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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include <boost/algorithm/string.hpp>
#include "FetchElement.h"
#include "uscxml/DOMUtils.h"
#include <glog/logging.h>
#include <event2/http.h>
#include <event2/http_struct.h>
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
namespace uscxml {
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool pluginConnect(pluma::Host& host) {
host.add( new FetchElementProvider() );
return true;
}
#endif
boost::shared_ptr<ExecutableContentImpl> FetchElement::create(InterpreterImpl* interpreter) {
boost::shared_ptr<FetchElement> element = boost::shared_ptr<FetchElement>(new FetchElement());
element->_interpreter = interpreter;
return element;
}
FetchElement::~FetchElement() {
URLFetcher::breakURL(_targetUrl);
}
void FetchElement::downloadCompleted(const URL& url) {
Event event;
event.name = _callback;
std::string content = url.getInContent();
std::map<std::string, std::string> headerFields = url.getInHeaderFields();
if (false) {
} else if (iequals(_type, "text")) {
event.data.atom = content;
event.data.type = Data::VERBATIM;
} else if (iequals(_type, "url")) {
} else if (iequals(_type, "json")) {
event.data = Data::fromJSON(content);
} else if (iequals(_type, "xml")) {
event = Event::fromXML(content);
}
_interpreter->receive(event);
}
void FetchElement::downloadFailed(const URL& url, int errorCode) {
Event event;
event.name = _callback + ".failed";
_interpreter->receive(event);
}
void FetchElement::enterElement(const Arabica::DOM::Element<std::string>& node) {
if (!HAS_ATTR(node, "src") && !HAS_ATTR(node, "srcexpr")) {
LOG(ERROR) << "Fetch element requires src or srcexpr";
return;
}
if (HAS_ATTR(node, "srcexpr") && !_interpreter->getDataModel()) {
LOG(ERROR) << "Fetch element with srcexpr requires datamodel";
return;
}
_source = (HAS_ATTR(node, "src") ? ATTR(node, "src") : _interpreter->getDataModel().evalAsString(ATTR(node, "srcexpr")));
if (!HAS_ATTR(node, "callback") && !HAS_ATTR(node, "callbackexpr")) {
LOG(ERROR) << "Fetch element requires callback or callbackexpr";
return;
}
if (HAS_ATTR(node, "callbackexpr") && !_interpreter->getDataModel()) {
LOG(ERROR) << "Fetch element with callbackexpr requires datamodel";
return;
}
_callback = (HAS_ATTR(node, "callback") ? ATTR(node, "callback") : _interpreter->getDataModel().evalAsString(ATTR(node, "callbackexpr")));
_type = (HAS_ATTR(node, "type") ? ATTR(node, "type") : "text");
if (!iequals(_type, "text") &&
!iequals(_type, "url") &&
!iequals(_type, "json") &&
!iequals(_type, "xml")) {
LOG(ERROR) << "Fetch element type attribute not one of text, url, json, xml.";
return;
}
_targetUrl = URL(_source);
if (!_targetUrl.isAbsolute()) {
if (!_targetUrl.toAbsolute(_interpreter->getBaseURL(node))) {
LOG(ERROR) << "Cannot transform " << _source << " into absolute URL";
return;
}
}
_targetUrl.addMonitor(this);
URLFetcher::fetchURL(_targetUrl);
}
void FetchElement::exitElement(const Arabica::DOM::Element<std::string>& node) {
}
}
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