virtual bool run(OperationContext* txn,
const string& db,
BSONObj& cmdObj,
int,
string& errmsg,
BSONObjBuilder& result) {
const std::string nsToCompact = parseNsCollectionRequired(db, cmdObj);
repl::ReplicationCoordinator* replCoord = repl::getGlobalReplicationCoordinator();
if (replCoord->getMemberState().primary() && !cmdObj["force"].trueValue()) {
errmsg =
"will not run compact on an active replica set primary as this is a slow blocking "
"operation. use force:true to force";
return false;
}
NamespaceString nss(nsToCompact);
if (!nss.isNormal()) {
errmsg = "bad namespace name";
return false;
}
if (nss.isSystem()) {
// items in system.* cannot be moved as there might be pointers to them
// i.e. system.indexes entries are pointed to from NamespaceDetails
errmsg = "can't compact a system namespace";
return false;
}
CompactOptions compactOptions;
if (cmdObj["preservePadding"].trueValue()) {
compactOptions.paddingMode = CompactOptions::PRESERVE;
if (cmdObj.hasElement("paddingFactor") || cmdObj.hasElement("paddingBytes")) {
errmsg = "cannot mix preservePadding and paddingFactor|paddingBytes";
return false;
}
} else if (cmdObj.hasElement("paddingFactor") || cmdObj.hasElement("paddingBytes")) {
compactOptions.paddingMode = CompactOptions::MANUAL;
if (cmdObj.hasElement("paddingFactor")) {
compactOptions.paddingFactor = cmdObj["paddingFactor"].Number();
if (compactOptions.paddingFactor < 1 || compactOptions.paddingFactor > 4) {
errmsg = "invalid padding factor";
return false;
}
}
if (cmdObj.hasElement("paddingBytes")) {
compactOptions.paddingBytes = cmdObj["paddingBytes"].numberInt();
if (compactOptions.paddingBytes < 0 ||
compactOptions.paddingBytes > (1024 * 1024)) {
errmsg = "invalid padding bytes";
return false;
}
}
}
if (cmdObj.hasElement("validate"))
compactOptions.validateDocuments = cmdObj["validate"].trueValue();
ScopedTransaction transaction(txn, MODE_IX);
AutoGetDb autoDb(txn, db, MODE_X);
Database* const collDB = autoDb.getDb();
Collection* collection = collDB ? collDB->getCollection(nss) : NULL;
// If db/collection does not exist, short circuit and return.
if (!collDB || !collection) {
errmsg = "namespace does not exist";
return false;
}
OldClientContext ctx(txn, nss.ns());
BackgroundOperation::assertNoBgOpInProgForNs(nss.ns());
log() << "compact " << nss.ns() << " begin, options: " << compactOptions.toString();
StatusWith<CompactStats> status = collection->compact(txn, &compactOptions);
if (!status.isOK())
return appendCommandStatus(result, status.getStatus());
if (status.getValue().corruptDocuments > 0)
result.append("invalidObjects", status.getValue().corruptDocuments);
log() << "compact " << nss.ns() << " end";
return true;
}
virtual bool run(const string& db, BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
string coll = cmdObj.firstElement().valuestr();
if( coll.empty() || db.empty() ) {
errmsg = "no collection name specified";
return false;
}
if( isCurrentlyAReplSetPrimary() && !cmdObj["force"].trueValue() ) {
errmsg = "will not run compact on an active replica set primary as this is a slow blocking operation. use force:true to force";
return false;
}
NamespaceString ns(db,coll);
if ( !ns.isNormal() ) {
errmsg = "bad namespace name";
return false;
}
if ( ns.isSystem() ) {
// items in system.* cannot be moved as there might be pointers to them
// i.e. system.indexes entries are pointed to from NamespaceDetails
errmsg = "can't compact a system namespace";
return false;
}
CompactOptions compactOptions;
if ( cmdObj["preservePadding"].trueValue() ) {
compactOptions.paddingMode = CompactOptions::PRESERVE;
if ( cmdObj.hasElement( "paddingFactor" ) ||
cmdObj.hasElement( "paddingBytes" ) ) {
errmsg = "cannot mix preservePadding and paddingFactor|paddingBytes";
return false;
}
}
else if ( cmdObj.hasElement( "paddingFactor" ) || cmdObj.hasElement( "paddingBytes" ) ) {
compactOptions.paddingMode = CompactOptions::MANUAL;
if ( cmdObj.hasElement("paddingFactor") ) {
compactOptions.paddingFactor = cmdObj["paddingFactor"].Number();
if ( compactOptions.paddingFactor < 1 ||
compactOptions.paddingFactor > 4 ){
errmsg = "invalid padding factor";
return false;
}
}
if ( cmdObj.hasElement("paddingBytes") ) {
compactOptions.paddingBytes = cmdObj["paddingBytes"].numberInt();
if ( compactOptions.paddingBytes < 0 ||
compactOptions.paddingBytes > ( 1024 * 1024 ) ) {
errmsg = "invalid padding bytes";
return false;
}
}
}
if ( cmdObj.hasElement("validate") )
compactOptions.validateDocuments = cmdObj["validate"].trueValue();
Lock::DBWrite lk(ns.ns());
BackgroundOperation::assertNoBgOpInProgForNs(ns.ns());
Client::Context ctx(ns);
Collection* collection = ctx.db()->getCollection(ns.ns());
if( ! collection ) {
errmsg = "namespace does not exist";
return false;
}
if ( collection->isCapped() ) {
errmsg = "cannot compact a capped collection";
return false;
}
log() << "compact " << ns << " begin, options: " << compactOptions.toString();
std::vector<BSONObj> indexesInProg = stopIndexBuilds(db, cmdObj);
StatusWith<CompactStats> status = collection->compact( &compactOptions );
if ( !status.isOK() )
return appendCommandStatus( result, status.getStatus() );
if ( status.getValue().corruptDocuments > 0 )
result.append("invalidObjects", status.getValue().corruptDocuments );
log() << "compact " << ns << " end";
IndexBuilder::restoreIndexes(indexesInProg);
return true;
}
