void operator()(DBClientCursorBatchIterator &i) {
const string to_dbname = nsToDatabase(to_collection);
while (i.moreInCurrentBatch()) {
if (n % 128 == 127) {
time_t now = time(0);
if (now - lastLog >= 60) {
// report progress
if (lastLog) {
log() << "clone " << to_collection << ' ' << n << endl;
}
lastLog = now;
}
mayInterrupt(_mayBeInterrupted);
}
BSONObj js = i.nextSafe();
++n;
if (isindex) {
verify(strstr(from_collection, "system.indexes"));
storedForLater->push_back(fixindex(js, to_dbname).getOwned());
}
else {
try {
Client::ReadContext ctx(to_collection);
if (_isCapped) {
NamespaceDetails *d = nsdetails(to_collection);
verify(d->isCapped());
BSONObj pk = js["$_"].Obj();
BSONObjBuilder rowBuilder;
BSONObjIterator it(js);
while (it.moreWithEOO()) {
BSONElement e = it.next();
if (e.eoo()) {
break;
}
if (!mongoutils::str::equals(e.fieldName(), "$_")) {
rowBuilder.append(e);
}
}
BSONObj row = rowBuilder.obj();
d->insertObjectIntoCappedWithPK(pk, row, NamespaceDetails::NO_LOCKTREE);
}
else {
insertObject(to_collection, js, 0, logForRepl);
}
}
catch (UserException& e) {
error() << "error: exception cloning object in " << from_collection << ' ' << e.what() << " obj:" << js.toString() << '\n';
throw;
}
RARELY if ( time( 0 ) - saveLast > 60 ) {
log() << n << " objects cloned so far from collection " << from_collection << endl;
saveLast = time( 0 );
}
}
}
}
static void runCappedInsertFromOplogWithLock(
const char* ns,
BSONObj& pk,
BSONObj& row
)
{
NamespaceDetails *nsd = nsdetails(ns);
// overwrite set to true because we are running on a secondary
const uint64_t flags = (NamespaceDetails::NO_UNIQUE_CHECKS | NamespaceDetails::NO_LOCKTREE);
nsd->insertObjectIntoCappedWithPK(pk, row, flags);
nsd->notifyOfWriteOp();
}