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// test_commands.cpp
/**
* Copyright (C) 2013 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/base/init.h"
#include "mongo/base/initializer_context.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/index_builder.h"
#include "mongo/db/kill_current_op.h"
#include "mongo/db/query/internal_plans.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/operation_context_impl.h"
namespace mongo {
/* For testing only, not for general use. Enabled via command-line */
class GodInsert : public Command {
public:
GodInsert() : Command( "godinsert" ) { }
virtual bool adminOnly() const { return false; }
virtual bool slaveOk() const { return true; }
virtual bool isWriteCommandForConfigServer() const { return false; }
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {}
virtual void help( stringstream &help ) const {
help << "internal. for testing only.";
}
virtual bool run(OperationContext* txn, const string& dbname, BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool) {
string coll = cmdObj[ "godinsert" ].valuestrsafe();
log() << "test only command godinsert invoked coll:" << coll << endl;
uassert( 13049, "godinsert must specify a collection", !coll.empty() );
string ns = dbname + "." + coll;
BSONObj obj = cmdObj[ "obj" ].embeddedObjectUserCheck();
Lock::DBWrite lk(txn->lockState(), ns);
Client::Context ctx( ns );
Database* db = ctx.db();
Collection* collection = db->getCollection( txn, ns );
if ( !collection ) {
collection = db->createCollection( txn, ns );
if ( !collection ) {
errmsg = "could not create collection";
return false;
}
}
StatusWith<DiskLoc> res = collection->insertDocument( txn, obj, false );
return appendCommandStatus( result, res.getStatus() );
}
};
/* for diagnostic / testing purposes. Enabled via command line. */
class CmdSleep : public Command {
public:
virtual bool isWriteCommandForConfigServer() const { return false; }
virtual bool adminOnly() const { return true; }
virtual bool slaveOk() const { return true; }
virtual void help( stringstream& help ) const {
help << "internal testing command. Makes db block (in a read lock) for 100 seconds\n";
help << "w:true write lock. secs:<seconds>";
}
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {}
CmdSleep() : Command("sleep") { }
bool run(OperationContext* txn, const string& ns, BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
log() << "test only command sleep invoked" << endl;
long long millis = 10 * 1000;
if (cmdObj["secs"].isNumber() && cmdObj["millis"].isNumber()) {
millis = cmdObj["secs"].numberLong() * 1000 + cmdObj["millis"].numberLong();
}
else if (cmdObj["secs"].isNumber()) {
millis = cmdObj["secs"].numberLong() * 1000;
}
else if (cmdObj["millis"].isNumber()) {
millis = cmdObj["millis"].numberLong();
}
if(cmdObj.getBoolField("w")) {
Lock::GlobalWrite lk(txn->lockState());
sleepmillis(millis);
}
else {
Lock::GlobalRead lk(txn->lockState());
sleepmillis(millis);
}
// Interrupt point for testing (e.g. maxTimeMS).
txn->checkForInterrupt();
return true;
}
};
// Testing only, enabled via command-line.
class CapTrunc : public Command {
public:
CapTrunc() : Command( "captrunc" ) {}
virtual bool slaveOk() const { return false; }
virtual bool isWriteCommandForConfigServer() const { return false; }
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {}
virtual bool run(OperationContext* txn, const string& dbname , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool) {
string coll = cmdObj[ "captrunc" ].valuestrsafe();
uassert( 13416, "captrunc must specify a collection", !coll.empty() );
NamespaceString nss( dbname, coll );
int n = cmdObj.getIntField( "n" );
bool inc = cmdObj.getBoolField( "inc" ); // inclusive range?
Client::WriteContext ctx(txn, nss.ns() );
Collection* collection = ctx.ctx().db()->getCollection( txn, nss.ns() );
massert( 13417, "captrunc collection not found or empty", collection);
boost::scoped_ptr<Runner> runner(InternalPlanner::collectionScan(nss.ns(),
collection,
InternalPlanner::BACKWARD));
DiskLoc end;
// We remove 'n' elements so the start is one past that
for( int i = 0; i < n + 1; ++i ) {
Runner::RunnerState state = runner->getNext(NULL, &end);
massert( 13418, "captrunc invalid n", Runner::RUNNER_ADVANCED == state);
}
collection->temp_cappedTruncateAfter( txn, end, inc );
return true;
}
};
// Testing-only, enabled via command line.
class EmptyCapped : public Command {
public:
EmptyCapped() : Command( "emptycapped" ) {}
virtual bool slaveOk() const { return false; }
virtual bool isWriteCommandForConfigServer() const { return false; }
virtual bool logTheOp() { return true; }
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {}
virtual std::vector<BSONObj> stopIndexBuilds(OperationContext* opCtx,
Database* db,
const BSONObj& cmdObj) {
std::string coll = cmdObj[ "emptycapped" ].valuestrsafe();
std::string ns = db->name() + '.' + coll;
IndexCatalog::IndexKillCriteria criteria;
criteria.ns = ns;
return IndexBuilder::killMatchingIndexBuilds(db->getCollection(opCtx, ns), criteria);
}
virtual bool run(OperationContext* txn, const string& dbname , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
string coll = cmdObj[ "emptycapped" ].valuestrsafe();
uassert( 13428, "emptycapped must specify a collection", !coll.empty() );
NamespaceString nss( dbname, coll );
Client::WriteContext ctx(txn, nss.ns() );
Database* db = ctx.ctx().db();
Collection* collection = db->getCollection( txn, nss.ns() );
massert( 13429, "emptycapped no such collection", collection );
std::vector<BSONObj> indexes = stopIndexBuilds(txn, db, cmdObj);
Status status = collection->truncate(txn);
if ( !status.isOK() )
return appendCommandStatus( result, status );
IndexBuilder::restoreIndexes(indexes);
if (!fromRepl)
repl::logOp(txn, "c",(dbname + ".$cmd").c_str(), cmdObj);
return true;
}
};
// ----------------------------
MONGO_INITIALIZER(RegisterEmptyCappedCmd)(InitializerContext* context) {
if (Command::testCommandsEnabled) {
// Leaked intentionally: a Command registers itself when constructed.
new CapTrunc();
new CmdSleep();
new EmptyCapped();
new GodInsert();
}
return Status::OK();
}
}
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