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-rw-r--r--src/mongo/db/database.cpp502
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diff --git a/src/mongo/db/database.cpp b/src/mongo/db/database.cpp
deleted file mode 100644
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--- a/src/mongo/db/database.cpp
+++ /dev/null
@@ -1,502 +0,0 @@
-// database.cpp
-
-/**
-* Copyright (C) 2008 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/>.
-*/
-
-#include "mongo/pch.h"
-
-#include "mongo/db/database.h"
-
-#include <boost/filesystem/operations.hpp>
-
-#include "mongo/db/auth/auth_index_d.h"
-#include "mongo/db/clientcursor.h"
-#include "mongo/db/databaseholder.h"
-#include "mongo/db/instance.h"
-#include "mongo/db/introspect.h"
-#include "mongo/db/pdfile.h"
-
-namespace mongo {
-
- void assertDbAtLeastReadLocked(const Database *db) {
- if( db ) {
- Lock::assertAtLeastReadLocked(db->name);
- }
- else {
- verify( Lock::isLocked() );
- }
- }
-
- void assertDbWriteLocked(const Database *db) {
- if( db ) {
- Lock::assertWriteLocked(db->name);
- }
- else {
- verify( Lock::isW() );
- }
- }
-
- Database::~Database() {
- verify( Lock::isW() );
- magic = 0;
- size_t n = _files.size();
- for ( size_t i = 0; i < n; i++ )
- delete _files[i];
- if( ccByLoc.size() ) {
- log() << "\n\n\nWARNING: ccByLoc not empty on database close! " << ccByLoc.size() << ' ' << name << endl;
- }
- }
-
- Database::Database(const char *nm, bool& newDb, const string& _path )
- : name(nm), path(_path), namespaceIndex( path, name ),
- profileName(name + ".system.profile")
- {
- try {
- {
- // check db name is valid
- size_t L = strlen(nm);
- uassert( 10028 , "db name is empty", L > 0 );
- uassert( 10032 , "db name too long", L < 64 );
- uassert( 10029 , "bad db name [1]", *nm != '.' );
- uassert( 10030 , "bad db name [2]", nm[L-1] != '.' );
- uassert( 10031 , "bad char(s) in db name", strchr(nm, ' ') == 0 );
-#ifdef _WIN32
- static const char* windowsReservedNames[] = {
- "con", "prn", "aux", "nul",
- "com1", "com2", "com3", "com4", "com5", "com6", "com7", "com8", "com9",
- "lpt1", "lpt2", "lpt3", "lpt4", "lpt5", "lpt6", "lpt7", "lpt8", "lpt9"
- };
- for ( size_t i = 0; i < (sizeof(windowsReservedNames) / sizeof(char*)); ++i ) {
- if ( strcasecmp( nm, windowsReservedNames[i] ) == 0 ) {
- stringstream errorString;
- errorString << "db name \"" << nm << "\" is a reserved name";
- uassert( 16185 , errorString.str(), false );
- }
- }
-#endif
- }
- newDb = namespaceIndex.exists();
- _profile = cmdLine.defaultProfile;
- checkDuplicateUncasedNames(true);
- // If already exists, open. Otherwise behave as if empty until
- // there's a write, then open.
- if (!newDb) {
- namespaceIndex.init();
- openAllFiles();
- }
- magic = 781231;
- } catch(std::exception& e) {
- log() << "warning database " << path << " " << nm << " could not be opened" << endl;
- DBException* dbe = dynamic_cast<DBException*>(&e);
- if ( dbe != 0 ) {
- log() << "DBException " << dbe->getCode() << ": " << e.what() << endl;
- }
- else {
- log() << e.what() << endl;
- }
- // since destructor won't be called:
- for ( size_t i = 0; i < _files.size(); i++ ) {
- delete _files[i];
- }
- _files.clear();
- throw;
- }
- }
-
- void Database::checkDuplicateUncasedNames(bool inholderlock) const {
- string duplicate = duplicateUncasedName(inholderlock, name, path );
- if ( !duplicate.empty() ) {
- stringstream ss;
- ss << "db already exists with different case other: [" << duplicate << "] me [" << name << "]";
- uasserted( DatabaseDifferCaseCode , ss.str() );
- }
- }
-
- /*static*/
- string Database::duplicateUncasedName( bool inholderlock, const string &name, const string &path, set< string > *duplicates ) {
- Lock::assertAtLeastReadLocked(name);
-
- if ( duplicates ) {
- duplicates->clear();
- }
-
- vector<string> others;
- getDatabaseNames( others , path );
-
- set<string> allShortNames;
- dbHolder().getAllShortNames( allShortNames );
-
- others.insert( others.end(), allShortNames.begin(), allShortNames.end() );
-
- for ( unsigned i=0; i<others.size(); i++ ) {
-
- if ( strcasecmp( others[i].c_str() , name.c_str() ) )
- continue;
-
- if ( strcmp( others[i].c_str() , name.c_str() ) == 0 )
- continue;
-
- if ( duplicates ) {
- duplicates->insert( others[i] );
- } else {
- return others[i];
- }
- }
- if ( duplicates ) {
- return duplicates->empty() ? "" : *duplicates->begin();
- }
- return "";
- }
-
- boost::filesystem::path Database::fileName( int n ) const {
- stringstream ss;
- ss << name << '.' << n;
- boost::filesystem::path fullName;
- fullName = boost::filesystem::path(path);
- if ( directoryperdb )
- fullName /= name;
- fullName /= ss.str();
- return fullName;
- }
-
- bool Database::openExistingFile( int n ) {
- verify(this);
- Lock::assertWriteLocked(name);
- {
- // must not yet be visible to others as we aren't in the db's write lock and
- // we will write to _files vector - thus this assert.
- bool loaded = dbHolder().__isLoaded(name, path);
- verify( !loaded );
- }
- // additionally must be in the dbholder mutex (no assert for that yet)
-
- // todo: why here? that could be bad as we may be read locked only here
- namespaceIndex.init();
-
- if ( n < 0 || n >= DiskLoc::MaxFiles ) {
- massert( 15924 , str::stream() << "getFile(): bad file number value " << n << " (corrupt db?): run repair", false);
- }
-
- {
- if( n < (int) _files.size() && _files[n] ) {
- dlog(2) << "openExistingFile " << n << " is already open" << endl;
- return true;
- }
- }
-
- {
- boost::filesystem::path fullName = fileName( n );
- string fullNameString = fullName.string();
- MongoDataFile *df = new MongoDataFile(n);
- try {
- if( !df->openExisting( fullNameString.c_str() ) ) {
- delete df;
- return false;
- }
- }
- catch ( AssertionException& ) {
- delete df;
- throw;
- }
- while ( n >= (int) _files.size() ) {
- _files.push_back(0);
- }
- _files[n] = df;
- }
-
- return true;
- }
-
- // todo : we stop once a datafile dne.
- // if one datafile were missing we should keep going for
- // repair purposes yet we do not.
- void Database::openAllFiles() {
- verify(this);
- int n = 0;
- while( openExistingFile(n) ) {
- n++;
- }
- }
-
- void Database::clearTmpCollections() {
-
- Lock::assertWriteLocked( name );
- Client::Context ctx( name );
-
- string systemNamespaces = name + ".system.namespaces";
-
- // Note: we build up a toDelete vector rather than dropping the collection inside the loop
- // to avoid modifying the system.namespaces collection while iterating over it since that
- // would corrupt the cursor.
- vector<string> toDelete;
- shared_ptr<Cursor> cursor = theDataFileMgr.findAll(systemNamespaces);
- while ( cursor && cursor->ok() ) {
- BSONObj nsObj = cursor->current();
- cursor->advance();
-
- BSONElement e = nsObj.getFieldDotted( "options.temp" );
- if ( !e.trueValue() )
- continue;
-
- string ns = nsObj["name"].String();
-
- // Do not attempt to drop indexes
- if ( !NamespaceString::normal(ns.c_str()) )
- continue;
-
- toDelete.push_back(ns);
- }
-
- for (size_t i=0; i < toDelete.size(); i++) {
- const string& ns = toDelete[i];
-
- string errmsg;
- BSONObjBuilder result;
- dropCollection(ns, errmsg, result);
-
- if ( errmsg.size() > 0 ) {
- warning() << "could not delete temp collection: " << ns
- << " because of: " << errmsg << endl;
- }
- }
- }
-
- // todo: this is called a lot. streamline the common case
- MongoDataFile* Database::getFile( int n, int sizeNeeded , bool preallocateOnly) {
- verify(this);
- DEV assertDbAtLeastReadLocked(this);
-
- namespaceIndex.init();
- if ( n < 0 || n >= DiskLoc::MaxFiles ) {
- out() << "getFile(): n=" << n << endl;
- massert( 10295 , "getFile(): bad file number value (corrupt db?): run repair", false);
- }
- DEV {
- if ( n > 100 ) {
- out() << "getFile(): n=" << n << endl;
- }
- }
- MongoDataFile* p = 0;
- if ( !preallocateOnly ) {
- while ( n >= (int) _files.size() ) {
- verify(this);
- if( !Lock::isWriteLocked(this->name) ) {
- log() << "error: getFile() called in a read lock, yet file to return is not yet open" << endl;
- log() << " getFile(" << n << ") _files.size:" <<_files.size() << ' ' << fileName(n).string() << endl;
- log() << " context ns: " << cc().ns() << endl;
- verify(false);
- }
- _files.push_back(0);
- }
- p = _files[n];
- }
- if ( p == 0 ) {
- assertDbWriteLocked(this);
- boost::filesystem::path fullName = fileName( n );
- string fullNameString = fullName.string();
- p = new MongoDataFile(n);
- int minSize = 0;
- if ( n != 0 && _files[ n - 1 ] )
- minSize = _files[ n - 1 ]->getHeader()->fileLength;
- if ( sizeNeeded + DataFileHeader::HeaderSize > minSize )
- minSize = sizeNeeded + DataFileHeader::HeaderSize;
- try {
- p->open( fullNameString.c_str(), minSize, preallocateOnly );
- }
- catch ( AssertionException& ) {
- delete p;
- throw;
- }
- if ( preallocateOnly )
- delete p;
- else
- _files[n] = p;
- }
- return preallocateOnly ? 0 : p;
- }
-
- MongoDataFile* Database::addAFile( int sizeNeeded, bool preallocateNextFile ) {
- assertDbWriteLocked(this);
- int n = (int) _files.size();
- MongoDataFile *ret = getFile( n, sizeNeeded );
- if ( preallocateNextFile )
- preallocateAFile();
- return ret;
- }
-
- bool fileIndexExceedsQuota( const char *ns, int fileIndex, bool enforceQuota ) {
- return
- cmdLine.quota &&
- enforceQuota &&
- fileIndex >= cmdLine.quotaFiles &&
- // we don't enforce the quota on "special" namespaces as that could lead to problems -- e.g.
- // rejecting an index insert after inserting the main record.
- !NamespaceString::special( ns ) &&
- NamespaceString( ns ).db != "local";
- }
-
- MongoDataFile* Database::suitableFile( const char *ns, int sizeNeeded, bool preallocate, bool enforceQuota ) {
-
- // check existing files
- for ( int i=numFiles()-1; i>=0; i-- ) {
- MongoDataFile* f = getFile( i );
- if ( f->getHeader()->unusedLength >= sizeNeeded ) {
- if ( fileIndexExceedsQuota( ns, i-1, enforceQuota ) ) // NOTE i-1 is the value used historically for this check.
- ;
- else
- return f;
- }
- }
-
- if ( fileIndexExceedsQuota( ns, numFiles(), enforceQuota ) ) {
- if ( cc().hasWrittenThisPass() ) {
- warning() << "quota exceeded, but can't assert, probably going over quota for: " << ns << endl;
- }
- else {
- uasserted(12501, "quota exceeded");
- }
- }
-
- // allocate files until we either get one big enough or hit maxSize
- for ( int i = 0; i < 8; i++ ) {
- MongoDataFile* f = addAFile( sizeNeeded, preallocate );
-
- if ( f->getHeader()->unusedLength >= sizeNeeded )
- return f;
-
- if ( f->getHeader()->fileLength >= MongoDataFile::maxSize() ) // this is as big as they get so might as well stop
- return f;
- }
-
- uasserted(14810, "couldn't allocate space (suitableFile)"); // callers don't check for null return code
- return 0;
- }
-
- MongoDataFile* Database::newestFile() {
- int n = numFiles();
- if ( n == 0 )
- return 0;
- return getFile(n-1);
- }
-
-
- Extent* Database::allocExtent( const char *ns, int size, bool capped, bool enforceQuota ) {
- // todo: when profiling, these may be worth logging into profile collection
- bool fromFreeList = true;
- Extent *e = DataFileMgr::allocFromFreeList( ns, size, capped );
- if( e == 0 ) {
- fromFreeList = false;
- e = suitableFile( ns, size, !capped, enforceQuota )->createExtent( ns, size, capped );
- }
- LOG(1) << "allocExtent " << ns << " size " << size << ' ' << fromFreeList << endl;
- return e;
- }
-
-
- bool Database::setProfilingLevel( int newLevel , string& errmsg ) {
- if ( _profile == newLevel )
- return true;
-
- if ( newLevel < 0 || newLevel > 2 ) {
- errmsg = "profiling level has to be >=0 and <= 2";
- return false;
- }
-
- if ( newLevel == 0 ) {
- _profile = 0;
- return true;
- }
-
- verify( cc().database() == this );
-
- if (!getOrCreateProfileCollection(this, true, &errmsg))
- return false;
-
- _profile = newLevel;
- return true;
- }
-
- bool Database::exists(int n) const {
- return boost::filesystem::exists( fileName( n ) );
- }
-
- int Database::numFiles() const {
- DEV assertDbAtLeastReadLocked(this);
- return (int) _files.size();
- }
-
- void Database::flushFiles( bool sync ) {
- assertDbAtLeastReadLocked(this);
- for( vector<MongoDataFile*>::iterator i = _files.begin(); i != _files.end(); i++ ) {
- MongoDataFile *f = *i;
- f->flush(sync);
- }
- }
-
- long long Database::fileSize() const {
- long long size=0;
- for (int n=0; exists(n); n++)
- size += boost::filesystem::file_size( fileName(n) );
- return size;
- }
-
- Database* DatabaseHolder::getOrCreate( const string& ns , const string& path , bool& justCreated ) {
- string dbname = _todb( ns );
- {
- SimpleMutex::scoped_lock lk(_m);
- Lock::assertAtLeastReadLocked(ns);
- DBs& m = _paths[path];
- {
- DBs::iterator i = m.find(dbname);
- if( i != m.end() ) {
- justCreated = false;
- return i->second;
- }
- }
-
- // todo: protect against getting sprayed with requests for different db names that DNE -
- // that would make the DBs map very large. not clear what to do to handle though,
- // perhaps just log it, which is what we do here with the "> 40" :
- bool cant = !Lock::isWriteLocked(ns);
- if( logLevel >= 1 || m.size() > 40 || cant || DEBUG_BUILD ) {
- log() << "opening db: " << (path==dbpath?"":path) << ' ' << dbname << endl;
- }
- massert(15927, "can't open database in a read lock. if db was just closed, consider retrying the query. might otherwise indicate an internal error", !cant);
- }
-
- // we mark our thread as having done writes now as we do not want any exceptions
- // once we start creating a new database
- cc().writeHappened();
-
- // this locks _m for defensive checks, so we don't want to be locked right here :
- Database *db = new Database( dbname.c_str() , justCreated , path );
-
- {
- SimpleMutex::scoped_lock lk(_m);
- DBs& m = _paths[path];
- verify( m[dbname] == 0 );
- m[dbname] = db;
- _size++;
- }
-
- authindex::configureSystemIndexes(dbname);
-
- db->clearTmpCollections();
-
- return db;
- }
-
-} // namespace mongo
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