diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2011-03-13 19:24:02 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2011-03-13 19:24:02 +0000 |
commit | d1d9ba0e29baed02a052dae81b049d00a1454bf8 (patch) | |
tree | 722f36446ddb5acc51b4f3a3047f64b988fa99a4 /sca-cpp/trunk/components/http/httpget.cpp | |
parent | 6ecf9ca142893fe27ae9a2e269f7dff73fb6d7c6 (diff) |
Add a reusable component that returns the contents of a configured url.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1081203 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-cpp/trunk/components/http/httpget.cpp')
-rw-r--r-- | sca-cpp/trunk/components/http/httpget.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/sca-cpp/trunk/components/http/httpget.cpp b/sca-cpp/trunk/components/http/httpget.cpp new file mode 100644 index 0000000000..e64761714c --- /dev/null +++ b/sca-cpp/trunk/components/http/httpget.cpp @@ -0,0 +1,90 @@ +/* + * 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. + */ + +#include "string.hpp" +#include "function.hpp" +#include "list.hpp" +#include "value.hpp" +#include "monad.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, 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 tuscany::mkfailure<tuscany::value>(); + } + +private: + const lambda<value(const list<value>&)> url; + http::CURLSession& ch; +}; + +/** + * Start the component. + */ +const failable<value> start(const list<value>& params) { + // Create a CURL session + http::CURLSession& ch = *(new (gc_new<http::CURLSession>()) http::CURLSession("", "", "")); + + // 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>(); +} + +} |