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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.
*/
/* $Rev$ $Date$ */
#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 */
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