diff --git a/api/src/com/cloud/vm/VirtualMachineProfiler.java b/api/src/com/cloud/vm/VirtualMachineProfiler.java
new file mode 100644
index 00000000000..09e1dcc7f11
--- /dev/null
+++ b/api/src/com/cloud/vm/VirtualMachineProfiler.java
@@ -0,0 +1,13 @@
+/**
+ * 
+ */
+package com.cloud.vm;
+
+import com.cloud.offering.ServiceOffering;
+import com.cloud.template.VirtualMachineTemplate;
+import com.cloud.utils.component.Adapter;
+
+public interface VirtualMachineProfiler extends Adapter {
+    
+    VmCharacteristics convert(ServiceOffering offering, VirtualMachineTemplate template);
+}
diff --git a/utils/src/com/cloud/utils/Journal.java b/utils/src/com/cloud/utils/Journal.java
new file mode 100644
index 00000000000..b27f14f7bc3
--- /dev/null
+++ b/utils/src/com/cloud/utils/Journal.java
@@ -0,0 +1,88 @@
+/**
+ * 
+ */
+package com.cloud.utils;
+
+import java.util.ArrayList;
+
+import org.apache.log4j.Level;
+import org.apache.log4j.Logger;
+
+/**
+ * Journal is used to kept what has happened during a process so someone can track 
+ * what happens during a process.
+ *
+ */
+public class Journal {
+    String _name;
+    ArrayList<Pair<String, Object[]>> _entries;
+    
+    public Journal(String name) {
+        _name = name;
+        _entries = new ArrayList<Pair<String, Object[]>>();
+    }
+    
+    
+    final private void log(String msg, Object... params) {
+        Pair<String, Object[]> entry = new Pair<String, Object[]>(msg, params);
+        assert msg != null : "Message can not be null or else it's useless!";
+        _entries.add(entry);
+    }
+    
+    public void record(String msg, Object... params) {
+        log(msg, params);
+    }
+    
+    public void record(Logger logger, Level p, String msg, Object... params) {
+        if (logger.getLevel().isGreaterOrEqual(p)) {
+            StringBuilder buf = new StringBuilder();
+            toString(buf, msg, params);
+            String entry = buf.toString();
+            log(entry);
+            logger.log(p, entry);
+        } else {
+            log(msg, params);
+        }
+    }
+    
+    protected void toString(StringBuilder buf, String msg, Object[] params) {
+        buf.append(msg);
+        if (params != null) {
+            buf.append(" - ");
+            int i = 0;
+            for (Object obj : params) {
+                buf.append('P').append(i).append('=');
+                buf.append(obj != null ? obj.toString() : "null");
+                buf.append(", ");
+            }
+            buf.delete(buf.length() - 2, buf.length());
+        }
+    }
+    
+    public String toString(String separator) {
+        StringBuilder buf = new StringBuilder(_name).append(": ");
+        for (Pair<String, Object[]> entry : _entries) {
+            toString(buf, entry.first(), entry.second());
+            buf.append(separator);
+        }
+        return buf.toString();
+    }
+    
+    @Override
+    public String toString() {
+        return toString("; ");
+    }
+    
+    public static class LogJournal extends Journal {
+        Logger _logger;
+        public LogJournal(String name, Logger logger) {
+            super(name);
+            _logger = logger;
+        }
+        
+        @Override
+        public void record(String msg, Object... params) {
+            record(_logger, Level.DEBUG, msg, params);
+        }
+    }
+}
diff --git a/utils/src/com/cloud/utils/component/Injector.java b/utils/src/com/cloud/utils/component/Injector.java
new file mode 100644
index 00000000000..e278ab5ba08
--- /dev/null
+++ b/utils/src/com/cloud/utils/component/Injector.java
@@ -0,0 +1,19 @@
+/**
+ * 
+ */
+package com.cloud.utils.component;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.AnnotatedElement;
+
+/**
+ *  Injector implements customized Injectors for ComponentLocator.
+ *
+ */
+public interface Injector {
+    /**
+     * Can this injector handle injecting into this type of class?
+     */
+    boolean canInject(AnnotatedElement element, Annotation ann);
+
+}