1 files changed, 56 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/kernel/2.0-alpha-incubating/spi/src/main/java/org/apache/tuscany/spi/wire/MessageId.java b/sca-java-1.x/tags/kernel/2.0-alpha-incubating/spi/src/main/java/org/apache/tuscany/spi/wire/MessageId.java
new file mode 100644
index 0000000000..f179eb79b1
--- /dev/null
+++ b/sca-java-1.x/tags/kernel/2.0-alpha-incubating/spi/src/main/java/org/apache/tuscany/spi/wire/MessageId.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.spi.wire;
+
+/**
+ * A unique identifier for a message flowing on a wire, potentially end-to-end (ie, through more than one SCAObject to
+ * SCAObject hop).
+ */
+public class MessageId {
+
+    private long timestamp;
+
+    public MessageId() {
+        this.timestamp = System.currentTimeMillis();
+    }
+
+    public long getTimestamp() {
+        return timestamp;
+    }
+
+    public String toString() {
+        return "MsgId[" + timestamp + "]";
+    }
+
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        final MessageId messageId = (MessageId) o;
+        return timestamp == messageId.timestamp;
+    }
+
+    public int hashCode() {
+        return (int) (timestamp ^ (timestamp >>> 32));
+    }
+}