Class Main

java.lang.Object

Main

public class Main
extends Object

Entry point for babel-canvas — a peer-to-peer collaborative pixel canvas.

The demo composes the real ParadigmShift overlay stack and lets the Babel runtime wire it together through asynchronous events:

1. HyParView — partial-view membership (the gossip overlay), which auto-discovers peers on the LAN (it's a DiscoverableProtocol);
2. EagerPushGossipBroadcast — disseminates paint operations to the overlay;
3. AntiEntropy — optional bloom-filter reconciliation that recovers missed paint ops (enabled with canvas.antientropy.enabled);
4. CanvasApp — the collaborative canvas + web UI on top.

Launch: java -jar babel-canvas.jar [babel.port=<port>] [babel.interface=<nic>] [babel.address=<ip>] [HyParView.contact=<host>:<port>] [canvas.ui.port=<port>]. To run several nodes on one machine, give each a distinct babel.port spaced by ≥ 10 (eager-push binds babel.port+1 in the default offset mode) and a distinct babel.discovery.unicast.port.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PAR_ANTIENTROPY_ENABLED	Property key — load and wire the anti-entropy reconciliation protocol.
static final String	PAR_DEFAULT_BABEL_PORT	Default value for the TCP port (Babel.PAR_DEFAULT_PORT, i.e.

Constructor Summary

Constructors

Constructor	Description
Main()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Field Details

PAR_DEFAULT_BABEL_PORT

public static final String PAR_DEFAULT_BABEL_PORT

Default value for the TCP port (Babel.PAR_DEFAULT_PORT, i.e. babel.port) HyParView binds. babel-core owns the key but defines no default value, so the demo supplies one here.

See Also:

• Constant Field Values

PAR_ANTIENTROPY_ENABLED

public static final String PAR_ANTIENTROPY_ENABLED

Property key — load and wire the anti-entropy reconciliation protocol. When true, Main turns on EagerPushGossipBroadcast.SupportAntiEntropy and gives AntiEntropy its own channel at babel.port + 2.

See Also:

• Constant Field Values

Constructor Details

Main

public Main()

Method Details

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception