291 lines
13 KiB
C#
291 lines
13 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="events.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.Provider;
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using System.Collections;
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using System.Collections.Specialized;
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using System.Configuration;
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using System.Globalization;
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using System.Data;
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using System.Data.SqlClient;
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using System.Security.Permissions;
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using System.Security.Principal;
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using System.Text;
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using System.Threading;
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using System.Web.DataAccess;
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using System.Web.Util;
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////////////
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// Events
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////////////
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[PermissionSet(SecurityAction.InheritanceDemand, Unrestricted = true)]
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public class SqlWebEventProvider : BufferedWebEventProvider, IInternalWebEventProvider {
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const int SQL_MAX_NTEXT_SIZE = 1073741823;
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const int NO_LIMIT = -1;
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const string SP_LOG_EVENT = "dbo.aspnet_WebEvent_LogEvent";
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string _sqlConnectionString;
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int _maxEventDetailsLength = NO_LIMIT;
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int _commandTimeout = -1;
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int _SchemaVersionCheck;
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int _connectionCount = 0;
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DateTime _retryDate = DateTime.MinValue; // Won't try sending unless DateTime.UtcNow is > _retryDate
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protected internal SqlWebEventProvider() { }
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public override void Initialize(string name, NameValueCollection config) {
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Debug.Trace("SqlWebEventProvider", "Initializing: name=" + name);
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_SchemaVersionCheck = 0;
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string temp = null;
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ProviderUtil.GetAndRemoveStringAttribute(config, "connectionStringName", name, ref temp);
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ProviderUtil.GetAndRemoveStringAttribute(config, "connectionString", name, ref _sqlConnectionString);
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if (!String.IsNullOrEmpty(temp)) {
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if (!String.IsNullOrEmpty(_sqlConnectionString)) {
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throw new ConfigurationErrorsException(SR.GetString(SR.Only_one_connection_string_allowed));
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}
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_sqlConnectionString = SqlConnectionHelper.GetConnectionString(temp, true, true);
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if (_sqlConnectionString == null || _sqlConnectionString.Length < 1) {
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throw new ConfigurationErrorsException(SR.GetString(SR.Connection_string_not_found, temp));
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}
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}
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else {
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// If a connection string is specified explicitly, verify that its not using integrated security
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SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(_sqlConnectionString);
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if (builder.IntegratedSecurity) {
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throw new ConfigurationErrorsException(SR.GetString(SR.Cannot_use_integrated_security));
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}
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}
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if (String.IsNullOrEmpty(_sqlConnectionString)) {
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throw new ConfigurationErrorsException(SR.GetString(SR.Must_specify_connection_string_or_name, temp));
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}
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ProviderUtil.GetAndRemovePositiveOrInfiniteAttribute(config, "maxEventDetailsLength", name, ref _maxEventDetailsLength);
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if (_maxEventDetailsLength == ProviderUtil.Infinite) {
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_maxEventDetailsLength = NO_LIMIT;
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}
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else if (_maxEventDetailsLength > SQL_MAX_NTEXT_SIZE) {
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throw new ConfigurationErrorsException(SR.GetString(SR.Invalid_max_event_details_length, name, _maxEventDetailsLength.ToString(CultureInfo.CurrentCulture)));
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}
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ProviderUtil.GetAndRemovePositiveAttribute(config, "commandTimeout", name, ref _commandTimeout);
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base.Initialize(name, config);
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}
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private void CheckSchemaVersion(SqlConnection connection) {
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string[] features = { "Health Monitoring" };
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string version = "1";
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SecUtility.CheckSchemaVersion( this, connection, features, version, ref _SchemaVersionCheck );
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}
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public override void ProcessEventFlush(WebEventBufferFlushInfo flushInfo) {
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Debug.Trace("SqlWebEventProvider", "EventBufferFlush called: " +
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"NotificationType=" + flushInfo.NotificationType +
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", NotificationSequence=" + flushInfo.NotificationSequence +
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", Events.Count=" + flushInfo.Events.Count);
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WriteToSQL(flushInfo.Events, flushInfo.EventsDiscardedSinceLastNotification,
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flushInfo.LastNotificationUtc);
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}
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void PrepareParams(SqlCommand sqlCommand) {
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sqlCommand.Parameters.Add(new SqlParameter("@EventId", SqlDbType.Char, 32));
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sqlCommand.Parameters.Add(new SqlParameter("@EventTimeUtc", SqlDbType.DateTime));
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sqlCommand.Parameters.Add(new SqlParameter("@EventTime", SqlDbType.DateTime));
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sqlCommand.Parameters.Add(new SqlParameter("@EventType", SqlDbType.NVarChar, 256));
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sqlCommand.Parameters.Add(new SqlParameter("@EventSequence", SqlDbType.Decimal));
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sqlCommand.Parameters.Add(new SqlParameter("@EventOccurrence", SqlDbType.Decimal));
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sqlCommand.Parameters.Add(new SqlParameter("@EventCode", SqlDbType.Int));
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sqlCommand.Parameters.Add(new SqlParameter("@EventDetailCode", SqlDbType.Int));
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sqlCommand.Parameters.Add(new SqlParameter("@Message", SqlDbType.NVarChar, 1024));
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sqlCommand.Parameters.Add(new SqlParameter("@ApplicationPath", SqlDbType.NVarChar, 256));
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sqlCommand.Parameters.Add(new SqlParameter("@ApplicationVirtualPath", SqlDbType.NVarChar, 256));
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sqlCommand.Parameters.Add(new SqlParameter("@MachineName", SqlDbType.NVarChar, 256));
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sqlCommand.Parameters.Add(new SqlParameter("@RequestUrl", SqlDbType.NVarChar, 1024));
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sqlCommand.Parameters.Add(new SqlParameter("@ExceptionType", SqlDbType.NVarChar, 256));
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sqlCommand.Parameters.Add(new SqlParameter("@Details", SqlDbType.NText));
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}
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void FillParams(SqlCommand sqlCommand, WebBaseEvent eventRaised) {
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Exception exception = null;
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WebRequestInformation reqInfo = null;
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string details = null;
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WebApplicationInformation appInfo = WebBaseEvent.ApplicationInformation;
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int n = 0;
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sqlCommand.Parameters[n++].Value = eventRaised.EventID.ToString("N", CultureInfo.InstalledUICulture); // @EventId
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sqlCommand.Parameters[n++].Value = eventRaised.EventTimeUtc; // @EventTimeUtc
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sqlCommand.Parameters[n++].Value = eventRaised.EventTime; // @EventTime
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sqlCommand.Parameters[n++].Value = eventRaised.GetType().ToString(); // @EventType
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sqlCommand.Parameters[n++].Value = eventRaised.EventSequence; // @EventSequence
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sqlCommand.Parameters[n++].Value = eventRaised.EventOccurrence; // @EventOccurrence
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sqlCommand.Parameters[n++].Value = eventRaised.EventCode; // @EventCode
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sqlCommand.Parameters[n++].Value = eventRaised.EventDetailCode; // @EventDetailCode
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sqlCommand.Parameters[n++].Value = eventRaised.Message; // @Message
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sqlCommand.Parameters[n++].Value = appInfo.ApplicationPath; // @ApplicationPath
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sqlCommand.Parameters[n++].Value = appInfo.ApplicationVirtualPath; // @ApplicationVirtualPath
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sqlCommand.Parameters[n++].Value = appInfo.MachineName; // @MachineName
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//
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// @RequestUrl
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if (eventRaised is WebRequestEvent) {
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reqInfo = ((WebRequestEvent)eventRaised).RequestInformation;
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}
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else if (eventRaised is WebRequestErrorEvent) {
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reqInfo = ((WebRequestErrorEvent)eventRaised).RequestInformation;
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}
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else if (eventRaised is WebErrorEvent) {
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reqInfo = ((WebErrorEvent)eventRaised).RequestInformation;
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}
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else if (eventRaised is WebAuditEvent) {
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reqInfo = ((WebAuditEvent)eventRaised).RequestInformation;
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}
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sqlCommand.Parameters[n++].Value = (reqInfo != null) ? reqInfo.RequestUrl : Convert.DBNull;
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// @ExceptionType
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if (eventRaised is WebBaseErrorEvent) {
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exception = ((WebBaseErrorEvent)eventRaised).ErrorException;
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}
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sqlCommand.Parameters[n++].Value = (exception != null) ? exception.GetType().ToString() : Convert.DBNull;
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// @Details
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details = eventRaised.ToString();
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if (_maxEventDetailsLength != NO_LIMIT &&
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details.Length > _maxEventDetailsLength) {
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details = details.Substring(0, _maxEventDetailsLength);
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}
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sqlCommand.Parameters[n++].Value = details;
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}
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[PermissionSet(SecurityAction.InheritanceDemand, Unrestricted = true)]
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[SqlClientPermission(SecurityAction.Assert, Unrestricted = true)]
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[PermissionSet(SecurityAction.Assert, Unrestricted = true)]
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void WriteToSQL(WebBaseEventCollection events, int eventsDiscardedByBuffer, DateTime lastNotificationUtc) {
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// We don't want to send any more events until we've waited until the _retryDate (which defaults to minValue)
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if (_retryDate > DateTime.UtcNow) {
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return;
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}
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try {
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SqlConnectionHolder sqlConnHolder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true);
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SqlCommand sqlCommand = new SqlCommand(SP_LOG_EVENT);
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CheckSchemaVersion(sqlConnHolder.Connection);
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sqlCommand.CommandType = CommandType.StoredProcedure;
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sqlCommand.Connection = sqlConnHolder.Connection;
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if (_commandTimeout > -1) {
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sqlCommand.CommandTimeout = _commandTimeout;
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}
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PrepareParams(sqlCommand);
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try {
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sqlConnHolder.Open(null, true);
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Interlocked.Increment(ref _connectionCount);
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if (eventsDiscardedByBuffer != 0) {
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WebBaseEvent infoEvent = new WebBaseEvent(
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SR.GetString(SR.Sql_webevent_provider_events_dropped,
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eventsDiscardedByBuffer.ToString(CultureInfo.InstalledUICulture),
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lastNotificationUtc.ToString("r", CultureInfo.InstalledUICulture)),
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null,
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WebEventCodes.WebEventProviderInformation,
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WebEventCodes.SqlProviderEventsDropped);
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FillParams(sqlCommand, infoEvent);
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sqlCommand.ExecuteNonQuery();
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}
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foreach (WebBaseEvent eventRaised in events) {
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FillParams(sqlCommand, eventRaised);
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sqlCommand.ExecuteNonQuery();
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}
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}
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#if DBG
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catch (Exception e) {
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Debug.Trace("SqlWebEventProvider", "ExecuteNonQuery failed: " + e);
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throw;
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}
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#endif
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finally {
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sqlConnHolder.Close();
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Interlocked.Decrement(ref _connectionCount);
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}
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#if (!DBG)
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try {
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#endif
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EventProcessingComplete(events);
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#if (!DBG)
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}
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catch {
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// Ignore all errors.
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}
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#endif
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}
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catch {
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// For any failure, we will wait at least 30 seconds or _commandTimeout before trying again
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double timeout = 30;
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if (_commandTimeout > -1) {
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timeout = (double)_commandTimeout;
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}
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_retryDate = DateTime.UtcNow.AddSeconds(timeout);
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throw;
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}
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}
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public override void ProcessEvent(WebBaseEvent eventRaised)
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{
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if (UseBuffering) {
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base.ProcessEvent(eventRaised);
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}
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else {
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Debug.Trace("SqlWebEventProvider", "Writing event to SQL: event=" + eventRaised.GetType().Name);
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WriteToSQL(new WebBaseEventCollection(eventRaised), 0, new DateTime(0));
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}
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}
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protected virtual void EventProcessingComplete(WebBaseEventCollection raisedEvents) {
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}
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public override void Shutdown() {
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try {
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Flush();
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}
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finally {
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base.Shutdown();
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}
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// VSWhidbey 531556: Need to wait until all connections are gone before returning here
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// Sleep for 2x the command timeout in 1 sec intervals then give up, default timeout is 30 sec
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if (_connectionCount > 0) {
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int sleepAttempts = _commandTimeout*2;
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if (sleepAttempts <= 0) {
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sleepAttempts = 60;
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}
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// Check every second
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while (_connectionCount > 0 && sleepAttempts > 0) {
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--sleepAttempts;
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Thread.Sleep(1000);
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}
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}
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}
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}
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}
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