1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
#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 {
Data contentData = _interpreter->getDataModel().getStringAsData(ATTR(contents[0], "expr"));
if (contentData.atom.length() > 0) {
httpReply.content = contentData.atom;
} else if (contentData.binary) {
httpReply.content = std::string(contentData.binary->_data, contentData.binary->_size);
} else {
httpReply.content = Data::toJSON(contentData);
}
} 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], "valueexpr")) {
if (_interpreter->getDataModel()) {
try {
value = _interpreter->getDataModel().evalAsString(ATTR(headers[i], "valueexpr"));
} catch (Event e) {
LOG(ERROR) << "Syntax error with valueexpr in header child of Respond element:" << std::endl << e << std::endl;
return;
}
} else {
LOG(ERROR) << "header element has valueexpr attribute but no datamodel is specified.";
return;
}
} else {
LOG(ERROR) << "header element has no value or valueexpr 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) {
}
}
|
