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223 lines
7.0 KiB
223 lines
7.0 KiB
#if MYSQL_6_10
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// Copyright ?2009, 2018, Oracle and/or its affiliates. All rights reserved.
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//
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// MySQL Connector/NET is licensed under the terms of the GPLv2
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// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
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// MySQL Connectors. There are special exceptions to the terms and
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// conditions of the GPLv2 as it is applied to this software, see the
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// FLOSS License Exception
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// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published
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// by the Free Software Foundation; version 2 of the License.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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using System;
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using System.Diagnostics;
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using System.Linq;
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using System.Reflection;
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namespace Externals.MySql.Data.MySqlClient
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{
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/// <summary>
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/// Traces information about the client execution.
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/// </summary>
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internal class MySqlTrace
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{
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private static TraceSource source = new TraceSource("mysql");
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static MySqlTrace()
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{
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foreach (TraceListener listener in source.Listeners.Cast<TraceListener>().Where(listener => listener.GetType().ToString().Contains("MySql.EMTrace.EMTraceListener")))
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{
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QueryAnalysisEnabled = true;
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break;
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}
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}
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/// <summary>
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/// Gets the list of trace listeners.
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/// </summary>
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public static TraceListenerCollection Listeners { get; } = source.Listeners;
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/// <summary>
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/// Gets or sets the switch to control tracing and debugging.
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/// </summary>
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public static SourceSwitch Switch
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{
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get { return source.Switch; }
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set { source.Switch = value; }
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}
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/// <summary>
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/// Gets or sets a flag indicating if query analysis is enabled.
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/// </summary>
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public static bool QueryAnalysisEnabled { get; set; }
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/// <summary>
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/// Enables query analysis.
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/// </summary>
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/// <param name="host">The host on which to enable query analysis.</param>
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/// <param name="postInterval">The interval of time for logging trace information.</param>
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public static void EnableQueryAnalyzer(string host, int postInterval)
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{
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if (QueryAnalysisEnabled) return;
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// create a EMTraceListener and add it to our source
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TraceListener l = (TraceListener)Activator.CreateInstance(Type.GetType("MySql.EMTrace.EMTraceListener"), host, postInterval);
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if (l == null)
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throw new MySqlException(Resources.UnableToEnableQueryAnalysis);
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source.Listeners.Add(l);
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Switch.Level = SourceLevels.All;
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}
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/// <summary>
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/// Disables query analysis.
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/// </summary>
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public static void DisableQueryAnalyzer()
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{
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QueryAnalysisEnabled = false;
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foreach (TraceListener l in from TraceListener l in Source.Listeners where l.GetType().ToString().Contains("EMTraceListener") select l)
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{
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source.Listeners.Remove(l);
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break;
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}
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}
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internal static TraceSource Source
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{
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get
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{
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return source;
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}
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}
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internal static void LogInformation(int id, string msg)
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{
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Source.TraceEvent(TraceEventType.Information, id, msg, MySqlTraceEventType.NonQuery, -1);
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Trace.TraceInformation(msg);
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}
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internal static void LogWarning(int id, string msg)
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{
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Source.TraceEvent(TraceEventType.Warning, id, msg, MySqlTraceEventType.NonQuery, -1);
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Trace.TraceWarning(msg);
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}
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internal static void LogError(int id, string msg)
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{
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Source.TraceEvent(TraceEventType.Error, id, msg, MySqlTraceEventType.NonQuery, -1);
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Trace.TraceError(msg);
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}
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internal static void TraceEvent(TraceEventType eventType,
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MySqlTraceEventType mysqlEventType, string msgFormat, params object[] args)
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{
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Source.TraceEvent(eventType, (int)mysqlEventType, msgFormat, args);
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}
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}
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/// <summary>
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/// Specifies the types of warning flags.
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/// </summary>
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internal enum UsageAdvisorWarningFlags
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{
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/// <summary>
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/// No index exists.
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/// </summary>
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NoIndex = 1,
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/// <summary>
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/// Bad index exists.
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/// </summary>
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BadIndex,
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/// <summary>
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/// Rows have been excluded from the result.
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/// </summary>
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SkippedRows,
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/// <summary>
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/// Columns have been excluded from the result.
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/// </summary>
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SkippedColumns,
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/// <summary>
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/// Type conversions took place.
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/// </summary>
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FieldConversion
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}
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/// <summary>
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/// Specifies the event that triggered the trace.
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/// </summary>
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internal enum MySqlTraceEventType : int
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{
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/// <summary>
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/// A connection has been opened.
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/// </summary>
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ConnectionOpened = 1,
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/// <summary>
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/// A connection has been closed.
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/// </summary>
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ConnectionClosed,
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/// <summary>
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/// A query has been executed.
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/// </summary>
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QueryOpened,
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/// <summary>
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/// Data has been retrieved from the resultset.
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/// </summary>
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ResultOpened,
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/// <summary>
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/// Data retrieval has ended.
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/// </summary>
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ResultClosed,
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/// <summary>
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/// Query execution has ended.
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/// </summary>
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QueryClosed,
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/// <summary>
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/// The statement to be executed has been created.
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/// </summary>
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StatementPrepared,
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/// <summary>
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/// The statement has been executed.
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/// </summary>
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StatementExecuted,
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/// <summary>
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/// The statement is no longer required.
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/// </summary>
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StatementClosed,
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/// <summary>
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/// The query provided is of a nonquery type.
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/// </summary>
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NonQuery,
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/// <summary>
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/// Usage advisor warnings have been requested.
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/// </summary>
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UsageAdvisorWarning,
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/// <summary>
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/// Noncritical problem.
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/// </summary>
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Warning,
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/// <summary>
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/// An error has been raised during data retrieval.
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/// </summary>
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Error,
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/// <summary>
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/// The query has been normalized.
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/// </summary>
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QueryNormalized
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}
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}
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#endif
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