74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TDENGINE_STREAMSM_H
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#define TDENGINE_STREAMSM_H
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#include "tstream.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// moore finite state machine for stream task
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typedef struct SStreamTaskState {
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ETaskStatus state;
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char* name;
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} SStreamTaskState;
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typedef enum EStreamTaskEvent {
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TASK_EVENT_INIT = 0x1,
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TASK_EVENT_START = 0x2,
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TASK_EVENT_STOP = 0x3,
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TASK_EVENT_GEN_CHECKPOINT = 0x4,
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TASK_EVENT_PAUSE = 0x5,
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TASK_EVENT_RESUME = 0x6,
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TASK_EVENT_HALT = 0x7,
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TASK_EVENT_TRANS_STATE = 0x8,
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TASK_EVENT_SCAN_TSDB = 0x9,
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TASK_EVENT_SCAN_WAL = 0x10,
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} EStreamTaskEvent;
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typedef int32_t (*__state_trans_fn)(SStreamTask*);
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typedef struct STaskStateTrans {
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SStreamTaskState state;
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EStreamTaskEvent event;
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SStreamTaskState next;
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__state_trans_fn pAction;
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} STaskStateTrans;
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struct SStreamTaskSM {
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SStreamTaskState current;
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SArray* pTransList; // SArray<STaskStateTrans>
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int64_t stateTs;
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SStreamTask* pTask;
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STaskStateTrans* pActiveTrans;
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};
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typedef struct SStreamEventInfo {
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EStreamTaskEvent event;
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const char* name;
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bool isTrans;
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} SStreamEventInfo;
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SStreamTaskSM* streamCreateStateMachine(SStreamTask* pTask);
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#ifdef __cplusplus
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}
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#endif
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#endif // TDENGINE_STREAMSM_H
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