llviewerassetstorage.cpp
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:8k
源码类别:
游戏引擎
开发平台:
C++ Builder
- /**
- * @file llviewerassetstorage.cpp
- * @brief Subclass capable of loading asset data to/from an external source.
- *
- * $LicenseInfo:firstyear=2003&license=viewergpl$
- *
- * Copyright (c) 2003-2010, 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.
- * $/LicenseInfo$
- */
- #include "llviewerprecompiledheaders.h"
- #include "llviewerassetstorage.h"
- #include "llvfile.h"
- #include "llvfs.h"
- #include "message.h"
- #include "llagent.h"
- LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer,
- LLVFS *vfs, const LLHost &upstream_host)
- : LLAssetStorage(msg, xfer, vfs, upstream_host)
- {
- }
- LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer,
- LLVFS *vfs)
- : LLAssetStorage(msg, xfer, vfs)
- {
- }
- // virtual
- void LLViewerAssetStorage::storeAssetData(
- const LLTransactionID& tid,
- LLAssetType::EType asset_type,
- LLStoreAssetCallback callback,
- void* user_data,
- bool temp_file,
- bool is_priority,
- bool store_local,
- bool user_waiting,
- F64 timeout)
- {
- LLAssetID asset_id = tid.makeAssetID(gAgent.getSecureSessionID());
- llinfos << "LLViewerAssetStorage::storeAssetData (legacy) " << tid << ":" << LLAssetType::lookup(asset_type)
- << " ASSET_ID: " << asset_id << llendl;
- if (mUpstreamHost.isOk())
- {
- if (mVFS->getExists(asset_id, asset_type))
- {
- // Pack data into this packet if we can fit it.
- U8 buffer[MTUBYTES];
- buffer[0] = 0;
- LLVFile vfile(mVFS, asset_id, asset_type, LLVFile::READ);
- S32 asset_size = vfile.getSize();
- LLAssetRequest *req = new LLAssetRequest(asset_id, asset_type);
- req->mUpCallback = callback;
- req->mUserData = user_data;
- if (asset_size < 1)
- {
- // This can happen if there's a bug in our code or if the VFS has been corrupted.
- llwarns << "LLViewerAssetStorage::storeAssetData() Data _should_ already be in the VFS, but it's not! " << asset_id << llendl;
- // LLAssetStorage metric: Zero size VFS
- reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_ZERO_SIZE, __FILE__, __LINE__, "The file didn't exist or was zero length (VFS - can't tell which)" );
- delete req;
- if (callback)
- {
- callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_FAILED, LL_EXSTAT_VFS_CORRUPT);
- }
- return;
- }
- else
- {
- // LLAssetStorage metric: Successful Request
- S32 size = mVFS->getSize(asset_id, asset_type);
- const char *message = "Added to upload queue";
- reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, size, MR_OKAY, __FILE__, __LINE__, message );
- if(is_priority)
- {
- mPendingUploads.push_front(req);
- }
- else
- {
- mPendingUploads.push_back(req);
- }
- }
- // Read the data from the VFS if it'll fit in this packet.
- if (asset_size + 100 < MTUBYTES)
- {
- BOOL res = vfile.read(buffer, asset_size); /* Flawfinder: ignore */
- S32 bytes_read = res ? vfile.getLastBytesRead() : 0;
- if( bytes_read == asset_size )
- {
- req->mDataSentInFirstPacket = TRUE;
- //llinfos << "LLViewerAssetStorage::createAsset sending data in first packet" << llendl;
- }
- else
- {
- llwarns << "Probable corruption in VFS file, aborting store asset data" << llendl;
- // LLAssetStorage metric: VFS corrupt - bogus size
- reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, asset_size, MR_VFS_CORRUPTION, __FILE__, __LINE__, "VFS corruption" );
- if (callback)
- {
- callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_NONEXISTENT_FILE, LL_EXSTAT_VFS_CORRUPT);
- }
- return;
- }
- }
- else
- {
- // Too big, do an xfer
- buffer[0] = 0;
- asset_size = 0;
- }
- mMessageSys->newMessageFast(_PREHASH_AssetUploadRequest);
- mMessageSys->nextBlockFast(_PREHASH_AssetBlock);
- mMessageSys->addUUIDFast(_PREHASH_TransactionID, tid);
- mMessageSys->addS8Fast(_PREHASH_Type, (S8)asset_type);
- mMessageSys->addBOOLFast(_PREHASH_Tempfile, temp_file);
- mMessageSys->addBOOLFast(_PREHASH_StoreLocal, store_local);
- mMessageSys->addBinaryDataFast( _PREHASH_AssetData, buffer, asset_size );
- mMessageSys->sendReliable(mUpstreamHost);
- }
- else
- {
- llwarns << "AssetStorage: attempt to upload non-existent vfile " << asset_id << ":" << LLAssetType::lookup(asset_type) << llendl;
- // LLAssetStorage metric: Zero size VFS
- reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_ZERO_SIZE, __FILE__, __LINE__, "The file didn't exist or was zero length (VFS - can't tell which)" );
- if (callback)
- {
- callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_NONEXISTENT_FILE, LL_EXSTAT_NONEXISTENT_FILE);
- }
- }
- }
- else
- {
- llwarns << "Attempt to move asset store request upstream w/o valid upstream provider" << llendl;
- // LLAssetStorage metric: Upstream provider dead
- reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_NO_UPSTREAM, __FILE__, __LINE__, "No upstream provider" );
- if (callback)
- {
- callback(asset_id, user_data, LL_ERR_CIRCUIT_GONE, LL_EXSTAT_NO_UPSTREAM);
- }
- }
- }
- void LLViewerAssetStorage::storeAssetData(
- const std::string& filename,
- const LLTransactionID& tid,
- LLAssetType::EType asset_type,
- LLStoreAssetCallback callback,
- void* user_data,
- bool temp_file,
- bool is_priority,
- bool user_waiting,
- F64 timeout)
- {
- if(filename.empty())
- {
- // LLAssetStorage metric: no filename
- reportMetric( LLUUID::null, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_VFS_CORRUPTION, __FILE__, __LINE__, "Filename missing" );
- llerrs << "No filename specified" << llendl;
- return;
- }
- LLAssetID asset_id = tid.makeAssetID(gAgent.getSecureSessionID());
- llinfos << "LLViewerAssetStorage::storeAssetData (legacy)" << asset_id << ":" << LLAssetType::lookup(asset_type) << llendl;
- llinfos << "ASSET_ID: " << asset_id << llendl;
- S32 size = 0;
- LLFILE* fp = LLFile::fopen(filename, "rb");
- if (fp)
- {
- fseek(fp, 0, SEEK_END);
- size = ftell(fp);
- fseek(fp, 0, SEEK_SET);
- }
- if( size )
- {
- LLLegacyAssetRequest *legacy = new LLLegacyAssetRequest;
- legacy->mUpCallback = callback;
- legacy->mUserData = user_data;
- LLVFile file(mVFS, asset_id, asset_type, LLVFile::WRITE);
- file.setMaxSize(size);
- const S32 buf_size = 65536;
- U8 copy_buf[buf_size];
- while ((size = (S32)fread(copy_buf, 1, buf_size, fp)))
- {
- file.write(copy_buf, size);
- }
- fclose(fp);
- // if this upload fails, the caller needs to setup a new tempfile for us
- if (temp_file)
- {
- LLFile::remove(filename);
- }
- // LLAssetStorage metric: Success not needed; handled in the overloaded method here:
- LLViewerAssetStorage::storeAssetData(
- tid,
- asset_type,
- legacyStoreDataCallback,
- (void**)legacy,
- temp_file,
- is_priority);
- }
- else // size == 0 (but previous block changes size)
- {
- if( fp )
- {
- // LLAssetStorage metric: Zero size
- reportMetric( asset_id, asset_type, filename, LLUUID::null, 0, MR_ZERO_SIZE, __FILE__, __LINE__, "The file was zero length" );
- }
- else
- {
- // LLAssetStorage metric: Missing File
- reportMetric( asset_id, asset_type, filename, LLUUID::null, 0, MR_FILE_NONEXIST, __FILE__, __LINE__, "The file didn't exist" );
- }
- if (callback)
- {
- callback(asset_id, user_data, LL_ERR_CANNOT_OPEN_FILE, LL_EXSTAT_BLOCKED_FILE);
- }
- }
- }