OpenSim-Test/OpenSim/Framework/Communications/Capabilities/CapsHandlers.cs

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using System.Collections;
using System.Collections.Generic;
using OpenSim.Framework.Servers;

namespace OpenSim.Framework.Communications.Capabilities
{
    /// <summary>
    /// CapsHandlers is a cap handler container but also takes
    /// care of adding and removing cap handlers to and from the
    /// supplied BaseHttpServer.
    /// </summary>
    public class CapsHandlers
    {
        private Dictionary <string, IRequestHandler> m_capsHandlers = new Dictionary<string, IRequestHandler>();
        private BaseHttpServer m_httpListener;
        private string m_httpListenerHostName;
        private uint m_httpListenerPort;

        /// <summary></summary>
        /// CapsHandlers is a cap handler container but also takes
        /// care of adding and removing cap handlers to and from the
        /// supplied BaseHttpServer.
        /// </summary>
        /// <param name="httpListener">base HTTP server</param>
        /// <param name="httpListenerHostname">host name of the HTTP
        /// server</param>
        /// <param name="httpListenerPort">HTTP port</param>
        public CapsHandlers(BaseHttpServer httpListener, string httpListenerHostname, uint httpListenerPort)
        {
            m_httpListener = httpListener;
            m_httpListenerHostName = httpListenerHostname;
            m_httpListenerPort = httpListenerPort;
        }

        /// <summary>
        /// Remove the cap handler for a capability.
        /// </summary>
        /// <param name="capsName">name of the capability of the cap
        /// handler to be removed</param>
        public void Remove(string capsName)
        {
            // This line must be here, or caps will break!
            m_httpListener.RemoveStreamHandler("POST", m_capsHandlers[capsName].Path);
            m_capsHandlers.Remove(capsName);
        }

        public bool ContainsCap(string cap)
        {
            return m_capsHandlers.ContainsKey(cap);
        }

        /// <summary>
        /// The indexer allows us to treat the CapsHandlers object
        /// in an intuitive dictionary like way.
        /// </summary>
        /// <Remarks>
        /// The indexer will throw an exception when you try to
        /// retrieve a cap handler for a cap that is not contained in
        /// CapsHandlers.
        /// </Remarks>
        public IRequestHandler this[string idx]
        {
            get
            {
                return m_capsHandlers[idx];
            }

            set
            {
                if (m_capsHandlers.ContainsKey(idx))
                {
                    m_httpListener.RemoveStreamHandler("POST", m_capsHandlers[idx].Path);
                    m_capsHandlers.Remove(idx);
                }

                if (null == value) return;

                m_capsHandlers[idx] = value;
                m_httpListener.AddStreamHandler(value);
            }
        }

        /// <summary>
        /// Return the list of cap names for which this CapsHandlers
        /// object contains cap handlers.
        /// </summary>
        public string[] Caps
        {
            get
            {
                string[] __keys = new string[m_capsHandlers.Keys.Count];
                m_capsHandlers.Keys.CopyTo(__keys, 0);
                return __keys;
            }
        }

        /// <summary>
        /// Return an LLSD-serializable Hashtable describing the
        /// capabilities and their handler details.
        /// </summary>
        public Hashtable CapsDetails
        {
            get
            {
                Hashtable caps = new Hashtable();
                string baseUrl = "http://" + m_httpListenerHostName + ":" + m_httpListenerPort.ToString();
                foreach (string capsName in m_capsHandlers.Keys)
                {
                    // skip SEED cap
                    if ("SEED" == capsName) continue;
                    caps[capsName] = baseUrl + m_capsHandlers[capsName].Path;
                }
                return caps;
            }
        }
    }
}