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/**
* @file llinventorymodelbackgroundfetch.cpp
* @brief Implementation of background fetching of inventory.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2014, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llinventorymodelbackgroundfetch.h"
#include "llaisapi.h"
#include "llagent.h"
#include "llappviewer.h"
#include "llcallbacklist.h"
#include "llinventorypanel.h"
#include "llinventorymodel.h"
#include "llviewercontrol.h"
#include "llviewerinventory.h"
#include "llviewermessage.h"
#include "llviewerregion.h"
#include "llviewerwindow.h"
#include "llhttpconstants.h"
#include "bufferarray.h"
#include "bufferstream.h"
#include "llcorehttputil.h"
#include "llviewermenu.h"
#include "llviewernetwork.h"
// History (may be apocryphal)
//
// Around V2, an HTTP inventory download mechanism was added
// along with inventory LINK items referencing other inventory
// items. As part of this, at login, the entire inventory
// structure is downloaded 'in the background' using the
// backgroundFetch()/bulkFetch() methods. The UDP path can
// still be used and is found in the 'DEPRECATED OLD CODE'
// section.
//
// The old UDP path implemented a throttle that adapted
// itself during running. The mechanism survived info HTTP
// somewhat but was pinned to poll the HTTP plumbing at
// 0.5S intervals. The reasons for this particular value
// have been lost. It's possible to switch between UDP
// and HTTP while this is happening but there may be
// surprises in what happens in that case.
//
// Conversion to llcorehttp reduced the number of connections
// used but batches more data and queues more requests (but
// doesn't due pipelining due to libcurl restrictions). The
// poll interval above was re-examined and reduced to get
// inventory into the viewer more quickly.
//
// Possible future work:
//
// * Don't download the entire heirarchy in one go (which
// might have been how V1 worked). Implications for
// links (which may not have a valid target) and search
// which would then be missing data.
//
// * Review the download rate throttling. Slow then fast?
// Detect bandwidth usage and speed up when it drops?
//
// * An error on a fetch could be due to one item in the batch.
// If the batch were broken up, perhaps more of the inventory
// would download. (Handwave here, not certain this is an
// issue in practice.)
//
// * Conversion to AISv3.
//
namespace
{
///----------------------------------------------------------------------------
/// Class <anonymous>::BGItemHttpHandler
///----------------------------------------------------------------------------
//
// Http request handler class for single inventory item requests.
//
// We'll use a handler-per-request pattern here rather than
// a shared handler. Mainly convenient as this was converted
// from a Responder class model.
//
// Derives from and is identical to the normal FetchItemHttpHandler
// except that: 1) it uses the background request object which is
// updated more slowly than the foreground and 2) keeps a count of
// active requests on the LLInventoryModelBackgroundFetch object
// to indicate outstanding operations are in-flight.
//
class BGItemHttpHandler : public LLInventoryModel::FetchItemHttpHandler
{
LOG_CLASS(BGItemHttpHandler);
public:
BGItemHttpHandler(const LLSD & request_sd)
: LLInventoryModel::FetchItemHttpHandler(request_sd)
{
LLInventoryModelBackgroundFetch::instance().incrFetchCount(1);
}
virtual ~BGItemHttpHandler()
{
LLInventoryModelBackgroundFetch::instance().incrFetchCount(-1);
}
protected:
BGItemHttpHandler(const BGItemHttpHandler &); // Not defined
void operator=(const BGItemHttpHandler &); // Not defined
};
///----------------------------------------------------------------------------
/// Class <anonymous>::BGFolderHttpHandler
///----------------------------------------------------------------------------
// Http request handler class for folders.
//
// Handler for FetchInventoryDescendents2 and FetchLibDescendents2
// caps requests for folders.
//
class BGFolderHttpHandler : public LLCore::HttpHandler
{
LOG_CLASS(BGFolderHttpHandler);
public:
BGFolderHttpHandler(const LLSD & request_sd, const uuid_vec_t & recursive_cats)
: LLCore::HttpHandler(),
mRequestSD(request_sd),
mRecursiveCatUUIDs(recursive_cats)
{
LLInventoryModelBackgroundFetch::instance().incrFetchCount(1);
}
virtual ~BGFolderHttpHandler()
{
LLInventoryModelBackgroundFetch::instance().incrFetchCount(-1);
}
protected:
BGFolderHttpHandler(const BGFolderHttpHandler &); // Not defined
void operator=(const BGFolderHttpHandler &); // Not defined
public:
virtual void onCompleted(LLCore::HttpHandle handle, LLCore::HttpResponse * response);
bool getIsRecursive(const LLUUID & cat_id) const;
private:
void processData(LLSD & body, LLCore::HttpResponse * response);
void processFailure(LLCore::HttpStatus status, LLCore::HttpResponse * response);
void processFailure(const char * const reason, LLCore::HttpResponse * response);
private:
LLSD mRequestSD;
const uuid_vec_t mRecursiveCatUUIDs; // hack for storing away which cat fetches are recursive
};
const S32 MAX_FETCH_RETRIES = 10; // <FS:ND/> For legacy inventory
const char * const LOG_INV("Inventory");
} // end of namespace anonymous
///----------------------------------------------------------------------------
/// Class LLInventoryModelBackgroundFetch
///----------------------------------------------------------------------------
LLInventoryModelBackgroundFetch::LLInventoryModelBackgroundFetch():
mBackgroundFetchActive(false),
mFolderFetchActive(false),
mFetchCount(0),
mAllFoldersFetched(false),
mRecursiveInventoryFetchStarted(false),
mRecursiveLibraryFetchStarted(false),
mMinTimeBetweenFetches(0.3f)
{}
LLInventoryModelBackgroundFetch::~LLInventoryModelBackgroundFetch()
{}
bool LLInventoryModelBackgroundFetch::isBulkFetchProcessingComplete() const
{
return mFetchQueue.empty() && mFetchCount <= 0;
}
bool LLInventoryModelBackgroundFetch::libraryFetchStarted() const
{
return mRecursiveLibraryFetchStarted;
}
bool LLInventoryModelBackgroundFetch::libraryFetchCompleted() const
{
return libraryFetchStarted() && fetchQueueContainsNoDescendentsOf(gInventory.getLibraryRootFolderID());
}
bool LLInventoryModelBackgroundFetch::libraryFetchInProgress() const
{
return libraryFetchStarted() && !libraryFetchCompleted();
}
bool LLInventoryModelBackgroundFetch::inventoryFetchStarted() const
{
return mRecursiveInventoryFetchStarted;
}
bool LLInventoryModelBackgroundFetch::inventoryFetchCompleted() const
{
return inventoryFetchStarted() && fetchQueueContainsNoDescendentsOf(gInventory.getRootFolderID());
}
bool LLInventoryModelBackgroundFetch::inventoryFetchInProgress() const
{
return inventoryFetchStarted() && ! inventoryFetchCompleted();
}
bool LLInventoryModelBackgroundFetch::isEverythingFetched() const
{
return mAllFoldersFetched;
}
BOOL LLInventoryModelBackgroundFetch::folderFetchActive() const
{
return mFolderFetchActive;
}
void LLInventoryModelBackgroundFetch::addRequestAtFront(const LLUUID & id, bool recursive, bool is_category)
{
ERecursionType recursion_type = recursive ? RT_RECURSIVE : RT_NONE;
mFetchQueue.push_front(FetchQueueInfo(id, recursion_type, is_category));
}
void LLInventoryModelBackgroundFetch::addRequestAtBack(const LLUUID & id, bool recursive, bool is_category)
{
ERecursionType recursion_type = recursive ? RT_RECURSIVE : RT_NONE;
mFetchQueue.push_back(FetchQueueInfo(id, recursion_type, is_category));
}
void LLInventoryModelBackgroundFetch::start(const LLUUID& id, bool recursive)
{
LLViewerInventoryCategory * cat(gInventory.getCategory(id));
if (cat || (id.isNull() && ! isEverythingFetched()))
{
// it's a folder, do a bulk fetch
LL_DEBUGS(LOG_INV) << "Start fetching category: " << id << ", recursive: " << recursive << LL_ENDL;
mBackgroundFetchActive = true;
mFolderFetchActive = true;
ERecursionType recursion_type = recursive ? RT_RECURSIVE : RT_NONE;
if (id.isNull())
{
if (! mRecursiveInventoryFetchStarted)
{
mRecursiveInventoryFetchStarted |= recursive;
if (recursive && AISAPI::isAvailable())
{
// Not only root folder can be massive, but
// most system folders will be requested independently
// so request root folder and content separately
mFetchQueue.push_front(FetchQueueInfo(gInventory.getRootFolderID(), RT_CONTENT));
}
else
{
mFetchQueue.push_back(FetchQueueInfo(gInventory.getRootFolderID(), recursion_type));
}
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
if (! mRecursiveLibraryFetchStarted)
{
mRecursiveLibraryFetchStarted |= recursive;
mFetchQueue.push_back(FetchQueueInfo(gInventory.getLibraryRootFolderID(), recursion_type));
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
}
else
{
if (mFetchQueue.empty() || mFetchQueue.front().mUUID != id)
{
if (AISAPI::isAvailable())
{
// On AIS make sure root goes to the top and follow up recursive
// fetches, not individual requests
mFetchQueue.push_back(FetchQueueInfo(id, recursion_type));
}
else
{
// Specific folder requests go to front of queue.
mFetchQueue.push_front(FetchQueueInfo(id, recursion_type));
}
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
if (id == gInventory.getLibraryRootFolderID())
{
mRecursiveLibraryFetchStarted |= recursive;
}
if (id == gInventory.getRootFolderID())
{
mRecursiveInventoryFetchStarted |= recursive;
}
}
}
else if (LLViewerInventoryItem * itemp = gInventory.getItem(id))
{
if (! itemp->mIsComplete && (mFetchQueue.empty() || mFetchQueue.front().mUUID != id))
{
mBackgroundFetchActive = true;
mFetchQueue.push_front(FetchQueueInfo(id, RT_NONE, false));
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
}
}
void LLInventoryModelBackgroundFetch::findLostItems()
{
mBackgroundFetchActive = true;
mFolderFetchActive = true;
mFetchQueue.push_back(FetchQueueInfo(LLUUID::null, RT_RECURSIVE));
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
void LLInventoryModelBackgroundFetch::setAllFoldersFetched()
{
if (mRecursiveInventoryFetchStarted &&
mRecursiveLibraryFetchStarted)
{
mAllFoldersFetched = true;
//LL_INFOS(LOG_INV) << "All folders fetched, validating" << LL_ENDL;
//gInventory.validate();
// For now only informs about initial fetch being done
mAllFoldersFetchedSignal();
}
mFolderFetchActive = false;
mBackgroundFetchActive = false;
LL_INFOS(LOG_INV) << "Inventory background fetch completed" << LL_ENDL;
}
boost::signals2::connection LLInventoryModelBackgroundFetch::setAllFoldersFetchedCallback(folders_fetched_callback_t cb)
{
return mAllFoldersFetchedSignal.connect(cb);
}
void LLInventoryModelBackgroundFetch::backgroundFetchCB(void *)
{
LLInventoryModelBackgroundFetch::instance().backgroundFetch();
}
void LLInventoryModelBackgroundFetch::backgroundFetch()
{
if (mBackgroundFetchActive && gAgent.getRegion() && gAgent.getRegion()->capabilitiesReceived())
{
// If we'll be using the capability, we'll be sending batches and the background thing isn't as important.
// <FS:Ansariel> Force HTTP features on SL
//if (gSavedSettings.getBOOL("UseHTTPInventory"))
if (use_http_inventory())
// </FS:Ansariel>
{
if (AISAPI::isAvailable())
{
bulkFetchViaAis();
}
else
{
// If we'll be using the capability, we'll be sending batches and the background thing isn't as important.
bulkFetch();
}
return;
}
#if 1
//--------------------------------------------------------------------------------
// DEPRECATED OLD CODE
//
// No more categories to fetch, stop fetch process.
if (mFetchQueue.empty())
{
setAllFoldersFetched();
return;
}
F32 fast_fetch_time = lerp(mMinTimeBetweenFetches, mMaxTimeBetweenFetches, 0.1f);
F32 slow_fetch_time = lerp(mMinTimeBetweenFetches, mMaxTimeBetweenFetches, 0.5f);
if (mTimelyFetchPending && mFetchTimer.getElapsedTimeF32() > slow_fetch_time)
{
// Double timeouts on failure.
mMinTimeBetweenFetches = llmin(mMinTimeBetweenFetches * 2.f, 10.f);
mMaxTimeBetweenFetches = llmin(mMaxTimeBetweenFetches * 2.f, 120.f);
LL_DEBUGS(LOG_INV) << "Inventory fetch times grown to (" << mMinTimeBetweenFetches << ", " << mMaxTimeBetweenFetches << ")" << LL_ENDL;
// fetch is no longer considered "timely" although we will wait for full time-out.
mTimelyFetchPending = FALSE;
}
while(1)
{
if (mFetchQueue.empty())
{
break;
}
if (gDisconnected)
{
// Just bail if we are disconnected.
break;
}
const FetchQueueInfo info = mFetchQueue.front();
if (info.mIsCategory)
{
LLViewerInventoryCategory* cat = gInventory.getCategory(info.mUUID);
// Category has been deleted, remove from queue.
if (!cat)
{
mFetchQueue.pop_front();
continue;
}
if (mFetchTimer.getElapsedTimeF32() > mMinTimeBetweenFetches &&
LLViewerInventoryCategory::VERSION_UNKNOWN == cat->getVersion())
{
// Category exists but has no children yet, fetch the descendants
// for now, just request every time and rely on retry timer to throttle.
if (cat->fetch())
{
mFetchTimer.reset();
mTimelyFetchPending = TRUE;
}
else
{
// The catagory also tracks if it has expired and here it says it hasn't
// yet. Get out of here because nothing is going to happen until we
// update the timers.
break;
}
}
// Do I have all my children?
else if (gInventory.isCategoryComplete(info.mUUID))
{
// Finished with this category, remove from queue.
mFetchQueue.pop_front();
// Add all children to queue.
LLInventoryModel::cat_array_t* categories;
LLInventoryModel::item_array_t* items;
gInventory.getDirectDescendentsOf(cat->getUUID(), categories, items);
for (LLInventoryModel::cat_array_t::const_iterator it = categories->begin();
it != categories->end();
++it)
{
mFetchQueue.push_back(FetchQueueInfo((*it)->getUUID(),info.mRecursive));
}
// We received a response in less than the fast time.
if (mTimelyFetchPending && mFetchTimer.getElapsedTimeF32() < fast_fetch_time)
{
// Shrink timeouts based on success.
mMinTimeBetweenFetches = llmax(mMinTimeBetweenFetches * 0.8f, 0.3f);
mMaxTimeBetweenFetches = llmax(mMaxTimeBetweenFetches * 0.8f, 10.f);
LL_DEBUGS(LOG_INV) << "Inventory fetch times shrunk to (" << mMinTimeBetweenFetches << ", " << mMaxTimeBetweenFetches << ")" << LL_ENDL;
}
mTimelyFetchPending = FALSE;
continue;
}
else if (mFetchTimer.getElapsedTimeF32() > mMaxTimeBetweenFetches)
{
// Received first packet, but our num descendants does not match db's num descendants
// so try again later.
mFetchQueue.pop_front();
if (mNumFetchRetries++ < MAX_FETCH_RETRIES)
{
// push on back of queue
mFetchQueue.push_back(info);
}
mTimelyFetchPending = FALSE;
mFetchTimer.reset();
break;
}
// Not enough time has elapsed to do a new fetch
break;
}
else
{
LLViewerInventoryItem* itemp = gInventory.getItem(info.mUUID);
mFetchQueue.pop_front();
if (!itemp)
{
continue;
}
if (mFetchTimer.getElapsedTimeF32() > mMinTimeBetweenFetches)
{
itemp->fetchFromServer();
mFetchTimer.reset();
mTimelyFetchPending = TRUE;
}
else if (itemp->mIsComplete)
{
mTimelyFetchPending = FALSE;
}
else if (mFetchTimer.getElapsedTimeF32() > mMaxTimeBetweenFetches)
{
mFetchQueue.push_back(info);
mFetchTimer.reset();
mTimelyFetchPending = FALSE;
}
// Not enough time has elapsed to do a new fetch
break;
}
}
//
// DEPRECATED OLD CODE
//--------------------------------------------------------------------------------
#endif
}
}
void LLInventoryModelBackgroundFetch::incrFetchCount(S32 fetching)
{
mFetchCount += fetching;
if (mFetchCount < 0)
{
LL_WARNS_ONCE(LOG_INV) << "Inventory fetch count fell below zero (0)." << LL_ENDL;
mFetchCount = 0;
}
}
void ais_simple_callback(const LLUUID& inv_id)
{
LLInventoryModelBackgroundFetch::instance().incrFetchCount(-1);
}
void LLInventoryModelBackgroundFetch::onAISCalback(const LLUUID &request_id, const LLUUID &response_id, ERecursionType recursion)
{
incrFetchCount(-1);
if (response_id.isNull()) // Failure
{
if (recursion == RT_RECURSIVE)
{
// A full recursive request failed.
// Try requesting folder and nested content separately
mBackgroundFetchActive = true;
mFolderFetchActive = true;
mFetchQueue.push_front(FetchQueueInfo(request_id, RT_CONTENT));
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
}
else
{
if (recursion == RT_CONTENT)
{
// Got the folder, now recursively request content
LLInventoryModel::cat_array_t * categories(NULL);
LLInventoryModel::item_array_t * items(NULL);
gInventory.getDirectDescendentsOf(request_id, categories, items);
for (LLInventoryModel::cat_array_t::const_iterator it = categories->begin();
it != categories->end();
++it)
{
mFetchQueue.push_front(FetchQueueInfo((*it)->getUUID(), RT_RECURSIVE));
}
if (!mFetchQueue.empty())
{
mBackgroundFetchActive = true;
mFolderFetchActive = true;
gIdleCallbacks.addFunction(&LLInventoryModelBackgroundFetch::backgroundFetchCB, NULL);
}
}
}
}
static LLTrace::BlockTimerStatHandle FTM_BULK_FETCH("Bulk Fetch");
void LLInventoryModelBackgroundFetch::bulkFetchViaAis()
{
LL_RECORD_BLOCK_TIME(FTM_BULK_FETCH);
//Background fetch is called from gIdleCallbacks in a loop until background fetch is stopped.
if (gDisconnected)
{
return;
}
static const S32 max_concurrent_fetches(50);
if (mFetchCount >= max_concurrent_fetches)
{
return;
}
// Don't loop for too long (in case of large, fully loaded inventory)
F64 curent_time = LLTimer::getTotalSeconds();
const F64 max_time = 0.006f; // 6 ms
const F64 end_time = curent_time + max_time;
while (!mFetchQueue.empty() && mFetchCount < max_concurrent_fetches && curent_time < end_time)
{
const FetchQueueInfo & fetch_info(mFetchQueue.front());
bulkFetchViaAis(fetch_info);
mFetchQueue.pop_front();
curent_time = LLTimer::getTotalSeconds();
}
if (isBulkFetchProcessingComplete())
{
setAllFoldersFetched();
}
}
void LLInventoryModelBackgroundFetch::bulkFetchViaAis(const FetchQueueInfo& fetch_info)
{
if (fetch_info.mIsCategory)
{
const LLUUID & cat_id(fetch_info.mUUID);
if (cat_id.isNull()) // Lost and found
{
AISAPI::FetchCategoryChildren(LLUUID::null, AISAPI::INVENTORY, false, ais_simple_callback);
mFetchCount++;
}
else
{
const LLViewerInventoryCategory * cat(gInventory.getCategory(cat_id));
if (cat)
{
if (LLViewerInventoryCategory::VERSION_UNKNOWN == cat->getVersion())
{
if (ALEXANDRIA_LINDEN_ID == cat->getOwnerID())
{
AISAPI::FetchCategoryChildren(cat->getUUID(), AISAPI::LIBRARY, fetch_info.mRecursive == RT_RECURSIVE, ais_simple_callback);
}
else
{
LLUUID cat_id = cat->getUUID();
ERecursionType type = fetch_info.mRecursive;
AISAPI::FetchCategoryChildren(
cat_id,
AISAPI::INVENTORY,
type == RT_RECURSIVE,
[cat_id, type](const LLUUID &response_id)
{
LLInventoryModelBackgroundFetch::instance().onAISCalback(cat_id, response_id, type);
});
}
mFetchCount++;
}
else
{
// Already fetched, check if anything inside needs fetching
if (fetch_info.mRecursive)
{
LLInventoryModel::cat_array_t * categories(NULL);
LLInventoryModel::item_array_t * items(NULL);
gInventory.getDirectDescendentsOf(cat_id, categories, items);
for (LLInventoryModel::cat_array_t::const_iterator it = categories->begin();
it != categories->end();
++it)
{
// not push_front to not cause an infinite loop
mFetchQueue.push_back(FetchQueueInfo((*it)->getUUID(), fetch_info.mRecursive));
}
}
}
} // else?
}
}
else
{
LLViewerInventoryItem * itemp(gInventory.getItem(fetch_info.mUUID));
if (itemp)
{
if (itemp->getPermissions().getOwner() == gAgent.getID())
{
AISAPI::FetchItem(itemp->getUUID(), AISAPI::INVENTORY, ais_simple_callback);
}
else
{
AISAPI::FetchItem(itemp->getUUID(), AISAPI::LIBRARY, ais_simple_callback);
}
mFetchCount++;
}
}
}
// Bundle up a bunch of requests to send all at once.
void LLInventoryModelBackgroundFetch::bulkFetch()
{
LL_RECORD_BLOCK_TIME(FTM_BULK_FETCH);
//Background fetch is called from gIdleCallbacks in a loop until background fetch is stopped.
//If there are items in mFetchQueue, we want to check the time since the last bulkFetch was
//sent. If it exceeds our retry time, go ahead and fire off another batch.
LLViewerRegion * region(gAgent.getRegion());
if (! region || gDisconnected)
{
return;
}
// *TODO: These values could be tweaked at runtime to effect
// a fast/slow fetch throttle. Once login is complete and the scene
// is mostly loaded, we could turn up the throttle and fill missing
// inventory more quickly.
static const U32 max_batch_size(10);
static const S32 max_concurrent_fetches(12); // Outstanding requests, not connections
if (mFetchCount)
{
// Process completed background HTTP requests
gInventory.handleResponses(false);
// Just processed a bunch of items.
// Note: do we really need notifyObservers() here?
// OnIdle it will be called anyway due to Add flag for processed item.
// It seems like in some cases we are updaiting on fail (no flag),
// but is there anything to update?
// <FS:Ansariel> FIRE-21376: Inventory not loading properly on OpenSim
//gInventory.notifyObservers();
if (LLGridManager::getInstance()->isInSecondLife())
{
gInventory.notifyObservers();
}
// </FS:Ansariel>
}
if (mFetchCount > max_concurrent_fetches)
{
return;
}
U32 item_count(0);
U32 folder_count(0);
const U32 sort_order(gSavedSettings.getU32(LLInventoryPanel::DEFAULT_SORT_ORDER) & 0x1);
// *TODO: Think I'd like to get a shared pointer to this and share it
// among all the folder requests.
uuid_vec_t recursive_cats;
LLSD folder_request_body;
LLSD folder_request_body_lib;
LLSD item_request_body;
LLSD item_request_body_lib;
while (! mFetchQueue.empty()
&& (item_count + folder_count) < max_batch_size)
{
const FetchQueueInfo & fetch_info(mFetchQueue.front());
if (fetch_info.mIsCategory)
{
const LLUUID & cat_id(fetch_info.mUUID);
if (cat_id.isNull()) //DEV-17797 Lost and found
{
LLSD folder_sd;
folder_sd["folder_id"] = LLUUID::null.asString();
folder_sd["owner_id"] = gAgent.getID();
folder_sd["sort_order"] = LLSD::Integer(sort_order);
folder_sd["fetch_folders"] = LLSD::Boolean(false);
folder_sd["fetch_items"] = LLSD::Boolean(true);
folder_request_body["folders"].append(folder_sd);
folder_count++;
}
else
{
const LLViewerInventoryCategory * cat(gInventory.getCategory(cat_id));
if (cat)
{
if (LLViewerInventoryCategory::VERSION_UNKNOWN == cat->getVersion())
{
LLSD folder_sd;
folder_sd["folder_id"] = cat->getUUID();
folder_sd["owner_id"] = cat->getOwnerID();
folder_sd["sort_order"] = LLSD::Integer(sort_order);
folder_sd["fetch_folders"] = LLSD::Boolean(true); //(LLSD::Boolean)sFullFetchStarted;
folder_sd["fetch_items"] = LLSD::Boolean(true);
// <FS:Beq> correct library owner for OpenSim (Rye)
// if (ALEXANDRIA_LINDEN_ID == cat->getOwnerID())
if (gInventory.getLibraryOwnerID() == cat->getOwnerID())
// </FS:Beq>
{
folder_request_body_lib["folders"].append(folder_sd);
}
else
{
folder_request_body["folders"].append(folder_sd);
}
folder_count++;
}
else
{
// May already have this folder, but append child folders to list.
if (fetch_info.mRecursive)
{
LLInventoryModel::cat_array_t * categories(NULL);
LLInventoryModel::item_array_t * items(NULL);
gInventory.getDirectDescendentsOf(cat_id, categories, items);
for (LLInventoryModel::cat_array_t::const_iterator it = categories->begin();
it != categories->end();
++it)
{
mFetchQueue.push_back(FetchQueueInfo((*it)->getUUID(), fetch_info.mRecursive));
}
}
}
}
}
if (fetch_info.mRecursive)
{
recursive_cats.push_back(cat_id);
}
}
else
{
LLViewerInventoryItem * itemp(gInventory.getItem(fetch_info.mUUID));
if (itemp)
{
LLSD item_sd;
item_sd["owner_id"] = itemp->getPermissions().getOwner();
item_sd["item_id"] = itemp->getUUID();
if (itemp->getPermissions().getOwner() == gAgent.getID())
{
item_request_body.append(item_sd);
}
else
{
item_request_body_lib.append(item_sd);
}
//itemp->fetchFromServer();
item_count++;
}
}
mFetchQueue.pop_front();
}
// Issue HTTP POST requests to fetch folders and items
if (item_count + folder_count > 0)
{
if (folder_count)
{
if (folder_request_body["folders"].size())
{
const std::string url(region->getCapability("FetchInventoryDescendents2"));
if (! url.empty())
{
LLCore::HttpHandler::ptr_t handler(new BGFolderHttpHandler(folder_request_body, recursive_cats));
gInventory.requestPost(false, url, folder_request_body, handler, "Inventory Folder");
}
}
if (folder_request_body_lib["folders"].size())
{
const std::string url(region->getCapability("FetchLibDescendents2"));
if (! url.empty())
{
LLCore::HttpHandler::ptr_t handler(new BGFolderHttpHandler(folder_request_body_lib, recursive_cats));
gInventory.requestPost(false, url, folder_request_body_lib, handler, "Library Folder");
}
}
} // if (folder_count)
if (item_count)
{
if (item_request_body.size())
{
const std::string url(region->getCapability("FetchInventory2"));
if (! url.empty())
{
LLSD body;
body["items"] = item_request_body;
LLCore::HttpHandler::ptr_t handler(new BGItemHttpHandler(body));
gInventory.requestPost(false, url, body, handler, "Inventory Item");
}
}
if (item_request_body_lib.size())
{
const std::string url(region->getCapability("FetchLib2"));
if (! url.empty())
{
LLSD body;
body["items"] = item_request_body_lib;
LLCore::HttpHandler::ptr_t handler(new BGItemHttpHandler(body));
gInventory.requestPost(false, url, body, handler, "Library Item");
}
}
} // if (item_count)
mFetchTimer.reset();
}
else if (isBulkFetchProcessingComplete())
{
setAllFoldersFetched();
}
}
bool LLInventoryModelBackgroundFetch::fetchQueueContainsNoDescendentsOf(const LLUUID & cat_id) const
{
for (fetch_queue_t::const_iterator it = mFetchQueue.begin();
it != mFetchQueue.end();
++it)
{
const LLUUID & fetch_id = (*it).mUUID;
if (gInventory.isObjectDescendentOf(fetch_id, cat_id))
return false;
}
return true;
}
namespace
{
///----------------------------------------------------------------------------
/// Class <anonymous>::BGFolderHttpHandler
///----------------------------------------------------------------------------
void BGFolderHttpHandler::onCompleted(LLCore::HttpHandle handle, LLCore::HttpResponse * response)
{
do // Single-pass do-while used for common exit handling
{
LLCore::HttpStatus status(response->getStatus());
// status = LLCore::HttpStatus(404); // Dev tool to force error handling
if (! status)
{
processFailure(status, response);
break; // Goto common exit
}
// Response body should be present.
LLCore::BufferArray * body(response->getBody());
// body = NULL; // Dev tool to force error handling
if (! body || ! body->size())
{
LL_WARNS(LOG_INV) << "Missing data in inventory folder query." << LL_ENDL;
processFailure("HTTP response missing expected body", response);
break; // Goto common exit
}
// Could test 'Content-Type' header but probably unreliable.
// Convert response to LLSD
// body->write(0, "Garbage Response", 16); // Dev tool to force error handling
LLSD body_llsd;
if (! LLCoreHttpUtil::responseToLLSD(response, true, body_llsd))
{
// INFOS-level logging will occur on the parsed failure
processFailure("HTTP response contained malformed LLSD", response);
break; // goto common exit
}
// Expect top-level structure to be a map
// body_llsd = LLSD::emptyArray(); // Dev tool to force error handling
if (! body_llsd.isMap())
{
processFailure("LLSD response not a map", response);
break; // goto common exit
}
// Check for 200-with-error failures
//
// See comments in llinventorymodel.cpp about this mode of error.
//
// body_llsd["error"] = LLSD::emptyMap(); // Dev tool to force error handling
// body_llsd["error"]["identifier"] = "Development";
// body_llsd["error"]["message"] = "You left development code in the viewer";
if (body_llsd.has("error"))
{
processFailure("Inventory application error (200-with-error)", response);
break; // goto common exit
}
// Okay, process data if possible
processData(body_llsd, response);
}
while (false);
}
void BGFolderHttpHandler::processData(LLSD & content, LLCore::HttpResponse * response)
{
LLInventoryModelBackgroundFetch * fetcher(LLInventoryModelBackgroundFetch::getInstance());
// API V2 and earlier should probably be testing for "error" map
// in response as an application-level error.
// Instead, we assume success and attempt to extract information.
if (content.has("folders"))
{
LLSD folders(content["folders"]);
for (LLSD::array_const_iterator folder_it = folders.beginArray();
folder_it != folders.endArray();
++folder_it)
{
LLSD folder_sd(*folder_it);
//LLUUID agent_id = folder_sd["agent_id"];
//if(agent_id != gAgent.getID()) //This should never happen.
//{
// LL_WARNS(LOG_INV) << "Got a UpdateInventoryItem for the wrong agent."
// << LL_ENDL;
// break;
//}
LLUUID parent_id(folder_sd["folder_id"].asUUID());
LLUUID owner_id(folder_sd["owner_id"].asUUID());
S32 version(folder_sd["version"].asInteger());
S32 descendents(folder_sd["descendents"].asInteger());
LLPointer<LLViewerInventoryCategory> tcategory = new LLViewerInventoryCategory(owner_id);
if (parent_id.isNull())
{
LLSD items(folder_sd["items"]);
LLPointer<LLViewerInventoryItem> titem = new LLViewerInventoryItem;
for (LLSD::array_const_iterator item_it = items.beginArray();
item_it != items.endArray();
++item_it)
{
const LLUUID lost_uuid(gInventory.findCategoryUUIDForType(LLFolderType::FT_LOST_AND_FOUND));
if (lost_uuid.notNull())
{
LLSD item(*item_it);
titem->unpackMessage(item);
LLInventoryModel::update_list_t update;
LLInventoryModel::LLCategoryUpdate new_folder(lost_uuid, 1);
update.push_back(new_folder);
gInventory.accountForUpdate(update);
titem->setParent(lost_uuid);
titem->updateParentOnServer(FALSE);
gInventory.updateItem(titem);
// <FS:Ansariel> FIRE-21376: Inventory not loading properly on OpenSim
if (!LLGridManager::getInstance()->isInSecondLife())
{
gInventory.notifyObservers();
}
// </FS:Ansariel>
}
}
}
LLViewerInventoryCategory * pcat(gInventory.getCategory(parent_id));
if (! pcat)
{
continue;
}
LLSD categories(folder_sd["categories"]);
for (LLSD::array_const_iterator category_it = categories.beginArray();
category_it != categories.endArray();
++category_it)
{
LLSD category(*category_it);
tcategory->fromLLSD(category);
const bool recursive(getIsRecursive(tcategory->getUUID()));
if (recursive)
{
fetcher->addRequestAtBack(tcategory->getUUID(), recursive, true);
}
else if (! gInventory.isCategoryComplete(tcategory->getUUID()))
{
gInventory.updateCategory(tcategory);
}
}
LLSD items(folder_sd["items"]);
LLPointer<LLViewerInventoryItem> titem = new LLViewerInventoryItem;
for (LLSD::array_const_iterator item_it = items.beginArray();
item_it != items.endArray();
++item_it)
{
LLSD item(*item_it);
titem->unpackMessage(item);
gInventory.updateItem(titem);
}
// Set version and descendentcount according to message.
LLViewerInventoryCategory * cat(gInventory.getCategory(parent_id));
if (cat)
{
cat->setVersion(version);
cat->setDescendentCount(descendents);
cat->determineFolderType();
}
}
}
if (content.has("bad_folders"))
{
LLSD bad_folders(content["bad_folders"]);
for (LLSD::array_const_iterator folder_it = bad_folders.beginArray();
folder_it != bad_folders.endArray();
++folder_it)
{
// *TODO: Stop copying data [ed: this isn't copying data]
LLSD folder_sd(*folder_it);
// These folders failed on the dataserver. We probably don't want to retry them.
LL_WARNS(LOG_INV) << "Folder " << folder_sd["folder_id"].asString()
<< "Error: " << folder_sd["error"].asString() << LL_ENDL;
}
}
if (fetcher->isBulkFetchProcessingComplete())
{
fetcher->setAllFoldersFetched();
}
// <FS:Ansariel> FIRE-21376: Inventory not loading properly on OpenSim
if (!LLGridManager::getInstance()->isInSecondLife())
{
gInventory.notifyObservers();
}
// </FS:Ansariel>
}
void BGFolderHttpHandler::processFailure(LLCore::HttpStatus status, LLCore::HttpResponse * response)
{
const std::string & ct(response->getContentType());
LL_WARNS(LOG_INV) << "Inventory folder fetch failure\n"
<< "[Status: " << status.toTerseString() << "]\n"
<< "[Reason: " << status.toString() << "]\n"
<< "[Content-type: " << ct << "]\n"
<< "[Content (abridged): "
<< LLCoreHttpUtil::responseToString(response) << "]" << LL_ENDL;
// Could use a 404 test here to try to detect revoked caps...
// This was originally the request retry logic for the inventory
// request which tested on HTTP_INTERNAL_ERROR status. This
// retry logic was unbounded and lacked discrimination as to the
// cause of the retry. The new http library should be doing
// adquately on retries but I want to keep the structure of a
// retry for reference.
LLInventoryModelBackgroundFetch *fetcher = LLInventoryModelBackgroundFetch::getInstance();
if (false)
{
// timed out or curl failure
for (LLSD::array_const_iterator folder_it = mRequestSD["folders"].beginArray();
folder_it != mRequestSD["folders"].endArray();
++folder_it)
{
LLSD folder_sd(*folder_it);
LLUUID folder_id(folder_sd["folder_id"].asUUID());
const BOOL recursive = getIsRecursive(folder_id);
fetcher->addRequestAtFront(folder_id, recursive, true);
}
}
else
{
if (fetcher->isBulkFetchProcessingComplete())
{
fetcher->setAllFoldersFetched();
}
}
// <FS:Ansariel> FIRE-21376: Inventory not loading properly on OpenSim
if (!LLGridManager::getInstance()->isInSecondLife())
{
gInventory.notifyObservers();
}
// </FS:Ansariel>
}
void BGFolderHttpHandler::processFailure(const char * const reason, LLCore::HttpResponse * response)
{
LL_WARNS(LOG_INV) << "Inventory folder fetch failure\n"
<< "[Status: internal error]\n"
<< "[Reason: " << reason << "]\n"
<< "[Content (abridged): "
<< LLCoreHttpUtil::responseToString(response) << "]" << LL_ENDL;
// Reverse of previous processFailure() method, this is invoked
// when response structure is found to be invalid. Original
// always re-issued the request (without limit). This does
// the same but be aware that this may be a source of problems.
// Philosophy is that inventory folders are so essential to
// operation that this is a reasonable action.
LLInventoryModelBackgroundFetch *fetcher = LLInventoryModelBackgroundFetch::getInstance();
if (true)
{
for (LLSD::array_const_iterator folder_it = mRequestSD["folders"].beginArray();
folder_it != mRequestSD["folders"].endArray();
++folder_it)
{
LLSD folder_sd(*folder_it);
LLUUID folder_id(folder_sd["folder_id"].asUUID());
const BOOL recursive = getIsRecursive(folder_id);
fetcher->addRequestAtFront(folder_id, recursive, true);
}
}
else
{
if (fetcher->isBulkFetchProcessingComplete())
{
fetcher->setAllFoldersFetched();
}
}
// <FS:Ansariel> FIRE-21376: Inventory not loading properly on OpenSim
if (!LLGridManager::getInstance()->isInSecondLife())
{
gInventory.notifyObservers();
}
// </FS:Ansariel>
}
bool BGFolderHttpHandler::getIsRecursive(const LLUUID & cat_id) const
{
return std::find(mRecursiveCatUUIDs.begin(), mRecursiveCatUUIDs.end(), cat_id) != mRecursiveCatUUIDs.end();
}
///----------------------------------------------------------------------------
/// Class <anonymous>::BGItemHttpHandler
///----------------------------------------------------------------------------
// Nothing to implement here. All ctor/dtor changes.
} // end namespace anonymous
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