Package org.jgroups.demos

Class Topology

  • All Implemented Interfaces:
    java.awt.event.WindowListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.EventListener, javax.accessibility.Accessible
    public class Topology
extends java.awt.Frame
implements java.awt.event.WindowListener
    Demonstrates the membership service. Each member is represented by a rectangle that contains the addresses of all the members. The coordinator (= oldest member in the group) is painted in blue. New members can be started; all existing members will update their graphical appearance to reflect the new membership. When the coordinator itself is killed, another one will take over (the next in rank).

    A nice demo is to start a number of Topology instances at the same time. All of them will be blue (all are coordinators since they don't find each other). Then the MERGE3 protocol sets in and only one will retain its coordinator role.

    See Also:
    Serialized Form

    • Nested Class Summary

      • Nested classes/interfaces inherited from class java.awt.Frame

        java.awt.Frame.AccessibleAWTFrame

      • Nested classes/interfaces inherited from class java.awt.Window

        java.awt.Window.AccessibleAWTWindow, java.awt.Window.Type

      • Nested classes/interfaces inherited from class java.awt.Container

        java.awt.Container.AccessibleAWTContainer

      • Nested classes/interfaces inherited from class java.awt.Component

        java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private JChannel channel  
      private static java.lang.String channel_name  
      private static int CheckStyle  
      private boolean coordinator  
      private java.awt.FontMetrics fm  
      private java.util.List<Address> members  
      private java.lang.Object my_addr  
      private java.awt.Font myFont  
      private java.lang.String name  
      private java.awt.Color node_color  
      private static int NormalStyle  
      private java.lang.String props  

      • Fields inherited from class java.awt.Frame

        CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR

      • Fields inherited from class java.awt.Component

        accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

      • Fields inherited from interface java.awt.image.ImageObserver

        ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

    • Constructor Summary

      Constructors 
      Constructor Description
      Topology​(java.lang.String props, java.lang.String name)  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addNode​(Address member)  
      void coordinatorChosen()  
      void drawNode​(java.awt.Graphics g, int x, int y, java.lang.String label, int style)  
      void drawTopology​(java.awt.Graphics g)  
      static void main​(java.lang.String[] args)  
      void paint​(java.awt.Graphics g)  
      void removeNode​(java.lang.Object member)  
      void start()  
      void windowActivated​(java.awt.event.WindowEvent e)  
      void windowClosed​(java.awt.event.WindowEvent e)  
      void windowClosing​(java.awt.event.WindowEvent e)  
      void windowDeactivated​(java.awt.event.WindowEvent e)  
      void windowDeiconified​(java.awt.event.WindowEvent e)  
      void windowIconified​(java.awt.event.WindowEvent e)  
      void windowOpened​(java.awt.event.WindowEvent e)  

      • Methods inherited from class java.awt.Frame

        addNotify, getAccessibleContext, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, paramString, remove, removeNotify, setBackground, setCursor, setExtendedState, setIconImage, setMaximizedBounds, setMenuBar, setOpacity, setResizable, setShape, setState, setTitle, setUndecorated

      • Methods inherited from class java.awt.Window

        addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBackground, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getIconImages, getInputContext, getListeners, getLocale, getModalExclusionType, getMostRecentFocusOwner, getOpacity, getOwnedWindows, getOwner, getOwnerlessWindows, getShape, getToolkit, getType, getWarningString, getWindowFocusListeners, getWindowListeners, getWindows, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isAlwaysOnTopSupported, isAutoRequestFocus, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isOpaque, isShowing, isValidateRoot, pack, postEvent, processEvent, processWindowEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, reshape, setAlwaysOnTop, setAutoRequestFocus, setBounds, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setIconImages, setLocation, setLocation, setLocationByPlatform, setLocationRelativeTo, setMinimumSize, setModalExclusionType, setSize, setSize, setType, setVisible, show, toBack, toFront

      • Methods inherited from class java.awt.Container

        add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusDownCycle, update, validate, validateTree

      • Methods inherited from class java.awt.Component

        action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, requestFocusInWindow, resize, resize, revalidate, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setMaximumSize, setMixingCutoutShape, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface java.awt.MenuContainer

        getFont, postEvent

    • Field Detail

      • members

        private final java.util.List<Address> members

      • myFont

        private final java.awt.Font myFont

      • fm

        private final java.awt.FontMetrics fm

      • node_color

        private final java.awt.Color node_color

      • coordinator

        private boolean coordinator

      • my_addr

        private java.lang.Object my_addr

      • props

        private java.lang.String props

      • name

        private final java.lang.String name

    • Constructor Detail

      • Topology

        public Topology​(java.lang.String props,
                java.lang.String name)

    • Method Detail

      • addNode

        public void addNode​(Address member)

      • removeNode

        public void removeNode​(java.lang.Object member)

      • drawNode

        public void drawNode​(java.awt.Graphics g,
                     int x,
                     int y,
                     java.lang.String label,
                     int style)

      • drawTopology

        public void drawTopology​(java.awt.Graphics g)

      • paint

        public void paint​(java.awt.Graphics g)
        Overrides:
        paint in class java.awt.Window

      • coordinatorChosen

        public void coordinatorChosen()

      • windowActivated

        public void windowActivated​(java.awt.event.WindowEvent e)
        Specified by:
        windowActivated in interface java.awt.event.WindowListener

      • windowClosed

        public void windowClosed​(java.awt.event.WindowEvent e)
        Specified by:
        windowClosed in interface java.awt.event.WindowListener

      • windowClosing

        public void windowClosing​(java.awt.event.WindowEvent e)
        Specified by:
        windowClosing in interface java.awt.event.WindowListener

      • windowDeactivated

        public void windowDeactivated​(java.awt.event.WindowEvent e)
        Specified by:
        windowDeactivated in interface java.awt.event.WindowListener

      • windowDeiconified

        public void windowDeiconified​(java.awt.event.WindowEvent e)
        Specified by:
        windowDeiconified in interface java.awt.event.WindowListener

      • windowIconified

        public void windowIconified​(java.awt.event.WindowEvent e)
        Specified by:
        windowIconified in interface java.awt.event.WindowListener

      • windowOpened

        public void windowOpened​(java.awt.event.WindowEvent e)
        Specified by:
        windowOpened in interface java.awt.event.WindowListener

      • start

        public void start()
           throws java.lang.Exception
        Throws:
        java.lang.Exception

      • main

        public static void main​(java.lang.String[] args)