[FIXED HUDSON-1841] proxy setting shouldn't be global to JVM.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@10078 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/ProxyConfiguration.java

@@ -0,0 +1,51 @@
+package hudson;
+
+import com.thoughtworks.xstream.XStream;
+import hudson.model.Hudson;
+import hudson.util.XStream2;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+
+/**
+ * HTTP proxy configuration.
+ *
+ * @see Hudson#proxy
+ */
+public final class ProxyConfiguration {
+    public final String name;
+    public final int port;
+
+    public ProxyConfiguration(String name, int port) {
+        this.name = name;
+        this.port = port;
+    }
+
+    public Proxy createProxy() {
+        return new Proxy(Proxy.Type.HTTP, new InetSocketAddress(name,port));
+    }
+
+    public void save() throws IOException {
+        getXmlFile().write(this);
+    }
+
+    public static XmlFile getXmlFile() {
+        return new XmlFile(XSTREAM, new File(Hudson.getInstance().getRootDir(), "proxy.xml"));
+    }
+
+    public static ProxyConfiguration load() throws IOException {
+        XmlFile f = getXmlFile();
+        if(f.exists())
+            return (ProxyConfiguration) f.read();
+        else
+            return null;
+    }
+
+    private static final XStream XSTREAM = new XStream2();
+
+    static {
+        XSTREAM.alias("proxy", ProxyConfiguration.class);
+    }
+}