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[FEAT MERGE] implement mysql dblink and read consistency

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Co-authored-by: xianyu-w <707512433@qq.com>
Co-authored-by: sdc <njucssdc@gmail.com>
Co-authored-by: seuwebber <webber_code@163.com>
This commit is contained in:
cqliang1995
2023-05-09 18:32:03 +00:00
committed by ob-robot
parent 38b78ad442
commit 4108e781d4
132 changed files with 2726 additions and 818 deletions
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24
src/sql/engine/dml/ob_link_op.cpp
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@ -6,6 +6,7 @@
#include "share/schema/ob_dblink_mgr.h"
#include "lib/mysqlclient/ob_mysql_connection.h"
#include "lib/mysqlclient/ob_mysql_connection_pool.h"
#include "common/sql_mode/ob_sql_mode_utils.h"
#include "sql/ob_sql_utils.h"
namespace oceanbase
{
@ -136,7 +137,7 @@ int ObLinkOp::init_dblink(uint64_t dblink_id, ObDbLinkProxy *dblink_proxy, bool
dblink_schema_->get_tenant_name(),
dblink_schema_->get_user_name(),
dblink_schema_->get_plain_password(),
ObString(""),
dblink_schema_->get_database_name(),
dblink_schema_->get_conn_string(),
dblink_schema_->get_cluster_name(),
param_ctx))) {
@ -145,17 +146,21 @@ int ObLinkOp::init_dblink(uint64_t dblink_id, ObDbLinkProxy *dblink_proxy, bool
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);
const char *set_sql_mode_sql = NULL;
if (!is_oracle_mode() && OB_FAIL(ObDblinkService::get_set_sql_mode_cstr(my_session, set_sql_mode_sql, allocator_))) {
LOG_WARN("failed to get set_sql_mode_sql", K(ret));
} else if (OB_FAIL(dblink_proxy->acquire_dblink(dblink_id,
link_type_,
param_ctx,
dblink_conn_,
sessid_,
next_sql_req_level_,
set_sql_mode_sql))) {
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_))) {
} else if (in_xa_trascaction_ && lib::is_oracle_mode() &&
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()));
@ -241,6 +246,7 @@ int ObLinkOp::combine_link_stmt(const ObString &link_stmt_fmt,
obj_print_params.cs_type_ = ctx_.get_my_session()->get_nls_collation();
}
obj_print_params.need_cast_expr_ = true;
obj_print_params.print_const_expr_type_ = 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,