Add an XMPP message sender component that only connects to an XMPP server as needed just before sending a message to avoid unnecessary connects / disconnects in a dynamic virtual host environment. Add another component that does an HTTP delete.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1094212 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 115 insertions, 0 deletions

diff --git a/sca-cpp/trunk/components/chat/chat-sender2.cpp b/sca-cpp/trunk/components/chat/chat-sender2.cpp
new file mode 100644
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+++ b/sca-cpp/trunk/components/chat/chat-sender2.cpp
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+/*
+ * 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.
+ */
+
+/* $Rev$ $Date$ */
+
+/**
+ * XMPP chat sender component implementation.
+ * This sender gets its configuration from a single property and its
+ * input data from component references instead of function parameters.
+ */
+
+#include "string.hpp"
+#include "function.hpp"
+#include "list.hpp"
+#include "value.hpp"
+#include "monad.hpp"
+#include "parallel.hpp"
+#include "xmpp.hpp"
+
+namespace tuscany {
+namespace chat {
+namespace sender {
+
+/**
+ * Post an item to an XMPP JID.
+ */
+const failable<value> post(const lambda<value(const list<value>&)> jid, const lambda<value(const list<value>&)> pass, const lambda<value(const list<value>&)> to, const lambda<value(const list<value>&)> msg, const list<value>& params) {
+
+    const value vjid = jid(mklist<value>("get", params));
+    const value vpass = pass(mklist<value>("get", params));
+    const value vto = to(mklist<value>("get", params));
+    const value vmsg = msg(mklist<value>("get", params));
+    debug(vjid, "chat::post::from");
+    debug(vto, "chat::post::to");
+    debug(vmsg, "chat::post::value");
+
+    // Create an XMPP client session
+    XMPPClient xc(vjid, vpass);
+    const failable<bool> c = connect(xc);
+    if (!hasContent(c))
+        return mkfailure<value>(reason(c));
+
+    // Post the message
+    const failable<bool> r = post(vto, vmsg, xc);
+    if (!hasContent(r))
+        return mkfailure<value>(reason(r));
+    return value(mklist<value>(vto));
+}
+
+/**
+ * Chat sender component lambda function
+ */
+class chatSender {
+public:
+    chatSender(const lambda<value(const list<value>&)> jid, const lambda<value(const list<value>&)> pass, const lambda<value(const list<value>&)> to, const lambda<value(const list<value>&)> msg) : jid(jid), pass(pass), to(to), msg(msg) {
+    }
+
+    const value operator()(const list<value>& params) const {
+        const tuscany::value func(car(params));
+        if (func == "get")
+            return post(jid, pass, to, msg, cdr(params));
+
+        // Stop the chat sender component
+        if (func != "stop")
+            return tuscany::mkfailure<tuscany::value>();
+        debug("chat::sender::stop");
+        return failable<value>(value(lambda<value(const list<value>&)>()));
+    }
+
+private:
+    const lambda<value(const list<value>&)> jid;
+    const lambda<value(const list<value>&)> pass;
+    const lambda<value(const list<value>&)> to;
+    const lambda<value(const list<value>&)> msg;
+};
+
+/**
+ * Start the component.
+ */
+const failable<value> start(const list<value>& params) {
+
+    // Return the chat sender component lambda function
+    return value(lambda<value(const list<value>&)>(chatSender(car(params), cadr(params), caddr(params), cadddr(params))));
+}
+
+}
+}
+}
+
+extern "C" {
+
+const tuscany::value apply(const tuscany::list<tuscany::value>& params) {
+    const tuscany::value func(car(params));
+    if (func == "start")
+        return tuscany::chat::sender::start(cdr(params));
+    return tuscany::mkfailure<tuscany::value>();
+}
+
+}