SimpleMailWebEventProvider.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Management / SimpleMailWebEventProvider.cs / 1305376 / SimpleMailWebEventProvider.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Management { 
    using System.Configuration; 
    using System.Configuration.Provider;
    using System.Collections.Specialized; 
    using System.Web.Util;
    using System.Net.Mail;
    using System.Globalization;
    using System.Web.Configuration; 
    using System.Text;
    using System.IO; 
    using System.Runtime.Remoting.Messaging; 
    using System.Security.Permissions;
    using System.Threading; 

    public sealed class SimpleMailWebEventProvider : MailWebEventProvider, IInternalWebEventProvider {
        const int   DefaultMaxEventLength = 8 * 1024;
 
        const int   MessageIdDiscard = 100;
        const int   MessageIdEventsToDrop = 101; 
 
        static string  s_header_warnings = SR.GetString(SR.MailWebEventProvider_Warnings);
        static string  s_header_summary = SR.GetString(SR.MailWebEventProvider_Summary); 
        static string  s_header_app_info = SR.GetString(SR.MailWebEventProvider_Application_Info);
        static string  s_header_events = SR.GetString(SR.MailWebEventProvider_Events);

        string  _separator = "---------------\n"; 
        string  _bodyHeader;
        string  _bodyFooter; 
 
        int     _maxEventLength = DefaultMaxEventLength;            // in no of chars
        int     _nonBufferNotificationSequence = 0; 

        internal SimpleMailWebEventProvider() { }

        public override void Initialize(string name, NameValueCollection config) 
        {
            string  temp = null; 
 
            Debug.Trace("SimpleMailWebEventProvider", "Initializing: name=" + name);
 
            ProviderUtil.GetAndRemoveStringAttribute(config, "bodyHeader", name, ref _bodyHeader);
            if (_bodyHeader != null) {
                _bodyHeader += "\n";
            } 

            ProviderUtil.GetAndRemoveStringAttribute(config, "bodyFooter", name, ref _bodyFooter); 
            if (_bodyFooter != null) { 
                _bodyFooter += "\n";
            } 

            ProviderUtil.GetAndRemoveStringAttribute(config, "separator", name, ref temp);
            if (temp != null) {
                _separator = temp + "\n"; 
            }
 
            ProviderUtil.GetAndRemovePositiveOrInfiniteAttribute(config, "maxEventLength", name, ref _maxEventLength); 

            base.Initialize(name, config); 
        }

        void GenerateWarnings(StringBuilder sb, DateTime lastFlush, int discardedSinceLastFlush,
                                int seq, int eventsToDrop) { 
            if (!UseBuffering) {
                return; 
            } 

            bool    headerAdded = false; 
            bool    hasWarnings = false;

            // This warning is issued only in the 1st message (vswhidbey 217578)
            if (discardedSinceLastFlush != 0 && seq == MessageSequenceBase) { 
                sb.Append(s_header_warnings);
                sb.Append("\n"); 
                sb.Append(_separator); 
                headerAdded = true;
 
                sb.Append(SR.GetString(SR.MailWebEventProvider_discard_warning,
                            MessageIdDiscard.ToString(CultureInfo.InstalledUICulture),
                            discardedSinceLastFlush.ToString(CultureInfo.InstalledUICulture),
                            lastFlush.ToString("r", CultureInfo.InstalledUICulture))); 
                sb.Append("\n\n");
                hasWarnings = true; 
            } 

            if (eventsToDrop > 0) { 
                if (!headerAdded) {
                    sb.Append(s_header_warnings);
                    sb.Append("\n");
                    sb.Append(_separator); 
                    headerAdded = true;
                } 
 
                sb.Append(SR.GetString(SR.MailWebEventProvider_events_drop_warning,
                    MessageIdEventsToDrop.ToString(CultureInfo.InstalledUICulture), 
                    eventsToDrop.ToString(CultureInfo.InstalledUICulture)));
                sb.Append("\n\n");
                hasWarnings = true;
            } 

            if (hasWarnings) { 
                sb.Append("\n"); 
            }
        } 

        void GenerateApplicationInformation(StringBuilder sb) {
            sb.Append(s_header_app_info);
            sb.Append("\n"); 
            sb.Append(_separator);
            sb.Append(WebBaseEvent.ApplicationInformation.ToString()); 
            sb.Append("\n\n"); 
        }
 
        void GenerateSummary(StringBuilder sb, int firstEvent, int lastEvent, int eventsInNotif, int eventsInBuffer) {
            if (!UseBuffering) {
                return;
            } 

            sb.Append(s_header_summary); 
            sb.Append("\n"); 
            sb.Append(_separator);
 
            // The sequence numbers will be displayed as one-baesd.
            firstEvent++;
            lastEvent++;
 
            sb.Append(SR.GetString(SR.MailWebEventProvider_summary_body,
                            firstEvent.ToString(CultureInfo.InstalledUICulture), 
                            lastEvent.ToString(CultureInfo.InstalledUICulture), 
                            eventsInNotif.ToString(CultureInfo.InstalledUICulture),
                            eventsInBuffer.ToString(CultureInfo.InstalledUICulture))); 
            sb.Append("\n\n");
            sb.Append("\n");
        }
 
        string GenerateBody(WebBaseEventCollection events,
                            int begin, 
                            DateTime lastFlush, 
                            int discardedSinceLastFlush,
                            int eventsInBuffer, 
                            int messageSequence,
                            int eventsInNotification,
                            int eventsLostDueToMessageLimit) {
            StringBuilder   sb = new StringBuilder(); 
            int             totalEvents = events.Count;
 
            if (_bodyHeader != null) { 
                sb.Append(_bodyHeader);
            } 

            // Warnings
            GenerateWarnings(sb, lastFlush, discardedSinceLastFlush, messageSequence, eventsLostDueToMessageLimit);
 
            // Event Summary
            GenerateSummary(sb, begin, begin + totalEvents - 1, eventsInNotification, eventsInBuffer); 
 
            // Application Info
            Debug.Assert(events.Count > 0, "events.Count > 0"); 
            GenerateApplicationInformation(sb);

            // Please note that it's a text message, and thus we shouldn't need to HtmlEncode it.
            for (int i = 0; i < totalEvents; i++) { 
                WebBaseEvent    eventRaised = events[i];
                string          details = eventRaised.ToString(false, true); 
 
                if (_maxEventLength != ProviderUtil.Infinite &&
                    details.Length > _maxEventLength) { 
                    details = details.Substring(0, _maxEventLength);
                }

                if (i == 0) { 
                    sb.Append(s_header_events);
                    sb.Append("\n"); 
                    sb.Append(_separator); 
                }
 
                sb.Append(details);
                sb.Append("\n");
                sb.Append(_separator);
            } 

            if (_bodyFooter != null) { 
                sb.Append(_bodyFooter); 
            }
 
            return sb.ToString();
        }

        internal override void SendMessage(WebBaseEvent eventRaised) { 
            WebBaseEventCollection events = new WebBaseEventCollection(eventRaised);
 
            SendMessageInternal( 
                events,             // events
                Interlocked.Increment(ref _nonBufferNotificationSequence), // notificationSequence 
                0,                  // begin
                DateTime.MinValue,  // lastFlush
                0,                  // discardedSinceLastFlush
                0,                  // eventsInBuffer 
                MessageSequenceBase,// messageSequence
                1,                  // messagesInNotification 
                1,                  // eventsInNotification 
                0);                 // eventsLostDueToMessageLimit
        } 

        internal override void SendMessage(WebBaseEventCollection events,
                            WebEventBufferFlushInfo flushInfo,
                            int eventsInNotification, 
                            int eventsRemaining,
                            int messagesInNotification, 
                            int eventsLostDueToMessageLimit, 
                            int messageSequence,
                            int eventsSent, 
                            out bool fatalError) {

            SendMessageInternal(events,
                flushInfo.NotificationSequence, 
                eventsSent,
                flushInfo.LastNotificationUtc, 
                flushInfo.EventsDiscardedSinceLastNotification, 
                flushInfo.EventsInBuffer,
                messageSequence, 
                messagesInNotification,
                eventsInNotification,
                eventsLostDueToMessageLimit);
 
            fatalError = false;
        } 
 

        void SendMessageInternal(WebBaseEventCollection events, 
                            int notificationSequence,
                            int begin,
                            DateTime lastFlush,
                            int discardedSinceLastFlush, 
                            int eventsInBuffer,
                            int messageSequence, 
                            int messagesInNotification, 
                            int eventsInNotification,
                            int eventsLostDueToMessageLimit) { 
            using (MailMessage msg = GetMessage()) {
                // Don't report eventsLostDueToMessageLimit unless it's the last message in this notification
                if (messageSequence != messagesInNotification) {
                    eventsLostDueToMessageLimit = 0; 
                }
 
                msg.Body = GenerateBody(events, 
                                begin,
                                lastFlush, 
                                discardedSinceLastFlush,
                                eventsInBuffer,
                                messageSequence,
                                eventsInNotification, 
                                eventsLostDueToMessageLimit);
 
                msg.Subject = GenerateSubject(notificationSequence, messageSequence, events, events.Count); 

                SendMail(msg); 
            }
        }

    } 
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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SimpleMailWebEventProvider.cs source code in C# .NET

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