cacheview.java

这是一个基于java编写的torrent的P2P源码

    lbl.setLayoutData(gridData);
    Messages.setLanguageText(lbl,"CacheView.speeds.writes");
    
    lbl = new Label(gCacheSpeeds,SWT.NULL);
    Messages.setLanguageText(lbl,"CacheView.speeds.fromCache");
    
    readsFromCache = new Canvas(gCacheSpeeds,SWT.NULL);
    gridData = new GridData(GridData.FILL_BOTH);
    readsFromCache.setLayoutData(gridData);
    rfcGraph = SpeedGraphic.getInstance();
    rfcGraph.initialize(readsFromCache);
    
    
    writesToCache = new Canvas(gCacheSpeeds,SWT.NULL);
    gridData = new GridData(GridData.FILL_BOTH);
    writesToCache.setLayoutData(gridData);
    wtcGraph = SpeedGraphic.getInstance();
    wtcGraph.initialize(writesToCache);
    
    lbl = new Label(gCacheSpeeds,SWT.NULL);
    Messages.setLanguageText(lbl,"CacheView.speeds.fromFile");
    
    readsFromFile = new Canvas(gCacheSpeeds,SWT.NULL);
    gridData = new GridData(GridData.FILL_BOTH);
    readsFromFile.setLayoutData(gridData);
    rffGraph = SpeedGraphic.getInstance();
    rffGraph.initialize(readsFromFile);
    
    writesToFile = new Canvas(gCacheSpeeds,SWT.NULL);
    gridData = new GridData(GridData.FILL_BOTH);
    writesToFile.setLayoutData(gridData);
    wtfGraph = SpeedGraphic.getInstance();
    wtfGraph.initialize(writesToFile);
  }
  
  public void periodicUpdate() {
    rfcGraph.addIntValue((int)stats.getAverageBytesReadFromCache());
    rffGraph.addIntValue((int)stats.getAverageBytesReadFromFile());
    wtcGraph.addIntValue((int)stats.getAverageBytesWrittenToCache());
    wtfGraph.addIntValue((int)stats.getAverageBytesWrittenToFile());
  }
  
  private void generateWritesGroup() {
    GridData gridData;
    
    Group gCacheWrites = new Group(panel,SWT.NULL);
    Messages.setLanguageText(gCacheWrites,"CacheView.writes.title");
    gCacheWrites.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    
    GridLayout layoutGeneral = new GridLayout();
    layoutGeneral.numColumns = 6;    
    gCacheWrites.setLayout(layoutGeneral);
    Label lbl;
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    Messages.setLanguageText(lbl,"CacheView.reads.#");
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    Messages.setLanguageText(lbl,"CacheView.reads.amount");
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    Messages.setLanguageText(lbl,"CacheView.reads.avgsize");
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    lbl = new Label(gCacheWrites,SWT.NULL);
        
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lbl.setLayoutData(gridData);    
    Messages.setLanguageText(lbl,"CacheView.writes.toCache");
    
    lblNumberWritesToCache = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lblNumberWritesToCache.setLayoutData(gridData);
    
    lblWritesToCache = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lblWritesToCache.setLayoutData(gridData);
    
    lblAvgSizeToCache = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lblAvgSizeToCache.setLayoutData(gridData);
    
    pbWrites =  new ProgressBar(gCacheWrites,SWT.HORIZONTAL);
    gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.verticalSpan = 2;
    pbWrites.setLayoutData(gridData);
    pbWrites.setMinimum(0);
    pbWrites.setMaximum(1000);
    
    lblPercentWrites = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.verticalSpan = 2;
    gridData.widthHint = 100;
    lblPercentWrites.setLayoutData(gridData);
    
    lbl = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lbl.setLayoutData(gridData);    
    Messages.setLanguageText(lbl,"CacheView.writes.toFile");
    
    lblNumberWritesToFile = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lblNumberWritesToFile.setLayoutData(gridData);
    
    lblWritesToFile = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lblWritesToFile.setLayoutData(gridData);
    
    lblAvgSizeToFile = new Label(gCacheWrites,SWT.NULL);
    gridData = new GridData();
    gridData.widthHint = 100;
    lblAvgSizeToFile.setLayoutData(gridData);
  }

  public void delete() {
    Utils.disposeComposite(panel);
    rfcGraph.dispose();
    rffGraph.dispose();
    wtcGraph.dispose();
    wtfGraph.dispose();
  }

  public String getFullTitle() {
    return MessageText.getString("CacheView.title.full"); //$NON-NLS-1$
  }
  
  public Composite getComposite() {
    return panel;
  }
  
  public void refresh() {
    //General Part    
    lblSize.setText(DisplayFormatters.formatByteCountToKiBEtc(stats.getSize()));
    lblInUse.setText(DisplayFormatters.formatByteCountToKiBEtc(stats.getUsedSize()));
    
    int perThousands = (int) ((1000 * stats.getUsedSize()) / stats.getSize());
    lblPercentUsed.setText(DisplayFormatters.formatPercentFromThousands(perThousands));
    pbInUse.setSelection(perThousands);
    
    //Reads
    refrehReads();
    
    //Writes
    refreshWrites();
    
    //Graphics
    rfcGraph.refresh();
    rffGraph.refresh();
    wtcGraph.refresh();
    wtfGraph.refresh();    
  }  
  
  /**
   * 
   */
  private void refrehReads() {
    int perThousands;
    long readsFromCache = stats.getBytesReadFromCache();
    long readsFromFile = stats.getBytesReadFromFile();
    long nbReadsFromCache = stats.getCacheReadCount();
    long nbReadsFromFile = stats.getFileReadCount();
    lblNumberReadsFromCache.setText("" + nbReadsFromCache);
    lblNumberReadsFromFile.setText("" + nbReadsFromFile);
    
    if(nbReadsFromCache != 0) {
      long avgReadFromCache = readsFromCache / nbReadsFromCache;
      lblAvgSizeFromCache.setText(DisplayFormatters.formatByteCountToKiBEtc(avgReadFromCache));
    } else {
      lblAvgSizeFromCache.setText("--");
    }
    
    if(nbReadsFromFile != 0) {
      long avgReadFromFile = readsFromFile / nbReadsFromFile;
      lblAvgSizeFromFile.setText(DisplayFormatters.formatByteCountToKiBEtc(avgReadFromFile));
    } else {
      lblAvgSizeFromFile.setText("--");
    }
    
    lblReadsFromCache.setText(DisplayFormatters.formatByteCountToKiBEtc(readsFromCache));
    lblReadsFromFile.setText(DisplayFormatters.formatByteCountToKiBEtc(readsFromFile));
    
    long totalRead = readsFromCache + readsFromFile;
    if(totalRead > 0) {
      perThousands = (int) ((1000l * stats.getBytesReadFromCache()) / totalRead);
      lblPercentReads.setText(DisplayFormatters.formatPercentFromThousands(perThousands) + " " + MessageText.getString("CacheView.reads.hits"));
      pbReads.setSelection(perThousands);      
    }
  }
  
  private void refreshWrites() {
    int perThousands;
    long writesToCache = stats.getBytesWrittenToCache();
    long writesToFile = stats.getBytesWrittenToFile();
    long nbWritesToCache = stats.getCacheWriteCount();
    long nbWritesToFile = stats.getFileWriteCount();
    lblNumberWritesToCache.setText("" + nbWritesToCache);
    lblNumberWritesToFile.setText("" + nbWritesToFile);
    
    if(nbWritesToCache != 0) {
      long avgReadToCache = writesToCache / nbWritesToCache;
      lblAvgSizeToCache.setText(DisplayFormatters.formatByteCountToKiBEtc(avgReadToCache));
    } else {
      lblAvgSizeToCache.setText("--");
    }
    
    if(nbWritesToFile != 0) {
      long avgReadToFile = writesToFile / nbWritesToFile;
      lblAvgSizeToFile.setText(DisplayFormatters.formatByteCountToKiBEtc(avgReadToFile));
    } else {
      lblAvgSizeToFile.setText("--");
    }
    
    lblWritesToCache.setText(DisplayFormatters.formatByteCountToKiBEtc(writesToCache));
    lblWritesToFile.setText(DisplayFormatters.formatByteCountToKiBEtc(writesToFile));
    
    long totalNbWrites = nbWritesToCache + nbWritesToFile;
    if(totalNbWrites > 0) {
      perThousands = (int) ((1000l * nbWritesToCache) / totalNbWrites);
      lblPercentWrites.setText(DisplayFormatters.formatPercentFromThousands(perThousands) + " " + MessageText.getString("CacheView.writes.hits"));
      pbWrites.setSelection(perThousands);      
    }
  }

  public String getData() {
    return "CacheView.title.full";
  }
    
}