From c9bfccc35345ce58fb5774d4b0b6a9868b262c0a Mon Sep 17 00:00:00 2001
From: giorgio <giorgio@13f79535-47bb-0310-9956-ffa450edef68>
Date: Wed, 5 Sep 2012 08:31:30 +0000
Subject: git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1381061
 13f79535-47bb-0310-9956-ffa450edef68

---
 .../lightweight-sca/components/log/logger.cpp      | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 sca-cpp/branches/lightweight-sca/components/log/logger.cpp

(limited to 'sca-cpp/branches/lightweight-sca/components/log/logger.cpp')

diff --git a/sca-cpp/branches/lightweight-sca/components/log/logger.cpp b/sca-cpp/branches/lightweight-sca/components/log/logger.cpp
new file mode 100644
index 0000000000..d7969036ab
--- /dev/null
+++ b/sca-cpp/branches/lightweight-sca/components/log/logger.cpp
@@ -0,0 +1,97 @@
+/*
+ * 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.
+ */
+
+/* $Rev$ $Date$ */
+
+/**
+ * Scribe-based logger component implementation, used to intercept
+ * and log service invocations.
+ */
+
+#define WANT_HTTPD_LOG 1
+#include "string.hpp"
+#include "function.hpp"
+#include "list.hpp"
+#include "value.hpp"
+#include "monad.hpp"
+#include "../../modules/http/http.hpp"
+#include "scribe.hpp"
+
+namespace tuscany {
+namespace logger {
+
+/**
+ * Component implementation lambda function.
+ */
+class applyLog {
+public:
+    applyLog(const lambda<value(const list<value>&)>& relay, const value& host, const value& category, scribe::Scribe& sc) : relay(relay), host(host), category(category), sc(sc) {
+    }
+
+    const value operator()(const list<value>& params) const {
+        // Log the function params
+        debug(params, "logger::apply::params");
+        scribe::log(params, host, category, sc);
+
+        // Relay the function call
+        const failable<value> res = relay(params);
+
+        // Log the result
+        scribe::log(res, host, category, sc);
+        return res;
+    }
+
+private:
+    const lambda<value(const list<value>&)> relay;
+    const value host;
+    const value category;
+    scribe::Scribe& sc;
+};
+
+/**
+ * Start the component.
+ */
+const failable<value> start(const list<value>& params) {
+    // Connect to Scribe
+    scribe::Scribe& sc = *(new (gc_new<scribe::Scribe>()) scribe::Scribe("localhost", 1464));
+
+    // Extract the configured relay service and category
+    const value rel = car(params);
+    const value host = ((lambda<value(const list<value>&)>)cadr(params))(list<value>());
+    const value category = ((lambda<value(const list<value>&)>)caddr(params))(list<value>());
+    debug(host, "logger::start::host");
+    debug(category, "logger::start::category");
+
+    // Return the component implementation lambda function
+    return value(lambda<value(const list<value>&)>(applyLog(rel, host, category, sc)));
+}
+
+}
+}
+
+extern "C" {
+
+const tuscany::value apply(const tuscany::list<tuscany::value>& params) {
+    const tuscany::value func(car(params));
+    if (func == "start")
+        return tuscany::logger::start(cdr(params));
+    return tuscany::mkfailure<tuscany::value>();
+}
+
+}
-- 
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