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src/sql/optimizer/ob_log_monitoring_dump.cpp

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+/**
+ * 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_OPT
+#include "sql/optimizer/ob_log_monitoring_dump.h"
+#include "sql/optimizer/ob_optimizer_util.h"
+#include "ob_opt_est_cost.h"
+#include "ob_select_log_plan.h"
+
+using namespace oceanbase;
+using namespace sql;
+using namespace oceanbase::common;
+
+namespace oceanbase {
+namespace sql {
+
+const char* ObLogMonitoringDump::get_name() const
+{
+  static const char* monitoring_name_[1] = {
+      "MONITORING DUMP",
+  };
+  return monitoring_name_[0];
+}
+
+int ObLogMonitoringDump::copy_without_child(ObLogicalOperator*& out)
+{
+  int ret = OB_SUCCESS;
+  ObLogicalOperator* op = NULL;
+  ObLogMonitoringDump* monitoring_dump = NULL;
+  if (OB_FAIL(clone(op))) {
+    SQL_OPT_LOG(WARN, "Failed to clone ObLogMonitoringDump", K(ret));
+  } else if (OB_ISNULL(monitoring_dump = static_cast<ObLogMonitoringDump*>(op))) {
+    ret = OB_ERR_UNEXPECTED;
+    SQL_OPT_LOG(WARN, "Failed to cast ObLogicalOperator * to ObLogMonitoringDump *", K(ret));
+  } else {
+    monitoring_dump->flags_ = flags_;
+    out = monitoring_dump;
+  }
+  return ret;
+}
+
+int ObLogMonitoringDump::allocate_exchange_post(AllocExchContext* ctx)
+{
+  int ret = OB_NOT_SUPPORTED;
+  UNUSED(ctx);
+  return ret;
+}
+
+int ObLogMonitoringDump::print_my_plan_annotation(char* buf, int64_t& buf_len, int64_t& pos, ExplainType type)
+{
+  int ret = OB_SUCCESS;
+  // print access
+  UNUSED(buf);
+  UNUSED(buf_len);
+  UNUSED(pos);
+  UNUSED(type);
+  return ret;
+}
+
+int ObLogMonitoringDump::transmit_op_ordering()
+{
+  int ret = OB_NOT_SUPPORTED;
+  LOG_WARN("Monitoring dump never got there", K(ret));
+  return ret;
+}
+
+int ObLogMonitoringDump::re_est_cost(const ObLogicalOperator* parent, double need_row_count, bool& re_est)
+{
+  int ret = OB_NOT_SUPPORTED;
+  UNUSED(parent);
+  UNUSED(need_row_count);
+  UNUSED(re_est);
+  LOG_WARN("Monitoring dump never got there", K(ret));
+  return ret;
+}
+
+int ObLogMonitoringDump::compute_op_ordering()
+{
+  int ret = OB_SUCCESS;
+  ObLogicalOperator* child = NULL;
+  if (OB_ISNULL(child = get_child(first_child))) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("Child is null", K(ret));
+  } else if (OB_FAIL(set_op_ordering(child->get_op_ordering()))) {
+    LOG_WARN("Failed to set op ordering", K(ret));
+  }
+  return ret;
+}
+
+int ObLogMonitoringDump::print_outline(planText& plan_text)
+{
+  int ret = OB_SUCCESS;
+  if (is_added_outline_) {  // do nothing.
+  } else if (OB_FAIL(print_tracing(plan_text))) {
+    LOG_WARN("fail to print tracing", K(ret));
+  }
+  return ret;
+}
+
+int ObLogMonitoringDump::print_tracing(planText& plan_text)
+{
+  int ret = OB_SUCCESS;
+  bool is_oneline = plan_text.is_oneline_;
+  char* buf = plan_text.buf;
+  int64_t& buf_len = plan_text.buf_len;
+  int64_t& pos = plan_text.pos;
+  if (flags_ & OB_MONITOR_TRACING) {
+    if (OB_FAIL(BUF_PRINTF("\n"))) {
+    } else if (OB_FAIL(BUF_PRINTF(ObStmtHint::get_outline_indent(is_oneline)))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF(ObStmtHint::TRACING_HINT))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF("("))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF("%lu", dst_op_line_id_))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF(")"))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else {
+    }
+  }
+  if (OB_SUCC(ret) && (flags_ & OB_MONITOR_STAT)) {
+    if (OB_FAIL(BUF_PRINTF("\n"))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF(ObStmtHint::get_outline_indent(is_oneline)))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF(ObStmtHint::STAT_HINT))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF("("))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF("%lu", dst_op_line_id_))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else if (OB_FAIL(BUF_PRINTF(")"))) {
+      LOG_WARN("failed to do BUF PRINF", K(ret));
+    } else {
+    }
+  }
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase