1 files changed, 125 insertions, 0 deletions
diff --git a/cpp/sca/modules/cache/cache.hpp b/cpp/sca/modules/cache/cache.hpp
new file mode 100644
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+++ b/cpp/sca/modules/cache/cache.hpp
@@ -0,0 +1,125 @@
+/*
+ * 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.
+ */
+
+/* $Rev$ $Date$ */
+
+#ifndef tuscany_cache_hpp
+#define tuscany_cache_hpp
+
+/**
+ * Memcached access functions.
+ */
+
+#include "apr.h"
+#include "apu.h"
+#include "apr_general.h"
+#include "apr_strings.h"
+#include "apr_hash.h"
+#include "apr_memcache.h"
+#include "apr_network_io.h"
+
+#include <string>
+#include "list.hpp"
+#include "value.hpp"
+#include "monad.hpp"
+
+namespace tuscany {
+namespace cache {
+
+class Cache {
+public:
+    Cache() {
+        apr_pool_create(&pool, NULL);
+        apr_memcache_create(pool, 1, 0, &mc);
+    }
+    ~Cache() {
+        apr_pool_destroy(pool);
+    }
+
+    operator apr_memcache_t*() const {
+        return mc;
+    }
+
+    operator apr_pool_t*() const {
+        return pool;
+    }
+
+private:
+    apr_pool_t* pool;
+    apr_memcache_t* mc;
+
+};
+
+const failable<bool, std::string> addServer(const std::string& host, const int port, Cache& cache) {
+    apr_memcache_server_t *server;
+    const apr_status_t sc = apr_memcache_server_create(cache, host.c_str(), port, 0, 1, 1, 60, &server);
+    if (sc != APR_SUCCESS)
+        return "Could not create server";
+    const apr_status_t as = apr_memcache_add_server(cache, server);
+    if (as != APR_SUCCESS)
+        return "Could not add server";
+    return true;
+}
+
+const failable<bool, std::string> post(const value& key, const value& val, Cache& cache) {
+    const std::string v(val);
+    const apr_status_t rc = apr_memcache_add(cache, std::string(key).c_str(), const_cast<char*>(v.c_str()), v.size(), 0, 27);
+    if (rc != APR_SUCCESS)
+        return "Could not add entry";
+    return true;
+}
+
+const failable<bool, std::string> put(const value& key, const value& val, Cache& cache) {
+    const std::string v(val);
+    const apr_status_t rc = apr_memcache_replace(cache, std::string(key).c_str(), const_cast<char*>(v.c_str()), v.size(), 0, 27);
+    if (rc != APR_SUCCESS)
+        return "Could not add entry";
+    return true;
+}
+
+const failable<value, std::string> get(const value& key, Cache& cache) {
+    apr_pool_t* vpool;
+    const apr_status_t pc = apr_pool_create(&vpool, cache);
+    if (pc != APR_SUCCESS)
+        return std::string("Could not allocate memory");
+
+    char *data;
+    apr_size_t size;
+    const apr_status_t rc = apr_memcache_getp(cache, cache, std::string(key).c_str(), &data, &size, NULL);
+    if (rc != APR_SUCCESS) {
+        apr_pool_destroy(vpool);
+        return std::string("Could not get entry");
+    }
+
+    const value val(std::string(data, size));
+    apr_pool_destroy(vpool);
+    return val;
+}
+
+const failable<bool, std::string> del(const value& key, Cache& cache) {
+    const apr_status_t rc = apr_memcache_delete(cache, std::string(key).c_str(), 0);
+    if (rc != APR_SUCCESS)
+        return "Could not add entry";
+    return true;
+}
+
+}
+}
+
+#endif /* tuscany_cache_hpp */