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// record_store_test_repairiter.cpp
/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* 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. See the
* GNU Affero General Public License for more details.
*
* 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/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/db/storage/record_store_test_harness.h"
#include <boost/scoped_ptr.hpp>
#include "mongo/db/record_id.h"
#include "mongo/db/storage/record_data.h"
#include "mongo/db/storage/record_store.h"
#include "mongo/unittest/unittest.h"
using boost::scoped_ptr;
using std::set;
using std::string;
using std::stringstream;
namespace mongo {
// Create an iterator for repairing an empty record store.
TEST( RecordStoreTestHarness, GetIteratorForRepairEmpty ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<RecordStore> rs( harnessHelper->newNonCappedRecordStore() );
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( 0, rs->numRecords( opCtx.get() ) );
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
RecordIterator *it = rs->getIteratorForRepair( opCtx.get() );
// returns NULL if getIteratorForRepair is not supported
if (it == NULL) {
return;
}
ASSERT( it->isEOF() );
ASSERT_EQUALS( RecordId(), it->curr() );
ASSERT_EQUALS( RecordId(), it->getNext() );
ASSERT( it->isEOF() );
ASSERT_EQUALS( RecordId(), it->curr() );
delete it;
}
}
// Insert multiple records and create an iterator for repairing the record store,
// even though the it has not been corrupted.
TEST( RecordStoreTestHarness, GetIteratorForRepairNonEmpty ) {
scoped_ptr<HarnessHelper> harnessHelper( newHarnessHelper() );
scoped_ptr<RecordStore> rs( harnessHelper->newNonCappedRecordStore() );
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( 0, rs->numRecords( opCtx.get() ) );
}
const int nToInsert = 10;
RecordId locs[nToInsert];
for ( int i = 0; i < nToInsert; i++ ) {
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
{
stringstream ss;
ss << "record " << i;
string data = ss.str();
WriteUnitOfWork uow( opCtx.get() );
StatusWith<RecordId> res = rs->insertRecord( opCtx.get(),
data.c_str(),
data.size() + 1,
false );
ASSERT_OK( res.getStatus() );
locs[i] = res.getValue();
uow.commit();
}
}
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
ASSERT_EQUALS( nToInsert, rs->numRecords( opCtx.get() ) );
}
set<RecordId> remain( locs, locs + nToInsert );
{
scoped_ptr<OperationContext> opCtx( harnessHelper->newOperationContext() );
RecordIterator *it = rs->getIteratorForRepair( opCtx.get() );
// returns NULL if getIteratorForRepair is not supported
if (it == NULL) {
return;
}
while ( !it->isEOF() ) {
RecordId loc = it->getNext();
remain.erase( loc ); // can happen more than once per doc
}
ASSERT( remain.empty() );
ASSERT_EQUALS( RecordId(), it->curr() );
ASSERT_EQUALS( RecordId(), it->getNext() );
ASSERT( it->isEOF() );
ASSERT_EQUALS( RecordId(), it->curr() );
delete it;
}
}
// Insert a single record. Create a repair iterator pointing to that single record.
// Then invalidate the record and ensure that the repair iterator responds correctly.
// See SERVER-16300.
TEST(RecordStoreTestHarness, GetIteratorForRepairInvalidateSingleton) {
scoped_ptr<HarnessHelper> harnessHelper(newHarnessHelper());
scoped_ptr<RecordStore> rs(harnessHelper->newNonCappedRecordStore());
{
scoped_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
ASSERT_EQ(0, rs->numRecords(opCtx.get()));
}
// Insert one record.
RecordId idToInvalidate;
{
scoped_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
WriteUnitOfWork uow(opCtx.get());
StatusWith<RecordId> res = rs->insertRecord(opCtx.get(), "some data", 10, false);
ASSERT_OK(res.getStatus());
idToInvalidate = res.getValue();
uow.commit();
}
// Double-check that the record store has one record in it now.
{
scoped_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
ASSERT_EQ(1, rs->numRecords(opCtx.get()));
}
{
scoped_ptr<OperationContext> opCtx(harnessHelper->newOperationContext());
scoped_ptr<RecordIterator> it(rs->getIteratorForRepair(opCtx.get()));
// Return value of NULL is expected if getIteratorForRepair is not supported.
if (!it) {
return;
}
// We should be pointing at the only record in the store.
ASSERT_EQ(idToInvalidate, it->curr());
ASSERT(!it->isEOF());
// Invalidate the record we're pointing at.
it->saveState();
it->invalidate(idToInvalidate);
it->restoreState(opCtx.get());
// Iterator should be EOF now because the only thing in the collection got deleted.
ASSERT(it->isEOF());
ASSERT_EQ(it->getNext(), RecordId());
}
}
} // namespace mongo
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