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tcrdb.c
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tcrdb.c
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/*************************************************************************************************
* The remote database API of Tokyo Tyrant
* Copyright (C) 2006-2010 FAL Labs
* This file is part of Tokyo Tyrant.
* Tokyo Tyrant is free software; you can redistribute it and/or modify it under the terms of
* the GNU Lesser General Public License as published by the Free Software Foundation; either
* version 2.1 of the License or any later version. Tokyo Tyrant 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. See the GNU Lesser General Public
* License for more details.
* You should have received a copy of the GNU Lesser General Public License along with Tokyo
* Tyrant; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA.
*************************************************************************************************/
#include "tcutil.h"
#include "tcadb.h"
#include "ttutil.h"
#include "tcrdb.h"
#include "myconf.h"
#define RDBRECONWAIT 0.1 // wait time to reconnect
#define RDBNUMCOLMAX 16 // maximum number of columns of the long double
typedef struct { // type of structure for a meta search query
pthread_t tid; // thread ID number
RDBQRY *qry; // query object
TCLIST *res; // response object
int max; // max number of retrieval
int skip; // skipping number of retrieval
} PARASEARCHARG;
typedef struct { // type of structure for a sort record
const char *cbuf; // pointer to the column buffer
int csiz; // size of the column buffer
char *obuf; // pointer to the sort key
int osiz; // size of the sort key
} RDBSORTREC;
/* private function prototypes */
static bool tcrdblockmethod(TCRDB *rdb);
static void tcrdbunlockmethod(TCRDB *rdb);
static bool tcrdbreconnect(TCRDB *rdb);
static bool tcrdbsend(TCRDB *rdb, const void *buf, int size);
static bool tcrdbtuneimpl(TCRDB *rdb, double timeout, int opts);
static bool tcrdbopenimpl(TCRDB *rdb, const char *host, int port);
static bool tcrdbcloseimpl(TCRDB *rdb);
static bool tcrdbputimpl(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz);
static bool tcrdbputkeepimpl(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz);
static bool tcrdbputcatimpl(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz);
static bool tcrdbputshlimpl(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz,
int width);
static bool tcrdbputnrimpl(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz);
static bool tcrdboutimpl(TCRDB *rdb, const void *kbuf, int ksiz);
static void *tcrdbgetimpl(TCRDB *rdb, const void *kbuf, int ksiz, int *sp);
static bool tcrdbmgetimpl(TCRDB *rdb, TCMAP *recs);
static int tcrdbvsizimpl(TCRDB *rdb, const void *kbuf, int ksiz);
static bool tcrdbiterinitimpl(TCRDB *rdb);
static void *tcrdbiternextimpl(TCRDB *rdb, int *sp);
static TCLIST *tcrdbfwmkeysimpl(TCRDB *rdb, const void *pbuf, int psiz, int max);
static int tcrdbaddintimpl(TCRDB *rdb, const void *kbuf, int ksiz, int num);
static double tcrdbadddoubleimpl(TCRDB *rdb, const void *kbuf, int ksiz, double num);
static void *tcrdbextimpl(TCRDB *rdb, const char *name, int opts,
const void *kbuf, int ksiz, const void *vbuf, int vsiz, int *sp);
static bool tcrdbsyncimpl(TCRDB *rdb);
static bool tcrdboptimizeimpl(TCRDB *rdb, const char *params);
static bool tcrdbvanishimpl(TCRDB *rdb);
static bool tcrdbcopyimpl(TCRDB *rdb, const char *path);
static bool tcrdbrestoreimpl(TCRDB *rdb, const char *path, uint64_t ts, int opts);
static bool tcrdbsetmstimpl(TCRDB *rdb, const char *host, int port, uint64_t ts, int opts);
const char *tcrdbexprimpl(TCRDB *rdb);
static uint64_t tcrdbrnumimpl(TCRDB *rdb);
static uint64_t tcrdbsizeimpl(TCRDB *rdb);
static char *tcrdbstatimpl(TCRDB *rdb);
static TCLIST *tcrdbmiscimpl(TCRDB *rdb, const char *name, int opts, const TCLIST *args);
static void tcrdbqrypopmeta(RDBQRY *qry, TCLIST *res);
static void *tcrdbparasearchworker(PARASEARCHARG *arg);
static long double tcrdbatof(const char *str);
static int rdbcmpsortrecstrasc(const RDBSORTREC *a, const RDBSORTREC *b);
static int rdbcmpsortrecstrdesc(const RDBSORTREC *a, const RDBSORTREC *b);
static int rdbcmpsortrecnumasc(const RDBSORTREC *a, const RDBSORTREC *b);
static int rdbcmpsortrecnumdesc(const RDBSORTREC *a, const RDBSORTREC *b);
/*************************************************************************************************
* API
*************************************************************************************************/
/* Get the message string corresponding to an error code. */
const char *tcrdberrmsg(int ecode){
switch(ecode){
case TTESUCCESS: return "success";
case TTEINVALID: return "invalid operation";
case TTENOHOST: return "host not found";
case TTEREFUSED: return "connection refused";
case TTESEND: return "send error";
case TTERECV: return "recv error";
case TTEKEEP: return "existing record";
case TTENOREC: return "no record found";
case TTEMISC: return "miscellaneous error";
}
return "unknown error";
}
/* Create a remote database object. */
TCRDB *tcrdbnew(void){
TCRDB *rdb = tcmalloc(sizeof(*rdb));
if(pthread_mutex_init(&rdb->mmtx, NULL) != 0) tcmyfatal("pthread_mutex_init failed");
if(pthread_key_create(&rdb->eckey, NULL) != 0) tcmyfatal("pthread_key_create failed");
rdb->host = NULL;
rdb->port = -1;
rdb->expr = NULL;
rdb->fd = -1;
rdb->sock = NULL;
rdb->timeout = UINT_MAX;
rdb->opts = 0;
tcrdbsetecode(rdb, TTESUCCESS);
return rdb;
}
/* Delete a remote database object. */
void tcrdbdel(TCRDB *rdb){
assert(rdb);
if(rdb->fd >= 0) tcrdbclose(rdb);
if(rdb->expr) tcfree(rdb->expr);
if(rdb->host) tcfree(rdb->host);
pthread_key_delete(rdb->eckey);
pthread_mutex_destroy(&rdb->mmtx);
tcfree(rdb);
}
/* Get the last happened error code of a remote database object. */
int tcrdbecode(TCRDB *rdb){
assert(rdb);
return (int)(intptr_t)pthread_getspecific(rdb->eckey);
}
/* Set the tuning parameters of a remote database object. */
bool tcrdbtune(TCRDB *rdb, double timeout, int opts){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbtuneimpl(rdb, timeout, opts);
pthread_cleanup_pop(1);
return rv;
}
/* Open a remote database. */
bool tcrdbopen(TCRDB *rdb, const char *host, int port){
assert(rdb && host);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbopenimpl(rdb, host, port);
pthread_cleanup_pop(1);
return rv;
}
/* Open a remote database with a simple server expression. */
bool tcrdbopen2(TCRDB *rdb, const char *expr){
assert(rdb && expr);
bool err = false;
int port;
char *host = ttbreakservexpr(expr, &port);
char *pv = strchr(expr, '#');
double tout = 0.0;
if(pv){
TCLIST *elems = tcstrsplit(pv + 1, "#");
int ln = tclistnum(elems);
for(int i = 0; i < ln; i++){
const char *elem = TCLISTVALPTR(elems, i);
pv = strchr(elem, '=');
if(!pv) continue;
*(pv++) = '\0';
if(!tcstricmp(elem, "host") || !tcstricmp(elem, "name")){
tcfree(host);
host = ttbreakservexpr(pv, NULL);
} else if(!tcstricmp(elem, "port")){
port = tcatoi(pv);
} else if(!tcstricmp(elem, "tout") || !tcstricmp(elem, "timeout")){
tout = tcatof(pv);
}
}
tclistdel(elems);
}
if(tout > 0) tcrdbtune(rdb, tout, RDBTRECON);
if(!tcrdbopen(rdb, host, port)) err = true;
tcfree(host);
return !err;
}
/* Close a remote database object. */
bool tcrdbclose(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbcloseimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Store a record into a remote database object. */
bool tcrdbput(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(rdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbputimpl(rdb, kbuf, ksiz, vbuf, vsiz);
pthread_cleanup_pop(1);
return rv;
}
/* Store a string record into a remote object. */
bool tcrdbput2(TCRDB *rdb, const char *kstr, const char *vstr){
assert(rdb && kstr && vstr);
return tcrdbput(rdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Store a new record into a remote database object. */
bool tcrdbputkeep(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(rdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbputkeepimpl(rdb, kbuf, ksiz, vbuf, vsiz);
pthread_cleanup_pop(1);
return rv;
}
/* Store a new string record into a remote database object. */
bool tcrdbputkeep2(TCRDB *rdb, const char *kstr, const char *vstr){
assert(rdb && kstr && vstr);
return tcrdbputkeep(rdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Concatenate a value at the end of the existing record in a remote database object. */
bool tcrdbputcat(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(rdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbputcatimpl(rdb, kbuf, ksiz, vbuf, vsiz);
pthread_cleanup_pop(1);
return rv;
}
/* Concatenate a string value at the end of the existing record in a remote database object. */
bool tcrdbputcat2(TCRDB *rdb, const char *kstr, const char *vstr){
assert(rdb && kstr && vstr);
return tcrdbputcat(rdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Concatenate a value at the end of the existing record and shift it to the left. */
bool tcrdbputshl(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz, int width){
assert(rdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0 && width >= 0);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbputshlimpl(rdb, kbuf, ksiz, vbuf, vsiz, width);
pthread_cleanup_pop(1);
return rv;
}
/* Concatenate a string value at the end of the existing record and shift it to the left. */
bool tcrdbputshl2(TCRDB *rdb, const char *kstr, const char *vstr, int width){
assert(rdb && kstr && vstr);
return tcrdbputshl(rdb, kstr, strlen(kstr), vstr, strlen(vstr), width);
}
/* Store a record into a remote database object without repsponse from the server. */
bool tcrdbputnr(TCRDB *rdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(rdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbputnrimpl(rdb, kbuf, ksiz, vbuf, vsiz);
pthread_cleanup_pop(1);
return rv;
}
/* Store a string record into a remote object without response from the server. */
bool tcrdbputnr2(TCRDB *rdb, const char *kstr, const char *vstr){
assert(rdb && kstr && vstr);
return tcrdbputnr(rdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Remove a record of a remote database object. */
bool tcrdbout(TCRDB *rdb, const void *kbuf, int ksiz){
assert(rdb && kbuf && ksiz >= 0);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdboutimpl(rdb, kbuf, ksiz);
pthread_cleanup_pop(1);
return rv;
}
/* Remove a string record of a remote database object. */
bool tcrdbout2(TCRDB *rdb, const char *kstr){
assert(rdb && kstr);
return tcrdbout(rdb, kstr, strlen(kstr));
}
/* Retrieve a record in a remote database object. */
void *tcrdbget(TCRDB *rdb, const void *kbuf, int ksiz, int *sp){
assert(rdb && kbuf && ksiz >= 0 && sp);
if(!tcrdblockmethod(rdb)) return NULL;
void *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbgetimpl(rdb, kbuf, ksiz, sp);
pthread_cleanup_pop(1);
return rv;
}
/* Retrieve a string record in a remote database object. */
char *tcrdbget2(TCRDB *rdb, const char *kstr){
assert(rdb && kstr);
int vsiz;
return tcrdbget(rdb, kstr, strlen(kstr), &vsiz);
}
/* Retrieve records in a remote database object. */
bool tcrdbget3(TCRDB *rdb, TCMAP *recs){
assert(rdb && recs);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbmgetimpl(rdb, recs);
pthread_cleanup_pop(1);
return rv;
}
/* Get the size of the value of a record in a remote database object. */
int tcrdbvsiz(TCRDB *rdb, const void *kbuf, int ksiz){
assert(rdb && kbuf && ksiz >= 0);
if(!tcrdblockmethod(rdb)) return -1;
int rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbvsizimpl(rdb, kbuf, ksiz);
pthread_cleanup_pop(1);
return rv;
}
/* Get the size of the value of a string record in a remote database object. */
int tcrdbvsiz2(TCRDB *rdb, const char *kstr){
assert(rdb && kstr);
return tcrdbvsiz(rdb, kstr, strlen(kstr));
}
/* Initialize the iterator of a remote database object. */
bool tcrdbiterinit(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbiterinitimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Get the next key of the iterator of a remote database object. */
void *tcrdbiternext(TCRDB *rdb, int *sp){
assert(rdb && sp);
if(!tcrdblockmethod(rdb)) return NULL;
void *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbiternextimpl(rdb, sp);
pthread_cleanup_pop(1);
return rv;
}
/* Get the next key string of the iterator of a remote database object. */
char *tcrdbiternext2(TCRDB *rdb){
assert(rdb);
int vsiz;
return tcrdbiternext(rdb, &vsiz);
}
/* Get forward matching keys in a remote database object. */
TCLIST *tcrdbfwmkeys(TCRDB *rdb, const void *pbuf, int psiz, int max){
assert(rdb && pbuf && psiz >= 0);
if(!tcrdblockmethod(rdb)) return tclistnew2(1);
TCLIST *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbfwmkeysimpl(rdb, pbuf, psiz, max);
pthread_cleanup_pop(1);
return rv;
}
/* Get forward matching string keys in a remote database object. */
TCLIST *tcrdbfwmkeys2(TCRDB *rdb, const char *pstr, int max){
assert(rdb && pstr);
return tcrdbfwmkeys(rdb, pstr, strlen(pstr), max);
}
/* Add an integer to a record in a remote database object. */
int tcrdbaddint(TCRDB *rdb, const void *kbuf, int ksiz, int num){
assert(rdb && kbuf && ksiz >= 0);
if(!tcrdblockmethod(rdb)) return INT_MIN;
int rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbaddintimpl(rdb, kbuf, ksiz, num);
pthread_cleanup_pop(1);
return rv;
}
/* Add a real number to a record in a remote database object. */
double tcrdbadddouble(TCRDB *rdb, const void *kbuf, int ksiz, double num){
assert(rdb && kbuf && ksiz >= 0);
if(!tcrdblockmethod(rdb)) return nan("");
double rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbadddoubleimpl(rdb, kbuf, ksiz, num);
pthread_cleanup_pop(1);
return rv;
}
/* Call a function of the scripting language extension. */
void *tcrdbext(TCRDB *rdb, const char *name, int opts,
const void *kbuf, int ksiz, const void *vbuf, int vsiz, int *sp){
assert(rdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!tcrdblockmethod(rdb)) return NULL;
void *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbextimpl(rdb, name, opts, kbuf, ksiz, vbuf, vsiz, sp);
pthread_cleanup_pop(1);
return rv;
}
/* Call a function of the scripting language extension with string parameters. */
char *tcrdbext2(TCRDB *rdb, const char *name, int opts, const char *kstr, const char *vstr){
assert(rdb && name && kstr && vstr);
int vsiz;
return tcrdbext(rdb, name, opts, kstr, strlen(kstr), vstr, strlen(vstr), &vsiz);
}
/* Synchronize updated contents of a remote database object with the file and the device. */
bool tcrdbsync(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbsyncimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Optimize the storage of a remove database object. */
bool tcrdboptimize(TCRDB *rdb, const char *params){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdboptimizeimpl(rdb, params);
pthread_cleanup_pop(1);
return rv;
}
/* Remove all records of a remote database object. */
bool tcrdbvanish(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbvanishimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Copy the database file of a remote database object. */
bool tcrdbcopy(TCRDB *rdb, const char *path){
assert(rdb && path);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbcopyimpl(rdb, path);
pthread_cleanup_pop(1);
return rv;
}
/* Restore the database file of a remote database object from the update log. */
bool tcrdbrestore(TCRDB *rdb, const char *path, uint64_t ts, int opts){
assert(rdb && path);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbrestoreimpl(rdb, path, ts, opts);
pthread_cleanup_pop(1);
return rv;
}
/* Set the replication master of a remote database object from the update log. */
bool tcrdbsetmst(TCRDB *rdb, const char *host, int port, uint64_t ts, int opts){
assert(rdb);
if(!tcrdblockmethod(rdb)) return false;
bool rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbsetmstimpl(rdb, host, port, ts, opts);
pthread_cleanup_pop(1);
return rv;
}
/* Set the replication master of a remote database object with a simple server expression. */
bool tcrdbsetmst2(TCRDB *rdb, const char *expr, uint64_t ts, int opts){
assert(rdb && expr);
bool err = false;
int port;
char *host = ttbreakservexpr(expr, &port);
if(!tcrdbsetmst(rdb, host, port, ts, opts)) err = true;
tcfree(host);
return !err;
}
/* Get the simple server expression of an abstract database object. */
const char *tcrdbexpr(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return NULL;
const char *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbexprimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Get the number of records of a remote database object. */
uint64_t tcrdbrnum(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return 0;
uint64_t rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbrnumimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Get the size of the database of a remote database object. */
uint64_t tcrdbsize(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return 0;
uint64_t rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbsizeimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Get the status string of the database of a remote database object. */
char *tcrdbstat(TCRDB *rdb){
assert(rdb);
if(!tcrdblockmethod(rdb)) return NULL;
char *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbstatimpl(rdb);
pthread_cleanup_pop(1);
return rv;
}
/* Call a versatile function for miscellaneous operations of a remote database object. */
TCLIST *tcrdbmisc(TCRDB *rdb, const char *name, int opts, const TCLIST *args){
assert(rdb && name && args);
if(!tcrdblockmethod(rdb)) return NULL;
TCLIST *rv;
pthread_cleanup_push((void (*)(void *))tcrdbunlockmethod, rdb);
rv = tcrdbmiscimpl(rdb, name, opts, args);
pthread_cleanup_pop(1);
return rv;
}
/*************************************************************************************************
* table extension
*************************************************************************************************/
/* Store a record into a remote database object. */
bool tcrdbtblput(TCRDB *rdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(rdb && pkbuf && pksiz >= 0 && cols);
TCLIST *args = tclistnew2(tcmaprnum(cols) * 2 + 1);
tclistpush(args, pkbuf, pksiz);
tcmapiterinit(cols);
const char *kbuf;
int ksiz;
while((kbuf = tcmapiternext(cols, &ksiz)) != NULL){
int vsiz;
const char *vbuf = tcmapiterval(kbuf, &vsiz);
tclistpush(args, kbuf, ksiz);
tclistpush(args, vbuf, vsiz);
}
TCLIST *rv = tcrdbmisc(rdb, "put", 0, args);
tclistdel(args);
if(!rv) return false;
tclistdel(rv);
return true;
}
/* Store a new record into a remote database object. */
bool tcrdbtblputkeep(TCRDB *rdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(rdb && pkbuf && pksiz >= 0 && cols);
TCLIST *args = tclistnew2(tcmaprnum(cols) * 2 + 1);
tclistpush(args, pkbuf, pksiz);
tcmapiterinit(cols);
const char *kbuf;
int ksiz;
while((kbuf = tcmapiternext(cols, &ksiz)) != NULL){
int vsiz;
const char *vbuf = tcmapiterval(kbuf, &vsiz);
tclistpush(args, kbuf, ksiz);
tclistpush(args, vbuf, vsiz);
}
TCLIST *rv = tcrdbmisc(rdb, "putkeep", 0, args);
tclistdel(args);
if(!rv){
if(tcrdbecode(rdb) == TTEMISC) tcrdbsetecode(rdb, TTEKEEP);
return false;
}
tclistdel(rv);
return true;
}
/* Concatenate columns of the existing record in a remote database object. */
bool tcrdbtblputcat(TCRDB *rdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(rdb && pkbuf && pksiz >= 0 && cols);
TCLIST *args = tclistnew2(tcmaprnum(cols) * 2 + 1);
tclistpush(args, pkbuf, pksiz);
tcmapiterinit(cols);
const char *kbuf;
int ksiz;
while((kbuf = tcmapiternext(cols, &ksiz)) != NULL){
int vsiz;
const char *vbuf = tcmapiterval(kbuf, &vsiz);
tclistpush(args, kbuf, ksiz);
tclistpush(args, vbuf, vsiz);
}
TCLIST *rv = tcrdbmisc(rdb, "putcat", 0, args);
tclistdel(args);
if(!rv) return false;
tclistdel(rv);
return true;
}
/* Remove a record of a remote database object. */
bool tcrdbtblout(TCRDB *rdb, const void *pkbuf, int pksiz){
assert(rdb && pkbuf && pksiz >= 0);
TCLIST *args = tclistnew2(1);
tclistpush(args, pkbuf, pksiz);
TCLIST *rv = tcrdbmisc(rdb, "out", 0, args);
tclistdel(args);
if(!rv){
if(tcrdbecode(rdb) == TTEMISC) tcrdbsetecode(rdb, TTENOREC);
return false;
}
tclistdel(rv);
return true;
}
/* Retrieve a record in a remote database object. */
TCMAP *tcrdbtblget(TCRDB *rdb, const void *pkbuf, int pksiz){
assert(rdb && pkbuf && pksiz >= 0);
TCLIST *args = tclistnew2(1);
tclistpush(args, pkbuf, pksiz);
TCLIST *rv = tcrdbmisc(rdb, "get", RDBMONOULOG, args);
tclistdel(args);
if(!rv){
if(tcrdbecode(rdb) == TTEMISC) tcrdbsetecode(rdb, TTENOREC);
return NULL;
}
int num = tclistnum(rv);
TCMAP *cols = tcmapnew2(num / 2 + 1);
num--;
for(int i = 0; i < num; i += 2){
int ksiz;
const char *kbuf = tclistval(rv, i, &ksiz);
int vsiz;
const char *vbuf = tclistval(rv, i + 1, &vsiz);
tcmapput(cols, kbuf, ksiz, vbuf, vsiz);
}
tclistdel(rv);
return cols;
}
/* Set a column index to a remote database object. */
bool tcrdbtblsetindex(TCRDB *rdb, const char *name, int type){
assert(rdb && name);
TCLIST *args = tclistnew2(2);
tclistpush2(args, name);
char typestr[TTNUMBUFSIZ];
sprintf(typestr, "%d", type);
tclistpush2(args, typestr);
TCLIST *rv = tcrdbmisc(rdb, "setindex", 0, args);
tclistdel(args);
if(!rv) return false;
tclistdel(rv);
return true;
}
/* Generate a unique ID number of a remote database object. */
int64_t tcrdbtblgenuid(TCRDB *rdb){
assert(rdb);
TCLIST *args = tclistnew2(1);
TCLIST *rv = tcrdbmisc(rdb, "genuid", 0, args);
tclistdel(args);
if(!rv) return -1;
int64_t uid = -1;
if(tclistnum(rv) > 0) uid = tcatoi(tclistval2(rv, 0));
tclistdel(rv);
return uid;
}
/* Create a query object. */
RDBQRY *tcrdbqrynew(TCRDB *rdb){
assert(rdb);
RDBQRY *qry = tcmalloc(sizeof(*qry));
qry->rdb = rdb;
qry->args = tclistnew();
qry->hint = tcxstrnew();
tclistpush(qry->args, "hint", 4);
return qry;
}
/* Delete a query object. */
void tcrdbqrydel(RDBQRY *qry){
assert(qry);
tcxstrdel(qry->hint);
tclistdel(qry->args);
tcfree(qry);
}
/* Add a narrowing condition to a query object. */
void tcrdbqryaddcond(RDBQRY *qry, const char *name, int op, const char *expr){
assert(qry && name && expr);
TCXSTR *xstr = tcxstrnew();
tcxstrcat2(xstr, "addcond");
tcxstrcat(xstr, "\0", 1);
tcxstrcat2(xstr, name);
tcxstrcat(xstr, "\0", 1);
tcxstrprintf(xstr, "%d", op);
tcxstrcat(xstr, "\0", 1);
tcxstrcat2(xstr, expr);
tclistpush(qry->args, tcxstrptr(xstr), tcxstrsize(xstr));
tcxstrdel(xstr);
}
/* Set the order of a query object. */
void tcrdbqrysetorder(RDBQRY *qry, const char *name, int type){
assert(qry && name);
TCXSTR *xstr = tcxstrnew();
tcxstrcat2(xstr, "setorder");
tcxstrcat(xstr, "\0", 1);
tcxstrcat2(xstr, name);
tcxstrcat(xstr, "\0", 1);
tcxstrprintf(xstr, "%d", type);
tclistpush(qry->args, tcxstrptr(xstr), tcxstrsize(xstr));
tcxstrdel(xstr);
}
/* Set the limit number of records of the result of a query object. */
void tcrdbqrysetlimit(RDBQRY *qry, int max, int skip){
TCXSTR *xstr = tcxstrnew();
tcxstrcat2(xstr, "setlimit");
tcxstrcat(xstr, "\0", 1);
tcxstrprintf(xstr, "%d", max);
tcxstrcat(xstr, "\0", 1);
tcxstrprintf(xstr, "%d", skip);
tclistpush(qry->args, tcxstrptr(xstr), tcxstrsize(xstr));
tcxstrdel(xstr);
}
/* Execute the search of a query object. */
TCLIST *tcrdbqrysearch(RDBQRY *qry){
assert(qry);
tcxstrclear(qry->hint);
TCLIST *rv = tcrdbmisc(qry->rdb, "search", RDBMONOULOG, qry->args);
if(!rv) return tclistnew2(1);
tcrdbqrypopmeta(qry, rv);
return rv;
}
/* Remove each record corresponding to a query object. */
bool tcrdbqrysearchout(RDBQRY *qry){
assert(qry);
TCLIST *args = tclistdup(qry->args);
tclistpush2(args, "out");
tcxstrclear(qry->hint);
TCLIST *rv = tcrdbmisc(qry->rdb, "search", 0, args);
tclistdel(args);
if(!rv) return false;
tcrdbqrypopmeta(qry, rv);
tclistdel(rv);
return true;
}
/* Get records corresponding to the search of a query object. */
TCLIST *tcrdbqrysearchget(RDBQRY *qry){
assert(qry);
TCLIST *args = tclistdup(qry->args);
tclistpush2(args, "get");
tcxstrclear(qry->hint);
TCLIST *rv = tcrdbmisc(qry->rdb, "search", RDBMONOULOG, args);
tclistdel(args);
if(!rv) return tclistnew2(1);
tcrdbqrypopmeta(qry, rv);
return rv;
}
/* Get columns of a record in a search result. */
TCMAP *tcrdbqryrescols(TCLIST *res, int index){
assert(res && index >= 0);
if(index >= tclistnum(res)) return NULL;
int csiz;
const char *cbuf = tclistval(res, index, &csiz);
return tcstrsplit4(cbuf, csiz);
}
/* Get the count of corresponding records of a query object. */
int tcrdbqrysearchcount(RDBQRY *qry){
assert(qry);
TCLIST *args = tclistdup(qry->args);
tclistpush2(args, "count");
tcxstrclear(qry->hint);
TCLIST *rv = tcrdbmisc(qry->rdb, "search", RDBMONOULOG, args);
tclistdel(args);
if(!rv) return 0;
tcrdbqrypopmeta(qry, rv);
int count = tclistnum(rv) > 0 ? tcatoi(tclistval2(rv, 0)) : 0;
tclistdel(rv);
return count;
}
/* Get the hint string of a query object. */
const char *tcrdbqryhint(RDBQRY *qry){
assert(qry);
return tcxstrptr(qry->hint);
}
/* Retrieve records with multiple query objects and get the set of the result. */
TCLIST *tcrdbmetasearch(RDBQRY **qrys, int num, int type){
assert(qrys && num >= 0);
if(num < 1) return tclistnew2(1);
if(num < 2) return tcrdbqrysearch(qrys[0]);
RDBQRY *qry = qrys[0];
TCLIST *args = tclistdup(qry->args);
for(int i = 1; i < num; i++){
tclistpush(args, "next", 4);
const TCLIST *targs = qrys[i]->args;
int tanum = tclistnum(targs);
for(int j = 0; j < tanum; j++){
int vsiz;
const char *vbuf = tclistval(targs, j, &vsiz);
tclistpush(args, vbuf, vsiz);
}
}
char buf[TTNUMBUFSIZ];
int len = sprintf(buf, "mstype");
len += 1 + sprintf(buf + len + 1, "%d", type);
tclistpush(args, buf, len);
tcxstrclear(qry->hint);
TCLIST *rv = tcrdbmisc(qry->rdb, "metasearch", RDBMONOULOG, args);
tclistdel(args);
if(!rv) rv = tclistnew2(1);
tcrdbqrypopmeta(qrys[0], rv);
return rv;
}
/* Search for multiple servers in parallel. */
TCLIST *tcrdbparasearch(RDBQRY **qrys, int num){
assert(qrys && num >= 0);
if(num < 1) return tclistnew2(1);
if(num < 2) return tcrdbqrysearchget(qrys[0]);
int ocs = PTHREAD_CANCEL_DISABLE;
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &ocs);
TCLIST *oargs = qrys[0]->args;
char *oname = NULL;
int otype = 0;
int max = INT_MAX / 2;
int skip = 0;
for(int i = 0; i < tclistnum(oargs); i++){
int osiz;
const char *obuf = tclistval(oargs, i, &osiz);
if(!strcmp(obuf, "setlimit")){
TCLIST *elems = tcstrsplit2(obuf, osiz);
if(tclistnum(elems) > 1) max = tcatoi(tclistval2(elems, 1));
if(tclistnum(elems) > 2) skip = tcatoi(tclistval2(elems, 2));
tclistdel(elems);
} else if(!strcmp(obuf, "setorder")){
TCLIST *elems = tcstrsplit2(obuf, osiz);
if(tclistnum(elems) > 2){
oname = tcstrdup(tclistval2(elems, 1));
otype = tcatoi(tclistval2(elems, 2));
}
tclistdel(elems);
}
}
int onsiz = oname ? strlen(oname) : 0;
if(max < 1 || max > INT_MAX / 2) max = INT_MAX / 2;
if(skip < 0) skip = 0;
PARASEARCHARG args[num];
for(int i = 0; i < num; i++){
PARASEARCHARG *arg = args + i;
arg->qry = qrys[i];
arg->res = NULL;
arg->max = max;
arg->skip = skip;
if(pthread_create(&arg->tid, NULL, (void *(*)(void *))tcrdbparasearchworker, arg) != 0)
arg->qry = NULL;
}
int all = 0;
for(int i = 0; i < num; i++){
PARASEARCHARG *arg = args + i;
if(arg->qry) pthread_join(arg->tid, NULL);
if(arg->res){
tcrdbqrypopmeta(arg->qry, arg->res);
all += tclistnum(arg->res);
}
}
RDBSORTREC *recs = tcmalloc(sizeof(*recs) * all + 1);
int rnum = 0;
for(int i = 0; i < num; i++){
PARASEARCHARG *arg = args + i;
if(arg->res){
int tnum = tclistnum(arg->res);
for(int j = 0; j < tnum; j++){
int csiz;
const char *cbuf = tclistval(arg->res, j, &csiz);
recs[rnum].cbuf = cbuf;
recs[rnum].csiz = csiz;
recs[rnum].obuf = NULL;
recs[rnum].osiz = 0;
if(oname){
TCMAP *cols = tcstrsplit4(cbuf, csiz);