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/*
* Copyright (c) Contributors, http://opensimulator.org/
* 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 OpenSimulator 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 log4net;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Reflection;
using System.Text;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Services.Interfaces;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using GridRegion = OpenSim.Services.Interfaces.GridRegion;
namespace OpenSim.Services.Connectors
{
public class NeighbourServicesConnector : INeighbourService
{
private static readonly ILog m_log =
LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType);
protected IGridService m_GridService = null;
public NeighbourServicesConnector()
{
}
public NeighbourServicesConnector(IGridService gridServices)
{
Initialise(gridServices);
}
public virtual void Initialise(IGridService gridServices)
{
m_GridService = gridServices;
}
public virtual GridRegion HelloNeighbour(ulong regionHandle, RegionInfo thisRegion)
{
uint x = 0, y = 0;
Util.RegionHandleToWorldLoc(regionHandle, out x, out y);
GridRegion regInfo = m_GridService.GetRegionByPosition(thisRegion.ScopeID, (int)x, (int)y);
if ((regInfo != null) &&
// Don't remote-call this instance; that's a startup hickup
!((regInfo.ExternalHostName == thisRegion.ExternalHostName) && (regInfo.HttpPort == thisRegion.HttpPort)))
{
if (!DoHelloNeighbourCall(regInfo, thisRegion))
return null;
}
else
return null;
return regInfo;
}
public bool DoHelloNeighbourCall(GridRegion region, RegionInfo thisRegion)
{
string uri = region.ServerURI + "region/" + thisRegion.RegionID + "/";
// m_log.Debug(" >>> DoHelloNeighbourCall <<< " + uri);
WebRequest helloNeighbourRequest;
try
{
helloNeighbourRequest = WebRequest.Create(uri);
}
catch (Exception e)
{
m_log.Warn(string.Format(
"[NEIGHBOUR SERVICES CONNECTOR]: Unable to parse uri {0} to send HelloNeighbour from {1} to {2}. Exception {3} ",
uri, thisRegion.RegionName, region.RegionName, e.Message), e);
return false;
}
helloNeighbourRequest.Method = "POST";
helloNeighbourRequest.ContentType = "application/json";
helloNeighbourRequest.Timeout = 10000;
// Fill it in
OSDMap args = null;
try
{
args = thisRegion.PackRegionInfoData();
}
catch (Exception e)
{
m_log.Warn(string.Format(
"[NEIGHBOUR SERVICES CONNECTOR]: PackRegionInfoData failed for HelloNeighbour from {0} to {1}. Exception {2} ",
thisRegion.RegionName, region.RegionName, e.Message), e);
return false;
}
// Add the regionhandle of the destination region
args["destination_handle"] = OSD.FromString(region.RegionHandle.ToString());
string strBuffer = "";
byte[] buffer = new byte[1];
try
{
strBuffer = OSDParser.SerializeJsonString(args);
buffer = Util.UTF8NoBomEncoding.GetBytes(strBuffer);
}
catch (Exception e)
{
m_log.Warn(string.Format(
"[NEIGHBOUR SERVICES CONNECTOR]: Exception thrown on serialization of HelloNeighbour from {0} to {1}. Exception {2} ",
thisRegion.RegionName, region.RegionName, e.Message), e);
return false;
}
Stream os = null;
try
{ // send the Post
helloNeighbourRequest.ContentLength = buffer.Length; //Count bytes to send
os = helloNeighbourRequest.GetRequestStream();
os.Write(buffer, 0, strBuffer.Length); //Send it
//m_log.InfoFormat("[REST COMMS]: Posted HelloNeighbour request to remote sim {0}", uri);
}
catch (Exception e)
{
// m_log.WarnFormat(
// "[NEIGHBOUR SERVICE CONNCTOR]: Unable to send HelloNeighbour from {0} to {1}. Exception {2}{3}",
// thisRegion.RegionName, region.RegionName, e.Message, e.StackTrace);
return false;
}
finally
{
if (os != null)
os.Dispose();
}
// Let's wait for the response
//m_log.Info("[REST COMMS]: Waiting for a reply after DoHelloNeighbourCall");
try
{
using (WebResponse webResponse = helloNeighbourRequest.GetResponse())
{
if (webResponse == null)
{
m_log.DebugFormat(
"[NEIGHBOUR SERVICES CONNECTOR]: Null reply on DoHelloNeighbourCall post from {0} to {1}",
thisRegion.RegionName, region.RegionName);
}
using (Stream s = webResponse.GetResponseStream())
{
using (StreamReader sr = new StreamReader(s))
{
sr.ReadToEnd(); // just try to read
//reply = sr.ReadToEnd().Trim();
//m_log.InfoFormat("[REST COMMS]: DoHelloNeighbourCall reply was {0} ", reply);
}
}
}
}
catch (Exception e)
{
m_log.Warn(string.Format(
"[NEIGHBOUR SERVICES CONNECTOR]: Exception on reply of DoHelloNeighbourCall from {0} back to {1}. Exception {2} ",
region.RegionName, thisRegion.RegionName, e.Message), e);
return false;
}
return true;
}
}
}
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