Module with a global view on all currently stored DHT records (used by DHTTestApp). More...

#include <GlobalDhtTestMap.h>

Public Member Functions
	GlobalDhtTestMap ()
	~GlobalDhtTestMap ()
void	insertEntry (const OverlayKey &key, const DHTEntry &entry)
const DHTEntry *	findEntry (const OverlayKey &key)
void	eraseEntry (const OverlayKey &key)
const OverlayKey &	getRandomKey ()
size_t	size ()
Public Attributes
uint32_t	p2pnsNameCount
Private Member Functions
void	initialize ()
void	handleMessage (cMessage *msg)
void	finish ()
Private Attributes
GlobalStatistics *	globalStatistics
	pointer to GlobalStatistics module in this node
std::map< OverlayKey, DHTEntry >	dataMap
	The map contains all currently stored DHT records.
cMessage *	periodicTimer
	timer self-message for writing periodic statistical information
Static Private Attributes
static const int	TEST_MAP_INTERVAL = 10
	interval in seconds for writing periodic statistical information

Detailed Description

Module with a global view on all currently stored DHT records (used by DHTTestApp).

Author:: Ingmar Baumgart

Definition at line 49 of file GlobalDhtTestMap.h.

Constructor & Destructor Documentation

GlobalDhtTestMap::GlobalDhtTestMap ( )

Definition at line 42 of file GlobalDhtTestMap.cc.

{
    periodicTimer = NULL;
}

GlobalDhtTestMap::~GlobalDhtTestMap ( )

Definition at line 47 of file GlobalDhtTestMap.cc.

{
    cancelAndDelete(periodicTimer);
    dataMap.clear();
}

Member Function Documentation

void GlobalDhtTestMap::eraseEntry ( const OverlayKey & key )

Definition at line 99 of file GlobalDhtTestMap.cc.

Referenced by DHTTestApp::handleGetResponse().

{
    dataMap.erase(key);
}

const DHTEntry * GlobalDhtTestMap::findEntry ( const OverlayKey & key )

Definition at line 104 of file GlobalDhtTestMap.cc.

Referenced by DHTTestApp::handleGetResponse().

{
    std::map<OverlayKey, DHTEntry>::iterator it = dataMap.find(key);

    if (it == dataMap.end()) {
        return NULL;
    } else {
        return &(it->second);
    }
}

void GlobalDhtTestMap::finish ( ) [private]

Definition at line 64 of file GlobalDhtTestMap.cc.

{
}

const OverlayKey & GlobalDhtTestMap::getRandomKey ( )

Definition at line 115 of file GlobalDhtTestMap.cc.

Referenced by DHTTestApp::handleTimerEvent().

{
    if (dataMap.size() == 0) {
        return OverlayKey::UNSPECIFIED_KEY;
    }

    // return random OverlayKey in O(log n)
    std::map<OverlayKey, DHTEntry>::iterator it = dataMap.end();
    DHTEntry tempEntry = {BinaryValue::UNSPECIFIED_VALUE, 0};

    OverlayKey randomKey = OverlayKey::random();
    it = dataMap.find(randomKey);

    if (it == dataMap.end()) {
        it = dataMap.insert(make_pair(randomKey, tempEntry)).first;
        dataMap.erase(it++);
    }

    if (it == dataMap.end()) {
        it = dataMap.begin();
    }

    return it->first;
}

void GlobalDhtTestMap::handleMessage ( cMessage * msg ) [private]

Definition at line 68 of file GlobalDhtTestMap.cc.

{
    //cleanupDataMap();
    DhtTestEntryTimer *entryTimer = NULL;

    if (msg == periodicTimer) {
        RECORD_STATS(globalStatistics->recordOutVector(
           "GlobalDhtTestMap: Number of stored DHT entries", dataMap.size()));
        scheduleAt(simTime() + TEST_MAP_INTERVAL, msg);
    } else if ((entryTimer = dynamic_cast<DhtTestEntryTimer*>(msg)) != NULL) {
        dataMap.erase(entryTimer->getKey());
        delete msg;
    } else {
        throw cRuntimeError("GlobalDhtTestMap::handleMessage(): "
                                "Unknown message type!");
    }
}

void GlobalDhtTestMap::initialize ( ) [private]

Definition at line 53 of file GlobalDhtTestMap.cc.

{
    p2pnsNameCount = 0;
    globalStatistics = GlobalStatisticsAccess().get();
    WATCH_MAP(dataMap);

    periodicTimer = new cMessage("dhtTestMapTimer");

    scheduleAt(simTime(), periodicTimer);
}

void GlobalDhtTestMap::insertEntry	(	const OverlayKey &	key,
		const DHTEntry &	entry
	)

Definition at line 86 of file GlobalDhtTestMap.cc.

Referenced by DHTTestApp::handlePutResponse().

{
    Enter_Method_Silent();

    dataMap.erase(key);
    dataMap.insert(make_pair(key, entry));

    DhtTestEntryTimer* msg = new DhtTestEntryTimer("dhtEntryTimer");
    msg->setKey(key);

    scheduleAt(entry.endtime, msg);
}