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Make parameters of NegativeLookupCache configurable

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This commit is contained in:
zab2
2015-11-07 02:56:59 +00:00
parent 9f0f1f5ec8
commit c901010d96
2 changed files with 9 additions and 5 deletions
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2
router/java/src/net/i2p/router/networkdb/kademlia/KademliaNetworkDatabaseFacade.java
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@@ -274,7 +274,7 @@ public class KademliaNetworkDatabaseFacade extends NetworkDatabaseFacade {
//_ds = new TransientDataStore();
// _exploreKeys = new HashSet(64);
_dbDir = dbDir;
_negativeCache = new NegativeLookupCache();
_negativeCache = new NegativeLookupCache(_context);
createHandlers();

12
router/java/src/net/i2p/router/networkdb/kademlia/NegativeLookupCache.java
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@@ -4,6 +4,7 @@ import java.util.Map;
import net.i2p.data.Destination;
import net.i2p.data.Hash;
import net.i2p.router.RouterContext;
import net.i2p.util.LHMCache;
import net.i2p.util.ObjectCounter;
import net.i2p.util.SimpleTimer;
@@ -17,15 +18,18 @@ import net.i2p.util.SimpleTimer2;
class NegativeLookupCache {
private final ObjectCounter<Hash> counter;
private final Map<Hash, Destination> badDests;
private final int _maxFails;
private static final int MAX_FAILS = 3;
private static final int MAX_BAD_DESTS = 128;
private static final long CLEAN_TIME = 2*60*1000;
public NegativeLookupCache() {
public NegativeLookupCache(RouterContext context) {
this.counter = new ObjectCounter<Hash>();
this.badDests = new LHMCache<Hash, Destination>(MAX_BAD_DESTS);
SimpleTimer2.getInstance().addPeriodicEvent(new Cleaner(), CLEAN_TIME);
this._maxFails = context.getProperty("netdb.negativeCache.maxFails",MAX_FAILS);
final long cleanTime = context.getProperty("netdb.negativeCache.cleanupInterval", CLEAN_TIME);
SimpleTimer2.getInstance().addPeriodicEvent(new Cleaner(), cleanTime);
}
public void lookupFailed(Hash h) {
@@ -33,7 +37,7 @@ class NegativeLookupCache {
}
public boolean isCached(Hash h) {
if (counter.count(h) >= MAX_FAILS)
if (counter.count(h) >= _maxFails)
return true;
synchronized(badDests) {
return badDests.get(h) != null;