Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Management/SimpleMailWebEventProvider.cs

@@ -0,0 +1,268 @@
+//------------------------------------------------------------------------------
+// <copyright file="SimpleMailWebEventProvider.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+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);
+            }
+        }
+        
+    }
+}
+