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homework-jianmu/tools/shell/src/shellAuto.c

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/*
* 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/>.
*/
#define __USE_XOPEN
#include "shellInt.h"
#include "shellAuto.h"
#include "shellTire.h"
#include "tthread.h"
//
// ------------- define area ---------------
//
#define UNION_ALL " union all "
// extern function
void shellClearScreen(int32_t ecmd_pos, int32_t cursor_pos);
void shellGetPrevCharSize(const char* str, int32_t pos, int32_t* size, int32_t* width);
void shellShowOnScreen(SShellCmd* cmd);
void shellInsertChar(SShellCmd* cmd, char* c, int size);
bool appendAfterSelect(TAOS* con, SShellCmd* cmd, char* p, int32_t len);
typedef struct SAutoPtr {
STire* p;
int ref;
} SAutoPtr;
typedef struct SWord {
int type; // word type , see WT_ define
char* word;
int32_t len;
struct SWord* next;
bool free; // if true need free
} SWord;
typedef struct {
char* source;
int32_t source_len; // valid data length in source
int32_t count;
SWord* head;
// matched information
int32_t matchIndex; // matched word index in words
int32_t matchLen; // matched length at matched word
} SWords;
SWords shellCommands[] = {
{"alter database <db_name> <alter_db_options> <anyword> <alter_db_options> <anyword> <alter_db_options> <anyword> "
"<alter_db_options> <anyword> <alter_db_options> <anyword> ;",
0, 0, NULL},
{"alter dnode <dnode_id> balance ", 0, 0, NULL},
{"alter dnode <dnode_id> resetlog;", 0, 0, NULL},
{"alter dnode <dnode_id> debugFlag 141;", 0, 0, NULL},
{"alter dnode <dnode_id> monitor 1;", 0, 0, NULL},
{"alter all dnodes monitor ", 0, 0, NULL},
{"alter alldnodes balance ", 0, 0, NULL},
{"alter alldnodes resetlog;", 0, 0, NULL},
{"alter alldnodes debugFlag 141;", 0, 0, NULL},
{"alter alldnodes monitor 1;", 0, 0, NULL},
{"alter table <tb_name> <tb_actions> <anyword> ;", 0, 0, NULL},
{"alter table modify column", 0, 0, NULL},
{"alter local resetlog;", 0, 0, NULL},
{"alter local DebugFlag 143;", 0, 0, NULL},
{"alter local cDebugFlag 143;", 0, 0, NULL},
{"alter local uDebugFlag 143;", 0, 0, NULL},
{"alter local rpcDebugFlag 143;", 0, 0, NULL},
{"alter local tmrDebugFlag 143;", 0, 0, NULL},
{"alter topic", 0, 0, NULL},
{"alter user <user_name> <user_actions> <anyword> ;", 0, 0, NULL},
// 20
{"create table <anyword> using <stb_name> tags(", 0, 0, NULL},
{"create database <anyword> <db_options> <anyword> <db_options> <anyword> <db_options> <anyword> <db_options> "
"<anyword> <db_options> <anyword> <db_options> <anyword> <db_options> <anyword> <db_options> <anyword> "
"<db_options> <anyword> <db_options> <anyword> ;",
0, 0, NULL},
{"create dnode ", 0, 0, NULL},
{"create index ", 0, 0, NULL},
{"create mnode on dnode <dnode_id> ;", 0, 0, NULL},
{"create qnode on dnode <dnode_id> ;", 0, 0, NULL},
{"create stream <anyword> into <anyword> as select", 0, 0, NULL}, // 26 append sub sql
{"create topic <anyword> as select", 0, 0, NULL}, // 27 append sub sql
{"create function ", 0, 0, NULL},
{"create user <anyword> pass <anyword> sysinfo 0;", 0, 0, NULL},
{"create user <anyword> pass <anyword> sysinfo 1;", 0, 0, NULL},
{"describe <all_table>", 0, 0, NULL},
{"delete from <all_table> where ", 0, 0, NULL},
{"drop database <db_name>", 0, 0, NULL},
{"drop table <all_table>", 0, 0, NULL},
{"drop dnode <dnode_id>", 0, 0, NULL},
{"drop mnode on dnode <dnode_id> ;", 0, 0, NULL},
{"drop qnode on dnode <dnode_id> ;", 0, 0, NULL},
{"drop user <user_name> ;", 0, 0, NULL},
// 40
{"drop function", 0, 0, NULL},
{"drop consumer group <anyword> on ", 0, 0, NULL},
{"drop topic <topic_name> ;", 0, 0, NULL},
{"drop stream <stream_name> ;", 0, 0, NULL},
{"explain select", 0, 0, NULL}, // 44 append sub sql
{"grant all on <anyword> to <user_name> ;", 0, 0, NULL},
{"grant read on <anyword> to <user_name> ;", 0, 0, NULL},
{"grant write on <anyword> to <user_name> ;", 0, 0, NULL},
{"kill connection <anyword> ;", 0, 0, NULL},
{"kill query ", 0, 0, NULL},
{"kill transaction ", 0, 0, NULL},
{"merge vgroup ", 0, 0, NULL},
{"reset query cache;", 0, 0, NULL},
{"revoke all on <anyword> from <user_name> ;", 0, 0, NULL},
{"revoke read on <anyword> from <user_name> ;", 0, 0, NULL},
{"revoke write on <anyword> from <user_name> ;", 0, 0, NULL},
{"select * from <all_table>", 0, 0, NULL},
{"select _block_dist() from <all_table> \\G;", 0, 0, NULL},
{"select client_version();", 0, 0, NULL},
// 60
{"select current_user();", 0, 0, NULL},
{"select database();", 0, 0, NULL},
{"select server_version();", 0, 0, NULL},
{"select server_status();", 0, 0, NULL},
{"select now();", 0, 0, NULL},
{"select today();", 0, 0, NULL},
{"select timezone();", 0, 0, NULL},
{"set max_binary_display_width ", 0, 0, NULL},
{"show apps;", 0, 0, NULL},
{"show create database <db_name> \\G;", 0, 0, NULL},
{"show create stable <stb_name> \\G;", 0, 0, NULL},
{"show create table <tb_name> \\G;", 0, 0, NULL},
{"show connections;", 0, 0, NULL},
{"show cluster;", 0, 0, NULL},
{"show databases;", 0, 0, NULL},
{"show dnodes;", 0, 0, NULL},
{"show dnode <dnode_id> variables;", 0, 0, NULL},
{"show functions;", 0, 0, NULL},
{"show mnodes;", 0, 0, NULL},
{"show queries;", 0, 0, NULL},
// 80
{"show query <anyword> ;", 0, 0, NULL},
{"show qnodes;", 0, 0, NULL},
{"show stables;", 0, 0, NULL},
{"show stables like ", 0, 0, NULL},
{"show streams;", 0, 0, NULL},
{"show scores;", 0, 0, NULL},
{"show snodes;", 0, 0, NULL},
{"show subscriptions;", 0, 0, NULL},
{"show tables;", 0, 0, NULL},
{"show tables like", 0, 0, NULL},
{"show table distributed <all_table>", 0, 0, NULL},
{"show tags from <tb_name>", 0, 0, NULL},
{"show tags from <db_name>", 0, 0, NULL},
{"show topics;", 0, 0, NULL},
{"show transactions;", 0, 0, NULL},
{"show users;", 0, 0, NULL},
{"show variables;", 0, 0, NULL},
{"show local variables;", 0, 0, NULL},
{"show vnodes <dnode_id>", 0, 0, NULL},
{"show vgroups;", 0, 0, NULL},
{"show consumers;", 0, 0, NULL},
{"show grants;", 0, 0, NULL},
{"split vgroup ", 0, 0, NULL},
{"insert into <tb_name> values(", 0, 0, NULL},
{"insert into <tb_name> using <stb_name> tags(", 0, 0, NULL},
{"insert into <tb_name> using <stb_name> <anyword> values(", 0, 0, NULL},
{"insert into <tb_name> file ", 0, 0, NULL},
{"trim database <db_name>", 0, 0, NULL},
{"use <db_name>", 0, 0, NULL},
{"quit", 0, 0, NULL}};
char* keywords[] = {
"and ", "asc ", "desc ", "from ", "fill(", "limit ", "where ",
"interval(", "order by ", "order by ", "offset ", "or ", "group by ", "now()",
"session(", "sliding ", "slimit ", "soffset ", "state_window(", "today() ", "union all select ",
"partition by "};
char* functions[] = {
"count(", "sum(",
"avg(", "last(",
"last_row(", "top(",
"interp(", "max(",
"min(", "now()",
"today()", "percentile(",
"tail(", "pow(",
"abs(", "atan(",
"acos(", "asin(",
"apercentile(", "bottom(",
"cast(", "ceil(",
"char_length(", "cos(",
"concat(", "concat_ws(",
"csum(", "diff(",
"derivative(", "elapsed(",
"first(", "floor(",
"hyperloglog(", "histogram(",
"irate(", "leastsquares(",
"length(", "log(",
"lower(", "ltrim(",
"mavg(", "mode(",
"tan(", "round(",
"rtrim(", "sample(",
"sin(", "spread(",
"substr(", "statecount(",
"stateduration(", "stddev(",
"sqrt(", "timediff(",
"timezone(", "timetruncate(",
"twa(", "to_unixtimestamp(",
"unique(", "upper(",
};
char* tb_actions[] = {
"add column ", "modify column ", "drop column ", "rename column ", "add tag ",
"modify tag ", "drop tag ", "rename tag ", "set tag ",
};
char* user_actions[] = {"pass ", "enable ", "sysinfo "};
char* tb_options[] = {"comment ", "watermark ", "max_delay ", "ttl ", "rollup(", "sma("};
char* db_options[] = {"keep ",
"replica ",
"precision ",
"strict ",
"buffer ",
"cachemodel ",
"cachesize ",
"comp ",
"duration ",
"wal_fsync_period",
"maxrows ",
"minrows ",
"pages ",
"pagesize ",
"retentions ",
"wal_level ",
"vgroups ",
"single_stable ",
"wal_retention_period ",
"wal_roll_period ",
"wal_retention_size ",
"wal_segment_size "};
char* alter_db_options[] = {"keep ", "cachemodel ", "cachesize ", "wal_fsync_period ", "wal_level "};
char* data_types[] = {"timestamp", "int",
"int unsigned", "varchar(16)",
"float", "double",
"binary(16)", "nchar(16)",
"bigint", "bigint unsigned",
"smallint", "smallint unsigned",
"tinyint", "tinyint unsigned",
"bool", "json"};
char* key_tags[] = {"tags("};
char* key_select[] = {"select "};
//
// ------- gobal variant define ---------
//
int32_t firstMatchIndex = -1; // first match shellCommands index
int32_t lastMatchIndex = -1; // last match shellCommands index
int32_t curMatchIndex = -1; // current match shellCommands index
int32_t lastWordBytes = -1; // printShow last word length
bool waitAutoFill = false;
//
// ----------- global var array define -----------
//
#define WT_VAR_DBNAME 0
#define WT_VAR_STABLE 1
#define WT_VAR_TABLE 2
#define WT_VAR_DNODEID 3
#define WT_VAR_USERNAME 4
#define WT_VAR_TOPIC 5
#define WT_VAR_STREAM 6
#define WT_VAR_ALLTABLE 7
#define WT_VAR_FUNC 8
#define WT_VAR_KEYWORD 9
#define WT_VAR_TBACTION 10
#define WT_VAR_DBOPTION 11
#define WT_VAR_ALTER_DBOPTION 12
#define WT_VAR_DATATYPE 13
#define WT_VAR_KEYTAGS 14
#define WT_VAR_ANYWORD 15
#define WT_VAR_TBOPTION 16
#define WT_VAR_USERACTION 17
#define WT_VAR_KEYSELECT 18
#define WT_VAR_CNT 19
#define WT_FROM_DB_MAX 6 // max get content from db
#define WT_FROM_DB_CNT (WT_FROM_DB_MAX + 1)
#define WT_TEXT 0xFF
char dbName[256] = ""; // save use database name;
// tire array
STire* tires[WT_VAR_CNT];
TdThreadMutex tiresMutex;
// save thread handle obtain var name from db server
TdThread* threads[WT_FROM_DB_CNT];
// obtain var name with sql from server
char varTypes[WT_VAR_CNT][64] = {"<db_name>", "<stb_name>", "<tb_name>", "<dnode_id>", "<user_name>",
"<topic_name>", "<stream_name>", "<all_table>", "<function>", "<keyword>",
"<tb_actions>", "<db_options>", "<alter_db_options>", "<data_types>", "<key_tags>",
"<anyword>", "<tb_options>", "<user_actions>", "<key_select>"};
char varSqls[WT_FROM_DB_CNT][64] = {"show databases;", "show stables;", "show tables;", "show dnodes;",
"show users;", "show topics;", "show streams;"};
// var words current cursor, if user press any one key except tab, cursorVar can be reset to -1
int cursorVar = -1;
bool varMode = false; // enter var names list mode
TAOS* varCon = NULL;
SShellCmd* varCmd = NULL;
SMatch* lastMatch = NULL; // save last match result
int cntDel = 0; // delete byte count after next press tab
// show auto tab introduction
void printfIntroduction() {
printf(" **************************** How To Use TAB Key ********************************\n");
printf(" * TDengine Command Line supports pressing TAB key to complete word, *\n");
printf(" * including database name, table name, function name and keywords. *\n");
printf(" * Press TAB key anywhere, you'll get surprise. *\n");
printf(" * KEYBOARD SHORTCUT: *\n");
printf(" * [ TAB ] ...... Complete the word or show help if no input *\n");
printf(" * [ Ctrl + A ] ...... move cursor to [A]head of line *\n");
printf(" * [ Ctrl + E ] ...... move cursor to [E]nd of line *\n");
printf(" * [ Ctrl + W ] ...... move cursor to line of middle *\n");
printf(" * [ Ctrl + L ] ...... clean screen *\n");
printf(" * [ Ctrl + K ] ...... clean after cursor *\n");
printf(" * [ Ctrl + U ] ...... clean before cursor *\n");
printf(" * *\n");
printf(" **********************************************************************************\n\n");
}
void showHelp() {
printf("\nThe following are supported commands for TDengine Command Line:");
printf(
"\n\
----- A ----- \n\
alter database <db_name> <db_options> \n\
alter dnode <dnode_id> balance \n\
alter dnode <dnode_id> resetlog;\n\
alter all dnodes monitor \n\
alter alldnodes balance \n\
alter alldnodes resetlog;\n\
alter alldnodes debugFlag \n\
alter alldnodes monitor \n\
alter table <tb_name> <tb_actions> ;\n\
alter table modify column\n\
alter local resetlog;\n\
alter local DebugFlag 143;\n\
alter topic\n\
alter user <user_name> <user_actions> ...\n\
----- C ----- \n\
create table <tb_name> using <stb_name> tags ...\n\
create database <db_name> <db_options> ...\n\
create dnode ...\n\
create index ...\n\
create mnode on dnode <dnode_id> ;\n\
create qnode on dnode <dnode_id> ;\n\
create stream <stream_name> into <stb_name> as select ...\n\
create topic <topic_name> as select ...\n\
create function ...\n\
create user <user_name> pass <password> ...\n\
----- D ----- \n\
describe <all_table>\n\
delete from <all_table> where ...\n\
drop database <db_name>;\n\
drop table <all_table>;\n\
drop dnode <dnode_id>;\n\
drop mnode on dnode <dnode_id> ;\n\
drop qnode on dnode <dnode_id> ;\n\
drop user <user_name> ;\n\
drop function <function_name>;\n\
drop consumer group ... \n\
drop topic <topic_name> ;\n\
drop stream <stream_name> ;\n\
----- E ----- \n\
explain select clause ...\n\
----- I ----- \n\
insert into <tb_name> values(...) ;\n\
insert into <tb_name> using <stb_name> tags(...) values(...) ;\n\
----- G ----- \n\
grant all on <priv_level> to <user_name> ;\n\
grant read on <priv_level> to <user_name> ;\n\
grant write on <priv_level> to <user_name> ;\n\
----- K ----- \n\
kill connection <connection_id>; \n\
kill query <query_id>; \n\
kill transaction <transaction_id>;\n\
----- M ----- \n\
merge vgroup ...\n\
----- R ----- \n\
reset query cache;\n\
revoke all on <priv_level> from <user_name> ;\n\
revoke read on <priv_level> from <user_name> ;\n\
revoke write on <priv_level> from <user_name> ;\n\
----- S ----- \n\
select * from <all_table> where ... \n\
select _block_dist() from <all_table>;\n\
select client_version();\n\
select current_user();\n\
select database();\n\
select server_version();\n\
select server_status();\n\
select now();\n\
select today();\n\
select timezone();\n\
set max_binary_display_width ...\n\
show apps;\n\
show create database <db_name>;\n\
show create stable <stb_name>;\n\
show create table <tb_name>;\n\
show connections;\n\
show cluster;\n\
show databases;\n\
show dnodes;\n\
show dnode <dnode_id> variables;\n\
show functions;\n\
show mnodes;\n\
show queries;\n\
show query <query_id> ;\n\
show qnodes;\n\
show snodes;\n\
show stables;\n\
show stables like \n\
show streams;\n\
show scores;\n\
show subscriptions;\n\
show tables;\n\
show tables like\n\
show table distributed <all_table>;\n\
show tags from <tb_name>\n\
show tags from <db_name>\n\
show topics;\n\
show transactions;\n\
show users;\n\
show variables;\n\
show local variables;\n\
show vnodes <dnode_id>\n\
show vgroups;\n\
show consumers;\n\
show grants;\n\
split vgroup ...\n\
----- T ----- \n\
trim database <db_name>;\n\
----- U ----- \n\
use <db_name>;");
printf("\n\n");
// define in getDuration() function
printf(
"\
Timestamp expression Format:\n\
b - nanosecond \n\
u - microsecond \n\
a - millisecond \n\
s - second \n\
m - minute \n\
h - hour \n\
d - day \n\
w - week \n\
now - current time \n\
Example : \n\
select * from t1 where ts > now - 2w + 3d and ts <= now - 1w -2h ;\n");
printf("\n");
}
//
// ------------------- parse words --------------------------
//
#define SHELL_COMMAND_COUNT() (sizeof(shellCommands) / sizeof(SWords))
// get at
SWord* atWord(SWords* command, int32_t index) {
SWord* word = command->head;
for (int32_t i = 0; i < index; i++) {
if (word == NULL) return NULL;
word = word->next;
}
return word;
}
#define MATCH_WORD(x) atWord(x, x->matchIndex)
int wordType(const char* p, int32_t len) {
for (int i = 0; i < WT_VAR_CNT; i++) {
if (strncmp(p, varTypes[i], len) == 0) return i;
}
return WT_TEXT;
}
// add word
SWord* addWord(const char* p, int32_t len, bool pattern) {
SWord* word = (SWord*)taosMemoryMalloc(sizeof(SWord));
memset(word, 0, sizeof(SWord));
word->word = (char*)p;
word->len = len;
// check format
if (pattern) {
word->type = wordType(p, len);
} else {
word->type = WT_TEXT;
}
return word;
}
// parse one command
void parseCommand(SWords* command, bool pattern) {
char* p = command->source;
int32_t start = 0;
int32_t size = command->source_len > 0 ? command->source_len : strlen(p);
bool lastBlank = false;
for (int i = 0; i <= size; i++) {
if (p[i] == ' ' || i == size) {
// check continue blank like ' '
if (p[i] == ' ') {
if (lastBlank) {
start++;
continue;
}
if (i == 0) { // first blank
lastBlank = true;
start++;
continue;
}
lastBlank = true;
}
// found split or string end , append word
if (command->head == NULL) {
command->head = addWord(p + start, i - start, pattern);
command->count = 1;
} else {
SWord* word = command->head;
while (word->next) {
word = word->next;
}
word->next = addWord(p + start, i - start, pattern);
command->count++;
}
start = i + 1;
} else {
lastBlank = false;
}
}
}
// free SShellCmd
void freeCommand(SWords* command) {
SWord* word = command->head;
if (word == NULL) {
return;
}
// loop
while (word->next) {
SWord* tmp = word;
word = word->next;
// if malloc need free
if (tmp->free && tmp->word) taosMemoryFree(tmp->word);
taosMemoryFree(tmp);
}
// if malloc need free
if (word->free && word->word) taosMemoryFree(word->word);
taosMemoryFree(word);
}
void GenerateVarType(int type, char** p, int count) {
STire* tire = createTire(TIRE_LIST);
for (int i = 0; i < count; i++) {
insertWord(tire, p[i]);
}
taosThreadMutexLock(&tiresMutex);
tires[type] = tire;
taosThreadMutexUnlock(&tiresMutex);
}
//
// -------------------- shell auto ----------------
//
// init shell auto funciton , shell start call once
bool shellAutoInit() {
// command
int32_t count = SHELL_COMMAND_COUNT();
for (int32_t i = 0; i < count; i++) {
parseCommand(shellCommands + i, true);
}
// tires
memset(tires, 0, sizeof(STire*) * WT_VAR_CNT);
taosThreadMutexInit(&tiresMutex, NULL);
// threads
memset(threads, 0, sizeof(TdThread*) * WT_FROM_DB_CNT);
// generate varType
GenerateVarType(WT_VAR_FUNC, functions, sizeof(functions) / sizeof(char*));
GenerateVarType(WT_VAR_KEYWORD, keywords, sizeof(keywords) / sizeof(char*));
GenerateVarType(WT_VAR_DBOPTION, db_options, sizeof(db_options) / sizeof(char*));
GenerateVarType(WT_VAR_ALTER_DBOPTION, alter_db_options, sizeof(alter_db_options) / sizeof(char*));
GenerateVarType(WT_VAR_TBACTION, tb_actions, sizeof(tb_actions) / sizeof(char*));
GenerateVarType(WT_VAR_DATATYPE, data_types, sizeof(data_types) / sizeof(char*));
GenerateVarType(WT_VAR_KEYTAGS, key_tags, sizeof(key_tags) / sizeof(char*));
GenerateVarType(WT_VAR_TBOPTION, tb_options, sizeof(tb_options) / sizeof(char*));
GenerateVarType(WT_VAR_USERACTION, user_actions, sizeof(user_actions) / sizeof(char*));
GenerateVarType(WT_VAR_KEYSELECT, key_select, sizeof(key_select) / sizeof(char*));
return true;
}
// set conn
void shellSetConn(TAOS* conn) { varCon = conn; }
// exit shell auto funciton, shell exit call once
void shellAutoExit() {
// free command
int32_t count = SHELL_COMMAND_COUNT();
for (int32_t i = 0; i < count; i++) {
freeCommand(shellCommands + i);
}
// free tires
taosThreadMutexLock(&tiresMutex);
for (int32_t i = 0; i < WT_VAR_CNT; i++) {
if (tires[i]) {
freeTire(tires[i]);
tires[i] = NULL;
}
}
taosThreadMutexUnlock(&tiresMutex);
// destory
taosThreadMutexDestroy(&tiresMutex);
// free threads
for (int32_t i = 0; i < WT_FROM_DB_CNT; i++) {
if (threads[i]) {
taosDestroyThread(threads[i]);
threads[i] = NULL;
}
}
// free lastMatch
if (lastMatch) {
freeMatch(lastMatch);
lastMatch = NULL;
}
}
//
// ------------------- auto ptr for tires --------------------------
//
bool setNewAuotPtr(int type, STire* pNew) {
if (pNew == NULL) return false;
taosThreadMutexLock(&tiresMutex);
STire* pOld = tires[type];
if (pOld != NULL) {
// previous have value, release self ref count
if (--pOld->ref == 0) {
freeTire(pOld);
}
}
// set new
tires[type] = pNew;
tires[type]->ref = 1;
taosThreadMutexUnlock(&tiresMutex);
return true;
}
// get ptr
STire* getAutoPtr(int type) {
if (tires[type] == NULL) {
return NULL;
}
taosThreadMutexLock(&tiresMutex);
tires[type]->ref++;
taosThreadMutexUnlock(&tiresMutex);
return tires[type];
}
// put back tire to tires[type], if tire not equal tires[type].p, need free tire
void putBackAutoPtr(int type, STire* tire) {
if (tire == NULL) {
return;
}
taosThreadMutexLock(&tiresMutex);
if (tires[type] != tire) {
// update by out, can't put back , so free
if (--tire->ref == 1) {
// support multi thread getAuotPtr
freeTire(tire);
}
} else {
tires[type]->ref--;
assert(tires[type]->ref > 0);
}
taosThreadMutexUnlock(&tiresMutex);
return;
}
//
// ------------------- var Word --------------------------
//
#define MAX_CACHED_CNT 100000 // max cached rows 10w
// write sql result to var name, return write rows cnt
int writeVarNames(int type, TAOS_RES* tres) {
// fetch row
TAOS_ROW row = taos_fetch_row(tres);
if (row == NULL) {
return 0;
}
TAOS_FIELD* fields = taos_fetch_fields(tres);
// create new tires
char tireType = type == WT_VAR_TABLE ? TIRE_TREE : TIRE_LIST;
STire* tire = createTire(tireType);
// enum rows
char name[1024];
int numOfRows = 0;
do {
int32_t* lengths = taos_fetch_lengths(tres);
int32_t bytes = lengths[0];
if (fields[0].type == TSDB_DATA_TYPE_INT) {
sprintf(name, "%d", *(int16_t*)row[0]);
} else {
memcpy(name, row[0], bytes);
}
name[bytes] = 0; // set string end
// insert to tire
insertWord(tire, name);
if (++numOfRows > MAX_CACHED_CNT) {
break;
}
row = taos_fetch_row(tres);
} while (row != NULL);
// replace old tire
setNewAuotPtr(type, tire);
return numOfRows;
}
bool firstMatchCommand(TAOS* con, SShellCmd* cmd);
//
// thread obtain var thread from db server
//
void* varObtainThread(void* param) {
int type = *(int*)param;
taosMemoryFree(param);
if (varCon == NULL || type > WT_FROM_DB_MAX) {
return NULL;
}
TAOS_RES* pSql = taos_query(varCon, varSqls[type]);
if (taos_errno(pSql)) {
taos_free_result(pSql);
return NULL;
}
// write var names from pSql
int cnt = writeVarNames(type, pSql);
// free sql
taos_free_result(pSql);
// check need call auto tab
if (cnt > 0 && waitAutoFill) {
// press tab key by program
firstMatchCommand(varCon, varCmd);
}
return NULL;
}
// only match next one word from all match words, return valuue must free by caller
char* matchNextPrefix(STire* tire, char* pre) {
SMatch* match = NULL;
// re-use last result
if (lastMatch) {
if (strcmp(pre, lastMatch->pre) == 0) {
// same pre
match = lastMatch;
}
}
if (match == NULL) {
// not same with last result
if (pre[0] == 0) {
// EMPTY PRE
match = enumAll(tire);
} else {
// NOT EMPTY
match = matchPrefix(tire, pre, NULL);
}
// save to lastMatch
if (match) {
if (lastMatch) freeMatch(lastMatch);
lastMatch = match;
}
}
// check valid
if (match == NULL || match->head == NULL) {
// no one matched
return false;
}
if (cursorVar == -1) {
// first
cursorVar = 0;
return strdup(match->head->word);
}
// according to cursorVar , calculate next one
int i = 0;
SMatchNode* item = match->head;
while (item) {
if (i == cursorVar + 1) {
// found next position ok
if (item->next == NULL) {
// match last item, reset cursorVar to head
cursorVar = -1;
} else {
cursorVar = i;
}
return strdup(item->word);
}
// check end item
if (item->next == NULL) {
// if cursorVar > var list count, return last and reset cursorVar
cursorVar = -1;
return strdup(item->word);
}
// move next
item = item->next;
i++;
}
return NULL;
}
// search pre word from tire tree, return value must free by caller
char* tireSearchWord(int type, char* pre) {
if (type == WT_TEXT) {
return NULL;
}
if (type > WT_FROM_DB_MAX) {
// NOT FROM DB , tires[type] alwary not null
STire* tire = tires[type];
if (tire == NULL) return NULL;
return matchNextPrefix(tire, pre);
}
// TYPE CONTEXT GET FROM DB
taosThreadMutexLock(&tiresMutex);
// check need obtain from server
if (tires[type] == NULL) {
waitAutoFill = true;
// need async obtain var names from db sever
if (threads[type] != NULL) {
if (taosThreadRunning(threads[type])) {
// thread running , need not obtain again, return
taosThreadMutexUnlock(&tiresMutex);
return NULL;
}
// destroy previous thread handle for new create thread handle
taosDestroyThread(threads[type]);
threads[type] = NULL;
}
// create new
void* param = taosMemoryMalloc(sizeof(int));
*((int*)param) = type;
threads[type] = taosCreateThread(varObtainThread, param);
taosThreadMutexUnlock(&tiresMutex);
return NULL;
}
taosThreadMutexUnlock(&tiresMutex);
// can obtain var names from local
STire* tire = getAutoPtr(type);
if (tire == NULL) {
return NULL;
}
char* str = matchNextPrefix(tire, pre);
// used finish, put back pointer to autoptr array
putBackAutoPtr(type, tire);
return str;
}
// match var word, word1 is pattern , word2 is input from shell
bool matchVarWord(SWord* word1, SWord* word2) {
// search input word from tire tree
char pre[512];
memcpy(pre, word2->word, word2->len);
pre[word2->len] = 0;
char* str = NULL;
if (word1->type == WT_VAR_ALLTABLE) {
// ALL_TABLE
str = tireSearchWord(WT_VAR_STABLE, pre);
if (str == NULL) {
str = tireSearchWord(WT_VAR_TABLE, pre);
if (str == NULL) return false;
}
} else {
// OTHER
str = tireSearchWord(word1->type, pre);
if (str == NULL) {
// not found or word1->type variable list not obtain from server, return not match
return false;
}
}
// free previous malloc
if (word1->free && word1->word) {
taosMemoryFree(word1->word);
}
// save
word1->word = str;
word1->len = strlen(str);
word1->free = true; // need free
return true;
}
//
// ------------------- match words --------------------------
//
// compare command cmd1 come from shellCommands , cmd2 come from user input
int32_t compareCommand(SWords* cmd1, SWords* cmd2) {
SWord* word1 = cmd1->head;
SWord* word2 = cmd2->head;
if (word1 == NULL || word2 == NULL) {
return -1;
}
for (int32_t i = 0; i < cmd1->count; i++) {
if (word1->type == WT_TEXT) {
// WT_TEXT match
if (word1->len == word2->len) {
if (strncasecmp(word1->word, word2->word, word1->len) != 0) return -1;
} else if (word1->len < word2->len) {
return -1;
} else {
// word1->len > word2->len
if (strncasecmp(word1->word, word2->word, word2->len) == 0) {
cmd1->matchIndex = i;
cmd1->matchLen = word2->len;
return i;
} else {
return -1;
}
}
} else {
// WT_VAR auto match any one word
if (word2->next == NULL) { // input words last one
if (matchVarWord(word1, word2)) {
cmd1->matchIndex = i;
cmd1->matchLen = word2->len;
varMode = true;
return i;
}
return -1;
}
}
// move next
word1 = word1->next;
word2 = word2->next;
if (word1 == NULL || word2 == NULL) {
return -1;
}
}
return -1;
}
// match command
SWords* matchCommand(SWords* input, bool continueSearch) {
int32_t count = SHELL_COMMAND_COUNT();
for (int32_t i = 0; i < count; i++) {
SWords* shellCommand = shellCommands + i;
if (continueSearch && lastMatchIndex != -1 && i <= lastMatchIndex) {
// new match must greate than lastMatchIndex
if (varMode && i == lastMatchIndex) {
// do nothing, var match on lastMatchIndex
} else {
continue;
}
}
// command is large
if (input->count > shellCommand->count) {
continue;
}
// compare
int32_t index = compareCommand(shellCommand, input);
if (index != -1) {
if (firstMatchIndex == -1) firstMatchIndex = i;
curMatchIndex = i;
return &shellCommands[i];
}
}
// not match
return NULL;
}
//
// ------------------- print screen --------------------------
//
// delete char count
void deleteCount(SShellCmd* cmd, int count) {
int size = 0;
int width = 0;
int prompt_size = 6;
shellClearScreen(cmd->endOffset + prompt_size, cmd->screenOffset + prompt_size);
// loop delete
while (--count >= 0 && cmd->cursorOffset > 0) {
shellGetPrevCharSize(cmd->command, cmd->cursorOffset, &size, &width);
memmove(cmd->command + cmd->cursorOffset - size, cmd->command + cmd->cursorOffset,
cmd->commandSize - cmd->cursorOffset);
cmd->commandSize -= size;
cmd->cursorOffset -= size;
cmd->screenOffset -= width;
cmd->endOffset -= width;
}
}
// show screen
void printScreen(TAOS* con, SShellCmd* cmd, SWords* match) {
// modify SShellCmd
if (firstMatchIndex == -1 || curMatchIndex == -1) {
// no match
return;
}
// first tab press
const char* str = NULL;
int strLen = 0;
if (firstMatchIndex == curMatchIndex && lastWordBytes == -1) {
// first press tab
SWord* word = MATCH_WORD(match);
str = word->word + match->matchLen;
strLen = word->len - match->matchLen;
lastMatchIndex = firstMatchIndex;
lastWordBytes = word->len;
} else {
if (lastWordBytes == -1) return;
deleteCount(cmd, lastWordBytes);
SWord* word = MATCH_WORD(match);
str = word->word;
strLen = word->len;
// set current to last
lastMatchIndex = curMatchIndex;
lastWordBytes = word->len;
}
// insert new
shellInsertChar(cmd, (char*)str, strLen);
}
// main key press tab , matched return true else false
bool firstMatchCommand(TAOS* con, SShellCmd* cmd) {
// parse command
SWords* input = (SWords*)taosMemoryMalloc(sizeof(SWords));
memset(input, 0, sizeof(SWords));
input->source = cmd->command;
input->source_len = cmd->commandSize;
parseCommand(input, false);
// if have many , default match first, if press tab again , switch to next
curMatchIndex = -1;
lastMatchIndex = -1;
SWords* match = matchCommand(input, true);
if (match == NULL) {
// not match , nothing to do
freeCommand(input);
taosMemoryFree(input);
return false;
}
// print to screen
printScreen(con, cmd, match);
#ifdef WINDOWS
printf("\r");
shellShowOnScreen(cmd);
#endif
freeCommand(input);
taosMemoryFree(input);
return true;
}
// create input source
void createInputFromFirst(SWords* input, SWords* firstMatch) {
//
// if next pressTabKey , input context come from firstMatch, set matched length with source_len
//
input->source = (char*)taosMemoryMalloc(1024);
memset((void*)input->source, 0, 1024);
SWord* word = firstMatch->head;
// source_len = full match word->len + half match with firstMatch->matchLen
for (int i = 0; i < firstMatch->matchIndex && word; i++) {
// combine source from each word
strncpy(input->source + input->source_len, word->word, word->len);
strcat(input->source, " "); // append blank splite
input->source_len += word->len + 1; // 1 is blank length
// move next
word = word->next;
}
// appand half matched word for last
if (word) {
strncpy(input->source + input->source_len, word->word, firstMatch->matchLen);
input->source_len += firstMatch->matchLen;
}
}
// user press Tabkey again is named next , matched return true else false
bool nextMatchCommand(TAOS* con, SShellCmd* cmd, SWords* firstMatch) {
if (firstMatch == NULL || firstMatch->head == NULL) {
return false;
}
SWords* input = (SWords*)taosMemoryMalloc(sizeof(SWords));
memset(input, 0, sizeof(SWords));
// create input from firstMatch
createInputFromFirst(input, firstMatch);
// parse input
parseCommand(input, false);
// if have many , default match first, if press tab again , switch to next
SWords* match = matchCommand(input, true);
if (match == NULL) {
// if not match , reset all index
firstMatchIndex = -1;
curMatchIndex = -1;
match = matchCommand(input, false);
if (match == NULL) {
freeCommand(input);
if (input->source) taosMemoryFree(input->source);
taosMemoryFree(input);
return false;
}
}
// print to screen
printScreen(con, cmd, match);
#ifdef WINDOWS
printf("\r");
shellShowOnScreen(cmd);
#endif
// free
if (input->source) {
taosMemoryFree(input->source);
input->source = NULL;
}
freeCommand(input);
taosMemoryFree(input);
return true;
}
// fill with type
bool fillWithType(TAOS* con, SShellCmd* cmd, char* pre, int type) {
// get type
STire* tire = tires[type];
char* str = matchNextPrefix(tire, pre);
if (str == NULL) {
return false;
}
// need insert part string
char* part = str + strlen(pre);
// show
int count = strlen(part);
shellInsertChar(cmd, part, count);
cntDel = count; // next press tab delete current append count
taosMemoryFree(str);
return true;
}
// fill with type
bool fillTableName(TAOS* con, SShellCmd* cmd, char* pre) {
// search stable and table
char* str = tireSearchWord(WT_VAR_STABLE, pre);
if (str == NULL) {
str = tireSearchWord(WT_VAR_TABLE, pre);
if (str == NULL) return false;
}
// need insert part string
char* part = str + strlen(pre);
// delete autofill count last append
if (cntDel > 0) {
deleteCount(cmd, cntDel);
cntDel = 0;
}
// show
int count = strlen(part);
shellInsertChar(cmd, part, count);
cntDel = count; // next press tab delete current append count
taosMemoryFree(str);
return true;
}
//
// find last word from sql select clause
// example :
// 1 select cou -> press tab select count(
// 2 select count(*),su -> select count(*), sum(
// 3 select count(*), su -> select count(*), sum(
//
char* lastWord(char* p) {
// get near from end revert find ' ' and ','
char* p1 = strrchr(p, ' ');
char* p2 = strrchr(p, ',');
if (p1 && p2) {
return p1 > p2 ? p1 + 1 : p2 + 1;
} else if (p1) {
return p1 + 1;
} else if (p2) {
return p2 + 1;
} else {
return p;
}
}
bool fieldsInputEnd(char* sql) {
// not in '()'
char* p1 = strrchr(sql, '(');
char* p2 = strrchr(sql, ')');
if (p1 && p2 == NULL) {
// like select count( ' '
return false;
} else if (p1 && p2 && p1 > p2) {
// like select sum(age), count( ' '
return false;
}
// not in ','
char* p3 = strrchr(sql, ',');
char* p = p3;
// like select ts, age,' '
if (p) {
++p;
bool allBlank = true; // after last ',' all char is blank
int cnt = 0; // blank count , like ' ' as one blank
char* plast = NULL; // last blank position
while (*p) {
if (*p == ' ') {
plast = p;
cnt++;
} else {
allBlank = false;
}
++p;
}
// any one word is not blank
if (allBlank) {
return false;
}
// like 'select count(*),sum(age) fr' need return true
if (plast && plast > p3 && p2 > p1 && plast > p2 && p1 > p3) {
return true;
}
// if last char not ' ', then not end field, like 'select count(*), su' can fill sum(
if (sql[strlen(sql) - 1] != ' ' && cnt <= 1) {
return false;
}
}
char* p4 = strrchr(sql, ' ');
if (p4 == NULL) {
// only one word
return false;
}
return true;
}
// need insert from
bool needInsertFrom(char* sql, int len) {
// last is blank
if (sql[len - 1] != ' ') {
// insert from keyword
return false;
}
// select fields input is end
if (!fieldsInputEnd(sql)) {
return false;
}
// can insert from keyword
return true;
}
// p is string following select keyword
bool appendAfterSelect(TAOS* con, SShellCmd* cmd, char* sql, int32_t len) {
char* p = strndup(sql, len);
// union all
char* p1;
do {
p1 = strstr(p, UNION_ALL);
if (p1) {
p = p1 + strlen(UNION_ALL);
}
} while (p1);
char* from = strstr(p, " from ");
// last word , maybe empty string or some letters of a string
char* last = lastWord(p);
bool ret = false;
if (from == NULL) {
bool fieldEnd = fieldsInputEnd(p);
// cheeck fields input end then insert from keyword
if (fieldEnd && p[len - 1] == ' ') {
shellInsertChar(cmd, "from", 4);
taosMemoryFree(p);
return true;
}
// fill funciton
if (fieldEnd) {
// fields is end , need match keyword
ret = fillWithType(con, cmd, last, WT_VAR_KEYWORD);
} else {
ret = fillWithType(con, cmd, last, WT_VAR_FUNC);
}
taosMemoryFree(p);
return ret;
}
// have from
char* blank = strstr(from + 6, " ");
if (blank == NULL) {
// no table name, need fill
ret = fillTableName(con, cmd, last);
} else {
ret = fillWithType(con, cmd, last, WT_VAR_KEYWORD);
}
taosMemoryFree(p);
return ret;
}
int32_t searchAfterSelect(char* p, int32_t len) {
// select * from st;
if (strncasecmp(p, "select ", 7) == 0) {
// check nest query
char* p1 = p + 7;
while (1) {
char* p2 = strstr(p1, "select ");
if (p2 == NULL) break;
p1 = p2 + 7;
}
return p1 - p;
}
// explain as select * from st;
if (strncasecmp(p, "explain select ", 15) == 0) {
return 15;
}
char* as_pos_end = strstr(p, " as select ");
if (as_pos_end == NULL) return -1;
as_pos_end += 11;
// create stream <stream_name> as select
if (strncasecmp(p, "create stream ", 14) == 0) {
return as_pos_end - p;
;
}
// create topic <topic_name> as select
if (strncasecmp(p, "create topic ", 13) == 0) {
return as_pos_end - p;
}
return -1;
}
bool matchSelectQuery(TAOS* con, SShellCmd* cmd) {
// if continue press Tab , delete bytes by previous autofill
if (cntDel > 0) {
deleteCount(cmd, cntDel);
cntDel = 0;
}
// match select ...
int len = cmd->commandSize;
char* p = cmd->command;
// remove prefix blank
while (p[0] == ' ' && len > 0) {
p++;
len--;
}
// special range
if (len < 7 || len > 512) {
return false;
}
// search
char* sql_cp = strndup(p, len);
int32_t n = searchAfterSelect(sql_cp, len);
taosMemoryFree(sql_cp);
if (n == -1 || n > len) return false;
p += n;
len -= n;
// append
return appendAfterSelect(con, cmd, p, len);
}
// if is input create fields or tags area, return true
bool isCreateFieldsArea(char* p) {
char* left = strrchr(p, '(');
if (left == NULL) {
// like 'create table st'
return false;
}
char* right = strrchr(p, ')');
if (right == NULL) {
// like 'create table st( '
return true;
}
if (left > right) {
// like 'create table st( ts timestamp, age int) tags(area '
return true;
}
return false;
}
bool matchCreateTable(TAOS* con, SShellCmd* cmd) {
// if continue press Tab , delete bytes by previous autofill
if (cntDel > 0) {
deleteCount(cmd, cntDel);
cntDel = 0;
}
// match select ...
int len = cmd->commandSize;
char* p = cmd->command;
// remove prefix blank
while (p[0] == ' ' && len > 0) {
p++;
len--;
}
// special range
if (len < 7 || len > 1024) {
return false;
}
// select and from
if (strncasecmp(p, "create table ", 13) != 0) {
// not select query clause
return false;
}
p += 13;
len -= 13;
char* ps = strndup(p, len);
bool ret = false;
char* last = lastWord(ps);
// check in create fields or tags input area
if (isCreateFieldsArea(ps)) {
ret = fillWithType(con, cmd, last, WT_VAR_DATATYPE);
}
// tags
if (!ret) {
// find only one ')' , can insert tags
char* p1 = strchr(ps, ')');
if (p1) {
if (strchr(p1 + 1, ')') == NULL && strstr(p1 + 1, "tags") == NULL) {
// can insert tags keyword
ret = fillWithType(con, cmd, last, WT_VAR_KEYTAGS);
}
}
}
// tb options
if (!ret) {
// find like create talbe st (...) tags(..) <here is fill tb option area>
char* p1 = strchr(ps, ')'); // first ')' end
if (p1) {
if (strchr(p1 + 1, ')')) { // second ')' end
// here is tb options area, can insert option
ret = fillWithType(con, cmd, last, WT_VAR_TBOPTION);
}
}
}
taosMemoryFree(ps);
return ret;
}
bool matchOther(TAOS* con, SShellCmd* cmd) {
int len = cmd->commandSize;
char* p = cmd->command;
// '\\'
if (p[len - 1] == '\\') {
// append '\G'
char a[] = "G;";
shellInsertChar(cmd, a, 2);
return true;
}
// too small
if (len < 8) return false;
// like 'from ( '
char* sql = strndup(p, len);
char* last = lastWord(sql);
if (strcmp(last, "from(") == 0) {
fillWithType(con, cmd, "", WT_VAR_KEYSELECT);
taosMemoryFree(sql);
return true;
}
if (strncmp(last, "(", 1) == 0) {
last += 1;
}
char* from = strstr(sql, " from");
// find last ' from'
while (from) {
char* p1 = strstr(from + 5, " from");
if (p1 == NULL) break;
from = p1;
}
if (from) {
// find next is '('
char* p2 = from + 5;
bool found = false; // found 'from ... ( ...' ... is any count of blank
bool found1 = false; // found '('
while (1) {
if (p2 == last || *p2 == '\0') {
// last word or string end
if (found1) {
found = true;
}
break;
} else if (*p2 == '(') {
found1 = true;
} else if (*p2 == ' ') {
// do nothing
} else {
// have any other char
break;
}
// move next
p2++;
}
if (found) {
fillWithType(con, cmd, last, WT_VAR_KEYSELECT);
taosMemoryFree(sql);
return true;
}
}
// INSERT
taosMemoryFree(sql);
return false;
}
// main key press tab
void pressTabKey(SShellCmd* cmd) {
// check
if (cmd->commandSize == 0) {
// empty
showHelp();
shellShowOnScreen(cmd);
return;
}
// save connection to global
varCmd = cmd;
bool matched = false;
// manual match like create table st( ...
matched = matchCreateTable(varCon, cmd);
if (matched) return;
// shellCommands match
if (firstMatchIndex == -1) {
matched = firstMatchCommand(varCon, cmd);
} else {
matched = nextMatchCommand(varCon, cmd, &shellCommands[firstMatchIndex]);
}
if (matched) return;
// NOT MATCHED ANYONE
// match other like '\G' ...
matched = matchOther(varCon, cmd);
if (matched) return;
// manual match like select * from ...
matched = matchSelectQuery(varCon, cmd);
if (matched) return;
return;
}
// press othr key
void pressOtherKey(char c) {
// reset global variant
firstMatchIndex = -1;
lastMatchIndex = -1;
curMatchIndex = -1;
lastWordBytes = -1;
// var names
cursorVar = -1;
varMode = false;
waitAutoFill = false;
cntDel = 0;
if (lastMatch) {
freeMatch(lastMatch);
lastMatch = NULL;
}
}
// put name into name, return name length
int getWordName(char* p, char* name, int nameLen) {
// remove prefix blank
while (*p == ' ') {
p++;
}
// get databases name;
int i = 0;
while (p[i] != 0 && i < nameLen - 1) {
name[i] = p[i];
i++;
if (p[i] == ' ' || p[i] == ';' || p[i] == '(') {
// name end
break;
}
}
name[i] = 0;
return i;
}
// deal use db, if have 'use' return true
bool dealUseDB(char* sql) {
// check use keyword
if (strncasecmp(sql, "use ", 4) != 0) {
return false;
}
char db[256];
char* p = sql + 4;
if (getWordName(p, db, sizeof(db)) == 0) {
// no name , return
return true;
}
// dbName is previous use open db name
if (strcasecmp(db, dbName) == 0) {
// same , no need switch
return true;
}
// switch new db
taosThreadMutexLock(&tiresMutex);
// STABLE set null
STire* tire = tires[WT_VAR_STABLE];
tires[WT_VAR_STABLE] = NULL;
if (tire) {
freeTire(tire);
}
// TABLE set null
tire = tires[WT_VAR_TABLE];
tires[WT_VAR_TABLE] = NULL;
if (tire) {
freeTire(tire);
}
// save
strcpy(dbName, db);
taosThreadMutexUnlock(&tiresMutex);
return true;
}
// deal create, if have 'create' return true
bool dealCreateCommand(char* sql) {
// check keyword
if (strncasecmp(sql, "create ", 7) != 0) {
return false;
}
char name[1024];
char* p = sql + 7;
if (getWordName(p, name, sizeof(name)) == 0) {
// no name , return
return true;
}
int type = -1;
// dbName is previous use open db name
if (strcasecmp(name, "database") == 0) {
type = WT_VAR_DBNAME;
} else if (strcasecmp(name, "table") == 0) {
if (strstr(sql, " tags") != NULL && strstr(sql, " using ") == NULL)
type = WT_VAR_STABLE;
else
type = WT_VAR_TABLE;
} else if (strcasecmp(name, "user") == 0) {
type = WT_VAR_USERNAME;
} else if (strcasecmp(name, "topic") == 0) {
type = WT_VAR_TOPIC;
} else if (strcasecmp(name, "stream") == 0) {
type = WT_VAR_STREAM;
} else {
// no match , return
return true;
}
// move next
p += strlen(name);
// get next word , that is table name
if (getWordName(p, name, sizeof(name)) == 0) {
// no name , return
return true;
}
// switch new db
taosThreadMutexLock(&tiresMutex);
// STABLE set null
STire* tire = tires[type];
if (tire) {
insertWord(tire, name);
}
taosThreadMutexUnlock(&tiresMutex);
return true;
}
// deal create, if have 'drop' return true
bool dealDropCommand(char* sql) {
// check keyword
if (strncasecmp(sql, "drop ", 5) != 0) {
return false;
}
char name[1024];
char* p = sql + 5;
if (getWordName(p, name, sizeof(name)) == 0) {
// no name , return
return true;
}
int type = -1;
// dbName is previous use open db name
if (strcasecmp(name, "database") == 0) {
type = WT_VAR_DBNAME;
} else if (strcasecmp(name, "table") == 0) {
type = WT_VAR_ALLTABLE;
} else if (strcasecmp(name, "dnode") == 0) {
type = WT_VAR_DNODEID;
} else if (strcasecmp(name, "user") == 0) {
type = WT_VAR_USERNAME;
} else if (strcasecmp(name, "topic") == 0) {
type = WT_VAR_TOPIC;
} else if (strcasecmp(name, "stream") == 0) {
type = WT_VAR_STREAM;
} else {
// no match , return
return true;
}
// move next
p += strlen(name);
// get next word , that is table name
if (getWordName(p, name, sizeof(name)) == 0) {
// no name , return
return true;
}
// switch new db
taosThreadMutexLock(&tiresMutex);
// STABLE set null
if (type == WT_VAR_ALLTABLE) {
bool del = false;
// del in stable
STire* tire = tires[WT_VAR_STABLE];
if (tire) del = deleteWord(tire, name);
// del in table
if (!del) {
tire = tires[WT_VAR_TABLE];
if (tire) del = deleteWord(tire, name);
}
} else {
// OTHER TYPE
STire* tire = tires[type];
if (tire) deleteWord(tire, name);
}
taosThreadMutexUnlock(&tiresMutex);
return true;
}
// callback autotab module after shell sql execute
void callbackAutoTab(char* sqlstr, TAOS* pSql, bool usedb) {
char* sql = sqlstr;
// remove prefix blank
while (*sql == ' ') {
sql++;
}
if (dealUseDB(sql)) {
// change to new db
return;
}
// create command add name to autotab
if (dealCreateCommand(sql)) {
return;
}
// drop command remove name from autotab
if (dealDropCommand(sql)) {
return;
}
return;
}
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