Package net.i2p.router

Class RouterContext

java.lang.Object
net.i2p.I2PAppContext
net.i2p.router.RouterContext
public class RouterContext
extends I2PAppContext
Build off the core I2P context to provide a root for a router instance to coordinate its resources. Router instances themselves should be sure to have their own RouterContext, and rooting off of it will allow multiple routers to operate in the same JVM without conflict (e.g. sessionTags wont get intermingled, nor will their netDbs, jobQueues, or bandwidth limiters).

  • Constructor Details

    • RouterContext

      public RouterContext​(Router router)
      Caller MUST call initAll() after instantiation.
      Parameters:
      router - may be null for unit tests if you are careful

    • RouterContext

      public RouterContext​(Router router, Properties envProps)
      Caller MUST call initAll() after instantiation.
      Parameters:
      router - may be null for unit tests if you are careful

    • RouterContext

      RouterContext​(Router router, Properties envProps, boolean doInit)
      Caller MUST call initAll() after instantiation. NOT a public API, for use by Router only, NOT for external use.
      Parameters:
      router - may be null for unit tests if you are careful
      doInit - should this context be used as the global one (if necessary)? Will only apply if there is no global context now. If false, caller should call setGlobalContext() afterwards.
      Since:
      0.9.33

  • Method Details

    • setGlobalContext

      static boolean setGlobalContext​(RouterContext ctx)
      Sets the default context, unless there is one already. NOT a public API, for use by Router only, NOT for external use.
      Parameters:
      ctx - context constructed with doInit = false
      Returns:
      success (false if previously set)
      Since:
      0.9.33

    • setProperty

      @Deprecated public void setProperty​(String propName, String value)
      Deprecated.
      Use Router.saveConfig()
      Modify the configuration attributes of this context, changing one of the properties provided during the context construction.
      Parameters:
      propName - The name of the property.
      value - The new value for the property.
      Since:
      0.8.4

    • removeProperty

      void removeProperty​(String propName)
      Remove a property provided during the context construction. Only for use by the router. Others use Router.saveConfig()
      Parameters:
      propName - The name of the property.
      Since:
      0.9

    • addPropertyCallback

      public void addPropertyCallback​(I2PProperties.I2PPropertyCallback callback)
      Description copied from class: I2PAppContext
      Add a callback, which will fire upon changes in the property given in the specific callback. Unimplemented in I2PAppContext: this only makes sense in a router context.
      Overrides:
      addPropertyCallback in class I2PAppContext
      Parameters:
      callback - The implementation of the callback.

    • initAll

      public void initAll()
      The following properties may be used to replace various parts of the context with dummy implementations for testing, by setting the property to "true": 
        i2p.dummyClientFacade
  i2p.dummyNetDb
  i2p.dummyPeerManager
  i2p.dummyTunnelManager
  i2p.vmCommSystem (transport)

    • listContexts

      public static List<RouterContext> listContexts()
      Retrieve the list of router contexts currently instantiated in this JVM. This will always contain only one item (except when a simulation per the MultiRouter is going on).
      Returns:
      an unmodifiable list (as of 0.8.8). May be empty.

    • getContexts

      static List<RouterContext> getContexts()
      Same as listContexts() but package private and modifiable. The list should only be modified when a new context is created or a router is shut down.
      Since:
      0.8.8

    • killGlobalContext

      static void killGlobalContext()
      Kill the global I2PAppContext, so it isn't still around when we restart in the same JVM (Android). Only do this if there are no other routers in the JVM.
      Since:
      0.8.8

    • router

      public Router router()
      what router is this context working for?

    • routerHash

      public Hash routerHash()
      Convenience method for getting the router hash. Equivalent to context.router().getRouterInfo().getIdentity().getHash() Warning - risk of deadlock - do not call while holding locks
      Returns:
      may be null if called very early

    • clientManager

      public ClientManagerFacade clientManager()
      How are we coordinating clients for the router?

    • clientMessagePool

      public ClientMessagePool clientMessagePool()
      Where do we toss messages for the clients (and where do we get client messages to forward on from)?

    • inNetMessagePool

      public InNetMessagePool inNetMessagePool()
      Where do we get network messages from (aka where does the comm system dump what it reads)?

    • outNetMessagePool

      public OutNetMessagePool outNetMessagePool()
      Where do we put messages that the router wants to forwards onto the network?

    • messageHistory

      public MessageHistory messageHistory()
      Tracker component for monitoring what messages are wrapped in what containers and how they proceed through the network. This is fully for debugging, as when a large portion of the network tracks their messages through this messageHistory and submits their logs, we can correlate them and watch as messages flow from hop to hop.

    • messageRegistry

      public OutboundMessageRegistry messageRegistry()
      The registry is used by outbound messages to wait for replies.

    • netDb

      public NetworkDatabaseFacade netDb()
      Our db cache

    • jobQueue

      public JobQueue jobQueue()
      The actual driver of the router, where all jobs are enqueued and processed.

    • keyManager

      public KeyManager keyManager()
      Coordinates the router's ElGamal and DSA keys, as well as any keys given to it by clients as part of a LeaseSet.

    • commSystem

      public CommSystemFacade commSystem()
      How do we pass messages from our outNetMessagePool to another router

    • profileOrganizer

      public ProfileOrganizer profileOrganizer()
      Organize the peers we know about into various tiers, profiling their performance and sorting them accordingly.

    • peerManager

      public PeerManagerFacade peerManager()
      Minimal interface for selecting peers for various tasks based on given criteria. This is kept seperate from the profile organizer since this logic is independent of how the peers are organized (or profiled even).

    • profileManager

      public ProfileManager profileManager()
      Expose a simple API for various router components to take note of particular events that a peer enacts (sends us a message, agrees to participate in a tunnel, etc).

    • bandwidthLimiter

      public FIFOBandwidthLimiter bandwidthLimiter()
      Coordinate this router's bandwidth limits

    • tunnelManager

      public TunnelManagerFacade tunnelManager()
      Coordinate this router's tunnels (its pools, participation, backup, etc). Any configuration for the tunnels is rooted from the context's properties

    • tunnelDispatcher

      public TunnelDispatcher tunnelDispatcher()
      Handle tunnel messages, as well as coordinate the gateways

    • statPublisher

      public StatisticsManager statPublisher()
      If the router is configured to, gather up some particularly tasty morsels regarding the stats managed and offer to publish them into the routerInfo.

    • banlist

      public Banlist banlist()
      who does this peer hate?

    • blocklist

      public Blocklist blocklist()

    • messageValidator

      public MessageValidator messageValidator()
      The router keeps track of messages it receives to prevent duplicates, as well as other criteria for "validity".

    • throttle

      public RouterThrottle throttle()
      Component to coordinate our accepting/rejecting of requests under load

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getProperty

      public String getProperty​(String propName)
      Tie in the router's config as properties, as well as whatever the I2PAppContext says.
      Overrides:
      getProperty in class I2PAppContext

    • getProperty

      public String getProperty​(String propName, String defaultVal)
      Tie in the router's config as properties, as well as whatever the I2PAppContext says.
      Overrides:
      getProperty in class I2PAppContext

    • getProperty

      public int getProperty​(String propName, int defaultVal)
      Return an int with an int default
      Overrides:
      getProperty in class I2PAppContext

    • getProperty

      public long getProperty​(String propName, long defaultVal)
      Return a long with a long default
      Overrides:
      getProperty in class I2PAppContext
      Since:
      0.9.4

    • getProperties

      public Properties getProperties()
      Description copied from class: I2PAppContext
      Access the configuration attributes of this context, listing the properties provided during the context construction, as well as the ones included in System.getProperties.
      Overrides:
      getProperties in class I2PAppContext
      Returns:
      new Properties with system and context properties
      Since:
      0.8.4

    • initializeClock

      protected void initializeClock()
      Overrides:
      initializeClock in class I2PAppContext

    • keyRing

      public KeyRing keyRing()
      override to support storage in router.config
      Overrides:
      keyRing in class I2PAppContext

    • initializeKeyRing

      protected void initializeKeyRing()
      Overrides:
      initializeKeyRing in class I2PAppContext

    • removeShutdownTasks

      void removeShutdownTasks()
      Since:
      0.8.8

    • addFinalShutdownTask

      public void addFinalShutdownTask​(Runnable task)
      The last thing to be called before router shutdown. No context resources, including logging, will be available. Only for external threads in the same JVM needing to know when the shutdown is complete, like Android.
      Since:
      0.8.8

    • getFinalShutdownTasks

      Set<Runnable> getFinalShutdownTasks()
      Returns:
      the Set
      Since:
      0.8.8

    • isRouterContext

      public boolean isRouterContext()
      Use this instead of context instanceof RouterContext
      Overrides:
      isRouterContext in class I2PAppContext
      Returns:
      true
      Since:
      0.7.9

    • internalClientManager

      public InternalClientManager internalClientManager()
      Use this to connect to the router in the same JVM.
      Overrides:
      internalClientManager in class I2PAppContext
      Returns:
      the client manager
      Since:
      0.8.3

    • clientAppManager

      public ClientAppManager clientAppManager()
      The RouterAppManager.
      Overrides:
      clientAppManager in class I2PAppContext
      Returns:
      the manager
      Since:
      0.9.4

    • routerAppManager

      public RouterAppManager routerAppManager()
      The RouterAppManager. For convenience, same as clientAppManager(), no cast required
      Returns:
      the manager
      Since:
      0.9.11

    • initializeSessionKeyManager

      protected void initializeSessionKeyManager()
      As of 0.9.15, this returns a dummy SessionKeyManager in I2PAppContext. Overridden in RouterContext to return the full TransientSessionKeyManager or MuxedSKM, depending on configured router encryption type.
      Overrides:
      initializeSessionKeyManager in class I2PAppContext
      Since:
      0.9.15

    • routingKeyGenerator

      public RoutingKeyGenerator routingKeyGenerator()
      Determine how much do we want to mess with the keys to turn them into something we can route. This is context specific because we may want to test out how things react when peers don't agree on how to skew. Returns same thing as routerKeyGenerator()
      Overrides:
      routingKeyGenerator in class I2PAppContext
      Returns:
      non-null
      Since:
      0.9.16 Overrides I2PAppContext. Returns non-null in RouterContext and null in I2PAppcontext.

    • routerKeyGenerator

      public RouterKeyGenerator routerKeyGenerator()
      Determine how much do we want to mess with the keys to turn them into something we can route. This is context specific because we may want to test out how things react when peers don't agree on how to skew. Returns same thing as routingKeyGenerator()
      Returns:
      non-null
      Since:
      0.9.16

    • garlicMessageParser

      public GarlicMessageParser garlicMessageParser()
      Since we only need one.
      Returns:
      non-null after initAll()
      Since:
      0.9.20

    • elGamalAESEngine

      public ElGamalAESEngine elGamalAESEngine()
      Access the ElGamal/AES+SessionTag engine for this context. The algorithm makes use of the context's sessionKeyManager to coordinate transparent access to the sessionKeys and sessionTags, as well as the context's elGamal engine (which in turn keeps stats, etc).
      Since:
      0.9.38 moved from superclass (app context)

    • eciesEngine

      public ECIESAEADEngine eciesEngine()
      Access the ECIES/AEAD engine for this context. The algorithm makes use of the sessionKeyManager to coordinate transparent access to the sessionKeys and sessionTags.
      Since:
      0.9.44

    • getEstimatedDowntime

      public long getEstimatedDowntime()
      How long this router was down before it started, or 0 if unknown. This may be used for a determination of whether to regenerate keys, for example. We use the timestamp of the previous ping file left behind on crash, as set by isOnlyRouterRunning(), if present. Otherwise, the last STOPPED entry in the event log. May take a while to run the first time, if it has to go through the event log. Once called, the result is cached.
      Overrides:
      getEstimatedDowntime in class I2PAppContext
      Returns:
      downtime in ms or 0 if unknown
      Since:
      0.0.47