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2021-05-31 22:56:52 +08:00
commit cea7de1475
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--- a/src/sql/executor/ob_task_executor.cpp
+++ b/src/sql/executor/ob_task_executor.cpp
@ -0,0 +1,97 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#define USING_LOG_PREFIX SQL_EXE
+
+#include "sql/executor/ob_job.h"
+#include "sql/executor/ob_task_info.h"
+#include "sql/executor/ob_task_executor.h"
+#include "sql/executor/ob_task_spliter.h"
+#include "sql/executor/ob_receive.h"
+#include "sql/engine/ob_phy_operator.h"
+#include "sql/engine/ob_exec_context.h"
+#include "sql/engine/table/ob_table_scan.h"
+#include "lib/utility/ob_tracepoint.h"
+
+using namespace oceanbase::common;
+using namespace oceanbase::sql;
+
+ObTaskExecutor::ObTaskExecutor()
+{}
+
+ObTaskExecutor::~ObTaskExecutor()
+{}
+
+int ObTaskExecutor::execute(ObExecContext& query_ctx, ObJob* job, ObTaskInfo* task_info)
+{
+  UNUSED(query_ctx);
+  UNUSED(job);
+  UNUSED(task_info);
+  return OB_NOT_IMPLEMENT;
+}
+
+// Recursively construct the Input of each Opeator belonging to this task
+// Note: There can be multiple tasks of the same structure under a job,
+//    but their parameters are different (task_info)
+// For each task, you need to call build_task_op_input
+int ObTaskExecutor::build_task_op_input(ObExecContext& query_ctx, ObTaskInfo& task_info, const ObPhyOperator& root_op)
+{
+  int ret = OB_SUCCESS;
+  const ObPhyOperator* child_op = NULL;
+  ObIPhyOperatorInput* op_input = GET_PHY_OP_INPUT(ObIPhyOperatorInput, query_ctx, root_op.get_id());
+  // Some ops have no input and continue to recurse when NULL == op_input
+  if (NULL != op_input) {
+    op_input->reset();
+    OZ(op_input->init(query_ctx, task_info, root_op));
+  }
+  if (OB_SUCC(ret)) {
+    if (!IS_RECEIVE(root_op.get_type())) {
+      for (int32_t i = 0; OB_SUCC(ret) && i < root_op.get_child_num(); ++i) {
+        if (OB_ISNULL(child_op = root_op.get_child(i))) {
+          ret = OB_ERR_UNEXPECTED;
+        } else if (OB_FAIL(OB_I(t2) build_task_op_input(query_ctx, task_info, *child_op))) {
+          LOG_WARN("fail to build child op input", K(ret), K(i), K(child_op->get_id()));
+        }
+      }
+    } else {
+      // Encounter ObReceive, stop recursion
+    }
+  }
+  return ret;
+}
+
+int ObTaskExecutor::should_skip_failed_tasks(ObTaskInfo& task_info, bool& skip_failed_tasks) const
+{
+  int ret = OB_SUCCESS;
+  // when the task only involves virtual tables, the failed tasks are skipped
+  skip_failed_tasks = false;
+  ObPhyOperator* root_op = NULL;
+  ObSEArray<const ObTableScan*, 1> scan_ops;
+  if (OB_ISNULL(root_op = task_info.get_root_op())) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_ERROR("root op is NULL", K(ret), K(task_info));
+  } else if (OB_FAIL(ObTaskSpliter::find_scan_ops(scan_ops, *root_op))) {
+    LOG_WARN("fail to find scan ops", K(ret), K(*root_op), K(task_info));
+  } else if (scan_ops.count() > 0) {
+    skip_failed_tasks = true;
+    for (int64_t i = 0; OB_SUCC(ret) && true == skip_failed_tasks && i < scan_ops.count(); ++i) {
+      const ObTableScan* scan_op = scan_ops.at(i);
+      if (OB_ISNULL(scan_op)) {
+        ret = OB_ERR_UNEXPECTED;
+        LOG_ERROR("scan op is NULL", K(ret), K(i), K(*root_op), K(task_info));
+      } else if (!is_virtual_table(scan_op->get_ref_table_id())) {
+        skip_failed_tasks = false;
+      }
+    }
+  }
+  return ret;
+}