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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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54
src/sql/ob_sql_context.cpp
View File

@ -19,6 +19,7 @@
#include "sql/optimizer/ob_log_plan.h"
#include "share/schema/ob_schema_getter_guard.h"
#include "sql/dblink/ob_dblink_utils.h"
#include "src/storage/tx/ob_trans_define_v4.h"
using namespace ::oceanbase::common;
namespace oceanbase
@ -323,6 +324,7 @@ void ObSqlSchemaGuard::reset()
schema_guard_ = NULL;
allocator_.reset();
next_link_table_id_ = 1;
dblink_scn_.reuse();
}
TableItem *ObSqlSchemaGuard::get_table_item_by_ref_id(const ObDMLStmt *stmt, uint64_t ref_table_id)
@ -411,13 +413,41 @@ int ObSqlSchemaGuard::get_table_schema(uint64_t dblink_id,
if (OB_SUCC(ret) && OB_ISNULL(table_schema)) {
ObTableSchema *tmp_schema = NULL;
OV (OB_NOT_NULL(schema_guard_), OB_NOT_INIT);
uint64_t current_scn = OB_INVALID_ID;
uint64_t *scn = NULL;
if (OB_SUCC(ret)) {
if (OB_ISNULL(session_info)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("session info is null", K(ret));
} else {
bool use_scn = (session_info->is_in_transaction() &&
transaction::ObTxIsolationLevel::RC == session_info->get_tx_desc()->get_isolation_level())
|| !session_info->is_in_transaction();
if (use_scn && OB_FAIL(get_link_current_scn(dblink_id, tenant_id, session_info, current_scn))) {
if (OB_HASH_NOT_EXIST == ret) {
scn = &current_scn;
ret = OB_SUCCESS;
} else {
LOG_WARN("get link current scn failed", K(ret));
}
}
}
}
OZ (schema_guard_->get_link_table_schema(tenant_id,
dblink_id,
database_name, table_name,
allocator_, tmp_schema,
session_info,
dblink_name,
is_reverse_link));
is_reverse_link,
scn));
if (OB_SUCC(ret) && (NULL != scn)) {
if (OB_FAIL(dblink_scn_.set_refactored(dblink_id, *scn))) {
LOG_WARN("set refactored failed", K(ret));
} else {
LOG_TRACE("set dblink current scn", K(dblink_id), K(*scn));
}
}
OV (OB_NOT_NULL(tmp_schema));
OX (tmp_schema->set_table_id(next_link_table_id_++));
OX (tmp_schema->set_link_table_id(tmp_schema->get_table_id()));
@ -587,6 +617,28 @@ int ObSqlSchemaGuard::get_link_column_schema(uint64_t table_id, uint64_t column_
return ret;
}
int ObSqlSchemaGuard::get_link_current_scn(uint64_t dblink_id, uint64_t tenant_id,
ObSQLSessionInfo *session_info,
uint64_t &current_scn)
{
int ret = OB_SUCCESS;
current_scn = OB_INVALID_ID;
if (!dblink_scn_.created()) {
if (OB_FAIL(dblink_scn_.create(4, "DblinkScnMap", "DblinkScnMap", tenant_id))) {
LOG_WARN("create hash map failed", K(ret));
} else {
ret = OB_HASH_NOT_EXIST;
}
} else {
if (OB_FAIL(dblink_scn_.get_refactored(dblink_id, current_scn))) {
if (OB_HASH_NOT_EXIST != ret) {
LOG_WARN("get dblink scn failed", K(ret));
}
}
}
return ret;
}
int ObSqlCtx::set_partition_infos(const ObTablePartitionInfoArray &info, ObIAllocator &allocator)
{
int ret = OB_SUCCESS;