_comment_fmt_, next_sql_req_level_);
// after snprint only head_comment_length_ - 1 byte was printed by head comment
// pos of head_comment_length_ - 1 is '\0', need filled as ' '
stmt_buf_[head_comment_length_ - 1] = ' ';
if (OB_NOT_NULL(reverse_link)) {
snprintf(stmt_buf_ + head_comment_length_,
reserve_proxy_route_space,
proxy_route_info_fmt_,
proxy_route_ip_port_str);
stmt_buf_[head_comment_length_ + reserve_proxy_route_space - 1] = ' ';
LOG_DEBUG("succ to combine link sql", K(stmt_buf_), K(link_stmt_pos), K(proxy_route_ip_port_str));
}
} else {
stmt_buf_ += head_comment_length_ + reserve_proxy_route_space;
link_stmt_pos -= head_comment_length_ + reserve_proxy_route_space;
}
LOG_TRACE("succ to combine link sql", K(stmt_buf_), K(link_stmt_pos));
}
return ret;
}
int ObLinkOp::extend_stmt_buf(int64_t need_size)
{
int ret = OB_SUCCESS;
int64_t alloc_size = (need_size > stmt_buf_len_) ?
(need_size / STMT_BUF_BLOCK + 1) * STMT_BUF_BLOCK :
stmt_buf_len_ + STMT_BUF_BLOCK;
char *alloc_buf = static_cast<char *>(allocator_.alloc(alloc_size));
if (OB_ISNULL(alloc_buf)) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("failed to extend stmt buf", K(ret), K(alloc_size));
} else {
MEMCPY(alloc_buf, stmt_buf_, stmt_buf_len_);
allocator_.free(stmt_buf_);
stmt_buf_ = alloc_buf;
stmt_buf_len_ = alloc_size;
}
return ret;
}
int ObLinkSpec::set_stmt_fmt(const char *stmt_fmt_buf, int64_t stmt_fmt_len)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_fmt_buf) || stmt_fmt_len <= 0) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("stmt_fmt_buf is null or stmt_fmt_len is less than 0",
K(ret), KP(stmt_fmt_buf), K(stmt_fmt_len));
} else if (OB_ISNULL(stmt_fmt_buf_ = static_cast<char *>(allocator_.alloc(stmt_fmt_len)))) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("failed to alloc stmt_fmt_buf", K(ret), K(stmt_fmt_len));
} else {
MEMCPY(stmt_fmt_buf_, stmt_fmt_buf, stmt_fmt_len);
stmt_fmt_len_ = stmt_fmt_len;
stmt_fmt_.assign(stmt_fmt_buf_, static_cast<int32_t>(stmt_fmt_len_));
}
return ret;
}
int ObLinkSpec::set_param_infos(const ObIArray<ObParamPosIdx> &param_infos)
{
int ret = OB_SUCCESS;
param_infos_.reset();
if (param_infos.count() > 0 && OB_FAIL(param_infos_.init(param_infos.count()))) {
LOG_WARN("failed to init fixed array", K(param_infos.count()));
}
for (int64_t i = 0; OB_SUCC(ret) && i < param_infos.count(); i++) {
if (OB_FAIL(param_infos_.push_back(param_infos.at(i)))) {
LOG_WARN("failed to push back param info", K(ret), K(param_infos.at(i)));
}
}
return ret;
}
int ObLinkOp::init_dblink_param_ctx(ObExecContext &exec_ctx, dblink_param_ctx &param_ctx)
{
int ret = OB_SUCCESS;
uint16_t charset_id = 0;
uint16_t ncharset_id = 0;
if (OB_FAIL(get_charset_id(exec_ctx, charset_id, ncharset_id))) {
LOG_WARN("failed to get session charset id", K(ret));
} else {
param_ctx.charset_id_ = charset_id;
param_ctx.ncharset_id_ = ncharset_id;
param_ctx.pool_type_ = DblinkPoolType::DBLINK_POOL_DEF;
}
return ret;
}
int ObLinkOp::get_charset_id(ObExecContext &exec_ctx,
uint16_t &charset_id, uint16_t &ncharset_id)
{
int ret = OB_SUCCESS;
ObSQLSessionInfo *sess_info = NULL;
if (OB_ISNULL(sess_info = exec_ctx.get_my_session())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null session info", K(ret));
} else {
ObCollationType coll_type = sess_info->get_nls_collation();
ObCollationType ncoll_type = sess_info->get_nls_collation_nation();
ObCharsetType cs_type = ObCharset::charset_type_by_coll(coll_type);
ObCharsetType ncs_type = ObCharset::charset_type_by_coll(ncoll_type);
if (CHARSET_INVALID == cs_type || CHARSET_INVALID == ncs_type) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("failed to get charset id", K(ret), K(coll_type));
} else {
charset_id = static_cast<uint16_t>(ObCharset::charset_type_to_ora_charset_id(cs_type));
ncharset_id = static_cast<uint16_t>(ObCharset::charset_type_to_ora_charset_id(ncs_type));
LOG_DEBUG("get charset id", K(ret), K(charset_id), K(ncharset_id),
K(cs_type), K(ncs_type), K(coll_type), K(ncoll_type));
}
}
return ret;
}
void ObLinkOp::reset_link_sql()
{
if (OB_NOT_NULL(stmt_buf_)) {
stmt_buf_[0] = 0;
}
stmt_buf_len_ = 0;
}
int ObLinkOp::set_next_sql_req_level()
{
int ret = OB_SUCCESS;
ObSQLSessionInfo * my_session = NULL;
my_session = ctx_.get_my_session();
if (OB_ISNULL(my_session)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("my_session is NULL", K(my_session), K(ret));
} else if (FALSE_IT(next_sql_req_level_ = my_session->get_next_sql_request_level())) {
} else if (next_sql_req_level_ < 1 || next_sql_req_level_ > 3) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid next_sql_req_level", K(next_sql_req_level_), K(ret));
}
return ret;
}
} // end namespace sql
} // end namespace oceanbase
Reference in New Issue View Git Blame Copy Permalink