This commit adds a new optional region module, JsonStore, that provides structured

storage (dictionaries and arrays of string values) for scripts and region modules.
In addition, there are operations on the storage that enable "real" distributed
computation between scripts through operations similar to those of a tuple space.
Scripts can share task queues, implement shared locks or semaphores, etc.

The structured store is limited to the current region and is not currently
persisted. However, script operations are defined to initialize a store from a notecard
and to serialize the store to a notecard.

Documentation will be posted to the opensim wiki soon.

1 files changed, 48 insertions, 0 deletions

diff --git a/OpenSim/Region/Framework/Interfaces/IJsonStoreModule.cs b/OpenSim/Region/Framework/Interfaces/IJsonStoreModule.cs
new file mode 100644
index 0000000..baac6e8
--- /dev/null
+++ b/OpenSim/Region/Framework/Interfaces/IJsonStoreModule.cs
@@ -0,0 +1,48 @@
+/*
+ * 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 System;
+using System.Reflection;
+using OpenMetaverse;
+
+namespace OpenSim.Region.Framework.Interfaces
+{
+    public delegate void TakeValueCallback(string s);
+
+    public interface IJsonStoreModule
+    {
+        bool CreateStore(string value, out UUID result);
+        bool DestroyStore(UUID storeID);
+        bool TestPath(UUID storeID, string path, bool useJson);
+        bool SetValue(UUID storeID, string path, string value, bool useJson);
+        bool RemoveValue(UUID storeID, string path);
+        bool GetValue(UUID storeID, string path, bool useJson, out string value);
+
+        void TakeValue(UUID storeID, string path, bool useJson, TakeValueCallback cback);
+        void ReadValue(UUID storeID, string path, bool useJson, TakeValueCallback cback);
+    }
+}