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/* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
#include <ndb_global.h>
#include <ndb_opts.h>
#include <NdbOut.hpp>
#include <NdbApi.hpp>
#include <NdbMain.h>
#include <NDBT.hpp>
#include <NdbSleep.h>
#include <UtilTransactions.hpp>
static int
select_count(Ndb* pNdb, const NdbDictionary::Table* pTab,
int parallelism,
int* count_rows,
NdbOperation::LockMode lock);
NDB_STD_OPTS_VARS;
static const char* _dbname = "TEST_DB";
static int _parallelism = 240;
static int _lock = 0;
const char *load_default_groups[]= { "mysql_cluster",0 };
static struct my_option my_long_options[] =
{
NDB_STD_OPTS("ndb_desc"),
{ "database", 'd', "Name of database table is in",
&_dbname, &_dbname, 0,
GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
{ "parallelism", 'p', "parallelism",
&_parallelism, &_parallelism, 0,
GET_INT, REQUIRED_ARG, 240, 0, 0, 0, 0, 0 },
{ "lock", 'l', "Read(0), Read-hold(1), Exclusive(2)",
&_lock, &_lock, 0,
GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};
static void usage()
{
#ifdef NOT_USED
char desc[] =
"tabname1 ... tabnameN\n"\
"This program will count the number of records in tables\n";
#endif
ndb_std_print_version();
print_defaults(MYSQL_CONFIG_NAME,load_default_groups);
puts("");
my_print_help(my_long_options);
my_print_variables(my_long_options);
}
int main(int argc, char** argv){
NDB_INIT(argv[0]);
load_defaults("my",load_default_groups,&argc,&argv);
int ho_error;
#ifndef DBUG_OFF
opt_debug= "d:t:O,/tmp/ndb_select_count.trace";
#endif
if ((ho_error=handle_options(&argc, &argv, my_long_options,
ndb_std_get_one_option)))
return NDBT_ProgramExit(NDBT_WRONGARGS);
if (argc < 1) {
usage();
return NDBT_ProgramExit(NDBT_WRONGARGS);
}
Ndb_cluster_connection con(opt_connect_str);
con.set_name("ndb_select_count");
if(con.connect(12, 5, 1) != 0)
{
ndbout << "Unable to connect to management server." << endl;
return NDBT_ProgramExit(NDBT_FAILED);
}
if (con.wait_until_ready(30,0) < 0)
{
ndbout << "Cluster nodes not ready in 30 seconds." << endl;
return NDBT_ProgramExit(NDBT_FAILED);
}
Ndb MyNdb(&con, _dbname );
if(MyNdb.init() != 0){
ERR(MyNdb.getNdbError());
return NDBT_ProgramExit(NDBT_FAILED);
}
for(int i = 0; i<argc; i++){
// Check if table exists in db
const NdbDictionary::Table * pTab = NDBT_Table::discoverTableFromDb(&MyNdb, argv[i]);
if(pTab == NULL){
ndbout << " Table " << argv[i] << " does not exist!" << endl;
continue;
}
int rows = 0;
if (select_count(&MyNdb, pTab, _parallelism, &rows,
(NdbOperation::LockMode)_lock) != 0){
return NDBT_ProgramExit(NDBT_FAILED);
}
ndbout << rows << " records in table " << argv[i] << endl;
}
return NDBT_ProgramExit(NDBT_OK);
}
int
select_count(Ndb* pNdb, const NdbDictionary::Table* pTab,
int parallelism,
int* count_rows,
NdbOperation::LockMode lock){
int retryAttempt = 0;
const int retryMax = 100;
int check;
NdbTransaction *pTrans;
NdbScanOperation *pOp;
while (true){
if (retryAttempt >= retryMax){
g_info << "ERROR: has retried this operation " << retryAttempt
<< " times, failing!" << endl;
return NDBT_FAILED;
}
pTrans = pNdb->startTransaction();
if (pTrans == NULL) {
const NdbError err = pNdb->getNdbError();
if (err.status == NdbError::TemporaryError){
NdbSleep_MilliSleep(50);
retryAttempt++;
continue;
}
ERR(err);
return NDBT_FAILED;
}
pOp = pTrans->getNdbScanOperation(pTab->getName());
if (pOp == NULL) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return NDBT_FAILED;
}
if( pOp->readTuples(NdbScanOperation::LM_Dirty) ) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return NDBT_FAILED;
}
check = pOp->interpret_exit_last_row();
if( check == -1 ) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return NDBT_FAILED;
}
Uint64 tmp;
Uint32 row_size;
pOp->getValue(NdbDictionary::Column::ROW_COUNT, (char*)&tmp);
pOp->getValue(NdbDictionary::Column::ROW_SIZE, (char*)&row_size);
check = pTrans->execute(NdbTransaction::NoCommit);
if( check == -1 ) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return NDBT_FAILED;
}
Uint64 row_count = 0;
int eof;
while((eof = pOp->nextResult(true)) == 0){
row_count += tmp;
}
if (eof == -1) {
const NdbError err = pTrans->getNdbError();
if (err.status == NdbError::TemporaryError){
pNdb->closeTransaction(pTrans);
NdbSleep_MilliSleep(50);
retryAttempt++;
continue;
}
ERR(err);
pNdb->closeTransaction(pTrans);
return NDBT_FAILED;
}
pNdb->closeTransaction(pTrans);
if (count_rows != NULL){
*count_rows = row_count;
}
return NDBT_OK;
}
return NDBT_FAILED;
}
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