first pass at the 0.4 architecture. not ready for use or integration yet, but is functional with some manual build/config work

apps/routerconsole/java/src/net/i2p/router/web/LogsHelper.java

@@ -0,0 +1,42 @@
+package net.i2p.router.web;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.List;
+
+import net.i2p.router.RouterContext;
+
+public class LogsHelper {
+    private RouterContext _context;
+    /**
+     * Configure this bean to query a particular router context
+     *
+     * @param contextId begging few characters of the routerHash, or null to pick
+     *                  the first one we come across.
+     */
+    public void setContextId(String contextId) {
+        try {
+            _context = ContextHelper.getContext(contextId);
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+    }
+    
+    public LogsHelper() {}
+    
+    public String getLogs() {
+        List msgs = _context.logManager().getBuffer().getMostRecentMessages();
+        StringBuffer buf = new StringBuffer(16*1024); 
+        buf.append("<h2>Most recent console messages:</h2><ul>");
+        buf.append("<code>\n");
+        for (int i = 0; i < msgs.size(); i++) { 
+            String msg = (String)msgs.get(i);
+            buf.append("<li>");
+            buf.append(msg);
+            buf.append("</li>\n");
+        }
+        buf.append("</code></ul>\n");
+        
+        return buf.toString();
+    }
+}