未验证 提交 2ef4c421 编写于 作者: S slguan 提交者: GitHub

Merge pull request #1556 from taosdata/feature/sync

Feature/sync
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TDENGINE_SYNC_H
#define TDENGINE_SYNC_H
#ifdef __cplusplus
extern "C" {
#endif
#define TAOS_SYNC_MAX_REPLICA 5
typedef enum _TAOS_SYNC_ROLE {
TAOS_SYNC_ROLE_OFFLINE,
TAOS_SYNC_ROLE_UNSYNCED,
TAOS_SYNC_ROLE_SLAVE,
TAOS_SYNC_ROLE_MASTER,
} ESyncRole;
typedef enum _TAOS_SYNC_STATUS {
TAOS_SYNC_STATUS_INIT,
TAOS_SYNC_STATUS_START,
TAOS_SYNC_STATUS_FILE,
TAOS_SYNC_STATUS_CACHE,
} ESyncStatus;
typedef struct {
uint32_t nodeId; // node ID assigned by TDengine
uint32_t nodeIp; // node IP address
char name[TSDB_FILENAME_LEN]; // external node name
} SNodeInfo;
typedef struct {
uint32_t arbitratorIp; // arbitrator IP address
int8_t quorum; // number of confirms required, >=1
int8_t replica; // number of replications, >=1
SNodeInfo nodeInfo[TAOS_SYNC_MAX_REPLICA];
} SSyncCfg;
typedef struct {
int selfIndex;
uint32_t nodeId[TAOS_SYNC_MAX_REPLICA];
int role[TAOS_SYNC_MAX_REPLICA];
} SNodesRole;
typedef struct {
char label[20]; // for debug purpose
char path[128]; // path to the file
int8_t replica; // number of replications, >=1
int8_t quorum; // number of confirms required, >=1
int32_t vgId; // vgroup ID
void *ahandle; // handle provided by APP
uint64_t version; // initial version
uint32_t arbitratorIp;
SNodeInfo nodeInfo[TAOS_SYNC_MAX_REPLICA];
// if name is null, get the file from index or after, used by master
// if name is provided, get the named file at the specified index, used by unsynced node
// it returns the file magic number and size, if file not there, magic shall be 0.
uint32_t (*getFileInfo)(char *name, int *index, int *size);
// get the wal file from index or after
// return value, -1: error, 1:more wal files, 0:last WAL. if name[0]==0, no WAL file
int (*getWalInfo)(char *name, int *index);
// when a forward pkt is received, call this to handle data
int (*writeToCache)(void *ahandle, SWalHead *, int type);
// when forward is confirmed by peer, master call this API to notify app
void (*confirmForward)(void *ahandle, void *mhandle, int32_t code);
// when role is changed, call this to notify app
void (*notifyRole)(void *ahandle, int8_t role);
} SSyncInfo;
typedef void* tsync_h;
tsync_h syncStart(SSyncInfo *);
void syncStop(tsync_h shandle);
int syncReconfig(tsync_h shandle, SSyncInfo *);
int syncForwardToPeer(tsync_h shandle, SWalHead *pHead, void *mhandle);
void syncConfirmForward(tsync_h shandle, uint64_t version, int32_t code);
void syncRecover(tsync_h shandle); // recover from other nodes:
int syncGetNodesRole(tsync_h shandle, SNodesRole *);
extern char *syncRole[];
extern int tsMaxSyncNum;
extern int tsSyncTcpThreads;
extern int tsMaxWatchFiles;
extern short tsSyncPort;
extern int tsMaxFwdInfo;
#ifdef __cplusplus
}
#endif
#endif // TDENGINE_SYNC_H
......@@ -33,6 +33,11 @@ typedef struct {
char cont[];
} SWalHead;
typedef struct {
int8_t commitLog; // commitLog
int8_t wals; // number of WAL files;
} SWalCfg;
typedef void* twal_h; // WAL HANDLE
twal_h walOpen(char *path, int max, int level);
......
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