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
|
/**
* @file llsdmessage.cpp
* @author Nat Goodspeed
* @date 2008-10-31
* @brief Implementation for llsdmessage.
*
* $LicenseInfo:firstyear=2008&license=viewergpl$
* Copyright (c) 2008, Linden Research, Inc.
* $/LicenseInfo$
*/
#if LL_WINDOWS
#pragma warning (disable : 4675) // "resolved by ADL" -- just as I want!
#endif
// Precompiled header
#include "linden_common.h"
// associated header
#include "llsdmessage.h"
// STL headers
// std headers
// external library headers
// other Linden headers
#include "llevents.h"
#include "llsdserialize.h"
#include "llhttpclient.h"
#include "llmessageconfig.h"
#include "llhost.h"
#include "message.h"
#include "llsdutil.h"
// Declare a static LLSDMessage instance to ensure that we have a listener as
// soon as someone tries to post on our canonical LLEventPump name.
static LLSDMessage httpListener;
LLSDMessage::LLSDMessage():
// Instantiating our own local LLEventPump with a string name the
// constructor is NOT allowed to tweak is a way of ensuring Singleton
// semantics: attempting to instantiate a second LLSDMessage object would
// throw LLEventPump::DupPumpName.
mEventPump("LLHTTPClient")
{
mEventPump.listen("self", boost::bind(&LLSDMessage::httpListener, this, _1));
}
bool LLSDMessage::httpListener(const LLSD& request)
{
// Extract what we want from the request object. We do it all up front
// partly to document what we expect.
LLSD::String url(request["url"]);
LLSD payload(request["payload"]);
LLSD::String reply(request["reply"]);
LLSD::String error(request["error"]);
LLSD::Real timeout(request["timeout"]);
// If the LLSD doesn't even have a "url" key, we doubt it was intended for
// this listener.
if (url.empty())
{
std::ostringstream out;
out << "request event without 'url' key to '" << mEventPump.getName() << "'";
throw ArgError(out.str());
}
// Establish default timeout. This test relies on LLSD::asReal() returning
// exactly 0.0 for an undef value.
if (! timeout)
{
timeout = HTTP_REQUEST_EXPIRY_SECS;
}
LLHTTPClient::post(url, payload,
new LLSDMessage::EventResponder(LLEventPumps::instance(),
url, "POST", reply, error),
LLSD(), // headers
timeout);
return false;
}
void LLSDMessage::EventResponder::result(const LLSD& data)
{
// If our caller passed an empty replyPump name, they're not
// listening: this is a fire-and-forget message. Don't bother posting
// to the pump whose name is "".
if (! mReplyPump.empty())
{
mPumps.obtain(mReplyPump).post(data);
}
else // default success handling
{
LL_INFOS("LLSDMessage::EventResponder")
<< "'" << mMessage << "' to '" << mTarget << "' succeeded"
<< LL_ENDL;
}
}
void LLSDMessage::EventResponder::error(U32 status, const std::string& reason, const LLSD& content)
{
// If our caller passed an empty errorPump name, they're not
// listening: "default error handling is acceptable." Only post to an
// explicit pump name.
if (! mErrorPump.empty())
{
LLSD info;
info["target"] = mTarget;
info["message"] = mMessage;
info["status"] = LLSD::Integer(status);
info["reason"] = reason;
info["content"] = content;
mPumps.obtain(mErrorPump).post(info);
}
else // default error handling
{
// convention seems to be to use llinfos, but that seems a bit casual?
LL_WARNS("LLSDMessage::EventResponder")
<< "'" << mMessage << "' to '" << mTarget
<< "' failed with code " << status << ": " << reason << '\n'
<< ll_pretty_print_sd(content)
<< LL_ENDL;
}
}
LLSDMessage::ResponderAdapter::ResponderAdapter(LLHTTPClient::ResponderPtr responder,
const std::string& name):
mResponder(responder),
mReplyPump(name + ".reply", true), // tweak name for uniqueness
mErrorPump(name + ".error", true)
{
mReplyPump.listen("self", boost::bind(&ResponderAdapter::listener, this, _1, true));
mErrorPump.listen("self", boost::bind(&ResponderAdapter::listener, this, _1, false));
}
bool LLSDMessage::ResponderAdapter::listener(const LLSD& payload, bool success)
{
if (success)
{
mResponder->result(payload);
}
else
{
mResponder->error(payload["status"].asInteger(), payload["reason"], payload["content"]);
}
/*---------------- MUST BE LAST STATEMENT BEFORE RETURN ----------------*/
delete this;
// Destruction of mResponder will usually implicitly free its referent as well
/*------------------------- NOTHING AFTER THIS -------------------------*/
return false;
}
void LLSDMessage::link()
{
}
|
