Java tutorial
/* * Copyright 2015 the original author or authors. * @https://github.com/scouter-project/scouter * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package scouter.client.host.views; import java.util.ArrayList; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.layout.TableColumnLayout; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.Clipboard; import org.eclipse.swt.dnd.TextTransfer; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; import org.eclipse.ui.part.ViewPart; import scouter.client.Images; import scouter.client.model.TextProxy; import scouter.client.net.TcpProxy; import scouter.client.server.Server; import scouter.client.server.ServerManager; import scouter.client.sorter.ColumnLabelSorter; import scouter.client.util.ConsoleProxy; import scouter.client.util.ExUtil; import scouter.client.util.ImageUtil; import scouter.client.util.ScouterUtil; import scouter.lang.pack.MapPack; import scouter.lang.value.ListValue; import scouter.net.RequestCmd; import scouter.util.CastUtil; import scouter.util.FormatUtil; public class DiskUsageView extends ViewPart { public static final String ID = DiskUsageView.class.getName(); private TableViewer viewer; private TableColumnLayout tableColumnLayout; private Clipboard clipboard; private int objHash; private int serverId; @Override public void createPartControl(Composite parent) { initialLayout(parent); clipboard = new Clipboard(null); } private void initialLayout(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(new GridLayout(1, true)); Composite tableComposite = new Composite(composite, SWT.NONE); tableComposite.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); tableComposite.setLayout(new GridLayout(1, true)); createTableViewer(tableComposite); IToolBarManager man = getViewSite().getActionBars().getToolBarManager(); man.add(new Action("Reload", ImageUtil.getImageDescriptor(Images.refresh)) { public void run() { load(); } }); } public void setInput(int serverId, int objHash) { this.serverId = serverId; this.objHash = objHash; this.setPartName("Disk Usage[" + TextProxy.object.getText(objHash) + "]"); Server server = ServerManager.getInstance().getServer(serverId); String serverName = null; if (server != null) { serverName = server.getName(); } this.setContentDescription("" + serverName + "|" + TextProxy.object.getText(objHash)); load(); } private void createTableViewer(Composite composite) { viewer = new TableViewer(composite, SWT.MULTI | SWT.FULL_SELECTION | SWT.BORDER); tableColumnLayout = new TableColumnLayout(); composite.setLayout(tableColumnLayout); createColumns(); final Table table = viewer.getTable(); table.setHeaderVisible(true); table.setLinesVisible(true); createTableContextMenu(); viewer.setContentProvider(new ArrayContentProvider()); viewer.setComparator(new ColumnLabelSorter(viewer).setCustomCompare(new ColumnLabelSorter.ICustomCompare() { public int doCompare(TableColumn col, int index, Object o1, Object o2) { ILabelProvider labelProvider = (ILabelProvider) viewer.getLabelProvider(index); String t1 = labelProvider.getText(o1); String t2 = labelProvider.getText(o2); Boolean isNumber = (Boolean) col.getData("isNumber"); if (isNumber != null && isNumber.booleanValue()) { String number1 = ColumnLabelSorter.numonly(t1); String number2 = ColumnLabelSorter.numonly(t2); double n1 = CastUtil.cdouble(number1); double n2 = CastUtil.cdouble(number2); if (t1.endsWith("G")) { n1 *= Math.pow(1024, 3); } else if (t1.endsWith("M")) { n1 *= Math.pow(1024, 2); } else if (t1.endsWith("K")) { n1 *= Math.pow(1024, 1); } if (t2.endsWith("G")) { n2 *= Math.pow(1024, 3); } else if (t2.endsWith("M")) { n2 *= Math.pow(1024, 2); } else if (t2.endsWith("K")) { n2 *= Math.pow(1024, 1); } if (n1 == n2) { return 0; } else { return (n1 > n2) ? 1 : -1; } } else { if (t1 == null) t1 = ""; if (t2 == null) t2 = ""; } return t1.compareTo(t2); } })); GridData gridData = new GridData(GridData.FILL, GridData.FILL, true, true); viewer.getControl().setLayoutData(gridData); } boolean ctrlPressed = false; private void createTableContextMenu() { MenuManager manager = new MenuManager(); viewer.getControl().setMenu(manager.createContextMenu(viewer.getControl())); manager.add(new Action("&Copy", ImageDescriptor.createFromImage(Images.copy)) { public void run() { selectionCopyToClipboard(); } }); viewer.getTable().addListener(SWT.KeyDown, new Listener() { public void handleEvent(Event e) { if (e.keyCode == SWT.CTRL) { ctrlPressed = true; } else if (e.keyCode == 'c' || e.keyCode == 'C') { if (ctrlPressed) { selectionCopyToClipboard(); } } } }); viewer.getTable().addListener(SWT.KeyUp, new Listener() { public void handleEvent(Event e) { if (e.keyCode == SWT.CTRL) { ctrlPressed = false; } } }); } private void selectionCopyToClipboard() { if (viewer != null) { TableItem[] items = viewer.getTable().getSelection(); if (items != null && items.length > 0) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < items.length; i++) { DiskData data = (DiskData) items[i].getData(); sb.append(data.toString()); } clipboard.setContents(new Object[] { sb.toString() }, new Transfer[] { TextTransfer.getInstance() }); } } } private void load() { ExUtil.asyncRun(new Runnable() { public void run() { TcpProxy tcp = TcpProxy.getTcpProxy(serverId); MapPack pack = null; try { MapPack param = new MapPack(); param.put("objHash", objHash); pack = (MapPack) tcp.getSingle(RequestCmd.HOST_DISK_USAGE, param); } catch (Throwable t) { ConsoleProxy.errorSafe(t.toString()); } finally { TcpProxy.putTcpProxy(tcp); } if (pack != null) { ListValue deviceList = pack.getList("Device"); ListValue totalList = pack.getList("Total"); ListValue usedList = pack.getList("Used"); ListValue freeList = pack.getList("Free"); ListValue pctList = pack.getList("Pct"); ListValue typeList = pack.getList("Type"); ListValue mountList = pack.getList("Mount"); final ArrayList<DiskData> diskList = new ArrayList<DiskData>(); if (deviceList != null && deviceList.size() > 0) { for (int i = 0; i < deviceList.size(); i++) { DiskData data = new DiskData(); diskList.add(data); data.device = deviceList.getString(i); data.total = totalList.getLong(i); data.used = usedList.getLong(i); data.free = freeList.getLong(i); data.pct = (float) pctList.getDouble(i); data.type = typeList.getString(i); data.mount = mountList.getString(i); } } ExUtil.exec(viewer.getTable(), new Runnable() { public void run() { viewer.setInput(diskList); } }); } } }); } private void createColumns() { for (DiskColumnEnum column : DiskColumnEnum.values()) { TableViewerColumn c = createTableViewerColumn(column.getTitle(), column.getWidth(), column.getAlignment(), column.isResizable(), column.isMoveable(), column.isNumber()); ColumnLabelProvider labelProvider = null; switch (column) { case DEVICE: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return ((DiskData) element).device; } return null; } }; break; case TOTAL: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return FormatUtil.printMem(((DiskData) element).total); } return null; } }; break; case USED: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return FormatUtil.printMem(((DiskData) element).used); } return null; } }; break; case FREE: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return FormatUtil.printMem(((DiskData) element).free); } return null; } }; break; case PCT: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return FormatUtil.print(((DiskData) element).pct, "#0.0") + "%"; } return null; } }; break; case TYPE: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return ((DiskData) element).type; } return null; } }; break; case MOUNT: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof DiskData) { return ((DiskData) element).mount; } return null; } }; break; } if (labelProvider != null) { c.setLabelProvider(labelProvider); } } } private TableViewerColumn createTableViewerColumn(String title, int width, int alignment, boolean resizable, boolean moveable, final boolean isNumber) { final TableViewerColumn viewerColumn = new TableViewerColumn(viewer, SWT.NONE); final TableColumn column = viewerColumn.getColumn(); column.setText(title); column.setAlignment(alignment); column.setMoveable(moveable); tableColumnLayout.setColumnData(column, new ColumnWeightData(30, width, resizable)); column.setData("isNumber", isNumber); column.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { ColumnLabelSorter sorter = (ColumnLabelSorter) viewer.getComparator(); sorter.setColumn(column); } }); return viewerColumn; } @Override public void setFocus() { } class DiskData { public String device; public long total; public long used; public long free; public float pct; public String type; public String mount; public String toString() { return device + "\t" + total + "\t" + used + "\t" + free + "\t" + pct + "\t" + type + "\t" + mount + "\n"; } } public enum DiskColumnEnum { DEVICE("Device", 100, SWT.LEFT, true, true, false), // TOTAL("Total", 70, SWT.RIGHT, true, true, true), // USED("Used", 70, SWT.RIGHT, true, true, true), FREE("Free", 70, SWT.RIGHT, true, true, true), PCT("PCT", 50, SWT.CENTER, true, true, true), TYPE("Type", 70, SWT.CENTER, true, true, false), MOUNT("Mount", 80, SWT.LEFT, true, true, false); private final String title; private final int width; private final int alignment; private final boolean resizable; private final boolean moveable; private final boolean isNumber; private DiskColumnEnum(String text, int width, int alignment, boolean resizable, boolean moveable, boolean isNumber) { this.title = text; this.width = width; this.alignment = alignment; this.resizable = resizable; this.moveable = moveable; this.isNumber = isNumber; } public String getTitle() { return title; } public int getAlignment() { return alignment; } public boolean isResizable() { return resizable; } public boolean isMoveable() { return moveable; } public int getWidth() { return width; } public boolean isNumber() { return this.isNumber; } } }