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// list_databases.cpp
/**
* Copyright (C) 2014 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/db/catalog/database.h"
#include "mongo/db/catalog/database_catalog_entry.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/service_context.h"
#include "mongo/db/storage/storage_engine.h"
namespace mongo {
using std::set;
using std::string;
using std::stringstream;
using std::vector;
// XXX: remove and put into storage api
intmax_t dbSize(const string& database);
class CmdListDatabases : public Command {
public:
virtual bool slaveOk() const {
return false;
}
virtual bool slaveOverrideOk() const {
return true;
}
virtual bool adminOnly() const {
return true;
}
virtual bool isWriteCommandForConfigServer() const {
return false;
}
virtual void help(stringstream& help) const {
help << "list databases on this server";
}
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet actions;
actions.addAction(ActionType::listDatabases);
out->push_back(Privilege(ResourcePattern::forClusterResource(), actions));
}
CmdListDatabases() : Command("listDatabases", true) {}
bool run(OperationContext* txn,
const string& dbname,
BSONObj& jsobj,
int,
string& errmsg,
BSONObjBuilder& result) {
vector<string> dbNames;
StorageEngine* storageEngine = getGlobalServiceContext()->getGlobalStorageEngine();
storageEngine->listDatabases(&dbNames);
vector<BSONObj> dbInfos;
set<string> seen;
intmax_t totalSize = 0;
for (vector<string>::iterator i = dbNames.begin(); i != dbNames.end(); ++i) {
const string& dbname = *i;
BSONObjBuilder b;
b.append("name", dbname);
{
ScopedTransaction transaction(txn, MODE_IS);
Lock::DBLock dbLock(txn->lockState(), dbname, MODE_IS);
Database* db = dbHolder().get(txn, dbname);
if (!db)
continue;
const DatabaseCatalogEntry* entry = db->getDatabaseCatalogEntry();
invariant(entry);
int64_t size = entry->sizeOnDisk(txn);
b.append("sizeOnDisk", static_cast<double>(size));
totalSize += size;
b.appendBool("empty", size == 0);
}
dbInfos.push_back(b.obj());
seen.insert(i->c_str());
}
result.append("databases", dbInfos);
result.append("totalSize", double(totalSize));
return true;
}
} cmdListDatabases;
}
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