llareslistener.cpp
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- /**
- * @file llareslistener.cpp
- * @author Nat Goodspeed
- * @date 2009-03-18
- * @brief Implementation for llareslistener.
- *
- * $LicenseInfo:firstyear=2009&license=viewergpl$
- *
- * Copyright (c) 2009-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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.
- * $/LicenseInfo$
- */
- // Precompiled header
- #include "linden_common.h"
- // associated header
- #include "llareslistener.h"
- // STL headers
- // std headers
- // external library headers
- // other Linden headers
- #include "llares.h"
- #include "llerror.h"
- #include "llevents.h"
- #include "llsdutil.h"
- LLAresListener::LLAresListener(LLAres* llares):
- LLEventAPI("LLAres",
- "LLAres listener to request DNS operations"),
- mAres(llares)
- {
- // add() every method we want to be able to invoke via this event API.
- // Optional last parameter validates expected LLSD request structure.
- add("rewriteURI",
- "Given ["uri"], return on ["reply"] an array of alternative URIs.n"
- "On failure, returns an array containing only the original URI, son"
- "failure case can be processed like success case.",
- &LLAresListener::rewriteURI,
- LLSD().with("uri", LLSD()).with("reply", LLSD()));
- }
- /// This UriRewriteResponder subclass packages returned URIs as an LLSD
- /// array to send back to the requester.
- class UriRewriteResponder: public LLAres::UriRewriteResponder
- {
- public:
- /**
- * Specify the request, containing the event pump name on which to send
- * the reply.
- */
- UriRewriteResponder(const LLSD& request):
- mReqID(request),
- mPumpName(request["reply"])
- {}
- /// Called by base class with results. This is called in both the
- /// success and error cases. On error, the calling logic passes the
- /// original URI.
- virtual void rewriteResult(const std::vector<std::string>& uris)
- {
- LLSD result;
- for (std::vector<std::string>::const_iterator ui(uris.begin()), uend(uris.end());
- ui != uend; ++ui)
- {
- result.append(*ui);
- }
- // This call knows enough to avoid trying to insert a map key into an
- // LLSD array. It's there so that if, for any reason, we ever decide
- // to change the response from array to map, it will Just Start Working.
- mReqID.stamp(result);
- LLEventPumps::instance().obtain(mPumpName).post(result);
- }
- private:
- LLReqID mReqID;
- const std::string mPumpName;
- };
- void LLAresListener::rewriteURI(const LLSD& data)
- {
- mAres->rewriteURI(data["uri"], new UriRewriteResponder(data));
- }