/usr/include/mongo/s/client_info.h is in mongodb-dev 1:2.4.9-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | // @file s/client_info.h
/*
* Copyright (C) 2010 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 "mongo/pch.h"
#include "mongo/db/client_basic.h"
#include "mongo/s/chunk.h"
#include "mongo/s/writeback_listener.h"
#include "mongo/util/net/hostandport.h"
namespace mongo {
class AbstractMessagingPort;
/**
* holds information about a client connected to a mongos
* 1 per client socket
* currently implemented with a thread local
*/
class ClientInfo : public ClientBasic {
public:
ClientInfo(AbstractMessagingPort* messagingPort);
~ClientInfo();
/** new request on behalf of a client, adjusts internal state */
void newPeerRequest( const HostAndPort& peer );
/** new request not associated (yet or ever) with a client */
void newRequest();
/** client disconnected */
void disconnect();
bool hasRemote() const { return true; }
/**
* @return remote socket address of the client
*/
HostAndPort getRemote() const { return _remote; }
/**
* notes that this client use this shard
* keeps track of all shards accessed this request
*/
void addShard( const string& shard );
/**
* gets shards used on the previous request
*/
set<string> * getPrev() const { return _prev; };
/**
* gets all shards we've accessed since the last time we called clearSinceLastGetError
*/
const set<string>& sinceLastGetError() const { return _sinceLastGetError; }
/**
* clears list of shards we've talked to
*/
void clearSinceLastGetError() { _sinceLastGetError.clear(); }
/**
* resets the list of shards using to process the current request
*/
void clearCurrentShards(){ _cur->clear(); }
void disableForCommand();
/**
* calls getLastError
* resets shards since get last error
* @return if the command was ok or if there was an error
*/
bool getLastError( const string& dbName,
const BSONObj& options ,
BSONObjBuilder& result ,
string& errmsg,
bool fromWriteBackListener = false );
/** @return if its ok to auto split from this client */
bool autoSplitOk() const { return _autoSplitOk && Chunk::ShouldAutoSplit; }
void noAutoSplit() { _autoSplitOk = false; }
// Returns whether or not a ClientInfo for this thread has already been created and stored
// in _tlInfo.
static bool exists();
// Gets the ClientInfo object for this thread from _tlInfo. If no ClientInfo object exists
// yet for this thread, it creates one.
static ClientInfo * get(AbstractMessagingPort* messagingPort = NULL);
// Creates a ClientInfo and stores it in _tlInfo
static ClientInfo* create(AbstractMessagingPort* messagingPort);
private:
struct WBInfo {
WBInfo( const WriteBackListener::ConnectionIdent& c, OID o, bool fromLastOperation )
: ident( c ), id( o ), fromLastOperation( fromLastOperation ) {}
WriteBackListener::ConnectionIdent ident;
OID id;
bool fromLastOperation;
};
// for getLastError
void _addWriteBack( vector<WBInfo>& all , const BSONObj& o, bool fromLastOperation );
vector<BSONObj> _handleWriteBacks( const vector<WBInfo>& all , bool fromWriteBackListener );
int _id; // unique client id
HostAndPort _remote; // server:port of remote socket end
// we use _a and _b to store shards we've talked to on the current request and the previous
// we use 2 so we can flip for getLastError type operations
set<string> _a; // actual set for _cur or _prev
set<string> _b; // "
set<string> * _cur; // pointer to _a or _b depending on state
set<string> * _prev; // ""
set<string> _sinceLastGetError; // all shards accessed since last getLastError
int _lastAccess;
bool _autoSplitOk;
static boost::thread_specific_ptr<ClientInfo> _tlInfo;
};
}
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