void onDbVersionMismatch(OperationContext* opCtx,
const StringData dbName,
const DatabaseVersion& clientDbVersion,
const boost::optional<DatabaseVersion>& serverDbVersion) noexcept {
invariant(!opCtx->lockState()->isLocked());
invariant(!opCtx->getClient()->isInDirectClient());
auto const shardingState = ShardingState::get(opCtx);
invariant(shardingState->canAcceptShardedCommands());
if (serverDbVersion && serverDbVersion->getUuid() == clientDbVersion.getUuid() &&
serverDbVersion->getLastMod() >= clientDbVersion.getLastMod()) {
// The client was stale; do not trigger server-side refresh.
return;
}
try {
// TODO SERVER-33773 if the 'waitForMovePrimaryCriticalSection' flag is set on the
// OperationShardingState, wait for the movePrimary critical section to complete before
// attempting a refresh.
} catch (const DBException& ex) {
log() << "Failed to wait for movePrimary critical section to complete "
<< causedBy(redact(ex));
return;
}
try {
forceDatabaseRefresh(opCtx, dbName);
} catch (const DBException& ex) {
log() << "Failed to refresh databaseVersion for database " << dbName
<< causedBy(redact(ex));
}
}
bool isFixed(const DatabaseVersion& dbv) {
return dbv.getLastMod() == 0;
}
bool equal(const DatabaseVersion& dbv1, const DatabaseVersion& dbv2) {
return dbv1.getUuid() == dbv2.getUuid() && dbv1.getLastMod() == dbv2.getLastMod();
}
DatabaseVersion makeFixed() {
DatabaseVersion dbv;
dbv.setLastMod(0);
dbv.setUuid(UUID::gen());
return dbv;
}
DatabaseVersion makeIncremented(const DatabaseVersion& v) {
DatabaseVersion dbv;
dbv.setLastMod(v.getLastMod() + 1);
dbv.setUuid(v.getUuid());
return dbv;
}
DatabaseVersion makeNew() {
DatabaseVersion dbv;
dbv.setLastMod(1);
dbv.setUuid(UUID::gen());
return dbv;
}