Package net.i2p.router.networkdb.kademlia

Class PersistentDataStore

java.lang.Object

net.i2p.router.networkdb.kademlia.TransientDataStore

net.i2p.router.networkdb.kademlia.PersistentDataStore

All Implemented Interfaces:

DataStore

public class PersistentDataStore
extends TransientDataStore

Write out keys to disk when we get them and periodically read ones we don't know about into memory, with newly read routers are also added to the routing table. Public only for access to static methods by startup classes

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final String	DIR_PREFIX
static final FileFilter	RI_FILTER

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

_context, _log

Constructor Summary

Constructors

Constructor	Description
PersistentDataStore(RouterContext ctx, String dbDir, KademliaNetworkDatabaseFacade facade)

Method Summary

Modifier and Type	Method	Description
DatabaseEntry	get(Hash key)
DatabaseEntry	get(Hash key, boolean persist)	Prepare for having only a partial set in memory and the rest on disk
static File	getRouterInfoFile(RouterContext ctx, Hash hash)	The persistent RI file for a hash.
(package private) static Hash	getRouterInfoHash(String filename)	Package private for installer BundleRouterInfos
boolean	isInitialized()
boolean	put(Hash key, DatabaseEntry data)
boolean	put(Hash key, DatabaseEntry data, boolean persist)	for PersistentDataStore only - don't use here
DatabaseEntry	remove(Hash key)
DatabaseEntry	remove(Hash key, boolean persist)	for PersistentDataStore only - don't use here
void	rescan()
void	restart()
void	stop()

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

countLeaseSets, getEntries, getKeys, getMapEntries, isKnown, size, toString

Methods inherited from class java.lang.Object

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

Field Details

DIR_PREFIX

static final String DIR_PREFIX

See Also:

• Constant Field Values

RI_FILTER

public static final FileFilter RI_FILTER

Since:

0.9.34

Constructor Details

PersistentDataStore

public PersistentDataStore(RouterContext ctx,
 String dbDir,
 KademliaNetworkDatabaseFacade facade)
                    throws IOException

Parameters:

dbDir - relative path

Throws:

IOException

Method Details

isInitialized

public boolean isInitialized()

Specified by:

isInitialized in interface DataStore

Overrides:

isInitialized in class TransientDataStore

stop

public void stop()

Specified by:

stop in interface DataStore

Overrides:

stop in class TransientDataStore

restart

public void restart()

Specified by:

restart in interface DataStore

Overrides:

restart in class TransientDataStore

rescan

public void rescan()

Specified by:

rescan in interface DataStore

Overrides:

rescan in class TransientDataStore

get

public DatabaseEntry get(Hash key)

Specified by:

get in interface DataStore

Overrides:

get in class TransientDataStore

get

public DatabaseEntry get(Hash key,
 boolean persist)

Prepare for having only a partial set in memory and the rest on disk

Specified by:

get in interface DataStore

Overrides:

get in class TransientDataStore

Parameters:

persist - if false, call super only, don't access disk

remove

public DatabaseEntry remove(Hash key)

Specified by:

remove in interface DataStore

Overrides:

remove in class TransientDataStore

remove

public DatabaseEntry remove(Hash key,
 boolean persist)

Description copied from class: TransientDataStore

for PersistentDataStore only - don't use here

Specified by:

remove in interface DataStore

Overrides:

remove in class TransientDataStore

put

public boolean put(Hash key,
 DatabaseEntry data)

Specified by:

put in interface DataStore

Overrides:

put in class TransientDataStore

Parameters:

data - must be validated before here

Returns:

success

put

public boolean put(Hash key,
 DatabaseEntry data,
 boolean persist)

Description copied from class: TransientDataStore

for PersistentDataStore only - don't use here

Specified by:

put in interface DataStore

Overrides:

put in class TransientDataStore

getRouterInfoFile

public static File getRouterInfoFile(RouterContext ctx,
 Hash hash)

The persistent RI file for a hash. This is available before the netdb subsystem is running, so we can delete our old RI.

Returns:

non-null, should be absolute, does not necessarily exist

Since:

0.9.23

getRouterInfoHash

static Hash getRouterInfoHash(String filename)

Package private for installer BundleRouterInfos