1 files changed, 584 insertions, 0 deletions

diff --git a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs
new file mode 100644
index 0000000..26044f0
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs
@@ -0,0 +1,584 @@
+/*
+ * Copyright (c) Contributors 
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using Mono.Addins;
+
+using System;
+using System.Reflection;
+using System.Threading;
+using System.Text;
+using System.Net;
+using System.Net.Sockets;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenMetaverse.StructuredData;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
+{
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "JsonStoreModule")]
+
+    public class JsonStoreModule  : INonSharedRegionModule, IJsonStoreModule
+    {
+        private static readonly ILog m_log =
+            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private IConfig m_config = null;
+        private bool m_enabled = false;
+        private bool m_enableObjectStore = false;
+        private int m_maxStringSpace = Int32.MaxValue;
+
+        private Scene m_scene = null;
+
+        private Dictionary<UUID,JsonStore> m_JsonValueStore;
+
+        private UUID m_sharedStore;
+
+#region Region Module interface
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// Name of this shared module is it's class name
+        /// </summary>
+        // -----------------------------------------------------------------
+        public string Name
+        {
+            get { return this.GetType().Name; }
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// Initialise this shared module
+        /// </summary>
+        /// <param name="scene">this region is getting initialised</param>
+        /// <param name="source">nini config, we are not using this</param>
+        // -----------------------------------------------------------------
+        public void Initialise(IConfigSource config)
+        {
+            try 
+            {
+                if ((m_config = config.Configs["JsonStore"]) == null)
+                {
+                    // There is no configuration, the module is disabled
+                    // m_log.InfoFormat("[JsonStore] no configuration info");
+                    return;
+                }
+
+                m_enabled = m_config.GetBoolean("Enabled", m_enabled);
+                m_enableObjectStore = m_config.GetBoolean("EnableObjectStore", m_enableObjectStore);
+                m_maxStringSpace = m_config.GetInt("MaxStringSpace", m_maxStringSpace);
+                if (m_maxStringSpace == 0)
+                    m_maxStringSpace = Int32.MaxValue;
+            }
+            catch (Exception e)
+            {
+                m_log.Error("[JsonStore]: initialization error: {0}", e);
+                return;
+            }
+
+            if (m_enabled)
+                m_log.DebugFormat("[JsonStore]: module is enabled");
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// everything is loaded, perform post load configuration
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void PostInitialise()
+        {
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// Nothing to do on close
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void Close()
+        {
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void AddRegion(Scene scene)
+        {
+            if (m_enabled)
+            {
+                m_scene = scene;
+                m_scene.RegisterModuleInterface<IJsonStoreModule>(this);
+
+                m_sharedStore = UUID.Zero;
+                m_JsonValueStore = new Dictionary<UUID,JsonStore>();
+                m_JsonValueStore.Add(m_sharedStore,new JsonStore(""));
+
+                scene.EventManager.OnObjectBeingRemovedFromScene += EventManagerOnObjectBeingRemovedFromScene;
+            }
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void RemoveRegion(Scene scene)
+        {
+            scene.EventManager.OnObjectBeingRemovedFromScene -= EventManagerOnObjectBeingRemovedFromScene;
+
+            // need to remove all references to the scene in the subscription
+            // list to enable full garbage collection of the scene object
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// Called when all modules have been added for a region. This is 
+        /// where we hook up events
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void RegionLoaded(Scene scene)
+        {
+            if (m_enabled)
+            {
+            }
+        }
+
+        /// -----------------------------------------------------------------
+        /// <summary>
+        /// </summary>
+        // -----------------------------------------------------------------
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+#endregion
+
+#region SceneEvents
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void EventManagerOnObjectBeingRemovedFromScene(SceneObjectGroup obj)
+        {
+            obj.ForEachPart(delegate(SceneObjectPart sop) { DestroyStore(sop.UUID); } );
+        }
+
+#endregion
+
+#region ScriptInvocationInteface
+
+        
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public JsonStoreStats GetStoreStats()
+        {
+            JsonStoreStats stats;
+
+            lock (m_JsonValueStore)
+            {
+                stats.StoreCount = m_JsonValueStore.Count;
+            }
+            
+            return stats;
+        }
+        
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool AttachObjectStore(UUID objectID)
+        {
+            if (! m_enabled) return false;
+            if (! m_enableObjectStore) return false;
+
+            SceneObjectPart sop = m_scene.GetSceneObjectPart(objectID);
+            if (sop == null)
+            {
+                m_log.ErrorFormat("[JsonStore] unable to attach to unknown object; {0}", objectID);
+                return false;
+            }
+
+            lock (m_JsonValueStore)
+            {
+                if (m_JsonValueStore.ContainsKey(objectID))
+                    return true;
+                
+                JsonStore map = new JsonObjectStore(m_scene,objectID);
+                m_JsonValueStore.Add(objectID,map);
+            }
+            
+            return true;
+        }
+        
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool CreateStore(string value, ref UUID result)
+        {
+            if (result == UUID.Zero)
+                result = UUID.Random();
+
+            JsonStore map = null;
+            
+            if (! m_enabled) return false;
+            
+
+            try
+            { 
+                map = new JsonStore(value);
+            }
+            catch (Exception)
+            {
+                m_log.ErrorFormat("[JsonStore]: Unable to initialize store from {0}", value);
+                return false;
+            }
+
+            lock (m_JsonValueStore)
+                m_JsonValueStore.Add(result,map);
+            
+            return true;
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool DestroyStore(UUID storeID)
+        {
+            if (! m_enabled) return false;
+
+            lock (m_JsonValueStore)
+                return m_JsonValueStore.Remove(storeID);
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool TestStore(UUID storeID)
+        {
+            if (! m_enabled) return false;
+
+            lock (m_JsonValueStore)
+                return m_JsonValueStore.ContainsKey(storeID);
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public JsonStoreNodeType GetNodeType(UUID storeID, string path)
+        {
+            if (! m_enabled) return JsonStoreNodeType.Undefined;
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                {
+                    m_log.InfoFormat("[JsonStore] Missing store {0}",storeID);
+                    return JsonStoreNodeType.Undefined;
+                }
+            }
+            
+            try
+            {
+                lock (map)
+                    return map.GetNodeType(path);
+            }
+            catch (Exception e)
+            {
+                m_log.Error(string.Format("[JsonStore]: Path test failed for {0} in {1}", path, storeID), e);
+            }
+
+            return JsonStoreNodeType.Undefined;
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public JsonStoreValueType GetValueType(UUID storeID, string path)
+        {
+            if (! m_enabled) return JsonStoreValueType.Undefined;
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                {
+                    m_log.InfoFormat("[JsonStore] Missing store {0}",storeID);
+                    return JsonStoreValueType.Undefined;
+                }
+            }
+            
+            try
+            {
+                lock (map)
+                    return map.GetValueType(path);
+            }
+            catch (Exception e)
+            {
+                m_log.Error(string.Format("[JsonStore]: Path test failed for {0} in {1}", path, storeID), e);
+            }
+
+            return JsonStoreValueType.Undefined;
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool SetValue(UUID storeID, string path, string value, bool useJson)
+        {
+            if (! m_enabled) return false;
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                {
+                    m_log.InfoFormat("[JsonStore] Missing store {0}",storeID);
+                    return false;
+                }
+            }
+            
+            try
+            {
+                lock (map)
+                {
+                    if (map.StringSpace > m_maxStringSpace)
+                    {
+                        m_log.WarnFormat("[JsonStore] {0} exceeded string size; {1} bytes used of {2} limit",
+                                         storeID,map.StringSpace,m_maxStringSpace);
+                        return false;
+                    }
+                    
+                    return map.SetValue(path,value,useJson);
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.Error(string.Format("[JsonStore]: Unable to assign {0} to {1} in {2}", value, path, storeID), e);
+            }
+
+            return false;
+        }
+        
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool RemoveValue(UUID storeID, string path)
+        {
+            if (! m_enabled) return false;
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                {
+                    m_log.InfoFormat("[JsonStore] Missing store {0}",storeID);
+                    return false;
+                }
+            }
+            
+            try
+            {
+                lock (map)
+                    return map.RemoveValue(path);
+            }
+            catch (Exception e)
+            {
+                m_log.Error(string.Format("[JsonStore]: Unable to remove {0} in {1}", path, storeID), e);
+            }
+
+            return false;
+        }
+        
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public int GetArrayLength(UUID storeID, string path)
+        {
+            if (! m_enabled) return -1;
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                    return -1;
+            }
+
+            try
+            {
+                lock (map)
+                {
+                    return map.ArrayLength(path);
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.Error("[JsonStore]: unable to retrieve value", e);
+            }
+            
+            return -1;
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public bool GetValue(UUID storeID, string path, bool useJson, out string value)
+        {
+            value = String.Empty;
+            
+            if (! m_enabled) return false;
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                    return false;
+            }
+
+            try
+            {
+                lock (map)
+                {
+                    return map.GetValue(path, out value, useJson);
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.Error("[JsonStore]: unable to retrieve value", e);
+            }
+            
+            return false;
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void TakeValue(UUID storeID, string path, bool useJson, TakeValueCallback cback)
+        {
+            if (! m_enabled)
+            {
+                cback(String.Empty);
+                return;
+            }
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                {
+                    cback(String.Empty);
+                    return;
+                }
+            }
+
+            try
+            {
+                lock (map)
+                {
+                    map.TakeValue(path, useJson, cback);
+                    return;
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.Error("[JsonStore] unable to retrieve value", e);
+            }
+            
+            cback(String.Empty);
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        public void ReadValue(UUID storeID, string path, bool useJson, TakeValueCallback cback)
+        {
+            if (! m_enabled)
+            {
+                cback(String.Empty);
+                return;
+            }
+
+            JsonStore map = null;
+            lock (m_JsonValueStore)
+            {
+                if (! m_JsonValueStore.TryGetValue(storeID,out map))
+                {
+                    cback(String.Empty);
+                    return;
+                }
+            }
+
+            try
+            {
+                lock (map)
+                {
+                    map.ReadValue(path, useJson, cback);
+                    return;
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.Error("[JsonStore]: unable to retrieve value", e);
+            }
+            
+            cback(String.Empty);
+        }
+
+#endregion
+    }
+}