269 lines
11 KiB
C#
269 lines
11 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="SimpleMailWebEventProvider.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.Management {
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using System.Configuration;
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using System.Configuration.Provider;
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using System.Collections.Specialized;
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using System.Web.Util;
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using System.Net.Mail;
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using System.Globalization;
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using System.Web.Configuration;
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using System.Text;
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using System.IO;
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using System.Runtime.Remoting.Messaging;
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using System.Security.Permissions;
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using System.Threading;
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public sealed class SimpleMailWebEventProvider : MailWebEventProvider, IInternalWebEventProvider {
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const int DefaultMaxEventLength = 8 * 1024;
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const int MessageIdDiscard = 100;
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const int MessageIdEventsToDrop = 101;
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static string s_header_warnings = SR.GetString(SR.MailWebEventProvider_Warnings);
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static string s_header_summary = SR.GetString(SR.MailWebEventProvider_Summary);
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static string s_header_app_info = SR.GetString(SR.MailWebEventProvider_Application_Info);
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static string s_header_events = SR.GetString(SR.MailWebEventProvider_Events);
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string _separator = "---------------\n";
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string _bodyHeader;
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string _bodyFooter;
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int _maxEventLength = DefaultMaxEventLength; // in no of chars
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int _nonBufferNotificationSequence = 0;
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internal SimpleMailWebEventProvider() { }
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public override void Initialize(string name, NameValueCollection config)
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{
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string temp = null;
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Debug.Trace("SimpleMailWebEventProvider", "Initializing: name=" + name);
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ProviderUtil.GetAndRemoveStringAttribute(config, "bodyHeader", name, ref _bodyHeader);
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if (_bodyHeader != null) {
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_bodyHeader += "\n";
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}
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ProviderUtil.GetAndRemoveStringAttribute(config, "bodyFooter", name, ref _bodyFooter);
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if (_bodyFooter != null) {
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_bodyFooter += "\n";
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}
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ProviderUtil.GetAndRemoveStringAttribute(config, "separator", name, ref temp);
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if (temp != null) {
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_separator = temp + "\n";
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}
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ProviderUtil.GetAndRemovePositiveOrInfiniteAttribute(config, "maxEventLength", name, ref _maxEventLength);
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base.Initialize(name, config);
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}
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void GenerateWarnings(StringBuilder sb, DateTime lastFlush, int discardedSinceLastFlush,
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int seq, int eventsToDrop) {
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if (!UseBuffering) {
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return;
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}
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bool headerAdded = false;
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bool hasWarnings = false;
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// This warning is issued only in the 1st message (vswhidbey 217578)
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if (discardedSinceLastFlush != 0 && seq == MessageSequenceBase) {
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sb.Append(s_header_warnings);
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sb.Append("\n");
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sb.Append(_separator);
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headerAdded = true;
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sb.Append(SR.GetString(SR.MailWebEventProvider_discard_warning,
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MessageIdDiscard.ToString(CultureInfo.InstalledUICulture),
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discardedSinceLastFlush.ToString(CultureInfo.InstalledUICulture),
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lastFlush.ToString("r", CultureInfo.InstalledUICulture)));
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sb.Append("\n\n");
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hasWarnings = true;
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}
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if (eventsToDrop > 0) {
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if (!headerAdded) {
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sb.Append(s_header_warnings);
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sb.Append("\n");
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sb.Append(_separator);
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headerAdded = true;
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}
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sb.Append(SR.GetString(SR.MailWebEventProvider_events_drop_warning,
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MessageIdEventsToDrop.ToString(CultureInfo.InstalledUICulture),
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eventsToDrop.ToString(CultureInfo.InstalledUICulture)));
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sb.Append("\n\n");
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hasWarnings = true;
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}
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if (hasWarnings) {
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sb.Append("\n");
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}
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}
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void GenerateApplicationInformation(StringBuilder sb) {
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sb.Append(s_header_app_info);
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sb.Append("\n");
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sb.Append(_separator);
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sb.Append(WebBaseEvent.ApplicationInformation.ToString());
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sb.Append("\n\n");
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}
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void GenerateSummary(StringBuilder sb, int firstEvent, int lastEvent, int eventsInNotif, int eventsInBuffer) {
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if (!UseBuffering) {
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return;
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}
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sb.Append(s_header_summary);
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sb.Append("\n");
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sb.Append(_separator);
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// The sequence numbers will be displayed as one-baesd.
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firstEvent++;
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lastEvent++;
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sb.Append(SR.GetString(SR.MailWebEventProvider_summary_body,
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firstEvent.ToString(CultureInfo.InstalledUICulture),
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lastEvent.ToString(CultureInfo.InstalledUICulture),
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eventsInNotif.ToString(CultureInfo.InstalledUICulture),
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eventsInBuffer.ToString(CultureInfo.InstalledUICulture)));
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sb.Append("\n\n");
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sb.Append("\n");
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}
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string GenerateBody(WebBaseEventCollection events,
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int begin,
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DateTime lastFlush,
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int discardedSinceLastFlush,
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int eventsInBuffer,
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int messageSequence,
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int eventsInNotification,
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int eventsLostDueToMessageLimit) {
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StringBuilder sb = new StringBuilder();
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int totalEvents = events.Count;
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if (_bodyHeader != null) {
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sb.Append(_bodyHeader);
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}
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// Warnings
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GenerateWarnings(sb, lastFlush, discardedSinceLastFlush, messageSequence, eventsLostDueToMessageLimit);
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// Event Summary
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GenerateSummary(sb, begin, begin + totalEvents - 1, eventsInNotification, eventsInBuffer);
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// Application Info
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Debug.Assert(events.Count > 0, "events.Count > 0");
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GenerateApplicationInformation(sb);
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// Please note that it's a text message, and thus we shouldn't need to HtmlEncode it.
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for (int i = 0; i < totalEvents; i++) {
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WebBaseEvent eventRaised = events[i];
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string details = eventRaised.ToString(false, true);
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if (_maxEventLength != ProviderUtil.Infinite &&
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details.Length > _maxEventLength) {
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details = details.Substring(0, _maxEventLength);
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}
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if (i == 0) {
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sb.Append(s_header_events);
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sb.Append("\n");
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sb.Append(_separator);
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}
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sb.Append(details);
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sb.Append("\n");
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sb.Append(_separator);
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}
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if (_bodyFooter != null) {
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sb.Append(_bodyFooter);
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}
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return sb.ToString();
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}
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internal override void SendMessage(WebBaseEvent eventRaised) {
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WebBaseEventCollection events = new WebBaseEventCollection(eventRaised);
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SendMessageInternal(
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events, // events
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Interlocked.Increment(ref _nonBufferNotificationSequence), // notificationSequence
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0, // begin
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DateTime.MinValue, // lastFlush
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0, // discardedSinceLastFlush
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0, // eventsInBuffer
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MessageSequenceBase,// messageSequence
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1, // messagesInNotification
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1, // eventsInNotification
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0); // eventsLostDueToMessageLimit
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}
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internal override void SendMessage(WebBaseEventCollection events,
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WebEventBufferFlushInfo flushInfo,
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int eventsInNotification,
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int eventsRemaining,
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int messagesInNotification,
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int eventsLostDueToMessageLimit,
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int messageSequence,
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int eventsSent,
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out bool fatalError) {
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SendMessageInternal(events,
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flushInfo.NotificationSequence,
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eventsSent,
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flushInfo.LastNotificationUtc,
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flushInfo.EventsDiscardedSinceLastNotification,
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flushInfo.EventsInBuffer,
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messageSequence,
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messagesInNotification,
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eventsInNotification,
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eventsLostDueToMessageLimit);
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fatalError = false;
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}
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void SendMessageInternal(WebBaseEventCollection events,
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int notificationSequence,
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int begin,
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DateTime lastFlush,
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int discardedSinceLastFlush,
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int eventsInBuffer,
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int messageSequence,
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int messagesInNotification,
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int eventsInNotification,
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int eventsLostDueToMessageLimit) {
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using (MailMessage msg = GetMessage()) {
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// Don't report eventsLostDueToMessageLimit unless it's the last message in this notification
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if (messageSequence != messagesInNotification) {
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eventsLostDueToMessageLimit = 0;
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}
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msg.Body = GenerateBody(events,
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begin,
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lastFlush,
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discardedSinceLastFlush,
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eventsInBuffer,
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messageSequence,
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eventsInNotification,
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eventsLostDueToMessageLimit);
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msg.Subject = GenerateSubject(notificationSequence, messageSequence, events, events.Count);
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SendMail(msg);
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}
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}
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}
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}
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