/**
 * 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

#include "ob_sql_task.h"
#include "ob_sql.h"

using namespace oceanbase::observer;
using namespace oceanbase::common;
using namespace oceanbase::obrpc;

void ObSqlTaskHandler::reset()
{
 task_ = NULL;
 sql_engine_ = NULL;
}

int ObSqlTaskHandler::init(observer::ObSrvTask *task, ObSql *sql_engine)
{
 int ret = OB_SUCCESS;
 if (NULL == task || NULL == sql_engine) {
 ret = OB_INVALID_ARGUMENT;;
 SQL_LOG(WARN, "invalid argument", K(ret), KP(task), KP(sql_engine));
 } else {
 //表示该task是Observer内部生成的task
 task_ = task;
 sql_engine_ = sql_engine;
 }
 return ret;
}

int ObSqlTaskHandler::run()
{
 int ret = OB_SUCCESS;
 if (NULL == task_) {
 ret = OB_ERR_UNEXPECTED;
 SQL_LOG(WARN, "task is null, unexpected error", K(ret), KP_(task));
 } else if (NULL == sql_engine_) {
 ret = OB_ERR_UNEXPECTED;
 SQL_LOG(WARN, "sql engine is null, unexpected error", K(ret), KP_(sql_engine));
 } else {
// ObSqlTask *task = static_cast<ObSqlTask *>(task_);
// ObCurTraceId::set(task->get_trace_id());
// if (OB_FAIL(sql_engine_->handle_batch_req(task->get_msg_type(),
// task->get_req_ts(),
// task->get_buf(),
// task->get_size()))) {
// SQL_LOG(WARN, "handle sql task failed", K(ret), K(*task));
// }
 }
 return ret;
}

void ObSqlTask::reset()
{
 msg_type_ = 0;
 size_ = 0;
 handler_.reset();
}

int ObSqlTask::init(const int msg_type, const ObReqTimestamp &req_ts, const char *buf, const int64_t size, ObSql *sql_engine)
{
 int ret = OB_SUCCESS;
 if (OB_ISNULL(buf) ||
 OB_UNLIKELY(0 >= size) ||
 OB_UNLIKELY(MAX_SQL_TASK_SIZE < size) ||
 OB_ISNULL(sql_engine)) {
 ret = OB_INVALID_ARGUMENT;
 SQL_LOG(WARN, "invalid argument", K(ret), KP(buf), K(size), KP(sql_engine), K(msg_type));
 } else if (OB_FAIL(handler_.init(this, sql_engine))) {
 SQL_LOG(WARN, "ObSqlTaskHandler init failed", K(ret));
 } else {
 //与sql断连接的task区别开来,用于内存释放
 set_type(ObRequest::OB_SQL_TASK);
 msg_type_ = msg_type;
 memcpy(buf_, buf, size);
 size_ = size;
 req_ts_ = req_ts;
 ObCurTraceId::TraceId *trace_id = ObCurTraceId::get_trace_id();
 if (OB_LIKELY(NULL != trace_id)) {
 trace_id_.set(*trace_id);
 }
 }
 return ret;
}

int ObSqlTaskFactory::init()
{
 // do nothing
 return OB_SUCCESS;
}

void ObSqlTaskFactory::destroy()
{
}

ObSqlTask *ObSqlTaskFactory::alloc(const uint64_t tenant_id)
{
 return alloc_(tenant_id);
}

void ObSqlTaskFactory::free(ObSqlTask *task)
{
 free_(task);
}

ObSqlTaskFactory &ObSqlTaskFactory::get_instance()
{
 static ObSqlTaskFactory instance;
 return instance;
}

ObSqlTask *ObSqlTaskFactory::alloc_(const uint64_t tenant_id)
{
 ObMemAttr memattr(tenant_id, "OB_SQL_TASK");
 void *ptr = NULL;
 ObSqlTask *task = NULL;
 if (NULL != (ptr = ob_malloc(sizeof(ObSqlTask), memattr))) {
 task = new(ptr) ObSqlTask();
 }
 return task;
}

void ObSqlTaskFactory::free_(ObSqlTask *task)
{
 if (NULL != task) {
 task->~ObSqlTask();
 ob_free(task);
 task = NULL;
 }
}