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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.
*/
/* $Rev$ $Date$ */
/**
* Memcached-based cache component implementation.
*/
#include <apr_uuid.h>
#include <string>
#include "function.hpp"
#include "list.hpp"
#include "value.hpp"
#include "monad.hpp"
#include "mcache.hpp"
namespace tuscany {
namespace cache {
cache::MemCached ch;
/**
* Get an item from the cache.
*/
const failable<value, std::string> get(const list<value>& params) {
return cache::get(car(params), ch);
}
/**
* Post an item to the cache.
*/
const value uuidValue() {
apr_uuid_t uuid;
apr_uuid_get(&uuid);
char buf[APR_UUID_FORMATTED_LENGTH];
apr_uuid_format(buf, &uuid);
return value(std::string(buf, APR_UUID_FORMATTED_LENGTH));
}
const failable<value, std::string> post(const list<value>& params) {
const value id = uuidValue();
const failable<bool, std::string> val = cache::post(id, car(params), ch);
if (!hasContent(val))
return mkfailure<value, std::string>(reason(val));
return id;
}
/**
* Put an item into the cache.
*/
const failable<value, std::string> put(const list<value>& params) {
const failable<bool, std::string> val = cache::put(car(params), cadr(params), ch);
if (!hasContent(val))
return mkfailure<value, std::string>(reason(val));
return value(content(val));
}
/**
* Delete an item from the cache.
*/
const failable<value, std::string> del(const list<value>& params) {
const failable<bool, std::string> val = cache::del(car(params), ch);
if (!hasContent(val))
return mkfailure<value, std::string>(reason(val));
return value(content(val));
}
}
}
extern "C" {
const tuscany::failable<tuscany::value, std::string> eval(const tuscany::value& func, const tuscany::list<tuscany::value>& params) {
if (func == "get")
return tuscany::cache::get(params);
if (func == "post")
return tuscany::cache::post(params);
if (func == "put")
return tuscany::cache::put(params);
if (func == "delete")
return tuscany::cache::del(params);
return tuscany::mkfailure<tuscany::value, std::string>(std::string("Function not supported: ") + std::string(func));
}
}
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