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
|
/**
* @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, "target") && !HAS_ATTR(node, "targetexpr")) {
LOG(ERROR) << "Fetch element requires target or targetexpr";
return;
}
if (HAS_ATTR(node, "targetexpr") && !_interpreter->getDataModel()) {
LOG(ERROR) << "Fetch element with targetexpr requires datamodel";
return;
}
_target = (HAS_ATTR(node, "target") ? ATTR(node, "target") : _interpreter->getDataModel().evalAsString(ATTR(node, "targetexpr")));
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(_target);
if (!_targetUrl.isAbsolute()) {
if (!_targetUrl.toAbsolute(_interpreter->getBaseURI())) {
LOG(ERROR) << "Cannot transform " << _target << " into absolute URL";
return;
}
}
_targetUrl.addMonitor(this);
URLFetcher::fetchURL(_targetUrl);
}
void FetchElement::exitElement(const Arabica::DOM::Element<std::string>& node) {
}
}
|
