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651 lines
21 KiB
C++
651 lines
21 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/******************************************************************************
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* $Id$
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*
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*****************************************************************************/
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/** @file umsocketselector.cpp
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* Used to iterate through available socket/port connections for a given UM,
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* when sending response messages back to the UM.
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*/
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#include "umsocketselector.h"
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#ifdef _MSC_VER
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#define WIN32_LEAN_AND_MEAN
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#define NOMINMAX
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#include <windows.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <stdio.h>
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#else
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#endif
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#include <iostream>
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#include <climits>
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#include <sstream>
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#include <cstring>
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#include <limits>
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#include "liboamcpp.h"
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using namespace oam;
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//#define NDEBUG
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#include <cassert>
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//#define LOAD_MODULE_DEBUG 1
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//#define MOD_CONN_DEBUG 1
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//#define SEL_CONN_DEBUG 1
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namespace primitiveprocessor
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{
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/*static*/ const int32_t UmIPSocketConns::NEXT_IOSOCKET_UNASSIGNED = -1;
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/*static*/ const int32_t UmModuleIPs::NEXT_IP_SOCKET_UNASSIGNED = -1;
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/*static*/ UmSocketSelector* UmSocketSelector::fpUmSocketSelector = 0;
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//------------------------------------------------------------------------------
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// UmSocketSelector methods
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//------------------------------------------------------------------------------
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// UmSocketSelector Singleton accessor
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//------------------------------------------------------------------------------
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/* static */ UmSocketSelector*
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UmSocketSelector::instance()
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{
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if (fpUmSocketSelector == 0)
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{
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fpUmSocketSelector = new UmSocketSelector();
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}
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return fpUmSocketSelector;
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}
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//------------------------------------------------------------------------------
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// UmSocketSelector constructor
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//------------------------------------------------------------------------------
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UmSocketSelector::UmSocketSelector()
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{
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loadUMModuleInfo();
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}
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//------------------------------------------------------------------------------
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// Returns the number of IP addresses defined in the Columnstore.xml file
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// return - uint32_t; the total number of IP addresses in the Columnstore.xml file
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//------------------------------------------------------------------------------
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uint32_t
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UmSocketSelector::ipAddressCount() const
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{
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uint32_t ipCount = 0;
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for (unsigned int i=0; i<fUmModuleIPs.size(); ++i)
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{
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ipCount += fUmModuleIPs[i]->ipAddressCount();
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}
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return ipCount;
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}
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//------------------------------------------------------------------------------
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// Loads the UM module information from the Columnstore.xml file, so that we have
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// the list of IP addresses that are valid for each UM. Note that this method
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// does not insure thread safeness, but that's okay because it is assumed that
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// it will only be called once from the first call to instance().
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//------------------------------------------------------------------------------
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void
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UmSocketSelector::loadUMModuleInfo()
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{
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Oam oam;
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ModuleTypeConfig moduleTypeConfig;
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const std::string UM_MODTYPE("um");
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oam.getSystemConfig(UM_MODTYPE, moduleTypeConfig);
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int moduleCount= moduleTypeConfig.ModuleCount;
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std::string moduleType = moduleTypeConfig.ModuleType;
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#ifdef LOAD_MODULE_DEBUG
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std::cout << "ModuleConfig for type: " << UM_MODTYPE << std::endl;
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std::cout << "ModuleDesc = " << moduleTypeConfig.ModuleDesc << std::endl;
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std::cout << "ModuleCount = " << moduleCount << std::endl;
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std::cout << "RunType = " << moduleTypeConfig.RunType << std::endl;
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#endif
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if ( moduleCount > 0 )
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{
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//..Loop through the list of UM modules
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for (DeviceNetworkList::iterator iter1 =
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moduleTypeConfig.ModuleNetworkList.begin();
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(iter1 != moduleTypeConfig.ModuleNetworkList.end());
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++iter1)
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{
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std::string moduleName = iter1->DeviceName;
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#ifdef LOAD_MODULE_DEBUG
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std::cout << "ModuleName-" << moduleName << std::endl;
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#endif
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//..Assign the UM index based on whether it is a new UM or one
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// we have seen before
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unsigned int umIdx = findOrAddUm( moduleName );
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//..Get the list of IP addresses (NIC's) for this UM module
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for (HostConfigList::iterator iter2 = iter1->hostConfigList.begin();
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(iter2 != iter1->hostConfigList.end());
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++iter2)
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{
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std::string ipAddr = iter2->IPAddr;
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#ifdef LOAD_MODULE_DEBUG
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std::cout << " NIC-" << iter2->NicID <<
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"; host-" << iter2->HostName <<
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"; IP-" << ipAddr << std::endl;
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#endif
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struct in_addr ip;
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if ( inet_aton(ipAddr.c_str(), &ip ) )
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{
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fIpAddressUmMap[ ip.s_addr ] = umIdx;
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fUmModuleIPs[umIdx]->addIP( ip.s_addr );
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}
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else
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{
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std::cerr << "Invalid IP address in SystemModuleConfig "
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"section: " << ipAddr << std::endl;
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}
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} // loop through the IP addresses for a UM module
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} // loop through the list of UM modules
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} // moduleCount > 0
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}
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//------------------------------------------------------------------------------
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// Search for the specified moduleName, and return the applicable index from
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// fUmModuleIPs, if it is found. Else add the new moduleName.
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// return - unsigned int for the index into fUmModuleIPs for moduleName.
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//------------------------------------------------------------------------------
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unsigned int
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UmSocketSelector::findOrAddUm( const std::string& moduleName )
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{
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unsigned int umIdx = std::numeric_limits<unsigned int>::max();
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for (unsigned int i=0; i<fUmModuleIPs.size(); ++i)
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{
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if (fUmModuleIPs[i]->moduleName() == moduleName)
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{
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umIdx = i;
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return umIdx;
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}
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}
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//..We have encountered a new UM module we should add to the list
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fUmModuleIPs.push_back( SP_UM_MODIPS(new UmModuleIPs(moduleName)) );
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umIdx = fUmModuleIPs.size() - 1;
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return umIdx;
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}
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//------------------------------------------------------------------------------
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// Add a new socket/port connection. It will be grouped with other
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// socket/port connections belonging to the same UM.
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// ios (in) - socket/port connection to be added
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// writeLock (in) - mutex to use when writing to ios.
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// return - boolean indicating whether socket/port connection was added.
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//------------------------------------------------------------------------------
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bool
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UmSocketSelector::addConnection(
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const SP_UM_IOSOCK& ios,
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const SP_UM_MUTEX& writeLock )
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{
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bool bConnAdded = false;
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sockaddr sa = ios->sa();
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const sockaddr_in* sinp = reinterpret_cast<const sockaddr_in*>(&sa);
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IpAddressUmMap_t::iterator mapIter =
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fIpAddressUmMap.find ( sinp->sin_addr.s_addr );
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// Add this socket/port connection to the UM connection list it belongs to.
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if ( mapIter != fIpAddressUmMap.end() )
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{
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unsigned int umIdx = mapIter->second;
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bConnAdded = fUmModuleIPs[umIdx]->addSocketConn( ios, writeLock );
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}
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if (!bConnAdded)
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{
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#ifdef SEL_CONN_DEBUG
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std::ostringstream oss;
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oss << "No UM/IP match found to add connection " << ios->toString() <<
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std::endl;
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std::cout << oss.str();
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#endif
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}
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return bConnAdded;
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}
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//------------------------------------------------------------------------------
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// Delete a socket/port connection from the UM for which it belongs.
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// ioSock (in) - socket/port connection to be deleted
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//------------------------------------------------------------------------------
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void
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UmSocketSelector::delConnection( const IOSocket& ios )
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{
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sockaddr sa = ios.sa();
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const sockaddr_in* sinp = reinterpret_cast<const sockaddr_in*>(&sa);
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IpAddressUmMap_t::iterator mapIter =
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fIpAddressUmMap.find ( sinp->sin_addr.s_addr );
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if ( mapIter != fIpAddressUmMap.end() )
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{
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unsigned int umIdx = mapIter->second;
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fUmModuleIPs[umIdx]->delSocketConn( ios );
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}
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}
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//------------------------------------------------------------------------------
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// Get the next socket/port connection belonging to the same UM as ios.
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// The selected socket/port connection will be returned in outIos. It can
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// then be used for sending the next response message back to the applicable
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// UM module.
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// ios (in) - socket/port connection where a UM request originated from
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// outIos (out) - socket/port connection to use in sending the
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// corresponding response
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// writelock (out) - mutex lock to be used when writing to outIos
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// return - bool indicating if socket/port connection was assigned to
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// outIos
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//------------------------------------------------------------------------------
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bool
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UmSocketSelector::nextIOSocket(
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const IOSocket& ios,
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SP_UM_IOSOCK& outIos,
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SP_UM_MUTEX& writeLock )
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{
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sockaddr sa = ios.sa();
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const sockaddr_in* sinp = reinterpret_cast<const sockaddr_in*>(&sa);
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IpAddressUmMap_t::iterator mapIter =
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fIpAddressUmMap.find ( sinp->sin_addr.s_addr );
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if ( mapIter != fIpAddressUmMap.end() )
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{
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unsigned int umIdx = mapIter->second;
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if (fUmModuleIPs[umIdx]->nextIOSocket( outIos, writeLock ))
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{
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#ifdef SEL_CONN_DEBUG
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std::ostringstream oss;
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oss << "UM " << fUmModuleIPs[umIdx]->moduleName() <<
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"; in: " << ios.toString() <<
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"; selected out: " << outIos->toString() << std::endl;
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std::cout << oss.str();
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#endif
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return true;
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}
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}
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//..This should not happen. Application is asking for next socket/port for
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// a connection not in our UM module list.
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return false;
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}
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//------------------------------------------------------------------------------
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// Convert contents to string for logging, debugging, etc.
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//------------------------------------------------------------------------------
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const std::string
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UmSocketSelector::toString() const
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{
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std::ostringstream oss;
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oss << "IP Address to UM index map:" << std::endl;
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for (IpAddressUmMap_t::const_iterator mapIter = fIpAddressUmMap.begin();
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(mapIter != fIpAddressUmMap.end());
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++mapIter)
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{
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char ipString[INET_ADDRSTRLEN];
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oss << " IPAddress: " <<
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UmIPSocketConns::nwToString(mapIter->first, ipString) <<
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" maps to UM: " << mapIter->second << std::endl;
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}
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for (unsigned int i=0; i<fUmModuleIPs.size(); ++i)
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{
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oss << std::endl << fUmModuleIPs[i]->toString();
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}
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return oss.str();
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}
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//------------------------------------------------------------------------------
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// UmModuleIPs methods
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//------------------------------------------------------------------------------
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// Add an IP address to be associated with this UM module.
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// ip (in) - IP address to associate with this UM module (in network byte order)
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//------------------------------------------------------------------------------
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void
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UmModuleIPs::addIP( in_addr_t ip )
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{
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boost::mutex::scoped_lock lock( fUmModuleMutex );
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#ifdef MOD_CONN_DEBUG
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std::ostringstream oss;
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char ipString[INET_ADDRSTRLEN];
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oss << " UM " << fUmModuleName << "; adding IP: " <<
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UmIPSocketConns::nwToString(ip,ipString) << std::endl;
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std::cout << oss.str();
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#endif
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fUmIPSocketConns.push_back( SP_UM_IPCONNS(new UmIPSocketConns(ip)) );
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}
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//------------------------------------------------------------------------------
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// Add a new socket/port connection to this UM. It will be grouped with other
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// socket/port connections having the same IP address for this UM.
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// ioSock (in) - socket/port connection to be added
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// writeLock (in) - mutex to use when writing to ioSock.
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// return - boolean indicating whether socket/port connection was added.
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//------------------------------------------------------------------------------
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bool
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UmModuleIPs::addSocketConn(
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const SP_UM_IOSOCK& ioSock,
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const SP_UM_MUTEX& writeLock )
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{
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bool bConnAdded = false;
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boost::mutex::scoped_lock lock( fUmModuleMutex );
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for (unsigned int i=0; i<fUmIPSocketConns.size(); ++i)
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{
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sockaddr sa = ioSock->sa();
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const sockaddr_in* sinp = reinterpret_cast<const sockaddr_in*>(&sa);
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if (fUmIPSocketConns[i]->ipAddress() == sinp->sin_addr.s_addr)
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{
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#ifdef MOD_CONN_DEBUG
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std::ostringstream oss;
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oss << "UM " << fUmModuleName << "; adding connection " <<
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ioSock->toString() << std::endl;
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std::cout << oss.str();
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#endif
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fUmIPSocketConns[i]->addSocketConn ( ioSock, writeLock );
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bConnAdded = true;
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//..Initialize fNextUmIPSocketIdx if this is the first socket/port
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// connection for this UM.
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if ( fNextUmIPSocketIdx == NEXT_IP_SOCKET_UNASSIGNED)
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fNextUmIPSocketIdx = i;
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break;
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}
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}
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return bConnAdded;
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}
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//------------------------------------------------------------------------------
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// Delete a socket/port connection from this UM.
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// ioSock (in) - socket/port connection to be deleted
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//------------------------------------------------------------------------------
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void
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UmModuleIPs::delSocketConn( const IOSocket& ioSock )
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{
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boost::mutex::scoped_lock lock( fUmModuleMutex );
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for (unsigned int i=0; i<fUmIPSocketConns.size(); ++i)
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{
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sockaddr sa = ioSock.sa();
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const sockaddr_in* sinp = reinterpret_cast<const sockaddr_in*>(&sa);
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if (fUmIPSocketConns[i]->ipAddress() == sinp->sin_addr.s_addr)
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{
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#ifdef MOD_CONN_DEBUG
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std::ostringstream oss;
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oss << "UM " << fUmModuleName << "; deleting connection "<<
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ioSock.toString() << std::endl;
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std::cout << oss.str();
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#endif
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fUmIPSocketConns[i]->delSocketConn ( ioSock );
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//..If we just deleted the last connection for this IP, then ad-
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// vance fNextUmIPSocketIdx to an IP address having connections.
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if (fUmIPSocketConns[i]->count() == 0)
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{
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advanceToNextIP();
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}
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break;
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}
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}
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}
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//------------------------------------------------------------------------------
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// Get the next socket/port connection for this UM to use in sending a message
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// to the applicable UM module.
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// outIos (out) - socket/port connection to use in sending next msg
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// writelock (out) - mutex lock to be used when writing to outIos
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// return - bool indicating if socket/port connection was assigned to
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// outIos
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//------------------------------------------------------------------------------
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bool
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UmModuleIPs::nextIOSocket( SP_UM_IOSOCK& outIos, SP_UM_MUTEX& writeLock )
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{
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bool found = false;
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boost::mutex::scoped_lock lock( fUmModuleMutex );
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if ((fUmIPSocketConns.size() > 0) &&
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(fNextUmIPSocketIdx != NEXT_IP_SOCKET_UNASSIGNED))
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{
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assert (fNextUmIPSocketIdx < static_cast<int>(fUmIPSocketConns.size()));
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fUmIPSocketConns[fNextUmIPSocketIdx]->nextIOSocket( outIos, writeLock );
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advanceToNextIP();
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found = true;
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}
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return found;
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}
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//------------------------------------------------------------------------------
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// Advance to the "next" available IP (for this UM), skipping over
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// any IP's that have 0 socket/port connections. No mutex locking done, as
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// the calling methods will have already locked a mutex.
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//------------------------------------------------------------------------------
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void
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UmModuleIPs::advanceToNextIP()
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{
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if ( fUmIPSocketConns.size() > 1 )
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{
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//..Search to end of IP list for an IP having 1 or more connections
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for (int i=fNextUmIPSocketIdx+1;
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i<static_cast<int>(fUmIPSocketConns.size());
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++i)
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{
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if (fUmIPSocketConns[i]->count() > 0)
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{
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fNextUmIPSocketIdx = i;
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return;
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}
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}
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//..Wrap back around to the start of the list, to continue the search
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for (int i=0; i<fNextUmIPSocketIdx; ++i)
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{
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if (fUmIPSocketConns[i]->count() > 0)
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{
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fNextUmIPSocketIdx = i;
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return;
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}
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}
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fNextUmIPSocketIdx = NEXT_IP_SOCKET_UNASSIGNED;
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}
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else // special logic to handle 0 fUmIPSocketConns, or a single empty one
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{
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if ((fUmIPSocketConns.size() == 0) ||
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(fUmIPSocketConns[0]->count() == 0))
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{
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fNextUmIPSocketIdx = NEXT_IP_SOCKET_UNASSIGNED;
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}
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}
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}
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//------------------------------------------------------------------------------
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// Convert contents to string for logging, debugging, etc.
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//------------------------------------------------------------------------------
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const std::string
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UmModuleIPs::toString()
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{
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std::ostringstream oss;
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boost::mutex::scoped_lock lock( fUmModuleMutex );
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oss << "UM module name: " << fUmModuleName <<
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"; nextUmIPIdx: " << fNextUmIPSocketIdx << std::endl;
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for (unsigned int i=0; i<fUmIPSocketConns.size(); ++i)
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{
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oss << fUmIPSocketConns[i]->toString();
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}
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return oss.str();
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}
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//------------------------------------------------------------------------------
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// UmIPSocketConns methods
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//------------------------------------------------------------------------------
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// Add the specified socket/port to the connection list for the IP address
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// represented by this UmIPSocketConns object.
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// ioSock (in) - socket/port connection to be added
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// writeLock (in) - mutex to use when writing to ioSock
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
UmIPSocketConns::addSocketConn(
|
|
const SP_UM_IOSOCK& ioSock,
|
|
const SP_UM_MUTEX& writeLock )
|
|
{
|
|
UmIOSocketData sockData = {
|
|
SP_UM_IOSOCK(ioSock), SP_UM_MUTEX(writeLock) };
|
|
fIOSockets.push_back( sockData );
|
|
|
|
//..Initialize fNextIOSocketIdx when we add first connection
|
|
if (fIOSockets.size() == 1)
|
|
fNextIOSocketIdx = 0;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Delete the specified socket/port from the connection list for the IP address
|
|
// referenced by this UmIPSocketConns object.
|
|
// ioSock (in) - socket/port connection to be deleted
|
|
//
|
|
// Not normally a good thing to be using a std::vector if we are going to be
|
|
// deleting elements in the middle of the collection. Very inefficient.
|
|
// But this method won't be called often, and we are only dealing with a small
|
|
// collection. Plus we want to use a vector over a list, so that nextIOSocket()
|
|
// can benefit from quick random access.
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
UmIPSocketConns::delSocketConn( const IOSocket& ioSock )
|
|
{
|
|
for (unsigned int i=0; i<fIOSockets.size(); ++i)
|
|
{
|
|
sockaddr sa1 = fIOSockets[i].fSock->sa();
|
|
const sockaddr_in* sinp1 = reinterpret_cast<const sockaddr_in*>(&sa1);
|
|
sockaddr sa2 = ioSock.sa();
|
|
const sockaddr_in* sinp2 = reinterpret_cast<const sockaddr_in*>(&sa2);
|
|
if (sinp1->sin_port == sinp2->sin_port)
|
|
{
|
|
fIOSockets.erase ( fIOSockets.begin() + i );
|
|
|
|
//..Adjust fNextIOSocketIdx
|
|
// 1a. decrement if fNextIOSocketIdx is after deleted connection
|
|
// 1b. reset to start of vector if we deleted the last connection
|
|
// 2. reset fNextIOSocketIdx to -1 if we have no more connections
|
|
if (fIOSockets.size() > 0)
|
|
{
|
|
if (fNextIOSocketIdx > static_cast<int>(i))
|
|
fNextIOSocketIdx--;
|
|
|
|
if ( fNextIOSocketIdx >= static_cast<int>(fIOSockets.size()) )
|
|
fNextIOSocketIdx = 0;
|
|
}
|
|
else
|
|
{
|
|
fNextIOSocketIdx = NEXT_IOSOCKET_UNASSIGNED;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Get the next socket/port connection for this IP to use in sending a message
|
|
// to the applicable UM module.
|
|
// outIos (out) - socket/port connection to use in sending next msg
|
|
// writelock (out) - mutex lock to be used when writing to outIos
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
UmIPSocketConns::nextIOSocket ( SP_UM_IOSOCK& outIos, SP_UM_MUTEX& writeLock )
|
|
{
|
|
assert (fIOSockets.size() > 0);
|
|
assert (fNextIOSocketIdx != NEXT_IOSOCKET_UNASSIGNED);
|
|
assert (fNextIOSocketIdx < static_cast<int>(fIOSockets.size()));
|
|
|
|
outIos = fIOSockets[fNextIOSocketIdx].fSock;
|
|
writeLock = fIOSockets[fNextIOSocketIdx].fMutex;
|
|
|
|
//..Update "next" index, being sure to wrap around to the start
|
|
// whenever we reach the end of the vector.
|
|
fNextIOSocketIdx++;
|
|
if (fNextIOSocketIdx >= static_cast<int>(fIOSockets.size()))
|
|
fNextIOSocketIdx = 0;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Convert network byte ordered IP address to a string.
|
|
// return - char* is returned with the IP address string.
|
|
//------------------------------------------------------------------------------
|
|
/* static */ char*
|
|
UmIPSocketConns::nwToString( in_addr_t addr, char* ipString )
|
|
{
|
|
in_addr addrStruct = { addr };
|
|
#ifndef _MSC_VER
|
|
if (!inet_ntop(AF_INET, &addrStruct, ipString, INET_ADDRSTRLEN))
|
|
#endif
|
|
strcpy(ipString,"unknown");
|
|
|
|
return ipString;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Convert contents to string for logging, debugging, etc.
|
|
//------------------------------------------------------------------------------
|
|
const std::string
|
|
UmIPSocketConns::toString() const
|
|
{
|
|
std::ostringstream oss;
|
|
|
|
char ipString[INET_ADDRSTRLEN];
|
|
oss << " IPAddress: " << UmIPSocketConns::nwToString(fIpAddress,ipString)<<
|
|
"; nextIOSocketIdx: " << fNextIOSocketIdx << std::endl;
|
|
|
|
for (unsigned int i=0; i<fIOSockets.size(); ++i)
|
|
{
|
|
sockaddr sa = fIOSockets[i].fSock->sa();
|
|
const sockaddr_in* sinp = reinterpret_cast<const sockaddr_in*>(&sa);
|
|
oss << " port: " << ntohs(sinp->sin_port) <<
|
|
std::endl;
|
|
}
|
|
|
|
return oss.str();
|
|
}
|
|
|
|
} // end of primitiveprocessor namespace
|