1 files changed, 126 insertions, 0 deletions
diff --git a/src/com/kenai/jbosh/HTTPExchange.java b/src/com/kenai/jbosh/HTTPExchange.java
new file mode 100644
index 0000000..c77caf0
--- /dev/null
+++ b/src/com/kenai/jbosh/HTTPExchange.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2009 Mike Cumings
+ *
+ * Licensed 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 com.kenai.jbosh;
+
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * A request and response pair representing a single exchange with a remote
+ * content manager.  This is primarily a container class intended to maintain
+ * the relationship between the request and response but allows the response
+ * to be added after the fact.
+ */
+final class HTTPExchange {
+
+    /**
+     * Logger.
+     */
+    private static final Logger LOG =
+            Logger.getLogger(HTTPExchange.class.getName());
+    
+    /**
+     * Request body.
+     */
+    private final AbstractBody request;
+
+    /**
+     * Lock instance used to protect and provide conditions.
+     */
+    private final Lock lock = new ReentrantLock();
+
+    /**
+     * Condition used to signal when the response has been set.
+     */
+    private final Condition ready = lock.newCondition();
+
+    /**
+     * HTTPResponse instance.
+     */
+    private HTTPResponse response;
+
+    ///////////////////////////////////////////////////////////////////////////
+    // Constructor:
+
+    /**
+     * Create a new request/response pair object.
+     *
+     * @param req request message body
+     */
+    HTTPExchange(final AbstractBody req) {
+        if (req == null) {
+            throw(new IllegalArgumentException("Request body cannot be null"));
+        }
+        request = req;
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+    // Package-private methods:
+
+    /**
+     * Get the original request message.
+     *
+     * @return request message body.
+     */
+    AbstractBody getRequest() {
+        return request;
+    }
+
+    /**
+     * Set the HTTPResponse instance.
+     *
+     * @return HTTPResponse instance associated with the request.
+     */
+    void setHTTPResponse(HTTPResponse resp) {
+        lock.lock();
+        try {
+            if (response != null) {
+                throw(new IllegalStateException(
+                        "HTTPResponse was already set"));
+            }
+            response = resp;
+            ready.signalAll();
+        } finally {
+            lock.unlock();
+        }
+    }
+
+    /**
+     * Get the HTTPResponse instance.
+     *
+     * @return HTTPResponse instance associated with the request.
+     */
+    HTTPResponse getHTTPResponse() {
+        lock.lock();
+        try {
+            while (response == null) {
+                try {
+                    ready.await();
+                } catch (InterruptedException intx) {
+                    LOG.log(Level.FINEST, "Interrupted", intx);
+                }
+            }
+            return response;
+        } finally {
+            lock.unlock();
+        }
+    }
+
+}