MojErr MojDbSandwichEngine::open(const MojChar* path, MojDbEnv* env)
{
LOG_TRACE("Entering function %s", __FUNCTION__);
MojDbSandwichEnv* bEnv = static_cast<MojDbSandwichEnv *> (env);
MojAssert(bEnv);
MojAssert(!m_env.get() && !m_isOpen);
m_env.reset(bEnv);
if (path) {
MojErr err = m_path.assign(path);
MojErrCheck(err);
// create dir
err = MojCreateDirIfNotPresent(path);
MojErrCheck(err);
}
// TODO: consider moving to configure
m_db->options = MojDbSandwichEngine::getOpenOptions();
m_db->writeOptions = MojDbSandwichEngine::getWriteOptions();
m_db->readOptions = MojDbSandwichEngine::getReadOptions();
leveldb::Status status = m_db->Open(path);
if (status.IsCorruption()) { // database corrupted
// try restore database
// AHTUNG! After restore database can lost some data!
status = leveldb::RepairDB(path, MojDbSandwichEngine::getOpenOptions());
MojLdbErrCheck(status, _T("db corrupted"));
status = m_db->Open(path); // database restored, re-open
}
MojLdbErrCheck(status, _T("db_create/db_open"));
// open seqence db
m_seqDb.reset(new MojDbSandwichDatabase(m_db.use(MojEnvSeqDbName)));
MojAllocCheck(m_seqDb.get());
MojErr err = m_seqDb->open(MojEnvSeqDbName, this);
MojErrCheck(err);
// open index db
m_indexDb.reset(new MojDbSandwichDatabase(m_db.use(MojEnvIndexDbName)));
MojAllocCheck(m_indexDb.get());
err = m_indexDb->open(MojEnvIndexDbName, this);
MojErrCheck(err);
m_isOpen = true;
return MojErrNone;
}
MojErr MojDb::checkDbVersion(const MojChar* path)
{
MojAssert(path);
MojLogTrace(s_log);
MojString version;
MojString versionFileName;
MojErr err = versionFileName.format(_T("%s/%s"), path, VersionFileName);
MojErrCheck(err);
err = MojFileToString(versionFileName, version);
MojErrCatch(err, MojErrNotFound) {
// if the version file is not found, create it
// make sure the directory exists
err = MojCreateDirIfNotPresent(path);
MojErrCheck(err);
err = version.format(_T("%lld"), DatabaseVersion);
MojErrCheck(err);
err = MojFileFromString(versionFileName, version);
MojErrCheck(err);
} else {
