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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2010, 2013 Oracle and/or its affiliates. All rights reserved.
*/
/*
** This file contains code used to implement the .stat command. Any other shell
** features should also be added here.
*/
#include <errno.h>
#include <assert.h>
#include "sqlite3.h"
#include "btreeInt.h"
/*
* Print statistics for tables and/or indexes using DB->stat_print()
*
* If msgfile is NULL, then statistics will be printed into stdout, otherwise
* the statistics will be printed into the designated output stream.
*
* If name input is NULL, then statistics for all tables and indexes are
* printed, otherwise only the statistics for that table or index is printed.
*
* Returns SQLITE_OK if there are no errors, -1 if an error occurred.
*/
SQLITE_API int bdbSqlDbStatPrint(sqlite3 *db, FILE *msgfile, char *name)
{
BtCursor cur, *pCur = NULL;
Btree *p;
char **azResult = NULL;
char *zErrMsg = NULL;
char *zSql = NULL;
DB *dbp;
FILE *out;
int i, rc, nRow, iTable, openTransaction = 0;
if (!db || !db->aDb)
return -1;
p = db->aDb[0].pBt;
assert(p);
if (!(out = msgfile))
out = stdout;
/* Construct query to get root page number(s) */
if (!name) {
zSql = sqlite3_mprintf(
"SELECT type,name,rootpage FROM sqlite_master");
}
else {
zSql = sqlite3_mprintf(
"SELECT type,name,rootpage FROM sqlite_master "
"WHERE name='%q'", name);
}
if (!zSql) {
fprintf(stderr, "Error: memory allocation failed\n");
goto err;
}
rc = sqlite3_get_table(db, zSql, &azResult, &nRow, 0, &zErrMsg);
(void)sqlite3_free(zSql);
if (zErrMsg) {
fprintf(stderr, "Error: %s\n", zErrMsg);
(void)sqlite3_free(zErrMsg);
if (rc == SQLITE_OK)
rc = -1;
goto err;
}
else if (rc != SQLITE_OK) {
fprintf(stderr, "Error: querying sqlite_master\n");
goto err;
}
else if (nRow < 1)
goto err;
rc = sqlite3BtreeBeginTrans(p, 0);
if (rc != SQLITE_OK) {
fprintf(stderr, "Error: could not enter a transaction\n");
goto err;
}
openTransaction = 1;
/* Print stats for all tables in query's result */
for (i = 1; i <= nRow; i++) {
fprintf(out, "Statistics for %s \"%s\"\n",
azResult[3*i], azResult[3*i + 1]);
iTable = atoi(azResult[3*i + 2]);
pCur = &cur;
(void)sqlite3BtreeCursorZero(pCur);
/* Acquire a read cursor to retrieve the dbp for the table */
rc = sqlite3BtreeCursor(p, iTable, 0, NULL, pCur);
if (pCur->eState == CURSOR_FAULT)
rc = pCur->error;
if (rc != SQLITE_OK) {
fprintf(stderr, "Error: could not create cursor\n");
goto err;
}
assert(pCur->cached_db && pCur->cached_db->dbp);
dbp = pCur->cached_db->dbp;
(void)dbp->set_msgfile(dbp, out);
(void)dbp->stat_print(dbp, DB_STAT_ALL);
(void)sqlite3BtreeCloseCursor(&cur);
pCur = NULL;
}
err:
if (pCur)
(void)sqlite3BtreeCloseCursor(pCur);
if (openTransaction)
sqlite3BtreeCommit(p);
if (azResult)
(void)sqlite3_free_table(azResult);
return rc;
}
/*
* Print statistics for the database using DB_ENV->stat_print()
*
* If msgfile is NULL, then statistics will be printed into stdout, otherwise
* the statistics will be printed into the designated output stream.
*
* Returns SQLITE_OK if there are no errors, -1 if an error occurred.
*/
SQLITE_API int bdbSqlEnvStatPrint(sqlite3 *db, FILE *msgfile)
{
BtShared *pBt;
Btree *p;
FILE *out;
if (!db || !db->aDb)
return -1;
p = db->aDb[0].pBt;
assert(p);
pBt = p->pBt;
assert(pBt);
if (!p->connected || !(pBt->dbenv))
return -1;
if (!(out = msgfile))
out = stdout;
fprintf(out, "Statistics for environment\n");
(void)(pBt->dbenv)->set_msgfile(pBt->dbenv, out);
(void)(pBt->dbenv)->stat_print(pBt->dbenv, DB_STAT_ALL);
return SQLITE_OK;
}
/*
* Print replication summary statistics using DB_ENV->rep_stat_print()
*
* If msgfile is NULL, then statistics will be printed into stdout, otherwise
* the statistics will be printed into the designated output stream.
*
* Returns SQLITE_OK if there are no errors, -1 if an error occurred.
*/
SQLITE_API int bdbSqlRepSumStatPrint(sqlite3 *db, FILE *msgfile)
{
BtShared *pBt;
Btree *p;
FILE *out;
if (!db || !db->aDb)
return -1;
p = db->aDb[0].pBt;
assert(p);
pBt = p->pBt;
assert(pBt);
if (!p->connected || !(pBt->dbenv))
return -1;
if (!(out = msgfile))
out = stdout;
fprintf(out, "Replication summary statistics\n");
(void)(pBt->dbenv)->set_msgfile(pBt->dbenv, out);
(void)(pBt->dbenv)->rep_stat_print(pBt->dbenv, DB_STAT_SUMMARY);
return SQLITE_OK;
}
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