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/*******************************************************************************
* Copyright (c) 2005, 2018 IBM Corporation and others.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Red Hat Inc. - modify to use with RDT
*******************************************************************************/
package org.eclipse.linuxtools.internal.rdt.proxy;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.Arrays;
import java.util.Map;
import org.eclipse.cdt.utils.pty.PTY;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.linuxtools.profiling.launch.IRemoteCommandLauncher;
import org.eclipse.remote.core.IRemoteConnection;
import org.eclipse.remote.core.IRemoteFileService;
import org.eclipse.remote.core.IRemoteProcess;
import org.eclipse.remote.core.IRemoteProcessBuilder;
import org.eclipse.remote.core.IRemoteProcessService;
import org.eclipse.remote.core.IRemoteResource;
import org.eclipse.remote.core.RemoteProcessAdapter;
import org.eclipse.remote.core.exception.RemoteConnectionException;
/**
* @noextend This class is not intended to be subclassed by clients.
*/
public class RDTCommandLauncher implements IRemoteCommandLauncher {
private IRemoteProcess fProcess;
private boolean fShowCommand;
private String[] fCommandArgs;
private String fErrorMessage = ""; //$NON-NLS-1$
private String lineSeparator;
private URI uri;
/**
* The number of milliseconds to pause between polling.
*/
private static final long DELAY = 50L;
/**
* Creates a new launcher Fills in stderr and stdout output to the given
* streams. Streams can be set to <code>null</code>, if output not
* required
*/
public RDTCommandLauncher(IProject project) {
fProcess = null;
fShowCommand = false;
try {
if (project.hasNature(RDTProxyManager.SYNC_NATURE)) {
IRemoteResource remoteRes = project.getAdapter(IRemoteResource.class);
uri = remoteRes.getActiveLocationURI();
} else{
uri = project.getLocationURI();
}
} catch (CoreException e) {
uri = project.getLocationURI();
}
lineSeparator = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Creates a new launcher Fills in stderr and stdout output to the given
* streams. Streams can be set to <code>null</code>, if output not
* required
*/
public RDTCommandLauncher(URI uri) {
fProcess = null;
fShowCommand = false;
this.uri = uri;
lineSeparator = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
}
@Override
public String getErrorMessage() {
return fErrorMessage;
}
private String[] getCommandArgs() {
return fCommandArgs;
}
/**
* Constructs a command array that will be passed to the process
*/
private static String[] constructCommandArray(String command, String[] commandArgs) {
String[] args = new String[1 + commandArgs.length];
args[0] = command;
System.arraycopy(commandArgs, 0, args, 1, commandArgs.length);
return args;
}
@Override
public Process execute(IPath commandPath, String[] args, String[] env, IPath changeToDirectory, IProgressMonitor monitor, PTY pty) {
try {
// add platform specific arguments (shell invocation)
fCommandArgs = constructCommandArray(commandPath.toOSString(), args);
fShowCommand = true;
IRemoteConnection connection = RDTProxyManager.getConnection(uri);
if (connection == null) {
fErrorMessage = Messages.RDTCommandLauncher_connection_not_found;
return null;
} else if (!connection.isOpen()) {
try {
connection.open(monitor);
} catch (RemoteConnectionException e) {
fErrorMessage = e.getMessage();
return null;
}
}
IRemoteProcessService ps = connection.getService(IRemoteProcessService.class);
IRemoteProcessBuilder builder = ps.getProcessBuilder(Arrays.asList(fCommandArgs));
if (changeToDirectory != null) {
IRemoteFileService fm = connection.getService(IRemoteFileService.class);
builder.directory(fm.getResource(changeToDirectory.toString()));
}
Map<String,String> envMap = builder.environment();
for (int i = 0; i < env.length; ++i) {
String s = env[i];
String[] tokens = s.split("=", 2); //$NON-NLS-1$
switch (tokens.length) {
case 1:
envMap.put(tokens[0], null);
break;
case 2:
envMap.put(tokens[0], tokens[1]);
break;
default:
Activator.log(IStatus.WARNING, Messages.RDTCommandLauncher_malformed_env_var_string + s);
}
}
fProcess = builder.start();
fErrorMessage = ""; //$NON-NLS-1$
} catch (IOException e) {
fErrorMessage = e.getMessage();
return null;
}
return new RemoteProcessAdapter(fProcess);
}
@Override
public int waitAndRead(OutputStream output, OutputStream err, IProgressMonitor monitor) {
if (fShowCommand) {
printCommandLine(output);
}
if (fProcess == null) {
return ILLEGAL_COMMAND;
}
RemoteProcessClosure closure = new RemoteProcessClosure(fProcess, output, err);
closure.runNonBlocking();
while (!monitor.isCanceled() && closure.isAlive()) {
try {
Thread.sleep(DELAY);
} catch (InterruptedException ie) {
// ignore
}
}
int state = OK;
// Operation canceled by the user, terminate abnormally.
if (monitor.isCanceled()) {
closure.terminate();
state = COMMAND_CANCELED;
fErrorMessage = Activator.getResourceString("CommandLauncher.error.commandCanceled"); //$NON-NLS-1$
}
try {
fProcess.waitFor();
} catch (InterruptedException e) {
// ignore
}
return state;
}
private void printCommandLine(OutputStream os) {
if (os != null) {
String cmd = getCommandLine(getCommandArgs());
try {
os.write(cmd.getBytes());
os.flush();
} catch (IOException e) {
// ignore;
}
}
}
private String getCommandLine(String[] commandArgs) {
StringBuilder buf = new StringBuilder();
if (fCommandArgs != null) {
for (String commandArg : commandArgs) {
buf.append(commandArg);
buf.append(' ');
}
buf.append(lineSeparator);
}
return buf.toString();
}
@Override
public Process execute(IPath commandPath, String[] args, String[] env,
IPath changeToDirectory, IProgressMonitor monitor) {
return execute(commandPath, args, env, changeToDirectory, monitor, null);
}
}
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