EndpointPerformanceCounters.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Diagnostics / EndpointPerformanceCounters.cs / 1 / EndpointPerformanceCounters.cs
                        
                        
                            //------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Diagnostics 
{
    using System.Collections.Generic; 
    using System.ServiceModel.Channels; 
    using System.ComponentModel;
    using System.Diagnostics; 
    using System.IO;
    using System.ServiceModel.Diagnostics;
    using System.Globalization;
    using System.Runtime.InteropServices; 

    internal class EndpointPerformanceCounters : PerformanceCountersBase 
    { 
        string instanceName;
 
        PerformanceCounter[] counters = null;

        enum PerfCounters : int
        { 
            Calls = 0,
            CallsPerSecond, 
            CallsOutstanding, 
            CallsFailed,
            CallsFailedPerSecond, 
            CallsFaulted,
            CallsFaultedPerSecond,
            CallDuration,
            CallDurationBase, 
            SecurityValidationAuthenticationFailures,
            SecurityValidationAuthenticationFailuresPerSecond, 
            CallsNotAuthorized, 
            CallsNotAuthorizedPerSecond,
            RMSessionsFaulted, 
            RMSessionsFaultedPerSecond,
            RMMessagesDropped,
            RMMessagesDroppedPerSecond,
            TxFlowed, 
            TxFlowedPerSecond,
            TotalCounters = TxFlowedPerSecond + 1 
        } 

        string[] perfCounterNames = 
        {
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECalls,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallsPerSecond,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallsOutstanding, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallsFailed,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallsFailedPerSecond, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallsFaulted, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallsFaultedPerSecond,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallDuration, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ECallDurationBase,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ESecurityValidationAuthenticationFailures,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ESecurityValidationAuthenticationFailuresPerSecond,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ESecurityCallsNotAuthorized, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ESecurityCallsNotAuthorizedPerSecond,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ERMSessionsFaulted, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ERMSessionsFaultedPerSecond, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ERMMessagesDropped,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ERMMessagesDroppedPerSecond, 
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ETxFlowed,
            PerformanceCounterStrings.SERVICEMODELENDPOINT.ETxFlowedPerSecond,
        };
 

        const int maxCounterLength = 64; 
        const int hashLength = 2; 
        [Flags]
        enum truncOptions : uint 
        {
            NoBits = 0,
            service15 = 0x01,
            contract16 = 0x02, 
            uri31 = 0x04
        } 
 
        internal EndpointPerformanceCounters(string service, string contract, string uri)
        { 
            this.instanceName = EndpointPerformanceCounters.CreateFriendlyInstanceName(service, contract, uri);

            this.counters = new PerformanceCounter[(int)PerfCounters.TotalCounters];
            for (int i = 0; i < (int)PerfCounters.TotalCounters; i++) 
            {
                PerformanceCounter counter = PerformanceCounters.GetEndpointPerformanceCounter(this.perfCounterNames[i], this.instanceName); 
                if (counter != null) 
                {
                    try 
                    {
                        counter.RawValue = 0;
                        this.counters[i] = counter;
                    } 
#pragma warning suppress 56500 // covered by FxCOP
                    catch (Exception e) 
                    { 
                        if (ExceptionUtility.IsFatal(e))
                            throw; 
                        if (DiagnosticUtility.ShouldTraceError)
                            TraceUtility.TraceEvent(TraceEventType.Error,
                                TraceCode.PerformanceCounterFailedToLoad,
                                null, e); 
                        break;
                    } 
                } 
                else
                { 
                    break;
                }
            }
        } 

 
        internal static string CreateFriendlyInstanceName(string service, string contract, string uri) 
        {
            // instance name is: serviceName.interfaceName.operationName@uri 
            int length = service.Length + contract.Length + uri.Length + 2;

            if (length > maxCounterLength)
            { 
                int count = 0;
 
                truncOptions tasks = EndpointPerformanceCounters.GetCompressionTasks( 
                    length, service.Length, contract.Length, uri.Length);
 
                //if necessary, compress service name to 13 chars with a 2 char hash code
                if ((tasks & truncOptions.service15) > 0)
                {
                    count = 15; 
                    service = GetHashedString(service, count - hashLength, service.Length - count + hashLength, true);
                } 
 
                //if necessary, compress contract name to 14 chars with a 2 char hash code
                if ((tasks & truncOptions.contract16) > 0) 
                {
                    count = 16;
                    contract = GetHashedString(contract, count - hashLength, contract.Length - count + hashLength, true);
                } 

                //if necessary,  compress uri to 29 chars with a 2 char hash code 
                if ((tasks & truncOptions.uri31) > 0) 
                {
                    count = 31; 
                    uri = GetHashedString(uri, 0, uri.Length - count + hashLength, false);
                }
            }
 
            // replace '/' with '|' because perfmon fails when '/' is in perfcounter instance name
            return service + "." + contract + "@" + uri.Replace('/', '|'); 
        } 

        private static truncOptions GetCompressionTasks(int totalLen, int serviceLen, int contractLen, int uriLen) 
        {
            truncOptions bitmask = 0;

            if (totalLen > maxCounterLength) 
            {
                int workingLen = totalLen; 
 
                //note: order of if statements important (see spec)!
                if (workingLen > maxCounterLength && serviceLen > 15) 
                {
                    bitmask |= truncOptions.service15; //compress service name to 16 chars
                    workingLen -= serviceLen - 15;
                } 
                if (workingLen > maxCounterLength && contractLen > 16)
                { 
                    bitmask |= truncOptions.contract16; //compress contract name to 8 chars 
                    workingLen -= contractLen - 16;
                } 
                if (workingLen > maxCounterLength && uriLen > 31)
                {
                    bitmask |= truncOptions.uri31; //compress uri to 31 chars
                } 
            }
 
            return bitmask; 
        }
 
        internal override PerformanceCounter[] Counters
        {
            get
            { 
                return this.counters;
            } 
            set 
            {
                this.counters = value; 
            }

        }
 
        internal override string InstanceName
        { 
            get 
            {
                return this.instanceName; 
            }
        }

        internal override string[] CounterNames 
        {
            get 
            { 
                return this.perfCounterNames;
            } 
        }

        internal override int PerfCounterStart
        { 
            get { return (int)PerfCounters.Calls; }
        } 
 
        internal override int PerfCounterEnd
        { 
            get { return (int)PerfCounters.TotalCounters; }
        }

 
        internal void MethodCalled()
        { 
            Increment((int)PerfCounters.Calls); 
            Increment((int)PerfCounters.CallsPerSecond);
            Increment((int)PerfCounters.CallsOutstanding); 
        }

        internal void MethodReturnedSuccess()
        { 
            Decrement((int)PerfCounters.CallsOutstanding);
        } 
 

        internal void MethodReturnedError() 
        {
            Increment((int)PerfCounters.CallsFailed);
            Increment((int)PerfCounters.CallsFailedPerSecond);
            Decrement((int)PerfCounters.CallsOutstanding); 
        }
 
        internal void MethodReturnedFault() 
        {
            Increment((int)PerfCounters.CallsFaulted); 
            Increment((int)PerfCounters.CallsFaultedPerSecond);
            Decrement((int)PerfCounters.CallsOutstanding);
        }
 

        internal void SaveCallDuration(long time) 
        { 
            IncrementBy((int)PerfCounters.CallDuration, time);
            Increment((int)PerfCounters.CallDurationBase); 
        }

        internal void AuthenticationFailed()
        { 
            Increment((int)PerfCounters.SecurityValidationAuthenticationFailures);
            Increment((int)PerfCounters.SecurityValidationAuthenticationFailuresPerSecond); 
        } 

        internal void AuthorizationFailed() 
        {
            Increment((int)PerfCounters.CallsNotAuthorized);
            Increment((int)PerfCounters.CallsNotAuthorizedPerSecond);
        } 

        internal void SessionFaulted() 
        { 
            Increment((int)PerfCounters.RMSessionsFaulted);
            Increment((int)PerfCounters.RMSessionsFaultedPerSecond); 
        }

        internal void MessageDropped()
        { 
            Increment((int)PerfCounters.RMMessagesDropped);
            Increment((int)PerfCounters.RMMessagesDroppedPerSecond); 
        } 

        internal void TxFlowed() 
        {
            Increment((int)PerfCounters.TxFlowed);
            Increment((int)PerfCounters.TxFlowedPerSecond);
        } 

        internal bool Initialized 
        { 
            get { return this.counters != null; }
        } 
    }
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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