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#include "RespondElement.h"
#include "uscxml/plugins/invoker/http/HTTPServletInvoker.h"
#include <glog/logging.h>
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
namespace uscxml {
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool connect(pluma::Host& host) {
host.add( new RespondElementProvider() );
return true;
}
#endif
boost::shared_ptr<ExecutableContentImpl> RespondElement::create(InterpreterImpl* interpreter) {
boost::shared_ptr<RespondElement> invoker = boost::shared_ptr<RespondElement>(new RespondElement());
invoker->_interpreter = interpreter;
return invoker;
}
void RespondElement::enterElement(const Arabica::DOM::Node<std::string>& node) {
// try to get the request id
if (!HAS_ATTR(node, "to")) {
LOG(ERROR) << "Respond element requires to attribute";
return;
}
if (HAS_ATTR(node, "to") && !_interpreter->getDataModel()) {
LOG(ERROR) << "Respond element with to requires datamodel";
return;
}
std::string requestId = _interpreter->getDataModel().evalAsString(ATTR(node, "to"));
// try to get the request object
InterpreterServlet* servlet = _interpreter->getHTTPServlet();
tthread::lock_guard<tthread::recursive_mutex> lock(servlet->getMutex());
if (servlet->getRequests().find(requestId) == servlet->getRequests().end()) {
LOG(ERROR) << "No matching HTTP request for respond element";
return;
}
assert(servlet->getRequests().find(requestId) != servlet->getRequests().end());
HTTPServer::Request httpReq = servlet->getRequests()[requestId];
assert(httpReq.curlReq != NULL);
HTTPServer::Reply httpReply(httpReq);
servlet->getRequests().erase(requestId);
// get the status or default to 200
std::string statusStr = (HAS_ATTR(node, "status") ? ATTR(node, "status") : "200");
if (!isNumeric(statusStr.c_str(), 10)) {
LOG(ERROR) << "Respond element with non-numeric status " << statusStr;
return;
}
httpReply.status = strTo<int>(statusStr);;
// extract the content
Arabica::XPath::NodeSet<std::string> contents = Interpreter::filterChildElements(_interpreter->getXMLPrefixForNS(getNamespace()) + "content", node);
if (contents.size() > 0) {
if (HAS_ATTR(contents[0], "expr")) { // -- content is evaluated string from datamodel ------
if (_interpreter->getDataModel()) {
try {
std::string contentValue = _interpreter->getDataModel().evalAsString(ATTR(contents[0], "expr"));
httpReply.content = contentValue;
} catch (Event e) {
LOG(ERROR) << "Syntax error with expr in content child of Respond element:" << std::endl << e << std::endl;
return;
}
} else {
LOG(ERROR) << "content element has expr attribute but no datamodel is specified.";
return;
}
} else if (HAS_ATTR(contents[0], "file") || HAS_ATTR(contents[0], "fileexpr")) { // -- content is from file ------
URL file;
if (HAS_ATTR(contents[0], "fileexpr")) {
if (_interpreter->getDataModel()) {
try {
file = "file://" + _interpreter->getDataModel().evalAsString(ATTR(contents[0], "fileexpr"));
} catch (Event e) {
LOG(ERROR) << "Syntax error with fileexpr in content child of Respond element:" << std::endl << e << std::endl;
return;
}
}
} else {
file = "file://" + ATTR(contents[0], "fileexpr");
}
if (file) {
httpReply.content = file.getInContent();
size_t lastDot;
if ((lastDot = file.path().find_last_of(".")) != std::string::npos) {
std::string extension = file.path().substr(lastDot + 1);
std::string mimeType = HTTPServer::mimeTypeForExtension(extension);
if (mimeType.length() > 0) {
httpReply.headers["Content-Type"] = mimeType;
}
}
}
} else if (contents[0].hasChildNodes()) { // -- content embedded as child nodes ------
httpReply.content = contents[0].getFirstChild().getNodeValue();
} else {
LOG(ERROR) << "content element does not specify any content.";
return;
}
}
// process headers
Arabica::XPath::NodeSet<std::string> headers = Interpreter::filterChildElements(_interpreter->getXMLPrefixForNS(getNamespace()) + "header", node);
for (int i = 0; i < headers.size(); i++) {
std::string name;
if (HAS_ATTR(headers[i], "name")) {
name = ATTR(headers[i], "name");
} else if(HAS_ATTR(headers[i], "nameexpr")) {
if (_interpreter->getDataModel()) {
try {
name = _interpreter->getDataModel().evalAsString(ATTR(headers[i], "nameexpr"));
} catch (Event e) {
LOG(ERROR) << "Syntax error with nameexpr in header child of Respond element:" << std::endl << e << std::endl;
return;
}
} else {
LOG(ERROR) << "header element has nameexpr attribute but no datamodel is specified.";
return;
}
} else {
LOG(ERROR) << "header element has no name or nameexpr attribute.";
return;
}
std::string value;
if (HAS_ATTR(headers[i], "value")) {
value = ATTR(headers[i], "value");
} else if(HAS_ATTR(headers[i], "expr")) {
if (_interpreter->getDataModel()) {
try {
value = _interpreter->getDataModel().evalAsString(ATTR(headers[i], "expr"));
} catch (Event e) {
LOG(ERROR) << "Syntax error with expr in header child of Respond element:" << std::endl << e << std::endl;
return;
}
} else {
LOG(ERROR) << "header element has expr attribute but no datamodel is specified.";
return;
}
} else {
LOG(ERROR) << "header element has no value or expr attribute.";
return;
}
httpReply.headers[name] = value;
}
// send the reply
HTTPServer::reply(httpReply);
servlet->getRequests().erase(requestId);
}
void RespondElement::exitElement(const Arabica::DOM::Node<std::string>& node) {
}
}
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