MSBuild: How to get the number of warnings?

Question

There is an MSBuild script that includes a number if Delphi and C # projects, unit tests, etc.

The problem is this: how to flag the assembly failed if warnings were raised (for testing purposes, and not for releases)? Using LogError instead of LogWarning in custom tasks seems not a good option, because the assembly should test as much as it (before a real error) should report as many warnings as possible (the assembly project is used in CruiseControl.NET).

Maybe the solution is to create my own registrar that will store the warning flag inside, but I can’t find if there is a way to read this flag at the end of the assembly?

PS There is no problem with assembly failure immediately after receiving a warning (the output of the Delphi compiler is handled by a custom task and / warnaserror can be used for C #), but the desired behavior is "build everything, collect all warnings, fail", do not report all warnings only about the first.

PPS As far as I really do not need the number of warnings, but only the flag of their presence, I decided to simplify the signaling mechanism and use the trivial Mutex instead of shared memory. Code below:

using System;
using Microsoft.Build.Framework;
using Microsoft.Build.Utilities;
using System.Threading;

namespace Intrahealth.Build.WarningLogger
{
    public sealed class WarningLoggerCheck : Task
    {
        public override bool Execute()
        {
            Log.LogMessage("WarningLoggerCheck:" + mutexName + "...");
            result = false;
            Mutex m = null;
            try
            {
                m = Mutex.OpenExisting(mutexName);
            }
            catch (WaitHandleCannotBeOpenedException)
            {
                result = true;
            }
            catch (Exception)
            {
            }

            if (result)
                Log.LogMessage("WarningLoggerCheck PASSED");
            else
                Log.LogError("Build log contains warnings. Build is FAILED");

            return result;
        }

        private bool result = true;
        [Output]
        public bool Result
        {
            get { return result; }
        }

        private string mutexName = "WarningLoggerMutex";
        public string MutexName
        {
            get { return mutexName; }
            set { mutexName = value ?? "WarningLoggerMutex"; }
        }
    }

    public class WarningLogger : Logger
    {
        internal static int warningsCount = 0;
        private string mutexName = String.Empty;
        private Mutex mutex = null;

        public override void Initialize(IEventSource eventSource)
        {
            eventSource.WarningRaised += new BuildWarningEventHandler(eventSource_WarningRaised);
        }

        private void SetMutex()
        {
            if (mutexName == String.Empty)
            {
                mutexName = "WarningLoggerMutex";
                if (this.Parameters != null && this.Parameters != String.Empty)
                {
                    mutexName = this.Parameters;
                }
            }

            mutex = new Mutex(false, mutexName);
        }

        void eventSource_WarningRaised(object sender, BuildWarningEventArgs e)
        {
            if (e.Message != null && e.Message.Contains("MSB3146"))
                return;
            if (e.Code != null && e.Code.Equals("MSB3146"))
                return;

            if (warningsCount == 0)
                SetMutex();
            warningsCount++;
        }
    }
}

Answer 1

AFAIK MSBuild script. :

• ,
• , [Output] WarningCount
• -

3. , IPC - Inter Process Comunication. , . .

SharedMemory

http://weblogs.asp.net/rosherove/archive/2003/05/01/6295.aspx

, . ( , -). - , ; -).

SampleLogger

, .

namespace SampleLogger
{
    using System;
    using Microsoft.Build.Utilities;
    using Microsoft.Build.Framework;
    using DM.SharedMemory;

    public class MySimpleLogger : Logger
    {
        private Segment s;
        private int warningCount;

        public override void Initialize(IEventSource eventSource)
        {
            eventSource.WarningRaised += new BuildWarningEventHandler(eventSource_WarningRaised);

            this.s = new Segment("MSBuildMetadata", SharedMemoryCreationFlag.Create, 65535);
            this.s.SetData(this.warningCount.ToString());
        }

        void eventSource_WarningRaised(object sender, BuildWarningEventArgs e)
        {
            this.warningCount++;
            this.s.SetData(this.warningCount.ToString());
        }

        public override void Shutdown()
        {
            this.s.Dispose();
            base.Shutdown();
        }
    }
}

SampleTasks

, , MSbuild. , , SampleLogger.

namespace SampleTasks
{
    using System;
    using Microsoft.Build.Utilities;
    using Microsoft.Build.Framework;
    using DM.SharedMemory;

    public class BuildMetadata : Task
    {
        public int warningCount;

        [Output]
        public int WarningCount
        {
            get
            {
                Segment s = new Segment("MSBuildMetadata", SharedMemoryCreationFlag.Attach, 0);
                int warningCount = Int32.Parse(s.GetData() as string);
                return warningCount;
            }
        }

        public override bool Execute()
        {
            return true;
        }
    }
}

.

<?xml version="1.0" encoding="UTF-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Main">
    <UsingTask TaskName="BuildMetadata" AssemblyFile="F:\temp\SampleLogger\bin\debug\SampleTasks.dll" />

    <Target Name="Main">
        <Warning Text="Sample warning #1" />
        <Warning Text="Sample warning #2" />

        <BuildMetadata>
            <Output
                TaskParameter="WarningCount"
                PropertyName="WarningCount" />
        </BuildMetadata>

        <Error Text="A total of $(WarningCount) warning(s) were raised." Condition="$(WarningCount) > 0" />
    </Target>
</Project>

:

c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\MSBuild test.xml /logger:SampleLogger.dll

:

Microsoft (R) Build Engine Version 2.0.50727.3053
[Microsoft .NET Framework, Version 2.0.50727.3053]
Copyright (C) Microsoft Corporation 2005. All rights reserved.

Build started 30-09-2008 13:04:39.
__________________________________________________
Project "F:\temp\SampleLogger\bin\debug\test.xml" (default targets):

Target Main:
    F:\temp\SampleLogger\bin\debug\test.xml : warning : Sample warning #1
    F:\temp\SampleLogger\bin\debug\test.xml : warning : Sample warning #2
    F:\temp\SampleLogger\bin\debug\test.xml(15,3): error : A total of 2 warning(s) were raised.
Done building target "Main" in project "test.xml" -- FAILED.

Done building project "test.xml" -- FAILED.

Build FAILED.
F:\temp\SampleLogger\bin\debug\test.xml : warning : Sample warning #1
F:\temp\SampleLogger\bin\debug\test.xml : warning : Sample warning #2
F:\temp\SampleLogger\bin\debug\test.xml(15,3): error : A total of 2 warning(s) were raised.
    2 Warning(s)
    1 Error(s)

Time Elapsed 00:00:00.01

Answer 2

# (csc.exe) /warnaserror, . .csproj. , Delphi .

Answer 3

msbuild.exe %~nx1 /t:Rebuild /p:Configuration=Release >> %MrB-BUILDLOG%
findstr /r /c:"[1-9][0-9]* Error(s)" >> %MrB-BUILDLOG%
if not errorlevel 1 (
   echo ERROR: sending notification email for build errors in '%~nx1'. >> %MrB-BUILDLOG%
) else (
   findstr /r /c:"[1-9][0-9]* Warning(s)" >> %MrB-BUILDLOG%
   if not errorlevel 1 (
       echo ERROR: sending notification email for build warnings in '%~nx1'. >>

% MRB-BUILDLOG%) else (echo Successful build '% ~ nx1'. →% MrB-BUILDLOG%))