EventLogConfiguration.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Diagnostics / Eventing / Reader / EventLogConfiguration.cs / 1305376 / EventLogConfiguration.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class: EventLogConfiguration 
**
** Purpose: 
** This public class allows accessing static channel information and
** configures channel publishing and logging properties.  An instance
** of this class is obtained from EventLogManagement class.
** 
============================================================*/
 
using System.Collections.Generic; 
using System.Runtime.InteropServices;
using System.Security.Permissions; 
using Microsoft.Win32;

namespace System.Diagnostics.Eventing.Reader {
 
    /// 
    /// Log Type 
    ///  
    public enum EventLogType {
        Administrative = 0, 
        Operational,
        Analytical,
        Debug
    } 

    ///  
    /// Log Isolation 
    /// 
    public enum EventLogIsolation { 
        Application = 0,
        System,
        Custom
    } 

    ///  
    /// Log Mode 
    /// 
    public enum EventLogMode { 
        Circular = 0,
        AutoBackup,
        Retain
    } 

    ///  
    /// Provides access to static log information and configures 
    /// log publishing and log file properties.
    ///  
    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)]
    public class EventLogConfiguration : IDisposable {

        // 
        // access to the data member reference is safe, while
        // invoking methods on it is marked SecurityCritical as appropriate. 
        // 
        private EventLogHandle handle = EventLogHandle.Zero;
 
        private EventLogSession session = null;
        private string channelName;

        public EventLogConfiguration(string logName) : this(logName, null) { } 

        // marked as SecurityCritical because allocates SafeHandles. 
        // marked as Safe because performs Demand check. 
        [System.Security.SecurityCritical]
        public EventLogConfiguration(string logName, EventLogSession session) { 

            EventLogPermissionHolder.GetEventLogPermission().Demand();

            if (session == null) 
                session = EventLogSession.GlobalSession;
 
            this.session = session; 
            this.channelName = logName;
 
            handle = NativeWrapper.EvtOpenChannelConfig(this.session.Handle, this.channelName, 0);
        }

        public string LogName { 
            get {
                return channelName; 
            } 
        }
 
        public EventLogType LogType {
            get {
                return (EventLogType)((uint)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigType));
            } 
        }
 
        public EventLogIsolation LogIsolation { 
            get {
                return (EventLogIsolation)((uint)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigIsolation)); 
            }
        }

        public bool IsEnabled { 
            get {
                return (bool)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigEnabled); 
            } 
            set {
                NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigEnabled, (object)value); 
            }
        }

        public bool IsClassicLog { 
            get {
                return (bool)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigClassicEventlog); 
            } 
        }
 
        public string SecurityDescriptor {
            get {
                return (string)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigAccess);
            } 
            set {
                NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigAccess, (object)value); 
            } 
        }
 
        public string LogFilePath {
            get {
                return (string)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigLogFilePath);
            } 
            set {
                NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigLogFilePath, (object)value); 
            } 
        }
 
        public long MaximumSizeInBytes {
            get {
                return (long)((ulong)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigMaxSize));
            } 
            set {
                NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigMaxSize, (object)value); 
            } 
        }
 
        public EventLogMode LogMode {
            get {
                object nativeRetentionObject = NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigRetention);
                object nativeAutoBackupObject = NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigAutoBackup); 

                bool nativeRetention = nativeRetentionObject == null ? false : (bool)nativeRetentionObject; 
                bool nativeAutoBackup = nativeAutoBackupObject == null ? false : (bool)nativeAutoBackupObject; 

                if (nativeAutoBackup) 
                    return EventLogMode.AutoBackup;

                if (nativeRetention)
                    return EventLogMode.Retain; 

                return EventLogMode.Circular; 
            } 
            set {
 
                switch (value) {
                    case EventLogMode.Circular:
                        NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigAutoBackup, (object)false);
                        NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigRetention, (object)false); 
                        break;
                    case EventLogMode.AutoBackup: 
                        NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigAutoBackup, (object)true); 
                        NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigRetention, (object)true);
                        break; 
                    case EventLogMode.Retain:
                        NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigAutoBackup, (object)false);
                        NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelLoggingConfigRetention, (object)true);
                        break; 
                }
            } 
        } 

        public string OwningProviderName { 
            get {
                return (string)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelConfigOwningPublisher);
            }
        } 

        public IEnumerable ProviderNames { 
            get { 
                return (string[])NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublisherList);
            } 
        }

        public int? ProviderLevel {
            get { 
                return (int?)((uint?)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigLevel));
            } 
            set { 
                NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigLevel, (object)value);
            } 
        }

        public long? ProviderKeywords {
            get { 
                return (long?)((ulong?)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigKeywords));
            } 
            set { 
                NativeWrapper.EvtSetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigKeywords, (object)value);
            } 
        }

        public int? ProviderBufferSize {
            get { 
                return (int?)((uint?)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigBufferSize));
            } 
        } 

        public int? ProviderMinimumNumberOfBuffers { 
            get {
                return (int?)((uint?)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigMinBuffers));
            }
        } 

        public int? ProviderMaximumNumberOfBuffers { 
            get { 
                return (int?)((uint?)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigMaxBuffers));
            } 
        }

        public int? ProviderLatency {
            get { 
                return (int?)((uint?)NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigLatency));
            } 
        } 

        public Guid? ProviderControlGuid { 
            get {
                return (Guid?)(NativeWrapper.EvtGetChannelConfigProperty(this.handle, UnsafeNativeMethods.EvtChannelConfigPropertyId.EvtChannelPublishingConfigControlGuid));
            }
        } 

        public void SaveChanges() { 
 
            NativeWrapper.EvtSaveChannelConfig(this.handle, 0);
        } 

        public void Dispose() {
            Dispose(true);
            GC.SuppressFinalize(this); 
        }
 
 
        [System.Security.SecuritySafeCritical]
        protected virtual void Dispose(bool disposing) { 
            if (disposing) {
                EventLogPermissionHolder.GetEventLogPermission().Demand();
            }
            if ( handle != null && !handle.IsInvalid ) 
                handle.Dispose();
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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