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/**
* Copyright (C) 2015 MongoDB 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
#include "mongo/platform/basic.h"
#include <string>
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/fsync.h"
#include "mongo/db/curop.h"
#include "mongo/db/dbmessage.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/matcher/matcher.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/stats/fill_locker_info.h"
#include "mongo/util/log.h"
namespace mongo {
class CurrentOpCommand : public Command {
public:
CurrentOpCommand() : Command("currentOp") {}
bool isWriteCommandForConfigServer() const final { return false; }
bool slaveOk() const final { return true; }
bool adminOnly() const final { return true; }
Status checkAuthForCommand(ClientBasic* client,
const std::string& dbname,
const BSONObj& cmdObj) final {
bool isAuthorized = AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forClusterResource(),
ActionType::inprog);
return isAuthorized ? Status::OK() : Status(ErrorCodes::Unauthorized, "Unauthorized");
}
bool run(OperationContext* txn,
const std::string& db,
BSONObj& cmdObj,
int options,
std::string& errmsg,
BSONObjBuilder& result) final {
const bool includeAll = cmdObj["$all"].trueValue();
// Filter the output
BSONObj filter;
{
BSONObjBuilder b;
BSONObjIterator i(cmdObj);
invariant(i.more());
i.next(); // skip {currentOp: 1} which is required to be the first element
while (i.more()) {
BSONElement e = i.next();
if (str::equals("$all", e.fieldName())) {
continue;
}
b.append(e);
}
filter = b.obj();
}
const WhereCallbackReal whereCallback(txn, db);
const Matcher matcher(filter, whereCallback);
BSONArrayBuilder inprogBuilder(result.subarrayStart("inprog"));
boost::lock_guard<boost::mutex> scopedLock(Client::clientsMutex);
ClientSet::const_iterator it = Client::clients.begin();
for ( ; it != Client::clients.end(); it++) {
Client* client = *it;
invariant(client);
boost::unique_lock<Client> uniqueLock(*client);
const OperationContext* opCtx = client->getOperationContext();
if (!includeAll) {
// Skip over inactive connections.
if (!opCtx || !opCtx->getCurOp() || !opCtx->getCurOp()->active()) {
continue;
}
}
BSONObjBuilder infoBuilder;
// The client information
client->reportState(infoBuilder);
// Operation context specific information
if (opCtx) {
// CurOp
if (opCtx->getCurOp()) {
opCtx->getCurOp()->reportState(&infoBuilder);
}
// LockState
Locker::LockerInfo lockerInfo;
client->getOperationContext()->lockState()->getLockerInfo(&lockerInfo);
fillLockerInfo(lockerInfo, infoBuilder);
}
else {
// If no operation context, mark the operation as inactive
infoBuilder.append("active", false);
}
infoBuilder.done();
const BSONObj info = infoBuilder.obj();
if (includeAll || matcher.matches(info)) {
inprogBuilder.append(info);
}
}
inprogBuilder.done();
if (lockedForWriting()) {
result.append("fsyncLock", true);
result.append("info",
"use db.fsyncUnlock() to terminate the fsync write/snapshot lock");
}
return true;
}
} currentOpCommand;
} // namespace mongo
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