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mariadb/ndb/tools/select_all.cpp

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/* Copyright (C) 2003 MySQL AB
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <ndb_global.h>
#include <ndb_opts.h>
#include <NdbOut.hpp>
#include <NdbApi.hpp>
#include <NdbMain.h>
#include <NDBT.hpp>
#include <NdbSleep.h>
int scanReadRecords(Ndb*,
const NdbDictionary::Table*,
const NdbDictionary::Index*,
int parallel,
int lockType,
bool headers,
bool useHexFormat,
char delim,
bool orderby,
bool descending);
NDB_STD_OPTS_VARS;
static const char* _dbname = "TEST_DB";
static const char* _delimiter = "\t";
static int _unqualified, _header, _parallelism, _useHexFormat, _lock,
_order, _descending;
static struct my_option my_long_options[] =
{
NDB_STD_OPTS("ndb_desc"),
{ "database", 'd', "Name of database table is in",
(gptr*) &_dbname, (gptr*) &_dbname, 0,
GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
{ "parallelism", 'p', "parallelism",
(gptr*) &_parallelism, (gptr*) &_parallelism, 0,
GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
{ "lock", 'l', "Read(0), Read-hold(1), Exclusive(2)",
(gptr*) &_lock, (gptr*) &_lock, 0,
GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
{ "order", 'o', "Sort resultset according to index",
(gptr*) &_order, (gptr*) &_order, 0,
GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 },
{ "descending", 'z', "Sort descending (requires order flag)",
(gptr*) &_descending, (gptr*) &_descending, 0,
GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 },
{ "header", 'h', "Print header",
(gptr*) &_header, (gptr*) &_header, 0,
GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0 },
{ "useHexFormat", 'x', "Output numbers in hexadecimal format",
(gptr*) &_useHexFormat, (gptr*) &_useHexFormat, 0,
GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 },
{ "delimiter", 'D', "Column delimiter",
(gptr*) &_delimiter, (gptr*) &_delimiter, 0,
GET_STR, 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()
{
char desc[] =
"tabname\n"\
"This program reads all records from one table in NDB Cluster\n"\
"and print them to stdout. This is performed using a scan read.\n"\
"(It only print error messages if it encounters a permanent error.)\n"\
"It can also be used to dump the content of a table to file \n"\
" ex: select_all --no-header --delimiter=';' T4 > T4.data\n";
ndb_std_print_version();
my_print_help(my_long_options);
my_print_variables(my_long_options);
}
int main(int argc, char** argv){
NDB_INIT(argv[0]);
const char *load_default_groups[]= { "mysql_cluster",0 };
load_defaults("my",load_default_groups,&argc,&argv);
const char* _tabname;
int ho_error;
#ifndef DBUG_OFF
opt_debug= "d:t:O,/tmp/ndb_select_all.trace";
#endif
if ((ho_error=handle_options(&argc, &argv, my_long_options,
ndb_std_get_one_option)))
return NDBT_ProgramExit(NDBT_WRONGARGS);
if ((_tabname = argv[0]) == 0) {
usage();
return NDBT_ProgramExit(NDBT_WRONGARGS);
}
Ndb_cluster_connection con(opt_connect_str);
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);
}
// Check if table exists in db
const NdbDictionary::Table* pTab = NDBT_Table::discoverTableFromDb(&MyNdb, _tabname);
const NdbDictionary::Index * pIdx = 0;
if(argc > 1){
pIdx = MyNdb.getDictionary()->getIndex(argv[1], _tabname);
}
if(pTab == NULL){
ndbout << " Table " << _tabname << " does not exist!" << endl;
return NDBT_ProgramExit(NDBT_WRONGARGS);
}
if(argc > 1 && pIdx == 0)
{
ndbout << " Index " << argv[1] << " does not exists" << endl;
}
if(_order && pIdx == NULL){
ndbout << " Order flag given without an index" << endl;
return NDBT_ProgramExit(NDBT_WRONGARGS);
}
if (_descending && ! _order) {
ndbout << " Descending flag given without order flag" << endl;
return NDBT_ProgramExit(NDBT_WRONGARGS);
}
if (scanReadRecords(&MyNdb,
pTab,
pIdx,
_parallelism,
_lock,
_header,
_useHexFormat,
(char)*_delimiter, _order, _descending) != 0){
return NDBT_ProgramExit(NDBT_FAILED);
}
return NDBT_ProgramExit(NDBT_OK);
}
int scanReadRecords(Ndb* pNdb,
const NdbDictionary::Table* pTab,
const NdbDictionary::Index* pIdx,
int parallel,
int _lock,
bool headers,
bool useHexFormat,
char delimiter, bool order, bool descending){
int retryAttempt = 0;
const int retryMax = 100;
int check;
NdbTransaction *pTrans;
NdbScanOperation *pOp;
NdbIndexScanOperation * pIOp= 0;
NDBT_ResultRow * row = new NDBT_ResultRow(*pTab, delimiter);
while (true){
if (retryAttempt >= retryMax){
ndbout << "ERROR: has retried this operation " << retryAttempt
<< " times, failing!" << endl;
return -1;
}
pTrans = pNdb->startTransaction();
if (pTrans == NULL) {
const NdbError err = pNdb->getNdbError();
if (err.status == NdbError::TemporaryError){
NdbSleep_MilliSleep(50);
retryAttempt++;
continue;
}
ERR(err);
return -1;
}
pOp = (!pIdx) ? pTrans->getNdbScanOperation(pTab->getName()) :
pIOp=pTrans->getNdbIndexScanOperation(pIdx->getName(), pTab->getName());
if (pOp == NULL) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return -1;
}
int rs;
switch(_lock + (3 * order)){
case 1:
rs = pOp->readTuples(NdbScanOperation::LM_Read, 0, parallel);
break;
case 2:
rs = pOp->readTuples(NdbScanOperation::LM_Exclusive, 0, parallel);
break;
case 3:
rs = pIOp->readTuples(NdbScanOperation::LM_CommittedRead, 0, parallel,
true, descending);
break;
case 4:
rs = pIOp->readTuples(NdbScanOperation::LM_Read, 0, parallel, true, descending);
break;
case 5:
rs = pIOp->readTuples(NdbScanOperation::LM_Exclusive, 0, parallel, true, descending);
break;
case 0:
default:
rs = pOp->readTuples(NdbScanOperation::LM_CommittedRead, 0, parallel);
break;
}
if( rs != 0 ){
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return -1;
}
if(0){
NdbScanFilter sf(pOp);
#if 0
sf.begin(NdbScanFilter::AND);
sf.le(0, (Uint32)10);
sf.end();
#elif 0
sf.begin(NdbScanFilter::OR);
sf.begin(NdbScanFilter::AND);
sf.ge(0, (Uint32)10);
sf.lt(0, (Uint32)20);
sf.end();
sf.begin(NdbScanFilter::AND);
sf.ge(0, (Uint32)30);
sf.lt(0, (Uint32)40);
sf.end();
sf.end();
#elif 1
sf.begin(NdbScanFilter::AND);
sf.begin(NdbScanFilter::OR);
sf.begin(NdbScanFilter::AND);
sf.ge(0, (Uint32)10);
sf.lt(0, (Uint32)20);
sf.end();
sf.begin(NdbScanFilter::AND);
sf.ge(0, (Uint32)30);
sf.lt(0, (Uint32)40);
sf.end();
sf.end();
sf.begin(NdbScanFilter::OR);
sf.begin(NdbScanFilter::AND);
sf.ge(0, (Uint32)0);
sf.lt(0, (Uint32)50);
sf.end();
sf.begin(NdbScanFilter::AND);
sf.ge(0, (Uint32)100);
sf.lt(0, (Uint32)200);
sf.end();
sf.end();
sf.end();
#endif
} else {
check = pOp->interpret_exit_ok();
if( check == -1 ) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return -1;
}
}
for(int a = 0; a<pTab->getNoOfColumns(); a++){
if((row->attributeStore(a) =
pOp->getValue(pTab->getColumn(a)->getName())) == 0) {
ERR(pTrans->getNdbError());
pNdb->closeTransaction(pTrans);
return -1;
}
}
check = pTrans->execute(NdbTransaction::NoCommit);
if( check == -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 -1;
}
if (headers)
row->header(ndbout) << endl;
int eof;
int rows = 0;
eof = pOp->nextResult();
while(eof == 0){
rows++;
if (useHexFormat) {
ndbout.setHexFormat(1) << (*row) << endl;
} else {
ndbout << (*row) << endl;
}
eof = pOp->nextResult();
}
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 -1;
}
pNdb->closeTransaction(pTrans);
ndbout << rows << " rows returned" << endl;
return 0;
}
return -1;
}
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