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/**
* @file lleventpoll.cpp
* @brief Implementation of the LLEventPoll class.
*
* Copyright (c) 2006-2007, Linden Research, Inc.
*
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlife.com/developers/opensource/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlife.com/developers/opensource/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
*/
#include "llviewerprecompiledheaders.h"
#include "lleventpoll.h"
#include "llhttpclient.h"
#include "llhttpnode.h"
#include "llsdserialize.h"
class LLEventPoll::Impl : LLHTTPClient::Responder
{
public:
static Impl& start(
const std::string& pollURL, const LLHTTPNode& treeRoot)
{
Impl* i = new Impl(pollURL, treeRoot);
llinfos << "LLEventPoll::Impl::start <" << i->mCount << "> "
<< pollURL << llendl;
return *i;
}
void stop()
{
lldebugs << "LLEventPoll::Impl::stop <" << mCount << "> "
<< mPollURL << llendl;
// there should be a way to stop a LLHTTPClient request in progress
mDone = true;
mPtr = NULL;
}
private:
Impl(const std::string& pollURL, const LLHTTPNode& treeRoot)
: mPtr(NULL), mDone(false),
mPollURL(pollURL), mTreeRoot(treeRoot),
mCount(++sCount)
{
mPtr = this;
makeRequest();
}
~Impl()
{
lldebugs << "LLEventPoll::Impl::~Impl <" << mCount << "> "
<< mPollURL << llendl;
}
void makeRequest()
{
LLSD request;
request["ack"] = mAcknowledge;
request["done"] = mDone;
lldebugs << "LLEventPoll::Impl::makeRequest <" << mCount << "> ack = "
<< LLSDXMLStreamer(mAcknowledge) << llendl;
LLHTTPClient::post(mPollURL, request, mPtr);
}
void handleMessage(const LLSD& content)
{
std::string message = content["message"];
if (message.empty())
{
llwarns << "LLEventPoll::Impl::handleMessage <" << mCount
<< "> empty message name" << llendl;
return;
}
std::string path = "/message/" + message;
LLSD context;
const LLHTTPNode* handler = mTreeRoot.traverse(path, context);
if (!handler)
{
llwarns << "LLEventPoll::Impl::handleMessage <" << mCount
<< "> no handler for " << path << llendl;
return;
}
LLPointer<LLSimpleResponse> responsep = LLSimpleResponse::create();
handler->post((LLHTTPNode::ResponsePtr)responsep, context, content["body"]);
lldebugs << "LLEventPoll::Impl::handleMessage handled <" << mCount << "> "
<< message << ": " << *responsep << llendl;
}
virtual void error(U32 status, const std::string& reason)
{
lldebugs << "LLEventPoll::Impl::error <" << mCount << "> got "
<< status << ": " << reason
<< (mDone ? " -- done" : "") << llendl;
if (mDone) return;
if (status == 404)
{
// the capability has been revoked
stop();
return;
}
makeRequest();
}
virtual void result(const LLSD& content)
{
lldebugs << "LLEventPoll::Impl::result <" << mCount << ">"
<< (mDone ? " -- done" : "") << llendl;
if (mDone) return;
mAcknowledge = content["id"];
LLSD events = content["events"];
lldebugs << "LLEventPoll::Impl::completed <" << mCount << "> ack = "
<< LLSDXMLStreamer(mAcknowledge) << llendl;
LLSD::array_const_iterator i = events.beginArray();
LLSD::array_const_iterator end = events.endArray();
for (; i != end; ++i)
{
if (i->has("message"))
{
handleMessage(*i);
}
}
makeRequest();
}
private:
typedef LLHTTPClient::ResponderPtr Ptr;
Ptr mPtr;
bool mDone;
std::string mPollURL;
const LLHTTPNode& mTreeRoot;
LLSD mAcknowledge;
// these are only here for debugging so we can see which poller is which
static int sCount;
int mCount;
};
int LLEventPoll::Impl::sCount = 0;
LLEventPoll::LLEventPoll(const std::string& pollURL, const LLHTTPNode& treeRoot)
: impl(Impl::start(pollURL, treeRoot))
{ }
LLEventPoll::~LLEventPoll()
{
impl.stop();
}
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