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[448400] [dstore] automatically fallback to exec(hostname) if no

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hostname detected and print message if needed
This commit is contained in:
Dave McKnight 2014-10-22 12:24:52 -04:00
parent d6a3c90c95
commit 0103923695
1 changed files with 119 additions and 119 deletions
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238
rse/plugins/org.eclipse.dstore.core/src/org/eclipse/dstore/internal/core/server/ServerAttributes.java
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@ -1,120 +1,120 @@
/******************************************************************************* /*******************************************************************************
* Copyright (c) 2002, 2014 IBM Corporation and others. * Copyright (c) 2002, 2014 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials * All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0 * are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at * which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html * http://www.eclipse.org/legal/epl-v10.html
* *
* Initial Contributors: * Initial Contributors:
* The following IBM employees contributed to the Remote System Explorer * The following IBM employees contributed to the Remote System Explorer
* component that contains this file: David McKnight, Kushal Munir, * component that contains this file: David McKnight, Kushal Munir,
* Michael Berger, David Dykstal, Phil Coulthard, Don Yantzi, Eric Simpson, * Michael Berger, David Dykstal, Phil Coulthard, Don Yantzi, Eric Simpson,
* Emily Bruner, Mazen Faraj, Adrian Storisteanu, Li Ding, and Kent Hawley. * Emily Bruner, Mazen Faraj, Adrian Storisteanu, Li Ding, and Kent Hawley.
* *
* Contributors: * Contributors:
* David McKnight (IBM) - [283613] [dstore] Create a Constants File for all System Properties we support * David McKnight (IBM) - [283613] [dstore] Create a Constants File for all System Properties we support
* David McKnight (IBM) - [388472] [dstore] need alternative option for getting at server hostname * David McKnight (IBM) - [388472] [dstore] need alternative option for getting at server hostname
* David McKnight (IBM) - [448400] [dstore] automatically fallback to exec(hostname) if no hostname detected and print message if needed * David McKnight (IBM) - [448400] [dstore] automatically fallback to exec(hostname) if no hostname detected and print message if needed
*******************************************************************************/ *******************************************************************************/
package org.eclipse.dstore.internal.core.server; package org.eclipse.dstore.internal.core.server;
import java.io.BufferedReader; import java.io.BufferedReader;
import java.io.File; import java.io.File;
import java.io.IOException; import java.io.IOException;
import java.io.InputStream; import java.io.InputStream;
import java.io.InputStreamReader; import java.io.InputStreamReader;
import java.net.InetAddress; import java.net.InetAddress;
import java.net.UnknownHostException; import java.net.UnknownHostException;
import org.eclipse.dstore.core.model.DataStoreAttributes; import org.eclipse.dstore.core.model.DataStoreAttributes;
import org.eclipse.dstore.internal.core.model.IDataStoreSystemProperties; import org.eclipse.dstore.internal.core.model.IDataStoreSystemProperties;
/** /**
* This class is used to store attributes that are required * This class is used to store attributes that are required
* for configurating a remote connection. * for configurating a remote connection.
*/ */
public class ServerAttributes extends DataStoreAttributes public class ServerAttributes extends DataStoreAttributes
{ {
/** /**
* Constructor * Constructor
*/ */
public ServerAttributes() public ServerAttributes()
{ {
super(); super();
String pluginPath = System.getProperty(IDataStoreSystemProperties.A_PLUGIN_PATH); String pluginPath = System.getProperty(IDataStoreSystemProperties.A_PLUGIN_PATH);
if (pluginPath != null) pluginPath = pluginPath.trim(); if (pluginPath != null) pluginPath = pluginPath.trim();
if ((pluginPath != null) && (pluginPath.length() > 0)) if ((pluginPath != null) && (pluginPath.length() > 0))
{ {
File f = new File(pluginPath); File f = new File(pluginPath);
try try
{ {
pluginPath = f.getCanonicalPath(); pluginPath = f.getCanonicalPath();
} }
catch (Exception e) catch (Exception e)
{ {
pluginPath = f.getAbsolutePath(); pluginPath = f.getAbsolutePath();
} }
setAttribute(A_PLUGIN_PATH, pluginPath + File.separator); setAttribute(A_PLUGIN_PATH, pluginPath + File.separator);
} }
else else
{ {
setAttribute(A_PLUGIN_PATH, "/home/"); //$NON-NLS-1$ setAttribute(A_PLUGIN_PATH, "/home/"); //$NON-NLS-1$
} }
setAttribute(A_LOCAL_NAME, getHostName()); setAttribute(A_LOCAL_NAME, getHostName());
setAttribute(A_HOST_NAME, "server_host"); //$NON-NLS-1$ setAttribute(A_HOST_NAME, "server_host"); //$NON-NLS-1$
setAttribute(A_HOST_PATH, "/home/"); //$NON-NLS-1$ setAttribute(A_HOST_PATH, "/home/"); //$NON-NLS-1$
} }
/** /**
* Returns the server hostname, avoiding use of InetAddress.getLocalHost().getHostName() if possible * Returns the server hostname, avoiding use of InetAddress.getLocalHost().getHostName() if possible
* @return the hostname * @return the hostname
*/ */
public static String getHostName(){ public static String getHostName(){
String hostname = System.getProperty("hostname"); //$NON-NLS-1$ String hostname = System.getProperty("hostname"); //$NON-NLS-1$
if (hostname == null || hostname.length() == 0){ if (hostname == null || hostname.length() == 0){
String readHostname = System.getProperty("read.hostname"); //$NON-NLS-1$ String readHostname = System.getProperty("read.hostname"); //$NON-NLS-1$
if (readHostname != null && readHostname.equals("true")){ //$NON-NLS-1$ if (readHostname != null && readHostname.equals("true")){ //$NON-NLS-1$
try { try {
Process p = Runtime.getRuntime().exec("hostname"); //$NON-NLS-1$ Process p = Runtime.getRuntime().exec("hostname"); //$NON-NLS-1$
InputStream inStream = p.getInputStream(); InputStream inStream = p.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inStream)); BufferedReader reader = new BufferedReader(new InputStreamReader(inStream));
hostname = reader.readLine(); hostname = reader.readLine();
} catch (IOException e) { } catch (IOException e) {
} }
} }
if (hostname == null || hostname.length() == 0){ // still no hostname if (hostname == null || hostname.length() == 0){ // still no hostname
try { try {
hostname = InetAddress.getLocalHost().getHostName(); hostname = InetAddress.getLocalHost().getHostName();
} catch (UnknownHostException e) { } catch (UnknownHostException e) {
} }
} }
if (hostname == null){ if (hostname == null){
// fall back to reading hostname from shell // fall back to reading hostname from shell
try { try {
Process p = Runtime.getRuntime().exec("hostname"); //$NON-NLS-1$ Process p = Runtime.getRuntime().exec("hostname"); //$NON-NLS-1$
InputStream inStream = p.getInputStream(); InputStream inStream = p.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inStream)); BufferedReader reader = new BufferedReader(new InputStreamReader(inStream));
hostname = reader.readLine(); hostname = reader.readLine();
} catch (IOException e) { } catch (IOException e) {
} }
} }
if (hostname != null && hostname.length() > 0){ if (hostname != null && hostname.length() > 0){
// set this so we don't have to do it again // set this so we don't have to do it again
System.setProperty("hostname", hostname); //$NON-NLS-1$ System.setProperty("hostname", hostname); //$NON-NLS-1$
} }
else { else {
System.err.println("The server can not resolve the hostname. There may be a problem with the host DNS settings. This can be worked around by using the following JVM option with the server: -Dhostname=<hostname>"); System.err.println("The server can not resolve the hostname. There may be a problem with the host DNS settings. This can be worked around by using the following JVM option with the server: -Dhostname=<hostname>");
hostname =""; hostname ="";
} }
} }
return hostname; return hostname;
} }
} }