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/*******************************************************************************
* Copyright (c) 2004, 2016 Red Hat, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Kent Sebastian <ksebasti@redhat.com> - initial API and implementation
* Keith Seitz <keiths@redhat.com> - much of the code in the LogReader class
*******************************************************************************/
package org.eclipse.linuxtools.internal.oprofile.ui.view;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.linuxtools.internal.oprofile.core.Oprofile;
import org.eclipse.linuxtools.internal.oprofile.ui.OprofileUiMessages;
import org.eclipse.linuxtools.profiling.launch.IRemoteFileProxy;
import org.eclipse.linuxtools.profiling.launch.RemoteProxyManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Layout;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.PlatformUI;
/**
* Log reader action. Reads /var/lib/oprofile/samples/oprofiled.log and displays
* it in a nice dialog. Although the log is of dubious utility, it might be useful
* to some.
*/
public class OprofileViewLogReaderAction extends Action {
public OprofileViewLogReaderAction() {
super(OprofileUiMessages.getString("view.actions.logreader.label")); //$NON-NLS-1$
}
@Override
public void run() {
Shell activeShell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
LogReader log = new LogReader();
try {
new ProgressMonitorDialog(activeShell).run(true, false, log);
} catch (InvocationTargetException|InterruptedException e) {
e.printStackTrace();
}
//open custom log dialog
OprofiledLogDialog odlg = new OprofiledLogDialog(activeShell, log.getLogContents());
odlg.open();
}
}
/**
* A Runnable to read oprofiled's logfile
*/
class LogReader implements Runnable, IRunnableWithProgress {
private static long lastModified = -1;
private static String contents = null;
@Override
public void run() {
try {
IRemoteFileProxy proxy = RemoteProxyManager.getInstance().getFileProxy(
Oprofile.OprofileProject.getProject());
IFileStore fileStore = proxy.getResource(Oprofile.getLogFile());
if (fileStore.fetchInfo().exists()) {
long modified = fileStore.fetchInfo().getLastModified();
// only reread it if it has been modified since the last run
if (modified != lastModified) {
lastModified = modified;
contents = ""; //$NON-NLS-1$
}
try (InputStream is = fileStore.openInputStream(EFS.NONE,
new NullProgressMonitor());
BufferedReader bi = new BufferedReader(
new InputStreamReader(is))) {
String line;
while ((line = bi.readLine()) != null) {
contents += line + "\n"; //$NON-NLS-1$
}
bi.close();
}
}
} catch (FileNotFoundException e) {
// The file doesn't exist or was erased. Try again next time.
contents = OprofileUiMessages
.getString("oprofiled.logreader.error.fileNotFound"); //$NON-NLS-1$
} catch (IOException e) {
// Error reading log. Try again next time.
lastModified = 0;
contents = OprofileUiMessages
.getString("oprofiled.logreader.error.io"); //$NON-NLS-1$
} catch (CoreException e) {
e.printStackTrace();
}
}
public String getLogContents() {
return contents;
}
@Override
public void run(IProgressMonitor monitor) {
this.run();
}
}
/**
* A custom dialog box to display the oprofiled log file.
*/
class OprofiledLogDialog extends MessageDialog {
//string to contain the log file
private String textContent = null;
public static final int GRID_WIDTH = 350;
public static final int GRID_HEIGHT = 400;
public OprofiledLogDialog (Shell parentShell, String dialogMessage) {
super(parentShell, OprofileUiMessages.getString("oprofiled.logreader.dialog.title"), null, null, MessageDialog.NONE, new String[] { IDialogConstants.OK_LABEL }, 0); //$NON-NLS-1$
textContent = dialogMessage;
}
@Override
protected Control createCustomArea(Composite parent) {
Composite area = new Composite(parent, 0);
Layout layout = new GridLayout(1, true);
GridData gd = new GridData(GRID_WIDTH, GRID_HEIGHT);
area.setLayout(layout);
area.setLayoutData(gd);
Text txt = new Text(area, SWT.READ_ONLY | SWT.MULTI | SWT.V_SCROLL | SWT.BORDER);
//Check if the textContent isn't null
if (textContent != null){
txt.setText(textContent);
}
txt.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
return area;
}
}
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