mirror of
https://github.com/mongodb/mongo.git
synced 2024-12-01 01:21:03 +01:00
1894 lines
71 KiB
C++
1894 lines
71 KiB
C++
// dbcommands.cpp
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/**
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* SHARDING:
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I believe this file is for mongod only.
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See s/commnands_public.cpp for mongos.
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*/
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#include "pch.h"
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#include "ops/query.h"
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#include "pdfile.h"
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#include "jsobj.h"
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#include "../bson/util/builder.h"
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#include <time.h>
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#include "introspect.h"
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#include "btree.h"
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#include "../util/lruishmap.h"
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#include "../util/md5.hpp"
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#include "../util/processinfo.h"
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#include "json.h"
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#include "repl.h"
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#include "repl_block.h"
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#include "replutil.h"
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#include "commands.h"
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#include "db.h"
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#include "instance.h"
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#include "lasterror.h"
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#include "security.h"
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#include "queryoptimizer.h"
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#include "../scripting/engine.h"
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#include "stats/counters.h"
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#include "background.h"
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#include "../util/version.h"
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#include "../s/d_writeback.h"
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#include "dur_stats.h"
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namespace mongo {
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namespace dur {
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void setAgeOutJournalFiles(bool rotate);
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}
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bool setParmsMongodSpecific(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
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BSONElement e = cmdObj["ageOutJournalFiles"];
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if( !e.eoo() ) {
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bool r = e.trueValue();
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log() << "ageOutJournalFiles " << r << endl;
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dur::setAgeOutJournalFiles(r);
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}
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return true;
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}
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void flushDiagLog();
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/* reset any errors so that getlasterror comes back clean.
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useful before performing a long series of operations where we want to
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see if any of the operations triggered an error, but don't want to check
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after each op as that woudl be a client/server turnaround.
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*/
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class CmdResetError : public Command {
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public:
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virtual LockType locktype() const { return NONE; }
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virtual bool requiresAuth() { return false; }
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virtual bool logTheOp() {
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return false;
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}
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virtual bool slaveOk() const {
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return true;
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}
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virtual void help( stringstream& help ) const {
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help << "reset error state (used with getpreverror)";
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}
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CmdResetError() : Command("resetError", false, "reseterror") {}
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bool run(const string& db, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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LastError *le = lastError.get();
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assert( le );
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le->reset();
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return true;
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}
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} cmdResetError;
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/* set by replica sets if specified in the configuration.
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a pointer is used to avoid any possible locking issues with lockless reading (see below locktype() is NONE
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and would like to keep that)
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(for now, it simply orphans any old copy as config changes should be extremely rare).
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note: once non-null, never goes to null again.
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*/
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BSONObj *getLastErrorDefault = 0;
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class CmdGetLastError : public Command {
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public:
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CmdGetLastError() : Command("getLastError", false, "getlasterror") { }
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virtual LockType locktype() const { return NONE; }
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virtual bool requiresAuth() { return false; }
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virtual bool logTheOp() { return false; }
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virtual bool slaveOk() const { return true; }
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virtual void help( stringstream& help ) const {
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help << "return error status of the last operation on this connection\n"
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<< "options:\n"
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<< " { fsync:true } - fsync before returning, or wait for journal commit if running with --journal\n"
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<< " { j:true } - wait for journal commit if running with --journal\n"
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<< " { w:n } - await replication to n servers (including self) before returning\n"
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<< " { wtimeout:m} - timeout for w in m milliseconds";
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}
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bool run(const string& dbname, BSONObj& _cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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LastError *le = lastError.disableForCommand();
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bool err = false;
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if ( le->nPrev != 1 )
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err = LastError::noError.appendSelf( result , false );
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else
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err = le->appendSelf( result , false );
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Client& c = cc();
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c.appendLastOp( result );
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result.appendNumber( "connectionId" , c.getConnectionId() ); // for sharding; also useful in general for debugging
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BSONObj cmdObj = _cmdObj;
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{
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BSONObj::iterator i(_cmdObj);
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i.next();
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if( !i.more() ) {
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/* empty, use default */
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BSONObj *def = getLastErrorDefault;
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if( def )
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cmdObj = *def;
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}
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}
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if ( cmdObj["j"].trueValue() ) {
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if( !getDur().awaitCommit() ) {
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// --journal is off
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result.append("jnote", "journaling not enabled on this server");
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}
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if( cmdObj["fsync"].trueValue() ) {
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errmsg = "fsync and j options are not used together";
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return false;
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}
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}
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else if ( cmdObj["fsync"].trueValue() ) {
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Timer t;
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if( !getDur().awaitCommit() ) {
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// if get here, not running with --journal
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log() << "fsync from getlasterror" << endl;
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result.append( "fsyncFiles" , MemoryMappedFile::flushAll( true ) );
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}
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else {
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// this perhaps is temp. how long we wait for the group commit to occur.
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result.append( "waited", t.millis() );
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}
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}
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if ( err ) {
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// doesn't make sense to wait for replication
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// if there was an error
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return true;
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}
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BSONElement e = cmdObj["w"];
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if ( e.ok() ) {
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int timeout = cmdObj["wtimeout"].numberInt();
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Timer t;
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long long passes = 0;
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char buf[32];
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while ( 1 ) {
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OpTime op(c.getLastOp());
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if ( op.isNull() ) {
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if ( anyReplEnabled() ) {
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result.append( "wnote" , "no write has been done on this connection" );
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}
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else if ( e.isNumber() && e.numberInt() <= 1 ) {
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// don't do anything
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// w=1 and no repl, so this is fine
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}
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else {
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// w=2 and no repl
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result.append( "wnote" , "no replication has been enabled, so w=2+ won't work" );
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result.append( "err", "norepl" );
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return true;
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}
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break;
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}
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// check this first for w=0 or w=1
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if ( opReplicatedEnough( op, e ) ) {
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break;
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}
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// if replication isn't enabled (e.g., config servers)
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if ( ! anyReplEnabled() ) {
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result.append( "err", "norepl" );
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return true;
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}
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if ( timeout > 0 && t.millis() >= timeout ) {
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result.append( "wtimeout" , true );
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errmsg = "timed out waiting for slaves";
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result.append( "waited" , t.millis() );
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result.append( "err" , "timeout" );
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return true;
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}
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assert( sprintf( buf , "w block pass: %lld" , ++passes ) < 30 );
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c.curop()->setMessage( buf );
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sleepmillis(1);
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killCurrentOp.checkForInterrupt();
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}
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result.appendNumber( "wtime" , t.millis() );
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}
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result.appendNull( "err" );
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return true;
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}
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} cmdGetLastError;
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class CmdGetPrevError : public Command {
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public:
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virtual LockType locktype() const { return NONE; }
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virtual bool requiresAuth() { return false; }
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virtual bool logTheOp() {
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return false;
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}
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virtual void help( stringstream& help ) const {
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help << "check for errors since last reseterror commandcal";
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}
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virtual bool slaveOk() const {
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return true;
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}
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CmdGetPrevError() : Command("getPrevError", false, "getpreverror") {}
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bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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LastError *le = lastError.disableForCommand();
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le->appendSelf( result );
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if ( le->valid )
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result.append( "nPrev", le->nPrev );
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else
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result.append( "nPrev", -1 );
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return true;
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}
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} cmdGetPrevError;
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CmdShutdown cmdShutdown;
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void CmdShutdown::help( stringstream& help ) const {
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help << "shutdown the database. must be ran against admin db and "
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<< "either (1) ran from localhost or (2) authenticated. If "
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<< "this is a primary in a replica set and there is no member "
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<< "within 10 seconds of its optime, it will not shutdown "
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<< "without force : true. You can also specify timeoutSecs : "
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<< "N to wait N seconds for other members to catch up.";
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}
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bool CmdShutdown::run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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bool force = cmdObj.hasField("force") && cmdObj["force"].trueValue();
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if (!force && theReplSet && theReplSet->isPrimary()) {
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int timeout, now, start;
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timeout = now = start = curTimeMicros64()/1000000;
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if (cmdObj.hasField("timeoutSecs")) {
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timeout += cmdObj["timeoutSecs"].numberInt();
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}
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OpTime lastOp = theReplSet->lastOpTimeWritten;
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OpTime closest = theReplSet->lastOtherOpTime();
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long long int diff = lastOp.getSecs() - closest.getSecs();
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while (now <= timeout && (diff < 0 || diff > 10)) {
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sleepsecs(1);
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now++;
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lastOp = theReplSet->lastOpTimeWritten;
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closest = theReplSet->lastOtherOpTime();
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diff = lastOp.getSecs() - closest.getSecs();
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}
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if (diff < 0 || diff > 10) {
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errmsg = "no secondaries within 10 seconds of my optime";
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result.append("closest", closest.getSecs());
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result.append("difference", diff);
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return false;
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}
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// step down
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theReplSet->stepDown(120);
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log() << "waiting for secondaries to catch up" << endl;
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lastOp = theReplSet->lastOpTimeWritten;
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while (lastOp != closest && now - start < 60) {
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closest = theReplSet->lastOtherOpTime();
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now++;
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sleepsecs(1);
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}
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// regardless of whether they caught up, we'll shut down
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}
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return shutdownHelper();
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}
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class CmdDropDatabase : public Command {
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public:
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virtual bool logTheOp() {
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return true;
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}
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virtual void help( stringstream& help ) const {
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help << "drop (delete) this database";
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}
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virtual bool slaveOk() const {
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return false;
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}
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virtual LockType locktype() const { return WRITE; }
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CmdDropDatabase() : Command("dropDatabase") {}
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bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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BSONElement e = cmdObj.firstElement();
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log() << "dropDatabase " << dbname << endl;
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int p = (int) e.number();
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if ( p != 1 )
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return false;
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dropDatabase(dbname);
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result.append( "dropped" , dbname );
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return true;
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}
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} cmdDropDatabase;
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class CmdRepairDatabase : public Command {
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public:
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virtual bool logTheOp() {
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return false;
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}
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virtual bool slaveOk() const {
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return true;
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}
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virtual void help( stringstream& help ) const {
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help << "repair database. also compacts. note: slow.";
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}
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virtual LockType locktype() const { return WRITE; }
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CmdRepairDatabase() : Command("repairDatabase") {}
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bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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BSONElement e = cmdObj.firstElement();
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log() << "repairDatabase " << dbname << endl;
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int p = (int) e.number();
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if ( p != 1 ) {
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errmsg = "bad option";
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return false;
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}
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e = cmdObj.getField( "preserveClonedFilesOnFailure" );
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bool preserveClonedFilesOnFailure = e.isBoolean() && e.boolean();
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e = cmdObj.getField( "backupOriginalFiles" );
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bool backupOriginalFiles = e.isBoolean() && e.boolean();
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return repairDatabase( dbname, errmsg, preserveClonedFilesOnFailure, backupOriginalFiles );
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}
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} cmdRepairDatabase;
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/* set db profiling level
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todo: how do we handle profiling information put in the db with replication?
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sensibly or not?
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*/
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class CmdProfile : public Command {
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public:
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virtual bool slaveOk() const {
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return true;
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}
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virtual void help( stringstream& help ) const {
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help << "enable or disable performance profiling\n";
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help << "{ profile : <n> }\n";
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help << "0=off 1=log slow ops 2=log all\n";
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help << "-1 to get current values\n";
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help << "http://www.mongodb.org/display/DOCS/Database+Profiler";
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}
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virtual LockType locktype() const { return WRITE; }
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CmdProfile() : Command("profile") {}
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bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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BSONElement e = cmdObj.firstElement();
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result.append("was", cc().database()->profile);
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result.append("slowms", cmdLine.slowMS );
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int p = (int) e.number();
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bool ok = false;
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if ( p == -1 )
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ok = true;
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else if ( p >= 0 && p <= 2 ) {
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ok = cc().database()->setProfilingLevel( p , errmsg );
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}
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BSONElement slow = cmdObj["slowms"];
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if ( slow.isNumber() )
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cmdLine.slowMS = slow.numberInt();
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return ok;
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}
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} cmdProfile;
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class CmdServerStatus : public Command {
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public:
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virtual bool slaveOk() const {
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return true;
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}
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CmdServerStatus() : Command("serverStatus", true) {
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started = time(0);
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}
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virtual LockType locktype() const { return NONE; }
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virtual void help( stringstream& help ) const {
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help << "returns lots of administrative server statistics";
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}
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bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
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long long start = Listener::getElapsedTimeMillis();
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BSONObjBuilder timeBuilder(128);
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bool authed = cc().getAuthenticationInfo()->isAuthorizedReads("admin");
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result.append( "host" , prettyHostName() );
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result.append("version", versionString);
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result.append("process","mongod");
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result.append("uptime",(double) (time(0)-started));
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result.append("uptimeEstimate",(double) (start/1000));
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result.appendDate( "localTime" , jsTime() );
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{
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BSONObjBuilder t;
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unsigned long long last, start, timeLocked;
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dbMutex.info().getTimingInfo(start, timeLocked);
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last = curTimeMicros64();
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double tt = (double) last-start;
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double tl = (double) timeLocked;
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t.append("totalTime", tt);
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t.append("lockTime", tl);
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t.append("ratio", (tt ? tl/tt : 0));
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{
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BSONObjBuilder ttt( t.subobjStart( "currentQueue" ) );
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int w=0, r=0;
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Client::recommendedYieldMicros( &w , &r );
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ttt.append( "total" , w + r );
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ttt.append( "readers" , r );
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ttt.append( "writers" , w );
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ttt.done();
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}
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{
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BSONObjBuilder ttt( t.subobjStart( "activeClients" ) );
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int w=0, r=0;
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Client::getActiveClientCount( w , r );
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ttt.append( "total" , w + r );
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ttt.append( "readers" , r );
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ttt.append( "writers" , w );
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ttt.done();
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}
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result.append( "globalLock" , t.obj() );
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}
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timeBuilder.appendNumber( "after basic" , Listener::getElapsedTimeMillis() - start );
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{
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BSONObjBuilder t( result.subobjStart( "mem" ) );
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t.append("bits", ( sizeof(int*) == 4 ? 32 : 64 ) );
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ProcessInfo p;
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int v = 0;
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if ( p.supported() ) {
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t.appendNumber( "resident" , p.getResidentSize() );
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v = p.getVirtualMemorySize();
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t.appendNumber( "virtual" , v );
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t.appendBool( "supported" , true );
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}
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else {
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result.append( "note" , "not all mem info support on this platform" );
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t.appendBool( "supported" , false );
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}
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timeBuilder.appendNumber( "middle of mem" , Listener::getElapsedTimeMillis() - start );
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int m = (int) (MemoryMappedFile::totalMappedLength() / ( 1024 * 1024 ));
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t.appendNumber( "mapped" , m );
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if ( cmdLine.dur ) {
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m *= 2;
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t.appendNumber( "mappedWithJournal" , m );
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}
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if( v - m > 5000 ) {
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t.append("note", "virtual minus mapped is large. could indicate a memory leak");
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log() << "warning: virtual size (" << v << "MB) - mapped size (" << m << "MB) is large. could indicate a memory leak" << endl;
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}
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|
t.done();
|
|
|
|
}
|
|
timeBuilder.appendNumber( "after mem" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
{
|
|
BSONObjBuilder bb( result.subobjStart( "connections" ) );
|
|
bb.append( "current" , connTicketHolder.used() );
|
|
bb.append( "available" , connTicketHolder.available() );
|
|
bb.done();
|
|
}
|
|
timeBuilder.appendNumber( "after connections" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
{
|
|
BSONObjBuilder bb( result.subobjStart( "extra_info" ) );
|
|
bb.append("note", "fields vary by platform");
|
|
ProcessInfo p;
|
|
p.getExtraInfo(bb);
|
|
bb.done();
|
|
timeBuilder.appendNumber( "after extra info" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
}
|
|
|
|
{
|
|
BSONObjBuilder bb( result.subobjStart( "indexCounters" ) );
|
|
globalIndexCounters.append( bb );
|
|
bb.done();
|
|
}
|
|
|
|
{
|
|
BSONObjBuilder bb( result.subobjStart( "backgroundFlushing" ) );
|
|
globalFlushCounters.append( bb );
|
|
bb.done();
|
|
}
|
|
|
|
{
|
|
BSONObjBuilder bb( result.subobjStart( "cursors" ) );
|
|
ClientCursor::appendStats( bb );
|
|
bb.done();
|
|
}
|
|
|
|
{
|
|
BSONObjBuilder bb( result.subobjStart( "network" ) );
|
|
networkCounter.append( bb );
|
|
bb.done();
|
|
}
|
|
|
|
|
|
timeBuilder.appendNumber( "after counters" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
if ( anyReplEnabled() ) {
|
|
BSONObjBuilder bb( result.subobjStart( "repl" ) );
|
|
appendReplicationInfo( bb , authed , cmdObj["repl"].numberInt() );
|
|
bb.done();
|
|
|
|
if ( ! _isMaster() ) {
|
|
result.append( "opcountersRepl" , replOpCounters.getObj() );
|
|
}
|
|
|
|
}
|
|
|
|
timeBuilder.appendNumber( "after repl" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
result.append( "opcounters" , globalOpCounters.getObj() );
|
|
|
|
{
|
|
BSONObjBuilder asserts( result.subobjStart( "asserts" ) );
|
|
asserts.append( "regular" , assertionCount.regular );
|
|
asserts.append( "warning" , assertionCount.warning );
|
|
asserts.append( "msg" , assertionCount.msg );
|
|
asserts.append( "user" , assertionCount.user );
|
|
asserts.append( "rollovers" , assertionCount.rollovers );
|
|
asserts.done();
|
|
}
|
|
|
|
timeBuilder.appendNumber( "after asserts" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
result.append( "writeBacksQueued" , ! writeBackManager.queuesEmpty() );
|
|
|
|
if( cmdLine.dur ) {
|
|
result.append("dur", dur::stats.asObj());
|
|
}
|
|
|
|
timeBuilder.appendNumber( "after dur" , Listener::getElapsedTimeMillis() - start );
|
|
|
|
if ( ! authed )
|
|
result.append( "note" , "run against admin for more info" );
|
|
|
|
timeBuilder.appendNumber( "at end" , Listener::getElapsedTimeMillis() - start );
|
|
if ( Listener::getElapsedTimeMillis() - start > 1000 ) {
|
|
BSONObj t = timeBuilder.obj();
|
|
log() << "serverStatus was very slow: " << t << endl;
|
|
result.append( "timing" , t );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
time_t started;
|
|
} cmdServerStatus;
|
|
|
|
class CmdGetOpTime : public Command {
|
|
public:
|
|
virtual bool slaveOk() const {
|
|
return true;
|
|
}
|
|
virtual void help( stringstream& help ) const { help << "internal"; }
|
|
virtual LockType locktype() const { return NONE; }
|
|
CmdGetOpTime() : Command("getoptime") { }
|
|
bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
|
|
writelock l( "" );
|
|
result.appendDate("optime", OpTime::now().asDate());
|
|
return true;
|
|
}
|
|
} cmdgetoptime;
|
|
|
|
/*
|
|
class Cmd : public Command {
|
|
public:
|
|
Cmd() : Command("") { }
|
|
bool adminOnly() const { return true; }
|
|
bool run(const char *ns, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result) {
|
|
return true;
|
|
}
|
|
} cmd;
|
|
*/
|
|
|
|
class CmdDiagLogging : public Command {
|
|
public:
|
|
virtual bool slaveOk() const {
|
|
return true;
|
|
}
|
|
CmdDiagLogging() : Command("diagLogging") { }
|
|
bool adminOnly() const {
|
|
return true;
|
|
}
|
|
void help(stringstream& h) const { h << "http://www.mongodb.org/display/DOCS/Monitoring+and+Diagnostics#MonitoringandDiagnostics-DatabaseRecord%2FReplay"; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
int was = _diaglog.setLevel( cmdObj.firstElement().numberInt() );
|
|
flushDiagLog();
|
|
if ( !cmdLine.quiet )
|
|
tlog() << "CMD: diagLogging set to " << _diaglog.level << " from: " << was << endl;
|
|
result.append( "was" , was );
|
|
return true;
|
|
}
|
|
} cmddiaglogging;
|
|
|
|
/* remove bit from a bit array - actually remove its slot, not a clear
|
|
note: this function does not work with x == 63 -- that is ok
|
|
but keep in mind in the future if max indexes were extended to
|
|
exactly 64 it would be a problem
|
|
*/
|
|
unsigned long long removeBit(unsigned long long b, int x) {
|
|
unsigned long long tmp = b;
|
|
return
|
|
(tmp & ((((unsigned long long) 1) << x)-1)) |
|
|
((tmp >> (x+1)) << x);
|
|
}
|
|
|
|
struct DBCommandsUnitTest {
|
|
DBCommandsUnitTest() {
|
|
assert( removeBit(1, 0) == 0 );
|
|
assert( removeBit(2, 0) == 1 );
|
|
assert( removeBit(2, 1) == 0 );
|
|
assert( removeBit(255, 1) == 127 );
|
|
assert( removeBit(21, 2) == 9 );
|
|
assert( removeBit(0x4000000000000001ULL, 62) == 1 );
|
|
}
|
|
} dbc_unittest;
|
|
|
|
void assureSysIndexesEmptied(const char *ns, IndexDetails *exceptForIdIndex);
|
|
int removeFromSysIndexes(const char *ns, const char *idxName);
|
|
|
|
bool dropIndexes( NamespaceDetails *d, const char *ns, const char *name, string &errmsg, BSONObjBuilder &anObjBuilder, bool mayDeleteIdIndex ) {
|
|
|
|
BackgroundOperation::assertNoBgOpInProgForNs(ns);
|
|
|
|
d = d->writingWithExtra();
|
|
d->aboutToDeleteAnIndex();
|
|
|
|
/* there may be pointers pointing at keys in the btree(s). kill them. */
|
|
ClientCursor::invalidate(ns);
|
|
|
|
// delete a specific index or all?
|
|
if ( *name == '*' && name[1] == 0 ) {
|
|
log(4) << " d->nIndexes was " << d->nIndexes << '\n';
|
|
anObjBuilder.append("nIndexesWas", (double)d->nIndexes);
|
|
IndexDetails *idIndex = 0;
|
|
if( d->nIndexes ) {
|
|
for ( int i = 0; i < d->nIndexes; i++ ) {
|
|
if ( !mayDeleteIdIndex && d->idx(i).isIdIndex() ) {
|
|
idIndex = &d->idx(i);
|
|
}
|
|
else {
|
|
d->idx(i).kill_idx();
|
|
}
|
|
}
|
|
d->nIndexes = 0;
|
|
}
|
|
if ( idIndex ) {
|
|
d->addIndex(ns) = *idIndex;
|
|
wassert( d->nIndexes == 1 );
|
|
}
|
|
/* assuming here that id index is not multikey: */
|
|
d->multiKeyIndexBits = 0;
|
|
assureSysIndexesEmptied(ns, idIndex);
|
|
anObjBuilder.append("msg", mayDeleteIdIndex ?
|
|
"indexes dropped for collection" :
|
|
"non-_id indexes dropped for collection");
|
|
}
|
|
else {
|
|
// delete just one index
|
|
int x = d->findIndexByName(name);
|
|
if ( x >= 0 ) {
|
|
log(4) << " d->nIndexes was " << d->nIndexes << endl;
|
|
anObjBuilder.append("nIndexesWas", (double)d->nIndexes);
|
|
|
|
/* note it is important we remove the IndexDetails with this
|
|
call, otherwise, on recreate, the old one would be reused, and its
|
|
IndexDetails::info ptr would be bad info.
|
|
*/
|
|
IndexDetails *id = &d->idx(x);
|
|
if ( !mayDeleteIdIndex && id->isIdIndex() ) {
|
|
errmsg = "may not delete _id index";
|
|
return false;
|
|
}
|
|
id->kill_idx();
|
|
d->multiKeyIndexBits = removeBit(d->multiKeyIndexBits, x);
|
|
d->nIndexes--;
|
|
for ( int i = x; i < d->nIndexes; i++ )
|
|
d->idx(i) = d->idx(i+1);
|
|
}
|
|
else {
|
|
int n = removeFromSysIndexes(ns, name); // just in case an orphaned listing there - i.e. should have been repaired but wasn't
|
|
if( n ) {
|
|
log() << "info: removeFromSysIndexes cleaned up " << n << " entries" << endl;
|
|
}
|
|
log() << "dropIndexes: " << name << " not found" << endl;
|
|
errmsg = "index not found";
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* drop collection */
|
|
class CmdDrop : public Command {
|
|
public:
|
|
CmdDrop() : Command("drop") { }
|
|
virtual bool logTheOp() {
|
|
return true;
|
|
}
|
|
virtual bool slaveOk() const {
|
|
return false;
|
|
}
|
|
virtual bool adminOnly() const {
|
|
return false;
|
|
}
|
|
virtual void help( stringstream& help ) const { help << "drop a collection\n{drop : <collectionName>}"; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
string nsToDrop = dbname + '.' + cmdObj.firstElement().valuestr();
|
|
NamespaceDetails *d = nsdetails(nsToDrop.c_str());
|
|
if ( !cmdLine.quiet )
|
|
tlog() << "CMD: drop " << nsToDrop << endl;
|
|
if ( d == 0 ) {
|
|
errmsg = "ns not found";
|
|
return false;
|
|
}
|
|
uassert( 10039 , "can't drop collection with reserved $ character in name", strchr(nsToDrop.c_str(), '$') == 0 );
|
|
dropCollection( nsToDrop, errmsg, result );
|
|
return true;
|
|
}
|
|
} cmdDrop;
|
|
|
|
/* select count(*) */
|
|
class CmdCount : public Command {
|
|
public:
|
|
virtual LockType locktype() const { return READ; }
|
|
CmdCount() : Command("count") { }
|
|
virtual bool logTheOp() {
|
|
return false;
|
|
}
|
|
virtual bool slaveOk() const {
|
|
// ok on --slave setups
|
|
return replSettings.slave == SimpleSlave;
|
|
}
|
|
virtual bool slaveOverrideOk() {
|
|
return true;
|
|
}
|
|
virtual bool adminOnly() const {
|
|
return false;
|
|
}
|
|
virtual void help( stringstream& help ) const { help << "count objects in collection"; }
|
|
virtual bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
string ns = dbname + '.' + cmdObj.firstElement().valuestr();
|
|
string err;
|
|
long long n = runCount(ns.c_str(), cmdObj, err);
|
|
long long nn = n;
|
|
bool ok = true;
|
|
if ( n == -1 ) {
|
|
nn = 0;
|
|
result.appendBool( "missing" , true );
|
|
}
|
|
else if ( n < 0 ) {
|
|
nn = 0;
|
|
ok = false;
|
|
if ( !err.empty() )
|
|
errmsg = err;
|
|
}
|
|
result.append("n", (double) nn);
|
|
return ok;
|
|
}
|
|
} cmdCount;
|
|
|
|
/* create collection */
|
|
class CmdCreate : public Command {
|
|
public:
|
|
CmdCreate() : Command("create") { }
|
|
virtual bool logTheOp() {
|
|
return false;
|
|
}
|
|
virtual bool slaveOk() const {
|
|
return false;
|
|
}
|
|
virtual bool adminOnly() const {
|
|
return false;
|
|
}
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual void help( stringstream& help ) const {
|
|
help << "create a collection explicitly\n"
|
|
"{ create: <ns>[, capped: <bool>, size: <collSizeInBytes>, max: <nDocs>] }";
|
|
}
|
|
virtual bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
string ns = dbname + '.' + cmdObj.firstElement().valuestr();
|
|
string err;
|
|
uassert(14832, "specify size:<n> when capped is true", !cmdObj["capped"].trueValue() || cmdObj["size"].isNumber() || cmdObj.hasField("$nExtents"));
|
|
bool ok = userCreateNS(ns.c_str(), cmdObj, err, ! fromRepl );
|
|
if ( !ok && !err.empty() )
|
|
errmsg = err;
|
|
return ok;
|
|
}
|
|
} cmdCreate;
|
|
|
|
/* "dropIndexes" is now the preferred form - "deleteIndexes" deprecated */
|
|
class CmdDropIndexes : public Command {
|
|
public:
|
|
virtual bool logTheOp() {
|
|
return true;
|
|
}
|
|
virtual bool slaveOk() const {
|
|
return false;
|
|
}
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual void help( stringstream& help ) const {
|
|
help << "drop indexes for a collection";
|
|
}
|
|
CmdDropIndexes() : Command("dropIndexes", false, "deleteIndexes") { }
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& anObjBuilder, bool /*fromRepl*/) {
|
|
BSONElement e = jsobj.firstElement();
|
|
string toDeleteNs = dbname + '.' + e.valuestr();
|
|
NamespaceDetails *d = nsdetails(toDeleteNs.c_str());
|
|
if ( !cmdLine.quiet )
|
|
tlog() << "CMD: dropIndexes " << toDeleteNs << endl;
|
|
if ( d ) {
|
|
BSONElement f = jsobj.getField("index");
|
|
if ( f.type() == String ) {
|
|
return dropIndexes( d, toDeleteNs.c_str(), f.valuestr(), errmsg, anObjBuilder, false );
|
|
}
|
|
else if ( f.type() == Object ) {
|
|
int idxId = d->findIndexByKeyPattern( f.embeddedObject() );
|
|
if ( idxId < 0 ) {
|
|
errmsg = "can't find index with key:";
|
|
errmsg += f.embeddedObject().toString();
|
|
return false;
|
|
}
|
|
else {
|
|
IndexDetails& ii = d->idx( idxId );
|
|
string iName = ii.indexName();
|
|
return dropIndexes( d, toDeleteNs.c_str(), iName.c_str() , errmsg, anObjBuilder, false );
|
|
}
|
|
}
|
|
else {
|
|
errmsg = "invalid index name spec";
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
errmsg = "ns not found";
|
|
return false;
|
|
}
|
|
}
|
|
} cmdDropIndexes;
|
|
|
|
class CmdReIndex : public Command {
|
|
public:
|
|
virtual bool logTheOp() { return false; } // only reindexes on the one node
|
|
virtual bool slaveOk() const { return true; } // can reindex on a secondary
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual void help( stringstream& help ) const {
|
|
help << "re-index a collection";
|
|
}
|
|
CmdReIndex() : Command("reIndex") { }
|
|
bool run(const string& dbname , BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool /*fromRepl*/) {
|
|
static DBDirectClient db;
|
|
|
|
BSONElement e = jsobj.firstElement();
|
|
string toDeleteNs = dbname + '.' + e.valuestr();
|
|
NamespaceDetails *d = nsdetails(toDeleteNs.c_str());
|
|
tlog() << "CMD: reIndex " << toDeleteNs << endl;
|
|
BackgroundOperation::assertNoBgOpInProgForNs(toDeleteNs.c_str());
|
|
|
|
if ( ! d ) {
|
|
errmsg = "ns not found";
|
|
return false;
|
|
}
|
|
|
|
list<BSONObj> all;
|
|
auto_ptr<DBClientCursor> i = db.getIndexes( toDeleteNs );
|
|
BSONObjBuilder b;
|
|
while ( i->more() ) {
|
|
BSONObj o = i->next().removeField("v").getOwned();
|
|
b.append( BSONObjBuilder::numStr( all.size() ) , o );
|
|
all.push_back( o );
|
|
}
|
|
|
|
|
|
bool ok = dropIndexes( d, toDeleteNs.c_str(), "*" , errmsg, result, true );
|
|
if ( ! ok ) {
|
|
errmsg = "dropIndexes failed";
|
|
return false;
|
|
}
|
|
|
|
for ( list<BSONObj>::iterator i=all.begin(); i!=all.end(); i++ ) {
|
|
BSONObj o = *i;
|
|
theDataFileMgr.insertWithObjMod( Namespace( toDeleteNs.c_str() ).getSisterNS( "system.indexes" ).c_str() , o , true );
|
|
}
|
|
|
|
result.append( "nIndexes" , (int)all.size() );
|
|
result.appendArray( "indexes" , b.obj() );
|
|
return true;
|
|
}
|
|
} cmdReIndex;
|
|
|
|
class CmdListDatabases : public Command {
|
|
public:
|
|
virtual bool slaveOk() const {
|
|
return true;
|
|
}
|
|
virtual bool slaveOverrideOk() {
|
|
return true;
|
|
}
|
|
virtual bool adminOnly() const {
|
|
return true;
|
|
}
|
|
virtual LockType locktype() const { return NONE; }
|
|
virtual void help( stringstream& help ) const { help << "list databases on this server"; }
|
|
CmdListDatabases() : Command("listDatabases" , true ) {}
|
|
bool run(const string& dbname , BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool /*fromRepl*/) {
|
|
vector< string > dbNames;
|
|
getDatabaseNames( dbNames );
|
|
vector< BSONObj > dbInfos;
|
|
|
|
set<string> seen;
|
|
boost::intmax_t totalSize = 0;
|
|
for ( vector< string >::iterator i = dbNames.begin(); i != dbNames.end(); ++i ) {
|
|
BSONObjBuilder b;
|
|
b.append( "name", *i );
|
|
|
|
boost::intmax_t size = dbSize( i->c_str() );
|
|
b.append( "sizeOnDisk", (double) size );
|
|
totalSize += size;
|
|
|
|
{
|
|
readlock lk( *i );
|
|
Client::Context ctx( *i );
|
|
b.appendBool( "empty", ctx.db()->isEmpty() );
|
|
}
|
|
|
|
dbInfos.push_back( b.obj() );
|
|
|
|
seen.insert( i->c_str() );
|
|
}
|
|
|
|
// TODO: erh 1/1/2010 I think this is broken where path != dbpath ??
|
|
set<string> allShortNames;
|
|
{
|
|
readlock lk;
|
|
dbHolder.getAllShortNames( allShortNames );
|
|
}
|
|
|
|
for ( set<string>::iterator i = allShortNames.begin(); i != allShortNames.end(); i++ ) {
|
|
string name = *i;
|
|
|
|
if ( seen.count( name ) )
|
|
continue;
|
|
|
|
BSONObjBuilder b;
|
|
b.append( "name" , name );
|
|
b.append( "sizeOnDisk" , (double)1.0 );
|
|
|
|
{
|
|
readlock lk( name );
|
|
Client::Context ctx( name );
|
|
b.appendBool( "empty", ctx.db()->isEmpty() );
|
|
}
|
|
|
|
dbInfos.push_back( b.obj() );
|
|
}
|
|
|
|
result.append( "databases", dbInfos );
|
|
result.append( "totalSize", double( totalSize ) );
|
|
return true;
|
|
}
|
|
} cmdListDatabases;
|
|
|
|
/* note an access to a database right after this will open it back up - so this is mainly
|
|
for diagnostic purposes.
|
|
*/
|
|
class CmdCloseAllDatabases : public Command {
|
|
public:
|
|
virtual void help( stringstream& help ) const { help << "Close all database files.\nA new request will cause an immediate reopening; thus, this is mostly for testing purposes."; }
|
|
virtual bool adminOnly() const { return true; }
|
|
virtual bool slaveOk() const { return false; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
|
|
CmdCloseAllDatabases() : Command( "closeAllDatabases" ) {}
|
|
bool run(const string& dbname , BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool /*fromRepl*/) {
|
|
bool ok;
|
|
try {
|
|
ok = dbHolder.closeAll( dbpath , result, false );
|
|
}
|
|
catch(DBException&) {
|
|
throw;
|
|
}
|
|
catch(...) {
|
|
log() << "ERROR uncaught exception in command closeAllDatabases" << endl;
|
|
errmsg = "unexpected uncaught exception";
|
|
return false;
|
|
}
|
|
return ok;
|
|
}
|
|
} cmdCloseAllDatabases;
|
|
|
|
class CmdFileMD5 : public Command {
|
|
public:
|
|
CmdFileMD5() : Command( "filemd5" ) {}
|
|
virtual bool slaveOk() const {
|
|
return true;
|
|
}
|
|
virtual void help( stringstream& help ) const {
|
|
help << " example: { filemd5 : ObjectId(aaaaaaa) , root : \"fs\" }";
|
|
}
|
|
virtual LockType locktype() const { return READ; }
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
string ns = dbname;
|
|
ns += ".";
|
|
{
|
|
string root = jsobj.getStringField( "root" );
|
|
if ( root.size() == 0 )
|
|
root = "fs";
|
|
ns += root;
|
|
}
|
|
ns += ".chunks"; // make this an option in jsobj
|
|
|
|
md5digest d;
|
|
md5_state_t st;
|
|
md5_init(&st);
|
|
|
|
BSONObj query = BSON( "files_id" << jsobj["filemd5"] );
|
|
BSONObj sort = BSON( "files_id" << 1 << "n" << 1 );
|
|
|
|
shared_ptr<Cursor> cursor = bestGuessCursor(ns.c_str(), query, sort);
|
|
auto_ptr<ClientCursor> cc (new ClientCursor(QueryOption_NoCursorTimeout, cursor, ns.c_str()));
|
|
|
|
int n = 0;
|
|
while ( cursor->ok() ) {
|
|
if ( ! cursor->matcher()->matchesCurrent( cursor.get() ) ) {
|
|
log() << "**** NOT MATCHING ****" << endl;
|
|
PRINT(cursor->current());
|
|
cursor->advance();
|
|
continue;
|
|
}
|
|
|
|
BSONObj obj = cursor->current();
|
|
cursor->advance();
|
|
|
|
BSONElement ne = obj["n"];
|
|
assert(ne.isNumber());
|
|
int myn = ne.numberInt();
|
|
if ( n != myn ) {
|
|
log() << "should have chunk: " << n << " have:" << myn << endl;
|
|
dumpChunks( ns , query , sort );
|
|
uassert( 10040 , "chunks out of order" , n == myn );
|
|
}
|
|
|
|
int len;
|
|
const char * data = obj["data"].binDataClean( len );
|
|
|
|
ClientCursor::YieldLock yield (cc.get());
|
|
try {
|
|
md5_append( &st , (const md5_byte_t*)(data) , len );
|
|
n++;
|
|
}
|
|
catch (...) {
|
|
if ( ! yield.stillOk() ) // relocks
|
|
cc.release();
|
|
throw;
|
|
}
|
|
|
|
if ( ! yield.stillOk() ) {
|
|
cc.release();
|
|
uasserted(13281, "File deleted during filemd5 command");
|
|
}
|
|
}
|
|
|
|
md5_finish(&st, d);
|
|
|
|
result.append( "numChunks" , n );
|
|
result.append( "md5" , digestToString( d ) );
|
|
return true;
|
|
}
|
|
|
|
void dumpChunks( const string& ns , const BSONObj& query , const BSONObj& sort ) {
|
|
DBDirectClient client;
|
|
Query q(query);
|
|
q.sort(sort);
|
|
auto_ptr<DBClientCursor> c = client.query(ns, q);
|
|
while(c->more())
|
|
PRINT(c->nextSafe());
|
|
}
|
|
} cmdFileMD5;
|
|
|
|
static IndexDetails *cmdIndexDetailsForRange( const char *ns, string &errmsg, BSONObj &min, BSONObj &max, BSONObj &keyPattern ) {
|
|
if ( ns[ 0 ] == '\0' || min.isEmpty() || max.isEmpty() ) {
|
|
errmsg = "invalid command syntax (note: min and max are required)";
|
|
return 0;
|
|
}
|
|
return indexDetailsForRange( ns, errmsg, min, max, keyPattern );
|
|
}
|
|
|
|
class CmdDatasize : public Command {
|
|
public:
|
|
CmdDatasize() : Command( "dataSize", false, "datasize" ) {}
|
|
virtual bool slaveOk() const { return true; }
|
|
virtual LockType locktype() const { return READ; }
|
|
virtual void help( stringstream &help ) const {
|
|
help <<
|
|
"determine data size for a set of data in a certain range"
|
|
"\nexample: { dataSize:\"blog.posts\", keyPattern:{x:1}, min:{x:10}, max:{x:55} }"
|
|
"\nkeyPattern, min, and max parameters are optional."
|
|
"\nnote: This command may take a while to run";
|
|
}
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
Timer timer;
|
|
|
|
string ns = jsobj.firstElement().String();
|
|
BSONObj min = jsobj.getObjectField( "min" );
|
|
BSONObj max = jsobj.getObjectField( "max" );
|
|
BSONObj keyPattern = jsobj.getObjectField( "keyPattern" );
|
|
bool estimate = jsobj["estimate"].trueValue();
|
|
|
|
Client::Context ctx( ns );
|
|
NamespaceDetails *d = nsdetails(ns.c_str());
|
|
|
|
if ( ! d || d->stats.nrecords == 0 ) {
|
|
result.appendNumber( "size" , 0 );
|
|
result.appendNumber( "numObjects" , 0 );
|
|
result.append( "millis" , timer.millis() );
|
|
return true;
|
|
}
|
|
|
|
result.appendBool( "estimate" , estimate );
|
|
|
|
shared_ptr<Cursor> c;
|
|
if ( min.isEmpty() && max.isEmpty() ) {
|
|
if ( estimate ) {
|
|
result.appendNumber( "size" , d->stats.datasize );
|
|
result.appendNumber( "numObjects" , d->stats.nrecords );
|
|
result.append( "millis" , timer.millis() );
|
|
return 1;
|
|
}
|
|
c = theDataFileMgr.findAll( ns.c_str() );
|
|
}
|
|
else if ( min.isEmpty() || max.isEmpty() ) {
|
|
errmsg = "only one of min or max specified";
|
|
return false;
|
|
}
|
|
else {
|
|
IndexDetails *idx = cmdIndexDetailsForRange( ns.c_str(), errmsg, min, max, keyPattern );
|
|
if ( idx == 0 )
|
|
return false;
|
|
|
|
c.reset( BtreeCursor::make( d, d->idxNo(*idx), *idx, min, max, false, 1 ) );
|
|
}
|
|
|
|
long long avgObjSize = d->stats.datasize / d->stats.nrecords;
|
|
|
|
long long maxSize = jsobj["maxSize"].numberLong();
|
|
long long maxObjects = jsobj["maxObjects"].numberLong();
|
|
|
|
long long size = 0;
|
|
long long numObjects = 0;
|
|
while( c->ok() ) {
|
|
|
|
if ( estimate )
|
|
size += avgObjSize;
|
|
else
|
|
size += c->currLoc().rec()->netLength();
|
|
|
|
numObjects++;
|
|
|
|
if ( ( maxSize && size > maxSize ) ||
|
|
( maxObjects && numObjects > maxObjects ) ) {
|
|
result.appendBool( "maxReached" , true );
|
|
break;
|
|
}
|
|
|
|
c->advance();
|
|
}
|
|
|
|
ostringstream os;
|
|
os << "Finding size for ns: " << ns;
|
|
if ( ! min.isEmpty() ) {
|
|
os << " between " << min << " and " << max;
|
|
}
|
|
logIfSlow( timer , os.str() );
|
|
|
|
result.appendNumber( "size", size );
|
|
result.appendNumber( "numObjects" , numObjects );
|
|
result.append( "millis" , timer.millis() );
|
|
return true;
|
|
}
|
|
} cmdDatasize;
|
|
|
|
namespace {
|
|
long long getIndexSizeForCollection(string db, string ns, BSONObjBuilder* details=NULL, int scale = 1 ) {
|
|
dbMutex.assertAtLeastReadLocked();
|
|
|
|
NamespaceDetails * nsd = nsdetails( ns.c_str() );
|
|
if ( ! nsd )
|
|
return 0;
|
|
|
|
long long totalSize = 0;
|
|
|
|
NamespaceDetails::IndexIterator ii = nsd->ii();
|
|
while ( ii.more() ) {
|
|
IndexDetails& d = ii.next();
|
|
string collNS = d.indexNamespace();
|
|
NamespaceDetails * mine = nsdetails( collNS.c_str() );
|
|
if ( ! mine ) {
|
|
log() << "error: have index [" << collNS << "] but no NamespaceDetails" << endl;
|
|
continue;
|
|
}
|
|
totalSize += mine->stats.datasize;
|
|
if ( details )
|
|
details->appendNumber( d.indexName() , mine->stats.datasize / scale );
|
|
}
|
|
return totalSize;
|
|
}
|
|
}
|
|
|
|
class CollectionStats : public Command {
|
|
public:
|
|
CollectionStats() : Command( "collStats", false, "collstats" ) {}
|
|
virtual bool slaveOk() const { return true; }
|
|
virtual LockType locktype() const { return READ; }
|
|
virtual void help( stringstream &help ) const {
|
|
help << "{ collStats:\"blog.posts\" , scale : 1 } scale divides sizes e.g. for KB use 1024\n"
|
|
" avgObjSize - in bytes";
|
|
}
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
string ns = dbname + "." + jsobj.firstElement().valuestr();
|
|
Client::Context cx( ns );
|
|
|
|
NamespaceDetails * nsd = nsdetails( ns.c_str() );
|
|
if ( ! nsd ) {
|
|
errmsg = "ns not found";
|
|
return false;
|
|
}
|
|
|
|
result.append( "ns" , ns.c_str() );
|
|
|
|
int scale = 1;
|
|
if ( jsobj["scale"].isNumber() ) {
|
|
scale = jsobj["scale"].numberInt();
|
|
if ( scale <= 0 ) {
|
|
errmsg = "scale has to be > 0";
|
|
return false;
|
|
}
|
|
}
|
|
else if ( jsobj["scale"].trueValue() ) {
|
|
errmsg = "scale has to be a number > 0";
|
|
return false;
|
|
}
|
|
|
|
bool verbose = jsobj["verbose"].trueValue();
|
|
|
|
long long size = nsd->stats.datasize / scale;
|
|
result.appendNumber( "count" , nsd->stats.nrecords );
|
|
result.appendNumber( "size" , size );
|
|
if( nsd->stats.nrecords )
|
|
result.append ( "avgObjSize" , double(size) / double(nsd->stats.nrecords) );
|
|
|
|
int numExtents;
|
|
BSONArrayBuilder extents;
|
|
|
|
result.appendNumber( "storageSize" , nsd->storageSize( &numExtents , verbose ? &extents : 0 ) / scale );
|
|
result.append( "numExtents" , numExtents );
|
|
result.append( "nindexes" , nsd->nIndexes );
|
|
result.append( "lastExtentSize" , nsd->lastExtentSize / scale );
|
|
result.append( "paddingFactor" , nsd->paddingFactor );
|
|
result.append( "flags" , nsd->flags );
|
|
|
|
BSONObjBuilder indexSizes;
|
|
result.appendNumber( "totalIndexSize" , getIndexSizeForCollection(dbname, ns, &indexSizes, scale) / scale );
|
|
result.append("indexSizes", indexSizes.obj());
|
|
|
|
if ( nsd->capped ) {
|
|
result.append( "capped" , nsd->capped );
|
|
result.append( "max" , nsd->max );
|
|
}
|
|
|
|
if ( verbose )
|
|
result.appendArray( "extents" , extents.arr() );
|
|
|
|
return true;
|
|
}
|
|
} cmdCollectionStatis;
|
|
|
|
class DBStats : public Command {
|
|
public:
|
|
DBStats() : Command( "dbStats", false, "dbstats" ) {}
|
|
virtual bool slaveOk() const { return true; }
|
|
virtual LockType locktype() const { return READ; }
|
|
virtual void help( stringstream &help ) const {
|
|
help <<
|
|
"Get stats on a database. Not instantaneous. Slower for databases with large .ns files.\n" <<
|
|
"Example: { dbStats:1, scale:1 }";
|
|
}
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
int scale = 1;
|
|
if ( jsobj["scale"].isNumber() ) {
|
|
scale = jsobj["scale"].numberInt();
|
|
if ( scale <= 0 ) {
|
|
errmsg = "scale has to be > 0";
|
|
return false;
|
|
}
|
|
}
|
|
else if ( jsobj["scale"].trueValue() ) {
|
|
errmsg = "scale has to be a number > 0";
|
|
return false;
|
|
}
|
|
|
|
list<string> collections;
|
|
Database* d = cc().database();
|
|
if ( d )
|
|
d->namespaceIndex.getNamespaces( collections );
|
|
|
|
long long ncollections = 0;
|
|
long long objects = 0;
|
|
long long size = 0;
|
|
long long storageSize = 0;
|
|
long long numExtents = 0;
|
|
long long indexes = 0;
|
|
long long indexSize = 0;
|
|
|
|
for (list<string>::const_iterator it = collections.begin(); it != collections.end(); ++it) {
|
|
const string ns = *it;
|
|
|
|
NamespaceDetails * nsd = nsdetails( ns.c_str() );
|
|
if ( ! nsd ) {
|
|
errmsg = "missing ns: ";
|
|
errmsg += ns;
|
|
return false;
|
|
}
|
|
|
|
ncollections += 1;
|
|
objects += nsd->stats.nrecords;
|
|
size += nsd->stats.datasize;
|
|
|
|
int temp;
|
|
storageSize += nsd->storageSize( &temp );
|
|
numExtents += temp;
|
|
|
|
indexes += nsd->nIndexes;
|
|
indexSize += getIndexSizeForCollection(dbname, ns);
|
|
}
|
|
|
|
result.append ( "db" , dbname );
|
|
result.appendNumber( "collections" , ncollections );
|
|
result.appendNumber( "objects" , objects );
|
|
result.append ( "avgObjSize" , objects == 0 ? 0 : double(size) / double(objects) );
|
|
result.appendNumber( "dataSize" , size / scale );
|
|
result.appendNumber( "storageSize" , storageSize / scale);
|
|
result.appendNumber( "numExtents" , numExtents );
|
|
result.appendNumber( "indexes" , indexes );
|
|
result.appendNumber( "indexSize" , indexSize / scale );
|
|
result.appendNumber( "fileSize" , d->fileSize() / scale );
|
|
if( d )
|
|
result.appendNumber( "nsSizeMB", (int) d->namespaceIndex.fileLength() / 1024 / 1024 );
|
|
|
|
return true;
|
|
}
|
|
} cmdDBStats;
|
|
|
|
/* convertToCapped seems to use this */
|
|
class CmdCloneCollectionAsCapped : public Command {
|
|
public:
|
|
CmdCloneCollectionAsCapped() : Command( "cloneCollectionAsCapped" ) {}
|
|
virtual bool slaveOk() const { return false; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual void help( stringstream &help ) const {
|
|
help << "{ cloneCollectionAsCapped:<fromName>, toCollection:<toName>, size:<sizeInBytes> }";
|
|
}
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
string from = jsobj.getStringField( "cloneCollectionAsCapped" );
|
|
string to = jsobj.getStringField( "toCollection" );
|
|
long long size = (long long)jsobj.getField( "size" ).number();
|
|
|
|
if ( from.empty() || to.empty() || size == 0 ) {
|
|
errmsg = "invalid command spec";
|
|
return false;
|
|
}
|
|
|
|
string fromNs = dbname + "." + from;
|
|
string toNs = dbname + "." + to;
|
|
NamespaceDetails *nsd = nsdetails( fromNs.c_str() );
|
|
massert( 10301 , "source collection " + fromNs + " does not exist", nsd );
|
|
long long excessSize = nsd->stats.datasize - size * 2; // datasize and extentSize can't be compared exactly, so add some padding to 'size'
|
|
DiskLoc extent = nsd->firstExtent;
|
|
for( ; excessSize > extent.ext()->length && extent != nsd->lastExtent; extent = extent.ext()->xnext ) {
|
|
excessSize -= extent.ext()->length;
|
|
log( 2 ) << "cloneCollectionAsCapped skipping extent of size " << extent.ext()->length << endl;
|
|
log( 6 ) << "excessSize: " << excessSize << endl;
|
|
}
|
|
DiskLoc startLoc = extent.ext()->firstRecord;
|
|
|
|
CursorId id;
|
|
{
|
|
shared_ptr<Cursor> c = theDataFileMgr.findAll( fromNs.c_str(), startLoc );
|
|
ClientCursor *cc = new ClientCursor(0, c, fromNs.c_str());
|
|
id = cc->cursorid();
|
|
}
|
|
|
|
DBDirectClient client;
|
|
Client::Context ctx( toNs );
|
|
BSONObjBuilder spec;
|
|
spec.appendBool( "capped", true );
|
|
spec.append( "size", double( size ) );
|
|
if ( !userCreateNS( toNs.c_str(), spec.done(), errmsg, true ) )
|
|
return false;
|
|
|
|
auto_ptr< DBClientCursor > c = client.getMore( fromNs, id );
|
|
while( c->more() ) {
|
|
BSONObj obj = c->next();
|
|
theDataFileMgr.insertAndLog( toNs.c_str(), obj, true );
|
|
getDur().commitIfNeeded();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
} cmdCloneCollectionAsCapped;
|
|
|
|
/* jan2010:
|
|
Converts the given collection to a capped collection w/ the specified size.
|
|
This command is not highly used, and is not currently supported with sharded
|
|
environments.
|
|
*/
|
|
class CmdConvertToCapped : public Command {
|
|
public:
|
|
CmdConvertToCapped() : Command( "convertToCapped" ) {}
|
|
virtual bool slaveOk() const { return false; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual void help( stringstream &help ) const {
|
|
help << "{ convertToCapped:<fromCollectionName>, size:<sizeInBytes> }";
|
|
}
|
|
bool run(const string& dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
|
|
BackgroundOperation::assertNoBgOpInProgForDb(dbname.c_str());
|
|
|
|
string from = jsobj.getStringField( "convertToCapped" );
|
|
long long size = (long long)jsobj.getField( "size" ).number();
|
|
|
|
if ( from.empty() || size == 0 ) {
|
|
errmsg = "invalid command spec";
|
|
return false;
|
|
}
|
|
|
|
string shortTmpName = str::stream() << ".tmp.convertToCapped." << from;
|
|
string longTmpName = str::stream() << dbname << "." << shortTmpName;
|
|
|
|
DBDirectClient client;
|
|
client.dropCollection( longTmpName );
|
|
|
|
BSONObj info;
|
|
if ( !client.runCommand( dbname ,
|
|
BSON( "cloneCollectionAsCapped" << from << "toCollection" << shortTmpName << "size" << double( size ) ),
|
|
info ) ) {
|
|
errmsg = "cloneCollectionAsCapped failed: " + info.toString();
|
|
return false;
|
|
}
|
|
|
|
if ( !client.dropCollection( dbname + "." + from ) ) {
|
|
errmsg = "failed to drop original collection";
|
|
return false;
|
|
}
|
|
|
|
if ( !client.runCommand( "admin",
|
|
BSON( "renameCollection" << longTmpName <<
|
|
"to" << ( dbname + "." + from ) ),
|
|
info ) ) {
|
|
errmsg = "renameCollection failed: " + info.toString();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
} cmdConvertToCapped;
|
|
|
|
/* Returns client's uri */
|
|
class CmdWhatsMyUri : public Command {
|
|
public:
|
|
CmdWhatsMyUri() : Command("whatsmyuri") { }
|
|
virtual bool slaveOk() const {
|
|
return true;
|
|
}
|
|
virtual LockType locktype() const { return NONE; }
|
|
virtual bool requiresAuth() {
|
|
return false;
|
|
}
|
|
virtual void help( stringstream &help ) const {
|
|
help << "{whatsmyuri:1}";
|
|
}
|
|
virtual bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
BSONObj info = cc().curop()->infoNoauth();
|
|
result << "you" << info[ "client" ];
|
|
return true;
|
|
}
|
|
} cmdWhatsMyUri;
|
|
|
|
/* For testing only, not for general use */
|
|
class GodInsert : public Command {
|
|
public:
|
|
GodInsert() : Command( "godinsert" ) { }
|
|
virtual bool logTheOp() {
|
|
return true;
|
|
}
|
|
virtual bool slaveOk() const {
|
|
return false;
|
|
}
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual bool requiresAuth() {
|
|
return true;
|
|
}
|
|
virtual void help( stringstream &help ) const {
|
|
help << "internal. for testing only.";
|
|
}
|
|
virtual bool run(const string& dbname, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
string coll = cmdObj[ "godinsert" ].valuestrsafe();
|
|
uassert( 13049, "godinsert must specify a collection", !coll.empty() );
|
|
string ns = dbname + "." + coll;
|
|
BSONObj obj = cmdObj[ "obj" ].embeddedObjectUserCheck();
|
|
theDataFileMgr.insertWithObjMod( ns.c_str(), obj, true );
|
|
return true;
|
|
}
|
|
} cmdGodInsert;
|
|
|
|
class DBHashCmd : public Command {
|
|
public:
|
|
DBHashCmd() : Command( "dbHash", false, "dbhash" ) {}
|
|
virtual bool slaveOk() const { return true; }
|
|
virtual LockType locktype() const { return READ; }
|
|
virtual bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
list<string> colls;
|
|
Database* db = cc().database();
|
|
if ( db )
|
|
db->namespaceIndex.getNamespaces( colls );
|
|
colls.sort();
|
|
|
|
result.appendNumber( "numCollections" , (long long)colls.size() );
|
|
result.append( "host" , prettyHostName() );
|
|
|
|
md5_state_t globalState;
|
|
md5_init(&globalState);
|
|
|
|
BSONObjBuilder bb( result.subobjStart( "collections" ) );
|
|
for ( list<string>::iterator i=colls.begin(); i != colls.end(); i++ ) {
|
|
string c = *i;
|
|
if ( c.find( ".system.profil" ) != string::npos )
|
|
continue;
|
|
|
|
shared_ptr<Cursor> cursor;
|
|
|
|
NamespaceDetails * nsd = nsdetails( c.c_str() );
|
|
|
|
// debug SERVER-761
|
|
NamespaceDetails::IndexIterator ii = nsd->ii();
|
|
while( ii.more() ) {
|
|
const IndexDetails &idx = ii.next();
|
|
if ( !idx.head.isValid() || !idx.info.isValid() ) {
|
|
log() << "invalid index for ns: " << c << " " << idx.head << " " << idx.info;
|
|
if ( idx.info.isValid() )
|
|
log() << " " << idx.info.obj();
|
|
log() << endl;
|
|
}
|
|
}
|
|
|
|
int idNum = nsd->findIdIndex();
|
|
if ( idNum >= 0 ) {
|
|
cursor.reset( BtreeCursor::make( nsd , idNum , nsd->idx( idNum ) , BSONObj() , BSONObj() , false , 1 ) );
|
|
}
|
|
else if ( c.find( ".system." ) != string::npos ) {
|
|
continue;
|
|
}
|
|
else if ( nsd->capped ) {
|
|
cursor = findTableScan( c.c_str() , BSONObj() );
|
|
}
|
|
else {
|
|
bb.done();
|
|
errmsg = (string)"can't find _id index for: " + c;
|
|
return 0;
|
|
}
|
|
|
|
md5_state_t st;
|
|
md5_init(&st);
|
|
|
|
long long n = 0;
|
|
while ( cursor->ok() ) {
|
|
BSONObj c = cursor->current();
|
|
md5_append( &st , (const md5_byte_t*)c.objdata() , c.objsize() );
|
|
n++;
|
|
cursor->advance();
|
|
}
|
|
md5digest d;
|
|
md5_finish(&st, d);
|
|
string hash = digestToString( d );
|
|
|
|
bb.append( c.c_str() + ( dbname.size() + 1 ) , hash );
|
|
|
|
md5_append( &globalState , (const md5_byte_t*)hash.c_str() , hash.size() );
|
|
}
|
|
bb.done();
|
|
|
|
md5digest d;
|
|
md5_finish(&globalState, d);
|
|
string hash = digestToString( d );
|
|
|
|
result.append( "md5" , hash );
|
|
|
|
return 1;
|
|
}
|
|
|
|
} dbhashCmd;
|
|
|
|
/* for diagnostic / testing purposes. */
|
|
class CmdSleep : public Command {
|
|
public:
|
|
virtual LockType locktype() const { return NONE; }
|
|
virtual bool adminOnly() const { return true; }
|
|
virtual bool logTheOp() { return false; }
|
|
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>";
|
|
}
|
|
CmdSleep() : Command("sleep") { }
|
|
bool run(const string& ns, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
|
|
int secs = 100;
|
|
if ( cmdObj["secs"].isNumber() )
|
|
secs = cmdObj["secs"].numberInt();
|
|
if( cmdObj.getBoolField("w") ) {
|
|
writelock lk("");
|
|
sleepsecs(secs);
|
|
}
|
|
else {
|
|
readlock lk("");
|
|
sleepsecs(secs);
|
|
}
|
|
return true;
|
|
}
|
|
} cmdSleep;
|
|
|
|
// just for testing
|
|
class CapTrunc : public Command {
|
|
public:
|
|
CapTrunc() : Command( "captrunc" ) {}
|
|
virtual bool slaveOk() const { return false; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual bool requiresAuth() { return true; }
|
|
virtual bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
string coll = cmdObj[ "captrunc" ].valuestrsafe();
|
|
uassert( 13416, "captrunc must specify a collection", !coll.empty() );
|
|
string ns = dbname + "." + coll;
|
|
int n = cmdObj.getIntField( "n" );
|
|
|
|
// inclusive range?
|
|
bool inc = cmdObj.getBoolField( "inc" );
|
|
NamespaceDetails *nsd = nsdetails( ns.c_str() );
|
|
ReverseCappedCursor c( nsd );
|
|
massert( 13417, "captrunc collection not found or empty", c.ok() );
|
|
for( int i = 0; i < n; ++i ) {
|
|
massert( 13418, "captrunc invalid n", c.advance() );
|
|
}
|
|
DiskLoc end = c.currLoc();
|
|
nsd->cappedTruncateAfter( ns.c_str(), end, inc );
|
|
return true;
|
|
}
|
|
} capTruncCmd;
|
|
|
|
// just for testing
|
|
class EmptyCapped : public Command {
|
|
public:
|
|
EmptyCapped() : Command( "emptycapped" ) {}
|
|
virtual bool slaveOk() const { return false; }
|
|
virtual LockType locktype() const { return WRITE; }
|
|
virtual bool requiresAuth() { return true; }
|
|
virtual bool run(const string& dbname , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {
|
|
string coll = cmdObj[ "emptycapped" ].valuestrsafe();
|
|
uassert( 13428, "emptycapped must specify a collection", !coll.empty() );
|
|
string ns = dbname + "." + coll;
|
|
NamespaceDetails *nsd = nsdetails( ns.c_str() );
|
|
massert( 13429, "emptycapped no such collection", nsd );
|
|
nsd->emptyCappedCollection( ns.c_str() );
|
|
return true;
|
|
}
|
|
} emptyCappedCmd;
|
|
|
|
/**
|
|
* this handles
|
|
- auth
|
|
- locking
|
|
- context
|
|
then calls run()
|
|
*/
|
|
bool execCommand( Command * c ,
|
|
Client& client , int queryOptions ,
|
|
const char *cmdns, BSONObj& cmdObj ,
|
|
BSONObjBuilder& result,
|
|
bool fromRepl ) {
|
|
|
|
string dbname = nsToDatabase( cmdns );
|
|
|
|
AuthenticationInfo *ai = client.getAuthenticationInfo();
|
|
|
|
if( c->adminOnly() && c->localHostOnlyIfNoAuth( cmdObj ) && noauth && !ai->isLocalHost ) {
|
|
result.append( "errmsg" ,
|
|
"unauthorized: this command must run from localhost when running db without auth" );
|
|
log() << "command denied: " << cmdObj.toString() << endl;
|
|
return false;
|
|
}
|
|
|
|
if ( c->adminOnly() && ! fromRepl && dbname != "admin" ) {
|
|
result.append( "errmsg" , "access denied; use admin db" );
|
|
log() << "command denied: " << cmdObj.toString() << endl;
|
|
return false;
|
|
}
|
|
|
|
if ( cmdObj["help"].trueValue() ) {
|
|
client.curop()->ensureStarted();
|
|
stringstream ss;
|
|
ss << "help for: " << c->name << " ";
|
|
c->help( ss );
|
|
result.append( "help" , ss.str() );
|
|
result.append( "lockType" , c->locktype() );
|
|
return true;
|
|
}
|
|
|
|
bool canRunHere =
|
|
isMaster( dbname.c_str() ) ||
|
|
c->slaveOk() ||
|
|
( c->slaveOverrideOk() && ( queryOptions & QueryOption_SlaveOk ) ) ||
|
|
fromRepl;
|
|
|
|
if ( ! canRunHere ) {
|
|
result.append( "errmsg" , "not master" );
|
|
return false;
|
|
}
|
|
|
|
if ( c->adminOnly() )
|
|
log( 2 ) << "command: " << cmdObj << endl;
|
|
|
|
if ( c->locktype() == Command::NONE ) {
|
|
// we also trust that this won't crash
|
|
client.curop()->ensureStarted();
|
|
string errmsg;
|
|
int ok = c->run( dbname , cmdObj , errmsg , result , fromRepl );
|
|
if ( ! ok )
|
|
result.append( "errmsg" , errmsg );
|
|
return ok;
|
|
}
|
|
|
|
bool needWriteLock = c->locktype() == Command::WRITE;
|
|
|
|
if ( ! needWriteLock ) {
|
|
assert( ! c->logTheOp() );
|
|
}
|
|
|
|
mongolock lk( needWriteLock );
|
|
client.curop()->ensureStarted();
|
|
Client::Context ctx( dbname , dbpath , &lk , c->requiresAuth() );
|
|
|
|
try {
|
|
string errmsg;
|
|
if ( ! c->run(dbname, cmdObj, errmsg, result, fromRepl ) ) {
|
|
result.append( "errmsg" , errmsg );
|
|
return false;
|
|
}
|
|
}
|
|
catch ( DBException& e ) {
|
|
stringstream ss;
|
|
ss << "exception: " << e.what();
|
|
result.append( "errmsg" , ss.str() );
|
|
result.append( "code" , e.getCode() );
|
|
return false;
|
|
}
|
|
|
|
if ( c->logTheOp() && ! fromRepl ) {
|
|
logOp("c", cmdns, cmdObj);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/* TODO make these all command objects -- legacy stuff here
|
|
|
|
usage:
|
|
abc.$cmd.findOne( { ismaster:1 } );
|
|
|
|
returns true if ran a cmd
|
|
*/
|
|
bool _runCommands(const char *ns, BSONObj& _cmdobj, BufBuilder &b, BSONObjBuilder& anObjBuilder, bool fromRepl, int queryOptions) {
|
|
string dbname = nsToDatabase( ns );
|
|
|
|
if( logLevel >= 1 )
|
|
log() << "run command " << ns << ' ' << _cmdobj << endl;
|
|
|
|
const char *p = strchr(ns, '.');
|
|
if ( !p ) return false;
|
|
if ( strcmp(p, ".$cmd") != 0 ) return false;
|
|
|
|
BSONObj jsobj;
|
|
{
|
|
BSONElement e = _cmdobj.firstElement();
|
|
if ( e.type() == Object && (e.fieldName()[0] == '$'
|
|
? str::equals("query", e.fieldName()+1)
|
|
: str::equals("query", e.fieldName())))
|
|
{
|
|
jsobj = e.embeddedObject();
|
|
}
|
|
else {
|
|
jsobj = _cmdobj;
|
|
}
|
|
}
|
|
|
|
Client& client = cc();
|
|
bool ok = false;
|
|
|
|
BSONElement e = jsobj.firstElement();
|
|
|
|
Command * c = e.type() ? Command::findCommand( e.fieldName() ) : 0;
|
|
|
|
if ( c ) {
|
|
ok = execCommand( c , client , queryOptions , ns , jsobj , anObjBuilder , fromRepl );
|
|
}
|
|
else {
|
|
anObjBuilder.append("errmsg", str::stream() << "no such cmd: " << e.fieldName() );
|
|
anObjBuilder.append("bad cmd" , _cmdobj );
|
|
}
|
|
|
|
// switch to bool, but wait a bit longer before switching?
|
|
// anObjBuilder.append("ok", ok);
|
|
anObjBuilder.append("ok", ok?1.0:0.0);
|
|
BSONObj x = anObjBuilder.done();
|
|
b.appendBuf((void*) x.objdata(), x.objsize());
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace mongo
|