Downloads: Measuring and Monitoring WCF Web Service Performance

using System;
using System.Collections.Generic;
using JetBrains.Annotations;
using Kaleida.ServiceMonitor.Model.Runtime;
using Kaleida.ServiceMonitor.Model.Statistics;
using System.Linq;

namespace Kaleida.ServiceMonitor.Model
{
    public class OperationStatisticsMap
    {
        private readonly ProcessingStatistics combined = new ProcessingStatistics("Combined", "Combined operations");
        private readonly Dictionary<IOperation,ProcessingStatistics> map = new Dictionary<IOperation, ProcessingStatistics>();

        public ProcessingStatistics Combined
        {
            get { return combined; }
        }

        public IList<ProcessingStatistics> Operations
        {
            get { return map.Values.ToList().AsReadOnly(); }
        }

        public IList<ProcessingStatistics> AllValues
        {
            get
            {
                lock (this)
                {
                    var all = new List<ProcessingStatistics> {combined};
                    all.AddRange(map.Values);
                    return all.AsReadOnly();
                }
            }
        }

        public void Initialise(IList<IOperation> operations)
        {
            lock (this)
            {
                combined.Reset();
                map.Clear();
                foreach (var operation in operations)
                {
                    var position = operations.IndexOf(operation) + 1;
                    var name = "Operation " + position.ToString("0");
                    map.Add(operation, new ProcessingStatistics(name, operation.Description));
                }
            }
        }

        private void TryUpdateStatistics([NotNull] IOperation operation, Action<ProcessingStatistics> updateAction)
        {
            if (operation == null) throw new ArgumentNullException("operation");

            lock (this)
            {
                ProcessingStatistics stats;
                if (map.TryGetValue(operation, out stats))
                {
                    updateAction(stats);
                }
            }
        }

        public void ResetAll()
        {
            combined.Reset();

            lock (this)
            {
                foreach (var entry in map)
                {
                    entry.Value.Reset();
                }
            }
        }

        internal void Start()
        {
            lock (this)
            {
                foreach(var stats in AllValues)
                    stats.Start();
            }
        }

        internal void IncrementSuccessCount(IOperation operation, TimeSpan elapsed)
        {
            lock (this)
            {
                combined.IncrementSuccessCount(elapsed);
                TryUpdateStatistics(operation, i => i.IncrementSuccessCount(elapsed));
            }
        }

        internal void IncrementFailureCount(IOperation operation)
        {
            lock (this)
            {
                combined.IncrementFailureCount();
                TryUpdateStatistics(operation, i => i.IncrementFailureCount());
            }
        }
    }
}

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License

This article, along with any associated source code and files, is licensed under The GNU General Public License (GPLv3)

About the Author

Stuart Wheelwright

Architect BlackJet Software Ltd
United Kingdom

Stuart Wheelwright is the Principal Architect and Software Developer at BlackJet Software Ltd.

He has over 15 years commercial experience producing robust, maintainable, web-based solutions and bespoke server-side components for Microsoft platforms.

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Using ServiceMon to obtain performance statistics for web services

Type	Article
Licence	GPL3
First Posted	9 Oct 2012
Views	9,110
Downloads	354
Bookmarked	39 times

C#WindowsDevQAWCF
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