BufferedWebEventProvider.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Management / BufferedWebEventProvider.cs / 1 / BufferedWebEventProvider.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Management { 
    using System; 
    using System.Web;
    using System.Diagnostics; 
    using System.Web.Util;
    using System.Web.Configuration;
    using System.Configuration.Provider;
    using System.Collections; 
    using System.Collections.Specialized;
    using System.Configuration; 
    using System.Security; 
    using Debug=System.Web.Util.Debug;
    using System.Security.Permissions; 

    // Interface for buffered event provider
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    public abstract class BufferedWebEventProvider : WebEventProvider {
        bool    _buffer = true; 
        string  _bufferMode; 
        WebEventBuffer  _webEventBuffer;
 
        public override void Initialize(string name, NameValueCollection config)
        {
            // create buffer according to the buffer mode settings specified, like we do in sql/mail providers
            // wire up the delegate to the ProcessEventFlush method 
            Debug.Trace("BufferedWebEventProvider", "Initializing: name=" + name);
 
            ProviderUtil.GetAndRemoveBooleanAttribute(config, "buffer", name, ref _buffer); 

            if (_buffer) { 
                ProviderUtil.GetAndRemoveRequiredNonEmptyStringAttribute(config, "bufferMode", name, ref _bufferMode);
                _webEventBuffer = new WebEventBuffer(this, _bufferMode, new WebEventBufferFlushCallback(this.ProcessEventFlush));
            }
            else { 
                ProviderUtil.GetAndRemoveStringAttribute(config, "bufferMode", name, ref _bufferMode);
            } 
 
            base.Initialize(name, config);
 
            ProviderUtil.CheckUnrecognizedAttributes(config, name);
        }

        public bool UseBuffering { 
            get { return _buffer; }
        } 
 
        public string BufferMode {
            get { return _bufferMode; } 
        }

        public override void ProcessEvent(WebBaseEvent eventRaised)
        { 
            if (_buffer) {
                // register the event with the buffer instead of writing it out 
                Debug.Trace("BufferedWebEventProvider", "Saving event to buffer: event=" + eventRaised.GetType().Name); 
                _webEventBuffer.AddEvent(eventRaised);
            } 
            else {
                WebEventBufferFlushInfo flushInfo = new WebEventBufferFlushInfo(
                                new WebBaseEventCollection(eventRaised),
                                EventNotificationType.Unbuffered, 
                                0,
                                DateTime.MinValue, 
                                0, 
                                0);
 
                ProcessEventFlush(flushInfo);
            }
        }
 
        public abstract void ProcessEventFlush(WebEventBufferFlushInfo flushInfo);
 
        public override void Flush() { 
            if (_buffer) {
                _webEventBuffer.Flush(Int32.MaxValue, FlushCallReason.StaticFlush); 
            }
        }

        public override void Shutdown() { 
            if (_webEventBuffer != null) {
                _webEventBuffer.Shutdown(); 
            } 
        }
    } 

}

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