moving the code from Computer to EnvVars.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@6777 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/EnvVars.java

 package hudson;
 
+import hudson.remoting.VirtualChannel;
+import hudson.remoting.Callable;
+
 import java.io.File;
 import java.io.Serializable;
+import java.io.IOException;
 import java.util.Map;
 import java.util.TreeMap;
 import java.util.Comparator;
+import java.util.Collections;
 
 /**
  * Environment variables.
@@ -61,6 +66,26 @@ public class EnvVars extends TreeMap<String,String> {
         }
     }
 
+    /**
+     * Obtains the environment variables of a remote peer.
+     *
+     * @param channel
+     *      Can be null, in which case the map indicating "N/A" will be returned.
+     */
+    public static Map<String,String> getRemote(VirtualChannel channel) throws IOException, InterruptedException {
+        if(channel==null)
+            return Collections.singletonMap("N/A","N/A");
+        return new EnvVars(channel.call(new GetEnvVars()));
+    }
+
+    private static final class GetEnvVars implements Callable<Map<String,String>,RuntimeException> {
+        public Map<String,String> call() {
+            return new TreeMap<String,String>(EnvVars.masterEnvVars);
+        }
+        private static final long serialVersionUID = 1L;
+    }
+
+
     /**
      * Compares strings case insensitively.
      */

core/src/main/java/hudson/model/Computer.java

@@ -272,17 +272,7 @@ public abstract class Computer extends AbstractModelObject {
      * If this is the master, it returns the system property of the master computer.
      */
     public Map<String,String> getEnvVars() throws IOException, InterruptedException {
-        VirtualChannel channel = getChannel();
-        if(channel==null)
-            return Collections.singletonMap("N/A","N/A");
-        return channel.call(new GetEnvVars());
-    }
-
-    private static final class GetEnvVars implements Callable<Map<String,String>,RuntimeException> {
-        public Map<String,String> call() {
-            return new TreeMap<String,String>(EnvVars.masterEnvVars);
-        }
-        private static final long serialVersionUID = 1L;
+        return EnvVars.getRemote(getChannel());
     }
 
     /**