bool _run(OperationContext* txn, const string& , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
if( cmdObj["replSetReconfig"].type() != Object ) {
errmsg = "no configuration specified";
return false;
}
ReplicationCoordinator::ReplSetReconfigArgs parsedArgs;
parsedArgs.newConfigObj = cmdObj["replSetReconfig"].Obj();
parsedArgs.force = cmdObj.hasField("force") && cmdObj["force"].trueValue();
Status status = getGlobalReplicationCoordinator()->processReplSetReconfig(txn,
parsedArgs,
&result);
return appendCommandStatus(result, status);
}
Status checkAuthForApplyOpsCommand(OperationContext* txn,
const std::string& dbname,
const BSONObj& cmdObj) {
AuthorizationSession* authSession = AuthorizationSession::get(txn->getClient());
ApplyOpsValidity validity = validateApplyOpsCommand(cmdObj);
if (validity == ApplyOpsValidity::kNeedsSuperuser) {
std::vector<Privilege> universalPrivileges;
RoleGraph::generateUniversalPrivileges(&universalPrivileges);
if (!authSession->isAuthorizedForPrivileges(universalPrivileges)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
fassert(40314, validity == ApplyOpsValidity::kOk);
boost::optional<DisableDocumentValidation> maybeDisableValidation;
if (shouldBypassDocumentValidationForCommand(cmdObj))
maybeDisableValidation.emplace(txn);
const bool alwaysUpsert =
cmdObj.hasField("alwaysUpsert") ? cmdObj["alwaysUpsert"].trueValue() : true;
checkBSONType(BSONType::Array, cmdObj.firstElement());
for (const BSONElement& e : cmdObj.firstElement().Array()) {
checkBSONType(BSONType::Object, e);
Status status = checkOperationAuthorization(txn, dbname, e.Obj(), alwaysUpsert);
if (!status.isOK()) {
return status;
}
}
BSONElement preconditions = cmdObj["preCondition"];
if (!preconditions.eoo()) {
for (const BSONElement& precondition : preconditions.Array()) {
checkBSONType(BSONType::Object, precondition);
BSONElement nsElem = precondition.Obj()["ns"];
checkBSONType(BSONType::String, nsElem);
NamespaceString nss(nsElem.checkAndGetStringData());
if (!authSession->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(nss), ActionType::find)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized to check precondition");
}
}
}
return Status::OK();
}
StatusWith<std::vector<BSONElement>> DatabasesCloner::_parseListDatabasesResponse(
BSONObj dbResponse) {
if (!dbResponse.hasField("databases")) {
return Status(ErrorCodes::BadValue,
"The 'listDatabases' response does not contain a 'databases' field.");
}
BSONElement response = dbResponse["databases"];
try {
return response.Array();
} catch (const AssertionException&) {
return Status(ErrorCodes::BadValue,
"The 'listDatabases' response is unable to be transformed into an array.");
}
}
bool run(
const string& db,
BSONObj& cmdObj,
int options, string& errmsg,
BSONObjBuilder& result,
bool fromRepl = false )
{
if (cmdObj.hasField("reset")) {
ReplSetConfig::OPLOG_VERSION = ReplSetConfig::OPLOG_VERSION_CURRENT;
}
else {
ReplSetConfig::OPLOG_VERSION = ReplSetConfig::OPLOG_VERSION_TEST;
}
return true;
}
StatusWith<std::vector<BSONElement>> CollectionCloner::_parseParallelCollectionScanResponse(
BSONObj resp) {
if (!resp.hasField("cursors")) {
return Status(ErrorCodes::CursorNotFound,
"The 'parallelCollectionScan' response does not contain a 'cursors' field.");
}
BSONElement response = resp["cursors"];
if (response.type() == BSONType::Array) {
return response.Array();
} else {
return Status(
ErrorCodes::FailedToParse,
"The 'parallelCollectionScan' response is unable to be transformed into an array.");
}
}
virtual bool run(OperationContext* txn, const string& , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
if( !check(errmsg, result) )
return false;
bool force = cmdObj.hasField("force") && cmdObj["force"].trueValue();
int secs = (int) cmdObj.firstElement().numberInt();
if( secs == 0 )
secs = 60;
Status status = getGlobalReplicationCoordinator()->stepDown(
force,
ReplicationCoordinator::Milliseconds(0),
ReplicationCoordinator::Milliseconds(secs * 1000));
return appendCommandStatus(result, status);
}
int CMongodbModel::GetIntFieldValue(BSONObj boRecord, string strFieldName,
int iExceptionValue)
{
int iValue = iExceptionValue;
if (boRecord.hasField(strFieldName))
{
try
{
iValue = boRecord.getIntField(strFieldName.c_str());
}
catch(exception& ex) {}
}
return iValue;
}
Status V1UserDocumentParser::initializeUserCredentialsFromUserDocument(
User* user, const BSONObj& privDoc) const {
User::CredentialData credentials;
if (privDoc.hasField(AuthorizationManager::PASSWORD_FIELD_NAME)) {
credentials.password = privDoc[AuthorizationManager::PASSWORD_FIELD_NAME].String();
credentials.isExternal = false;
}
else if (privDoc.hasField(AuthorizationManager::V1_USER_SOURCE_FIELD_NAME)) {
std::string userSource = privDoc[AuthorizationManager::V1_USER_SOURCE_FIELD_NAME].String();
if (userSource != "$external") {
return Status(ErrorCodes::UnsupportedFormat,
"Cannot extract credentials from user documents without a password "
"and with userSource != \"$external\"");
} else {
credentials.isExternal = true;
}
} else {
return Status(ErrorCodes::UnsupportedFormat,
"Invalid user document: must have one of \"pwd\" and \"userSource\"");
}
user->setCredentials(credentials);
return Status::OK();
}
Status AuthzManagerExternalStateMock::updateOne(OperationContext* txn,
const NamespaceString& collectionName,
const BSONObj& query,
const BSONObj& updatePattern,
bool upsert,
const BSONObj& writeConcern) {
namespace mmb = mutablebson;
UpdateDriver::Options updateOptions;
UpdateDriver driver(updateOptions);
Status status = driver.parse(updatePattern);
if (!status.isOK())
return status;
BSONObjCollection::iterator iter;
status = _findOneIter(collectionName, query, &iter);
mmb::Document document;
if (status.isOK()) {
document.reset(*iter, mmb::Document::kInPlaceDisabled);
BSONObj logObj;
status = driver.update(StringData(), &document, &logObj);
if (!status.isOK())
return status;
BSONObj newObj = document.getObject().copy();
*iter = newObj;
BSONObj idQuery = driver.makeOplogEntryQuery(newObj, false);
if (_authzManager) {
_authzManager->logOp(txn, "u", collectionName.ns().c_str(), logObj, &idQuery);
}
return Status::OK();
} else if (status == ErrorCodes::NoMatchingDocument && upsert) {
if (query.hasField("_id")) {
document.root().appendElement(query["_id"]);
}
status = driver.populateDocumentWithQueryFields(query, NULL, document);
if (!status.isOK()) {
return status;
}
status = driver.update(StringData(), &document);
if (!status.isOK()) {
return status;
}
return insert(txn, collectionName, document.getObject(), writeConcern);
} else {
return status;
}
}
bool run(
const string& db,
BSONObj& cmdObj,
int options, string& errmsg,
BSONObjBuilder& result,
bool fromRepl = false )
{
if (cmdObj.hasField("keepOplogAlive")) {
uint64_t val = cmdObj["keepOplogAlive"].numberLong();
if (theReplSet) {
theReplSet->setKeepOplogAlivePeriod(val);
}
}
return true;
}
Status AuthorizationManager::buildPrivilegeSet(const std::string& dbname,
const PrincipalName& principal,
const BSONObj& privilegeDocument,
PrivilegeSet* result) {
if (!privilegeDocument.hasField(ROLES_FIELD_NAME)) {
// Old-style (v2.2 and prior) privilege document
return _buildPrivilegeSetFromOldStylePrivilegeDocument(dbname,
principal,
privilegeDocument,
result);
}
else {
return _buildPrivilegeSetFromExtendedPrivilegeDocument(
dbname, principal, privilegeDocument, result);
}
}
/* ****************************************************************************
*
* setCount -
*/
static void setCount(long long inc, const BSONObj& subOrig, BSONObjBuilder* b)
{
if (subOrig.hasField(CSUB_COUNT))
{
long long count = getIntOrLongFieldAsLongF(subOrig, CSUB_COUNT);
setCount(count + inc, b);
}
else
{
// In this case we only add if inc is different from 0
if (inc > 0)
{
setCount(inc, b);
}
}
}
Status LiteParsedQuery::init(const string& ns, int ntoskip, int ntoreturn, int queryOptions,
const BSONObj& queryObj, const BSONObj& proj,
bool fromQueryMessage) {
_ns = ns;
_ntoskip = ntoskip;
_ntoreturn = ntoreturn;
_options = queryOptions;
_proj = proj.getOwned();
if (_ntoskip < 0) {
return Status(ErrorCodes::BadValue, "bad skip value in query");
}
if (_ntoreturn < 0) {
// _ntoreturn greater than zero is simply a hint on how many objects to send back per
// "cursor batch". A negative number indicates a hard limit.
_wantMore = false;
_ntoreturn = -_ntoreturn;
}
if (fromQueryMessage) {
BSONElement queryField = queryObj["query"];
if (!queryField.isABSONObj()) { queryField = queryObj["$query"]; }
if (queryField.isABSONObj()) {
_filter = queryField.embeddedObject().getOwned();
Status status = initFullQuery(queryObj);
if (!status.isOK()) { return status; }
}
else {
// TODO: Does this ever happen?
_filter = queryObj.getOwned();
}
}
else {
// This is the debugging code path.
_filter = queryObj.getOwned();
}
_hasReadPref = queryObj.hasField("$readPreference");
if (!isValidSortOrder(_sort)) {
return Status(ErrorCodes::BadValue, "bad sort specification");
}
_sort = normalizeSortOrder(_sort);
return Status::OK();
}
void createCollectionWithOptions(BSONObj obj) {
BSONObjIterator i(obj);
// Rebuild obj as a command object for the "create" command.
// - {create: <name>} comes first, where <name> is the new name for the collection
// - elements with type Undefined get skipped over
BSONObjBuilder bo;
bo.append("create", _curcoll);
while (i.more()) {
BSONElement e = i.next();
if (strcmp(e.fieldName(), "create") == 0) {
continue;
}
if (e.type() == Undefined) {
log() << _curns << ": skipping undefined field: " << e.fieldName() << endl;
continue;
}
bo.append(e);
}
obj = bo.obj();
BSONObj fields = BSON("options" << 1);
scoped_ptr<DBClientCursor> cursor(conn().query(_curdb + ".system.namespaces", Query(BSON("name" << _curns)), 0, 0, &fields));
bool createColl = true;
if (cursor->more()) {
createColl = false;
BSONObj nsObj = cursor->next();
if (!nsObj.hasField("options") || !optionsSame(obj, nsObj["options"].Obj())) {
log() << "WARNING: collection " << _curns << " exists with different options than are in the metadata.json file and not using --drop. Options in the metadata file will be ignored." << endl;
}
}
if (!createColl) {
return;
}
BSONObj info;
if (!conn().runCommand(_curdb, obj, info)) {
uasserted(15936, "Creating collection " + _curns + " failed. Errmsg: " + info["errmsg"].String());
} else {
log() << "\tCreated collection " << _curns << " with options: " << obj.jsonString() << endl;
}
}
/* ****************************************************************************
*
* setSubject -
*/
static void setSubject(Subscription* s, const BSONObj& r)
{
// Entities
std::vector<BSONElement> ents = getField(r, CSUB_ENTITIES).Array();
for (unsigned int ix = 0; ix < ents.size(); ++ix)
{
BSONObj ent = ents[ix].embeddedObject();
std::string id = getStringField(ent, CSUB_ENTITY_ID);
std::string type = ent.hasField(CSUB_ENTITY_TYPE)? getStringField(ent, CSUB_ENTITY_TYPE) : "";
std::string isPattern = getStringField(ent, CSUB_ENTITY_ISPATTERN);
EntID en;
if (isFalse(isPattern))
{
en.id = id;
}
else
{
en.idPattern = id;
}
en.type = type;
s->subject.entities.push_back(en);
}
// Condition
std::vector<BSONElement> conds = getField(r, CSUB_CONDITIONS).Array();
for (unsigned int ix = 0; ix < conds.size(); ++ix)
{
BSONObj cond = conds[ix].embeddedObject();
// The ONCHANGE check is needed, as a subscription could mix different conditions types in DB
if (std::string(getStringField(cond, CSUB_CONDITIONS_TYPE)) == "ONCHANGE")
{
std::vector<BSONElement> condValues = getField(cond, CSUB_CONDITIONS_VALUE).Array();
for (unsigned int jx = 0; jx < condValues.size(); ++jx)
{
std::string attr = condValues[jx].String();
s->subject.condition.attributes.push_back(attr);
}
}
}
// Note that current DB model is based on NGSIv1 and doesn't consider expressions. Thus
// subject.condition.expression cannot be filled. The implemetion will be enhanced once
// the DB model gets defined
// TBD
}
/* ****************************************************************************
*
* setDescription -
*/
static void setDescription(const SubscriptionUpdate& subUp, const BSONObj& subOrig, BSONObjBuilder* b)
{
if (subUp.descriptionProvided)
{
setDescription(subUp, b);
}
else
{
if (subOrig.hasField(CSUB_DESCRIPTION))
{
std::string description = getStringFieldF(subOrig, CSUB_DESCRIPTION);
b->append(CSUB_DESCRIPTION, description);
LM_T(LmtMongo, ("Subscription description: %s", description.c_str()));
}
}
}
Value DocumentSourceCursor::serialize(bool explain) const {
// we never parse a documentSourceCursor, so we only serialize for explain
if (!explain)
return Value();
// Get planner-level explain info from the underlying PlanExecutor.
BSONObjBuilder explainBuilder;
Status explainStatus(ErrorCodes::InternalError, "");
{
const NamespaceString nss(_ns);
AutoGetCollectionForRead autoColl(pExpCtx->opCtx, nss);
massert(17392, "No _exec. Were we disposed before explained?", _exec);
_exec->restoreState(pExpCtx->opCtx);
explainStatus = Explain::explainStages(pExpCtx->opCtx,
_exec.get(),
ExplainCommon::QUERY_PLANNER,
&explainBuilder);
_exec->saveState();
}
MutableDocument out;
out["query"] = Value(_query);
if (!_sort.isEmpty())
out["sort"] = Value(_sort);
if (_limit)
out["limit"] = Value(_limit->getLimit());
if (!_projection.isEmpty())
out["fields"] = Value(_projection);
// Add explain results from the query system into the agg explain output.
if (explainStatus.isOK()) {
BSONObj explainObj = explainBuilder.obj();
invariant(explainObj.hasField("queryPlanner"));
out["queryPlanner"] = Value(explainObj["queryPlanner"]);
}
else {
out["planError"] = Value(explainStatus.toString());
}
return Value(DOC(getSourceName() << out.freezeToValue()));
}
/* ****************************************************************************
*
* setThrottling -
*/
static void setThrottling(const SubscriptionUpdate& subUp, const BSONObj& subOrig, BSONObjBuilder* b)
{
if (subUp.throttlingProvided)
{
setThrottling(subUp, b);
}
else
{
if (subOrig.hasField(CSUB_THROTTLING))
{
long long throttling = getIntOrLongFieldAsLongF(subOrig, CSUB_THROTTLING);
b->append(CSUB_THROTTLING, throttling);
LM_T(LmtMongo, ("Subscription throttling: %lu", throttling));
}
}
}
/* ****************************************************************************
*
* setStatus -
*/
static void setStatus(const SubscriptionUpdate& subUp, const BSONObj& subOrig, BSONObjBuilder* b)
{
if (subUp.statusProvided)
{
setStatus(subUp, b);
}
else
{
if (subOrig.hasField(CSUB_STATUS))
{
std::string status = getStringFieldF(subOrig, CSUB_STATUS);
b->append(CSUB_STATUS, status);
LM_T(LmtMongo, ("Subscription status: %s", status.c_str()));
}
}
}
/* ****************************************************************************
*
* setExpiration -
*/
static void setExpiration(const SubscriptionUpdate& subUp, const BSONObj& subOrig, BSONObjBuilder* b)
{
if (subUp.expiresProvided)
{
setExpiration(subUp, b);
}
else
{
if (subOrig.hasField(CSUB_EXPIRATION))
{
int64_t expires = getIntOrLongFieldAsLongF(subOrig, CSUB_EXPIRATION);
b->append(CSUB_EXPIRATION, (long long) expires);
LM_T(LmtMongo, ("Subscription expiration: %lu", expires));
}
}
}
Status ShardingEgressMetadataHook::_advanceConfigOptimeFromShard(ShardId shardId,
const BSONObj& metadataObj) {
try {
auto shard = grid.shardRegistry()->getShardNoReload(shardId);
if (!shard) {
return Status::OK();
}
// Update our notion of the config server opTime from the configOpTime in the response.
if (shard->isConfig()) {
// Config servers return the config opTime as part of their own metadata.
if (metadataObj.hasField(rpc::kReplSetMetadataFieldName)) {
auto parseStatus = rpc::ReplSetMetadata::readFromMetadata(metadataObj);
if (!parseStatus.isOK()) {
return parseStatus.getStatus();
}
// Use the last committed optime to advance config optime.
// For successful majority writes, we could use the optime of the last op
// from us and lastOpCommitted is always greater than or equal to it.
// On majority write failures, the last visible optime would be incorrect
// due to rollback as explained in SERVER-24630 and the last committed optime
// is safe to use.
const auto& replMetadata = parseStatus.getValue();
auto opTime = replMetadata.getLastOpCommitted();
grid.advanceConfigOpTime(opTime);
}
} else {
// Regular shards return the config opTime as part of ConfigServerMetadata.
auto parseStatus = rpc::ConfigServerMetadata::readFromMetadata(metadataObj);
if (!parseStatus.isOK()) {
return parseStatus.getStatus();
}
const auto& configMetadata = parseStatus.getValue();
auto opTime = configMetadata.getOpTime();
if (opTime.is_initialized()) {
grid.advanceConfigOpTime(opTime.get());
}
}
return Status::OK();
} catch (...) {
return exceptionToStatus();
}
}
BSONObj ShardedCursor::concatQuery( const BSONObj& query , const BSONObj& extraFilter ){
if ( ! query.hasField( "query" ) )
return _concatFilter( query , extraFilter );
BSONObjBuilder b;
BSONObjIterator i( query );
while ( i.more() ){
BSONElement e = i.next();
if ( strcmp( e.fieldName() , "query" ) ){
b.append( e );
continue;
}
b.append( "query" , _concatFilter( e.embeddedObjectUserCheck() , extraFilter ) );
}
return b.obj();
}
void WriteResult::_createWriteError(const BSONObj& error, const std::vector<WriteOperation*>& ops) {
int batchIndex = _getIntOrDefault(error, "index");
int code = _getIntOrDefault(error, "code", kUnknownError);
BSONObjBuilder bob;
bob.append("index", static_cast<long long>(ops[batchIndex]->getBulkIndex()));
bob.append("code", code);
bob.append("errmsg", error.getStringField("errmsg"));
BSONObjBuilder builder;
ops[batchIndex]->appendSelfToBSONObj(&builder);
bob.append("op", builder.obj());
if (error.hasField("errInfo"))
bob.append("details", error.getObjectField("errInfo"));
_writeErrors.push_back(bob.obj());
}
Status AuthorizationManager::buildPrivilegeSet(const std::string& dbname,
const PrincipalName& principal,
const BSONObj& privilegeDocument,
PrivilegeSet* result) {
if (!privilegeDocument.hasField("privileges")) {
// Old-style (v2.2 and prior) privilege document
return _buildPrivilegeSetFromOldStylePrivilegeDocument(dbname,
principal,
privilegeDocument,
result);
}
else {
return Status(ErrorCodes::UnsupportedFormat,
mongoutils::str::stream() << "Invalid privilege document received when "
"trying to extract privileges: " << privilegeDocument,
0);
}
}
Status AuthzManagerExternalStateMock::updateOne(
const NamespaceString& collectionName,
const BSONObj& query,
const BSONObj& updatePattern,
bool upsert,
const BSONObj& writeConcern) {
namespace mmb = mutablebson;
UpdateDriver::Options updateOptions;
updateOptions.upsert = upsert;
UpdateDriver driver(updateOptions);
Status status = driver.parse(updatePattern);
if (!status.isOK())
return status;
BSONObjCollection::iterator iter;
status = _findOneIter(collectionName, query, &iter);
mmb::Document document;
if (status.isOK()) {
document.reset(*iter, mmb::Document::kInPlaceDisabled);
status = driver.update(StringData(), &document, NULL);
if (!status.isOK())
return status;
*iter = document.getObject().copy();
return Status::OK();
}
else if (status == ErrorCodes::NoMatchingDocument && upsert) {
if (query.hasField("_id")) {
document.root().appendElement(query["_id"]);
}
status = driver.createFromQuery(query, document);
if (!status.isOK()) {
return status;
}
status = driver.update(StringData(), &document, NULL);
if (!status.isOK()) {
return status;
}
return insert(collectionName, document.getObject(), writeConcern);
}
else {
return status;
}
}
BSONObj CMongodbModel::ConvertBSONObj(BSONObj boRecord, map<string, string> mapField)
{
BSONObjBuilder bobCenRecord;
map<string, string>::iterator mit;
int iFieldType;
try{
for (mit = mapField.begin(); mit != mapField.end(); mit++)
{
if (boRecord.hasField(mit->second)){
iFieldType = boRecord[mit->second].type();
switch (iFieldType)
{
case BSON_STRING_TYPE:
bobCenRecord.append(mit->first, boRecord.getStringField(mit->second.c_str()));
break;
case BSON_INT_TYPE:
bobCenRecord.append(mit->first, boRecord[mit->second]._numberInt());
break;
case BSON_TIMESTAMP_TYPE:
bobCenRecord.append(mit->first, boRecord[mit->second]._numberLong());
break;
case BSON_LONG_LONG_TYPE:
bobCenRecord.append(mit->first, boRecord[mit->second]._numberLong());
break;
default:
bobCenRecord.append(mit->first, boRecord[mit->second].toString(false));
}
}
else{
bobCenRecord.append(mit->first, "");
}
}
}
catch (exception &ex)
{
stringstream strErrorMess;
string strLog;
strErrorMess << ex.what() << "][" << __FILE__ << "|" << __LINE__;
strLog = CUtilities::FormatLog(ERROR_MSG, "CMongodbModel", "ConvertBSONObj", "exception:" + strErrorMess.str());
CUtilities::WriteErrorLog(ERROR_MSG, strLog);
}
return bobCenRecord.obj();
}
/* CmdObj has the form {"hash" : <thingToHash>}
* or {"hash" : <thingToHash>, "seed" : <number> }
* Result has the form
* {"key" : <thingTohash>, "seed" : <int>, "out": NumberLong(<hash>)}
*
* Example use in the shell:
*> db.runCommand({hash: "hashthis", seed: 1})
*> {"key" : "hashthis",
*> "seed" : 1,
*> "out" : NumberLong(6271151123721111923),
*> "ok" : 1 }
**/
bool run(OperationContext* txn, const string& db,
BSONObj& cmdObj,
int options, string& errmsg,
BSONObjBuilder& result){
result.appendAs(cmdObj.firstElement(),"key");
int seed = 0;
if (cmdObj.hasField("seed")){
if (! cmdObj["seed"].isNumber()) {
errmsg += "seed must be a number";
return false;
}
seed = cmdObj["seed"].numberInt();
}
result.append( "seed" , seed );
result.append( "out" , BSONElementHasher::hash64( cmdObj.firstElement() , seed ) );
return true;
}
Status ServerSelectionMetadata::upconvert(const BSONObj& legacyCommand,
const int legacyQueryFlags,
BSONObjBuilder* commandBob,
BSONObjBuilder* metadataBob) {
// The secondaryOK option is equivalent to the slaveOk bit being set on legacy commands.
if (legacyQueryFlags & QueryOption_SlaveOk) {
metadataBob->append(kSecondaryOkFieldName, 1);
}
// First we need to check if we have a wrapped command. That is, a command of the form
// {'$query': { 'commandName': 1, ...}, '$someOption': 5, ....}. Curiously, the field name
// of the wrapped query can be either '$query', or 'query'.
auto swUnwrapped = unwrapCommand(legacyCommand);
if (!swUnwrapped.isOK()) {
return swUnwrapped.getStatus();
}
BSONObj maybeUnwrapped;
bool wasWrapped;
std::tie(wasWrapped, maybeUnwrapped) = swUnwrapped.getValue();
if (wasWrapped) {
// Check if legacyCommand has an invalid $maxTimeMS option.
// TODO: Move this check elsewhere when we handle upconverting/downconverting maxTimeMS.
if (legacyCommand.hasField("$maxTimeMS")) {
return Status(ErrorCodes::InvalidOptions,
"cannot use $maxTimeMS query option with "
"commands; use maxTimeMS command option "
"instead");
}
// If the command was wrapped, we can write out the upconverted command now, as there
// is nothing else we need to remove from it.
commandBob->appendElements(maybeUnwrapped);
return extractWrappedReadPreference(legacyCommand, metadataBob);
}
// If the command was not wrapped, we need to check for a readPreference sent by mongos
// on the $queryOptions field of the command. If it is set, we remove it from the
// upconverted command, so we need to pass the command builder along.
return extractUnwrappedReadPreference(maybeUnwrapped, commandBob, metadataBob);
}
// Compares 2 BSONObj representing collection options. Returns true if the objects
// represent different options. Ignores the "create" field.
bool optionsSame(BSONObj obj1, BSONObj obj2) {
int nfields = 0;
BSONObjIterator i(obj1);
while ( i.more() ) {
BSONElement e = i.next();
if (!obj2.hasField(e.fieldName())) {
if (strcmp(e.fieldName(), "create") == 0) {
continue;
} else {
return false;
}
}
nfields++;
if (e != obj2[e.fieldName()]) {
return false;
}
}
return nfields == obj2.nFields();
}
void _delete( Request& r , DbMessage& d, ChunkManagerPtr manager ){
int flags = d.pullInt();
bool justOne = flags & 1;
uassert( 10203 , "bad delete message" , d.moreJSObjs() );
BSONObj pattern = d.nextJsObj();
set<Shard> shards;
int left = 5;
while ( true ){
try {
manager->getShardsForQuery( shards , pattern );
log(2) << "delete : " << pattern << " \t " << shards.size() << " justOne: " << justOne << endl;
if ( shards.size() == 1 ){
doWrite( dbDelete , r , *shards.begin() );
return;
}
break;
}
catch ( StaleConfigException& e ){
if ( left <= 0 )
throw e;
left--;
log() << "delete failed b/c of StaleConfigException, retrying "
<< " left:" << left << " ns: " << r.getns() << " patt: " << pattern << endl;
r.reset( false );
shards.clear();
manager = r.getChunkManager();
}
}
if ( justOne && ! pattern.hasField( "_id" ) )
throw UserException( 8015 , "can only delete with a non-shard key pattern if can delete as many as we find" );
for ( set<Shard>::iterator i=shards.begin(); i!=shards.end(); i++){
int * x = (int*)(r.d().afterNS());
x[0] |= RemoveOption_Broadcast;
doWrite( dbDelete , r , *i , false );
}
}