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dotnet core build environment with SonarQube MSBuild Scanner integration

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dotnet-sonar

This is a container used to build dotnet projects and provide SonarQube analysis using SonarQube MSBuild Scanner.

It also allows you to run Docker in Docker using a docker.sock mount.

This latest image was built with the following components:

  • dotnetcore-sdk 9.0.100
  • dotnetcore-runtime 9.0.0 (required by Sonar-Scanner)
  • SonarQube MSBuild Scanner 9.0.2.104486
  • Docker binaries 24.0.x (for running Docker in Docker using the docker.sock mount)
  • OpenJDK Java Runtime 17 (required by Sonar-Scanner and some Sonar-Scanner plugins)
  • NodeJS 20 (required by Sonar-Scanner web analysis plugins)

Supported tags and respective Dockerfile links

Tags are written using the following pattern: dotnet-sonar:<year>.<month>.<revision>

⚠️ (THIS VERSION HAS REACHED END OF LIFE)

⚠️ (THIS VERSION HAS REACHED END OF LIFE)

⚠️ (THIS VERSION HAS REACHED END OF LIFE)

Compiling dotnet code with SonarQube Analysis

Full documentation: https://docs.sonarqube.org/display/SCAN/Analyzing+with+SonarQube+Scanner+for+MSBuild

Inside container

Using Docker

Inside container:

$ dotnet /sonar-scanner/SonarScanner.MSBuild.dll begin /k:sonarProjectKey
$ dotnet build
$ dotnet /sonar-scanner/SonarScanner.MSBuild.dll end

Configure external SonarQube Server:

$ dotnet /sonar-scanner/SonarScanner.MSBuild.dll begin /k:sonarProjectKey /d:sonar.host.url="<SonarQubeServerUrl:Port>" /d:sonar.login="<SonarQubeServerToken>"
$ dotnet build
$ dotnet /sonar-scanner/SonarScanner.MSBuild.dll end  /d:sonar.login="<SonarQubeServerToken>"

Outside container:

Simple Usage:

$ docker run -it --rm -v <my-project-source-path>:/source ghcr.io/nosinovacao/dotnet-sonar:latest bash -c "cd source \
    && dotnet /sonar-scanner/SonarScanner.MSBuild.dll begin /k:sonarProjectKey /name:sonarProjectName /version:buildVersion \
    && dotnet restore \
    && dotnet build -c Release \
    && dotnet /sonar-scanner/SonarScanner.MSBuild.dll end"

Advance Usage:

$ docker run -it --rm \
    -v <my-project-source-path>:/source \
    -v <my-nugetconfig-source-path>:/nuget \
    dotnet-sonar:latest \
    bash -c \
        "cd source \
        && dotnet /sonar-scanner/SonarScanner.MSBuild.dll begin \
        /k:<ProjectName> /name:<my-project-name> /version:<my-project-version> \
        /d:sonar.host.url="<my-sonar-server-url>" \
        /d:sonar.login="<my-sonar-server-user>" \
        /d:sonar.password="<my-sonar-server-pass>" \
        /d:sonar.cs.opencover.reportsPaths='tests/**/coverage.opencover.xml' \
        && dotnet restore --configfile /nuget/NuGet.Config \
        && dotnet build -c Release \
        && dotnet publish -c Release -r linux-x64 -o deployment \
        && dotnet test --no-build -c Release --filter "Category=Unit" --logger trx --results-directory testResults /p:CollectCoverage=true /    p:CoverletOutputFormat=\"opencover\" \
        && dotnet /sonar-scanner/SonarScanner.MSBuild.dll end \
        /d:sonar.login="<my-sonar-server-user>" \
        /d:sonar.password="<my-sonar-server-pass>""

The script above does the following:

  • Mounts your project folder to the container's /source folder
  • Mounts your nuget config to the container's /nuget folder (optional if no private nuget server is used)
  • Begins the sonarscanner with the sonarqube server credentials
  • Performs a dotnet restore with the nuget config in /nuget folder
  • Executes the build command
  • Publishes the build to the deployment folder
  • Runs the tests and stores the test results in testResults folder. Change this command to your unit tests needs
  • Ends the sonarscanner and publishes the sonarqube analysis results to the sonarqube server

Using Jenkins pipeline

The following pipeline code will:

  • Start a sonar scanning session
  • Build dotnet projects
  • Run tests with coverage analysis (using coverlet) and publish them using the Jenkins XUnit publisher
  • End a sonar scanning session
  • [OPTIONAL] In the end, it waits for sonar's quality gate status and sets the build outcome

Note that in order for coverage analysis to work, you need to add the coverlet NuGet package to the unit test project.

def envVariables = [
    'HOME=/tmp/home',
    'DOTNET_CLI_TELEMETRY_OPTOUT=1'
]

node('somenode-with-docker')
{
    withSonarQubeEnv('my-jenkins-configured-sonar-environment')
    {
        docker.image('ghcr.io/nosinovacao/dotnet-sonar:latest').inside()
        {
            withEnv(envVariables)
            {
                stage('build')
                {
                    checkout scm
                    sh "dotnet /sonar-scanner/SonarScanner.MSBuild.dll begin /k:someKey /name:someName /version:someVersion /d:sonar.cs.opencover.reportsPaths='tests/**/coverage.opencover.xml'"
                    sh "dotnet build -c Release /property:Version=someVersion"
                    sh "rm -drf ${env.WORKSPACE}/testResults"
                    sh (returnStatus: true, script: "find tests/**/* -name \'*.csproj\' -print0 | xargs -L1 -0 -P 8 dotnet test --no-build -c Release --logger trx --results-directory ${env.WORKSPACE}/testResults /p:CollectCoverage=true /p:CoverletOutputFormat=opencover")
                    step([$class: 'XUnitPublisher', testTimeMargin: '3000', thresholdMode: 1, thresholds: [[$class: 'FailedThreshold', unstableThreshold: '0']
                            , [$class: 'SkippedThreshold']], tools: [[$class: 'MSTestJunitHudsonTestType', deleteOutputFiles: true, failIfNotNew: false
                            , pattern: 'testResults/**/*.trx', skipNoTestFiles: true, stopProcessingIfError: true]]])
                    sh "dotnet /sonar-scanner/SonarScanner.MSBuild.dll end"
                }
            }
        }
    }
}

timeout(time: 1, unit: 'HOURS')
{
    def qualityGate = waitForQualityGate()
    if (qualityGate.status == 'ERROR')
    {
        currentBuild.result = 'UNSTABLE'
    }
}

If you want to use Docker in Docker:

Please note that if you want to use Docker inside Docker (DinD) you need to perform additional actions when mounting the docker image in the pipeline.

The following actions will expose your host to several security vulnerabilities and therefore this should only be used when you absolutely must to:

docker.image('ghcr.io/nosinovacao/dotnet-sonar:latest').inside("--group-add docker -v /var/run/docker.sock:/var/run/docker.sock")
{
    // Some stuff
    docker.image.('hello-world:latest').inside()
    {
        sh "echo 'hello from docker inside docker'"
    }
}

The above code will:

  • Add current jenkins user to the Docker group
  • Mount the docker socket into the container so that you can control the Docker instance on the host machine

Code Coverage

The above examples already implement the code-coverage analysis, provided you add the coverlet NuGet package to your unit test project.

If you want to know more, check: https://dev.to/deinsoftware/net-core-unit-test-and-code-coverage-with-visual-studio-code-37bp.

Also, coverlet documentation here: https://github.com/tonerdo/coverlet/.

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dotnet core build environment with SonarQube MSBuild Scanner integration

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