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291 lines
10 KiB
C#
291 lines
10 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Reflection;
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using System.Collections.Generic;
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using System.IO;
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using OpenMetaverse;
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using OpenSim.Framework;
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using log4net;
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namespace OpenSim.Grid.AssetInventoryServer.Plugins.Simple
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{
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public class SimpleAssetStoragePlugin : IAssetStorageProvider
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{
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const string EXTENSION_NAME = "SimpleAssetStorage"; // Used in metrics reporting
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const string DEFAULT_DATA_DIR = "SimpleAssets";
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const string TEMP_DATA_DIR = "SimpleAssetsTemp";
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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AssetInventoryServer server;
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Dictionary<UUID, AssetMetadata> metadataStorage;
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Dictionary<UUID, string> filenames;
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public SimpleAssetStoragePlugin()
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{
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}
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#region Required Interfaces
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public BackendResponse TryFetchMetadata(UUID assetID, out AssetMetadata metadata)
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{
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metadata = null;
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BackendResponse ret;
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if (metadataStorage.TryGetValue(assetID, out metadata))
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ret = BackendResponse.Success;
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else
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ret = BackendResponse.NotFound;
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server.MetricsProvider.LogAssetMetadataFetch(EXTENSION_NAME, ret, assetID, DateTime.Now);
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return ret;
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}
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public BackendResponse TryFetchData(UUID assetID, out byte[] assetData)
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{
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assetData = null;
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string filename;
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BackendResponse ret;
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if (filenames.TryGetValue(assetID, out filename))
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{
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try
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{
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assetData = File.ReadAllBytes(filename);
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ret = BackendResponse.Success;
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}
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catch (Exception ex)
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{
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m_log.ErrorFormat("[SIMPLEASSETSTORAGE]: Failed reading data for asset {0} from {1}: {2}", assetID, filename, ex.Message);
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ret = BackendResponse.Failure;
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}
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}
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else
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{
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ret = BackendResponse.NotFound;
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}
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server.MetricsProvider.LogAssetDataFetch(EXTENSION_NAME, ret, assetID, (assetData != null ? assetData.Length : 0), DateTime.Now);
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return ret;
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}
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public BackendResponse TryFetchDataMetadata(UUID assetID, out AssetBase asset)
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{
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asset = new AssetBase();
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AssetMetadata metadata = asset.Metadata;
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string filename;
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BackendResponse ret;
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if (metadataStorage.TryGetValue(assetID, out metadata) &&
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filenames.TryGetValue(assetID, out filename))
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{
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try
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{
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asset.Data = File.ReadAllBytes(filename);
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ret = BackendResponse.Success;
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}
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catch (Exception ex)
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{
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m_log.ErrorFormat("[SIMPLEASSETSTORAGE]: Failed reading data for asset {0} from {1}: {2}", assetID, filename, ex.Message);
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ret = BackendResponse.Failure;
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}
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asset.Type = (sbyte) Utils.ContentTypeToSLAssetType(metadata.ContentType);
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asset.Local = false;
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}
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else
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{
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asset = null;
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ret = BackendResponse.NotFound;
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}
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server.MetricsProvider.LogAssetMetadataFetch(EXTENSION_NAME, ret, assetID, DateTime.Now);
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server.MetricsProvider.LogAssetDataFetch(EXTENSION_NAME, ret, assetID, (asset != null && asset.Data != null ? asset.Data.Length : 0), DateTime.Now);
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return ret;
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}
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public BackendResponse TryCreateAsset(AssetBase asset, out UUID assetID)
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{
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assetID = asset.FullID = UUID.Random();
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return TryCreateAsset(asset);
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}
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public BackendResponse TryCreateAsset(AssetBase asset)
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{
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BackendResponse ret;
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AssetMetadata metadata = asset.Metadata;
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string path;
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string filename = String.Format("{0}.{1}", asset.FullID, Utils.ContentTypeToExtension(metadata.ContentType));
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if (asset.Temporary)
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path = Path.Combine(TEMP_DATA_DIR, filename);
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else
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path = Path.Combine(DEFAULT_DATA_DIR, filename);
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try
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{
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File.WriteAllBytes(path, asset.Data);
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lock (filenames) filenames[asset.FullID] = path;
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// Set the creation date to right now
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metadata.CreationDate = DateTime.Now;
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lock (metadataStorage)
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metadataStorage[asset.FullID] = metadata;
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ret = BackendResponse.Success;
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}
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catch (Exception ex)
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{
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m_log.ErrorFormat("[SIMPLEASSETSTORAGE]: Failed writing data for asset {0} to {1}: {2}", asset.FullID, filename, ex.Message);
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ret = BackendResponse.Failure;
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}
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server.MetricsProvider.LogAssetCreate(EXTENSION_NAME, ret, asset.FullID, asset.Data.Length, DateTime.Now);
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return ret;
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}
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public int ForEach(Action<AssetMetadata> action, int start, int count)
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{
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int rowCount = 0;
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//lock (metadataStorage)
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//{
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// foreach (Metadata metadata in metadataStorage.Values)
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// {
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// action(metadata);
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// ++rowCount;
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// }
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//}
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return rowCount;
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}
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#endregion Required Interfaces
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#region IPlugin implementation
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public void Initialise(AssetInventoryServer server)
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{
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this.server = server;
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metadataStorage = new Dictionary<UUID, AssetMetadata>();
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filenames = new Dictionary<UUID, string>();
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LoadFiles(DEFAULT_DATA_DIR, false);
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LoadFiles(TEMP_DATA_DIR, true);
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m_log.InfoFormat("[SIMPLEASSETSTORAGE]: Initialized the store index with metadata for {0} assets",
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metadataStorage.Count);
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}
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/// <summary>
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/// <para>Initialises asset interface</para>
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/// </summary>
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public void Initialise()
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{
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m_log.InfoFormat("[SIMPLEASSETSTORAGE]: {0} cannot be default-initialized!", Name);
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throw new PluginNotInitialisedException(Name);
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}
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public void Dispose()
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{
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WipeTemporary();
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}
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public string Version
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{
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// TODO: this should be something meaningful and not hardcoded?
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get { return "0.1"; }
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}
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public string Name
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{
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get { return "SimpleAssetStorage"; }
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}
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#endregion IPlugin implementation
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public void WipeTemporary()
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{
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if (Directory.Exists(TEMP_DATA_DIR))
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{
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try { Directory.Delete(TEMP_DATA_DIR); }
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catch (Exception ex) { m_log.Error("[SIMPLEASSETSTORAGE]: " + ex.Message); }
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}
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}
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void LoadFiles(string folder, bool temporary)
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{
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// Try to create the directory if it doesn't already exist
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if (!Directory.Exists(folder))
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{
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try { Directory.CreateDirectory(folder); }
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catch (Exception ex)
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{
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m_log.Warn("[SIMPLEASSETSTORAGE]: " + ex.Message);
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return;
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}
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}
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lock (metadataStorage)
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{
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try
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{
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string[] assets = Directory.GetFiles(folder);
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for (int i = 0; i < assets.Length; i++)
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{
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string filename = assets[i];
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byte[] data = File.ReadAllBytes(filename);
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AssetMetadata metadata = new AssetMetadata();
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metadata.CreationDate = File.GetCreationTime(filename);
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metadata.Description = String.Empty;
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metadata.FullID = SimpleUtils.ParseUUIDFromFilename(filename);
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metadata.Name = SimpleUtils.ParseNameFromFilename(filename);
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metadata.SHA1 = OpenMetaverse.Utils.SHA1(data);
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metadata.Temporary = false;
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metadata.ContentType = Utils.ExtensionToContentType(Path.GetExtension(filename).TrimStart('.'));
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// Store the loaded data
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metadataStorage[metadata.FullID] = metadata;
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filenames[metadata.FullID] = filename;
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}
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}
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catch (Exception ex)
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{
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m_log.Warn("[SIMPLEASSETSTORAGE]: " + ex.Message);
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}
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}
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}
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}
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}
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