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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.
*/
/* $Rev$ $Date$ */
/**
* HTTP client component implementation.
*/
#define WANT_HTTPD_LOG 1
#include "string.hpp"
#include "function.hpp"
#include "list.hpp"
#include "value.hpp"
#include "monad.hpp"
#include "parallel.hpp"
#include "../../modules/http/http.hpp"
namespace tuscany {
namespace httpget {
/**
* Evaluate an HTTP get.
*/
const failable<value> get(const lambda<value(const list<value>&)>& url, http::CURLSession& ch) {
debug("httpget::get");
const value u = url(mklist<value>("get", list<value>()));
debug(u, "httpget::get::url");
return http::get(u, ch);
}
/**
* Component implementation lambda function.
*/
class applyhttp {
public:
applyhttp(const lambda<value(const list<value>&)>& url, const perthread_ptr<http::CURLSession>& ch) : url(url), ch(ch) {
}
const value operator()(const list<value>& params) const {
debug(params, "httpget::applyhttp::params");
const value func(car(params));
if (func == "get")
return get(url, *ch);
return mkfailure<value>();
}
private:
const lambda<value(const list<value>&)> url;
perthread_ptr<http::CURLSession> ch;
};
/**
* Create a new CURL session.
*/
class newsession {
public:
newsession(const lambda<value(const list<value>&)>& timeout) : timeout(timeout) {
}
const gc_ptr<http::CURLSession> operator()() const {
const int t = atoi(c_str((string)timeout(list<value>())));
return new (gc_new<http::CURLSession>()) http::CURLSession("", "", "", "", t);
}
private:
const lambda<value(const list<value>&)> timeout;
};
/**
* Start the component.
*/
const failable<value> start(const list<value>& params) {
// Create a CURL session
const perthread_ptr<http::CURLSession> ch = perthread_ptr<http::CURLSession>(lambda<gc_ptr<http::CURLSession>()>(newsession(cadr(params))));
// Return the component implementation lambda function
return value(lambda<value(const list<value>&)>(applyhttp(car(params), ch)));
}
}
}
extern "C" {
const tuscany::value apply(const tuscany::list<tuscany::value>& params) {
const tuscany::value func(car(params));
if (func == "start")
return tuscany::httpget::start(cdr(params));
return tuscany::mkfailure<tuscany::value>();
}
}
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