Package net.i2p.router.networkdb.kademlia

Class FloodfillNetworkDatabaseFacade

java.lang.Object

net.i2p.router.NetworkDatabaseFacade

net.i2p.router.networkdb.kademlia.KademliaNetworkDatabaseFacade

net.i2p.router.networkdb.kademlia.FloodfillNetworkDatabaseFacade

All Implemented Interfaces:

Service

public class FloodfillNetworkDatabaseFacade
extends KademliaNetworkDatabaseFacade

The network database

Field Summary

Fields

Modifier and Type	Field	Description
static char	CAPABILITY_FLOODFILL
static int	MAX_TO_FLOOD	This is the flood redundancy.
protected static int	MIN_ACTIVE_PEERS	NTCP cons drop quickly but SSU takes a while, so it's prudent to keep this a little higher than 1 or 2.
(package private) static long	PUBLISH_TIMEOUT	This maybe could be shorter than RepublishLeaseSetJob.REPUBLISH_LEASESET_TIMEOUT, because we are sending direct, but unresponsive floodfills may take a while due to timeouts.

Fields inherited from class net.i2p.router.networkdb.kademlia.KademliaNetworkDatabaseFacade

_context, _log, _networkID, _peerSelector, DEFAULT_DB_DIR, DONT_FAIL_PERIOD, MAX_EXPLORE_QUEUE, MIN_REMAINING_ROUTERS, MIN_RESEED, PROP_DB_DIR, PUBLISH_JOB_DELAY

Constructor Summary

Constructors

Constructor	Description
FloodfillNetworkDatabaseFacade(RouterContext context)

Method Summary

Modifier and Type	Method	Description
(package private) void	complete(Hash key)	Must be called by the search job queued by search() on success or failure
protected void	createHandlers()	unused, see override
protected PeerSelector	createPeerSelector()
void	flood(DatabaseEntry ds)	Send to a subset of all floodfill peers.
boolean	floodConditional(DatabaseEntry ds)	If we are floodfill AND the key is not throttled, flood it, otherwise don't.
boolean	floodfillEnabled()	For convenience, so users don't have to cast to FNDF, and unit tests using Dummy NDF will work.
List<Hash>	getFloodfillPeers()	list of the Hashes of currently known floodfill peers; Returned list will not include our own hash.
List<RouterInfo>	getKnownRouterData()
static boolean	isFloodfill(RouterInfo peer)
(package private) boolean	isVerifyInProgress(Hash h)
protected void	lookupBeforeDropping(Hash peer, RouterInfo info)	Search for a newer router info, drop it from the db if the search fails, unless just started up or have bigger problems.
void	publish(RouterInfo localRouterInfo)	Send our RI to the closest floodfill.
(package private) SearchJob	search(Hash key, Job onFindJob, Job onFailedLookupJob, long timeoutMs, boolean isLease)	Lookup using exploratory tunnels.
(package private) SearchJob	search(Hash key, Job onFindJob, Job onFailedLookupJob, long timeoutMs, boolean isLease, Hash fromLocalDest)	Lookup using the client's tunnels.
void	sendStore(Hash key, DatabaseEntry ds, Job onSuccess, Job onFailure, long sendTimeout, Set<Hash> toIgnore)	unused (overridden in FNDF)
void	setFloodfillEnabled(boolean yes)	Public, called from console.
(package private) void	setFloodfillEnabledFromMonitor(boolean yes)	Package private, called from FloodfillMonitorJob.
(package private) boolean	shouldThrottleFlood(Hash key)	Increments and tests.
(package private) boolean	shouldThrottleLookup(Hash from, TunnelId id)	Increments and tests.
void	shutdown()	If we are floodfill, turn it off and tell everybody.
void	startup()	Instruct the service that it should start normal operation.
(package private) void	verifyFinished(Hash h)
(package private) void	verifyStarted(Hash h)

Methods inherited from class net.i2p.router.networkdb.kademlia.KademliaNetworkDatabaseFacade

dropAfterLookupFailed, fail, failPermanently, findNearestRouters, getAllRouters, getBlindData, getBlindData, getDataStore, getDbDir, getExploreKeys, getKBuckets, getKBucketSetSize, getKnownLeaseSets, getKnownRouters, getLastExploreNewDate, getLastRouterInfoPublishTime, getLeases, getPeerSelector, getPeerTimeout, getRouters, isInitialized, isNegativeCached, isNegativeCachedForever, lookupDestination, lookupDestinationLocally, lookupFailed, lookupLeaseSet, lookupLeaseSet, lookupLeaseSetLocally, lookupLeaseSetRemotely, lookupLeaseSetRemotely, lookupLocally, lookupLocallyWithoutValidation, lookupRouterInfo, lookupRouterInfoLocally, publish, queueForExploration, removeBlindData, removeFromExploreKeys, renderStatusHTML, rescan, reseedChecker, restart, routerInfoPublishSuccessful, routingKeyChanged, searchComplete, setBlindData, setLastExploreNewDate, stopPublishing, store, store, store, unpublish, validate

Methods inherited from class net.i2p.router.NetworkDatabaseFacade

store

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CAPABILITY_FLOODFILL

public static final char CAPABILITY_FLOODFILL

See Also:

Constant Field Values

MAX_TO_FLOOD

public static final int MAX_TO_FLOOD

This is the flood redundancy. Entries are sent to this many other floodfills. Was 7 through release 0.9; 5 for 0.9.1. 4 as of 0.9.2; 3 as of 0.9.9

See Also:

Constant Field Values

PUBLISH_TIMEOUT

static final long PUBLISH_TIMEOUT

This maybe could be shorter than RepublishLeaseSetJob.REPUBLISH_LEASESET_TIMEOUT, because we are sending direct, but unresponsive floodfills may take a while due to timeouts.

See Also:

Constant Field Values

MIN_ACTIVE_PEERS

protected static final int MIN_ACTIVE_PEERS

NTCP cons drop quickly but SSU takes a while, so it's prudent to keep this a little higher than 1 or 2.

See Also:

Constant Field Values

Constructor Detail

FloodfillNetworkDatabaseFacade

public FloodfillNetworkDatabaseFacade(RouterContext context)

Method Detail

startup

public void startup()

Description copied from interface: Service

Instruct the service that it should start normal operation. This call DOES block until the service is ready.

Specified by:

startup in interface Service

Overrides:

startup in class KademliaNetworkDatabaseFacade

createHandlers

protected void createHandlers()

Description copied from class: KademliaNetworkDatabaseFacade

unused, see override

Overrides:

createHandlers in class KademliaNetworkDatabaseFacade

shutdown

public void shutdown()

If we are floodfill, turn it off and tell everybody.

Specified by:

shutdown in interface Service

Overrides:

shutdown in class KademliaNetworkDatabaseFacade

Since:

0.8.9

publish

public void publish(RouterInfo localRouterInfo)
             throws IllegalArgumentException

Send our RI to the closest floodfill.

Overrides:

publish in class KademliaNetworkDatabaseFacade

Throws:

IllegalArgumentException - if the local router info is invalid

sendStore

public void sendStore(Hash key,
                      DatabaseEntry ds,
                      Job onSuccess,
                      Job onFailure,
                      long sendTimeout,
                      Set<Hash> toIgnore)

Description copied from class: KademliaNetworkDatabaseFacade

unused (overridden in FNDF)

Specified by:

sendStore in class KademliaNetworkDatabaseFacade

shouldThrottleFlood

boolean shouldThrottleFlood(Hash key)

Increments and tests.

Since:

0.7.11

shouldThrottleLookup

boolean shouldThrottleLookup(Hash from,
                             TunnelId id)

Increments and tests.

Since:

0.7.11

floodConditional

public boolean floodConditional(DatabaseEntry ds)

If we are floodfill AND the key is not throttled, flood it, otherwise don't.

Returns:

if we did

Since:

0.9.36 for NTCP2

flood

public void flood(DatabaseEntry ds)

Send to a subset of all floodfill peers. We do this to implement Kademlia within the floodfills, i.e. we flood to those closest to the key.

createPeerSelector

protected PeerSelector createPeerSelector()

Specified by:

createPeerSelector in class KademliaNetworkDatabaseFacade

setFloodfillEnabled

public void setFloodfillEnabled(boolean yes)

Public, called from console. This wakes up the floodfill monitor, which will rebuild the RI and log in the event log, and call setFloodfillEnabledFromMonitor which really sets it.

setFloodfillEnabledFromMonitor

void setFloodfillEnabledFromMonitor(boolean yes)

Package private, called from FloodfillMonitorJob. This does not wake up the floodfill monitor.

Since:

0.9.34

floodfillEnabled

public boolean floodfillEnabled()

Description copied from class: NetworkDatabaseFacade

For convenience, so users don't have to cast to FNDF, and unit tests using Dummy NDF will work.

Overrides:

floodfillEnabled in class NetworkDatabaseFacade

Returns:

false; FNDF overrides to return actual setting

isFloodfill

public static boolean isFloodfill(RouterInfo peer)

Parameters:

peer - may be null, returns false if null

getKnownRouterData

public List<RouterInfo> getKnownRouterData()

search

SearchJob search(Hash key,
                 Job onFindJob,
                 Job onFailedLookupJob,
                 long timeoutMs,
                 boolean isLease)

Lookup using exploratory tunnels. Caller should check negative cache and/or banlist before calling. Begin a kademlia style search for the key specified, which can take up to timeoutMs and will fire the appropriate jobs on success or timeout (or if the kademlia search completes without any match)

Overrides:

search in class KademliaNetworkDatabaseFacade

Returns:

null always

search

SearchJob search(Hash key,
                 Job onFindJob,
                 Job onFailedLookupJob,
                 long timeoutMs,
                 boolean isLease,
                 Hash fromLocalDest)

Lookup using the client's tunnels. Caller should check negative cache and/or banlist before calling.

Overrides:

search in class KademliaNetworkDatabaseFacade

Parameters:

fromLocalDest - use these tunnels for the lookup, or null for exploratory

Returns:

null always

Since:

0.9.10

complete

void complete(Hash key)

Must be called by the search job queued by search() on success or failure

getFloodfillPeers

public List<Hash> getFloodfillPeers()

list of the Hashes of currently known floodfill peers; Returned list will not include our own hash. List is not sorted and not shuffled.

isVerifyInProgress

boolean isVerifyInProgress(Hash h)

Since:

0.7.10

verifyStarted

void verifyStarted(Hash h)

Since:

0.7.10

verifyFinished

void verifyFinished(Hash h)

Since:

0.7.10

lookupBeforeDropping

protected void lookupBeforeDropping(Hash peer,
                                    RouterInfo info)

Search for a newer router info, drop it from the db if the search fails, unless just started up or have bigger problems.

Overrides:

lookupBeforeDropping in class KademliaNetworkDatabaseFacade