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// instance.h : Global state functions.
//
/**
* 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/>.
*/
#pragma once
#include "../client/dbclient.h"
#include "curop.h"
#include "security.h"
#include "cmdline.h"
#include "client.h"
namespace mongo {
extern string dbExecCommand;
#define OPWRITE if( _diaglog.level & 1 ) _diaglog.write((char *) m.data, m.data->len);
#define OPREAD if( _diaglog.level & 2 ) _diaglog.readop((char *) m.data, m.data->len);
struct DiagLog {
ofstream *f;
/* 0 = off; 1 = writes, 2 = reads, 3 = both
7 = log a few reads, and all writes.
*/
int level;
DiagLog() : f(0) , level(0) { }
void init() {
if ( ! f && level ){
log() << "diagLogging = " << level << endl;
stringstream ss;
ss << "diaglog." << hex << time(0);
string name = ss.str();
f = new ofstream(name.c_str(), ios::out | ios::binary);
if ( ! f->good() ) {
problem() << "couldn't open log stream" << endl;
throw 1717;
}
}
}
/**
* @return old
*/
int setLevel( int newLevel ){
int old = level;
level = newLevel;
init();
return old;
}
void flush() {
if ( level ) f->flush();
}
void write(char *data,int len) {
if ( level & 1 ) f->write(data,len);
}
void readop(char *data, int len) {
if ( level & 2 ) {
bool log = (level & 4) == 0;
OCCASIONALLY log = true;
if ( log )
f->write(data,len);
}
}
};
extern DiagLog _diaglog;
/* we defer response until we unlock. don't want a blocked socket to
keep things locked.
*/
struct DbResponse {
Message *response;
MSGID responseTo;
DbResponse(Message *r, MSGID rt) : response(r), responseTo(rt) {
}
DbResponse() {
response = 0;
}
~DbResponse() {
delete response;
}
};
static SockAddr unknownAddress( "0.0.0.0", 0 );
bool assembleResponse( Message &m, DbResponse &dbresponse, const sockaddr_in &client = unknownAddress.sa );
void receivedKillCursors(Message& m);
void receivedUpdate(Message& m, stringstream& ss);
void receivedDelete(Message& m, stringstream& ss);
void receivedInsert(Message& m, stringstream& ss);
void receivedGetMore(DbResponse& dbresponse, /*AbstractMessagingPort& dbMsgPort, */Message& m, stringstream& ss);
void receivedQuery(DbResponse& dbresponse, /*AbstractMessagingPort& dbMsgPort, */Message& m, stringstream& ss, bool logit);
void getDatabaseNames( vector< string > &names );
// must call with db lock
void registerListenerSocket( int socket );
// --- local client ---
class DBDirectClient : public DBClientBase {
virtual bool isFailed() const {
return false;
}
virtual string toString() {
return "DBDirectClient";
}
virtual string getServerAddress() const{
return "localhost"; // TODO: should this have the port?
}
virtual bool call( Message &toSend, Message &response, bool assertOk=true );
virtual void say( Message &toSend );
virtual void sayPiggyBack( Message &toSend ) {
// don't need to piggy back when connected locally
return say( toSend );
}
class AlwaysAuthorized : public AuthenticationInfo {
virtual bool isAuthorized( const char *dbname ) {
return true;
}
};
/* TODO: this looks bad that auth is set to always. is that really always safe? */
class SavedContext {
public:
SavedContext() {
dblock lk;
Client *c = currentClient.get();
if ( c->database() )
oldName = c->database()->name;
oldAuth = c->ai;
// careful, don't want to free this:
c->ai = &always;
}
~SavedContext() {
Client *c = currentClient.get();
c->ai = oldAuth;
if ( !oldName.empty() ) {
dblock lk;
setClient( oldName.c_str() );
}
}
private:
static AlwaysAuthorized always;
AuthenticationInfo *oldAuth;
string oldName;
};
};
extern int lockFile;
void acquirePathLock();
} // namespace mongo
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