JBDS-4132 Could not load nodeJSInstall: node-v0.10.22-linux-x86_64

The destination directory for unpacking the Node.js runtime is changed
from <tern.eclipse.ide.server.nodejs.embed.<os<.distribution>>.<platform>>/<node.js rintime zip-filename>
to <User's workspace>/.metadata/.plugins/<tern.eclipse.ide.server.nodejs.embed.<os<.distribution>>.<platform>>/<node.js rintime zip-filename>
in order to prevent the attempts to extract the runtime zip-archive into the directories with
restricted access rights.

See: https://issues.jboss.org/browse/JBDS-4132
Issue: #441 Could not load nodeJSInstall: node-v0.10.22-linux-x86_64
Signed-off-by: Victor Rubezhny <vrubezhny@redhat.com>

Author: vrubezhny

eclipse/tern.eclipse.ide.server.nodejs.core/src/tern/eclipse/ide/server/nodejs/internal/core/NodejsInstall.java

@@ -14,15 +14,18 @@
 import java.io.File;
 import java.io.IOException;
 
+import org.eclipse.core.internal.runtime.InternalPlatform;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.FileLocator;
 import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Platform;
 
 import tern.eclipse.ide.server.nodejs.core.INodejsInstall;
 import tern.eclipse.ide.server.nodejs.core.INodejsInstallProvider;
 import tern.utils.ZipUtils;
 
+@SuppressWarnings("restriction")
 public class NodejsInstall implements INodejsInstall {
 
 	private String id;
@@ -56,23 +59,31 @@ private void createClass(IConfigurationElement element) throws IOException {
 			String pluginId = element.getNamespaceIdentifier();
 			String path = element.getAttribute("path");
 			if (path != null && path.length() > 0) {
-				File baseDir = FileLocator.getBundleFile(Platform
+				File bundleDir = FileLocator.getBundleFile(Platform
 						.getBundle(pluginId));
-				this.path = new File(baseDir, path);
-	
-				// check if path exists, if it doesn't look for zip
-				if (!this.path.exists()) {
-					String zip = element.getAttribute("zip");
-	
-					File zipFile = new File(baseDir, zip);
-	
-					if (zipFile.exists()) {
-						if (zipFile.getName().toLowerCase().endsWith(".zip")) {
-							ZipUtils.extract(zipFile, baseDir);
-						}
+				
+				IPath stateLocationPath = InternalPlatform.getDefault().getStateLocation(Platform
+						.getBundle(pluginId));
+				
+				if (stateLocationPath != null) {
+					File baseDir = stateLocationPath.toFile();
 
-						if(this.path.exists()) {
-							this.path.setExecutable(true);
+					this.path = new File(baseDir, path);
+		
+					// check if path exists, if it doesn't look for zip
+					if (!this.path.exists()) {
+						String zip = element.getAttribute("zip");
+		
+						File zipFile = new File(bundleDir, zip);
+		
+						if (zipFile.exists()) {
+							if (zipFile.getName().toLowerCase().endsWith(".zip")) {
+								ZipUtils.extract(zipFile, baseDir);
+							}
+		
+							if(this.path.exists()) {
+								this.path.setExecutable(true);
+							}
 						}
 					}
 				}