Code Quality

The Rise of GitOps: Automating Deployment and Improving Reliability

March 14, 2023 Amazon, Azure, Best Practices, Cloud Computing, Cloud Native, Code Quality, Computing, Development Process, DevOps, DevSecOps, Dynamic Analysis, Google Cloud, Kubernetes, Managed Services, Platforms, Resources, SecOps, Static Analysis, Static Code Analysis(SCA) No comments

GitOps is a relatively new approach to software delivery that has been gaining popularity in recent years. It is a set of practices for managing and deploying infrastructure and applications using Git as the single source of truth. In this blog post, we will explore the concept of GitOps, its key benefits, and some examples of how it is being used in the industry.

What is GitOps?

GitOps is a modern approach to software delivery that is based on the principles of Git and DevOps. It is a way of managing infrastructure and application deployments using Git as the single source of truth. The idea behind GitOps is to use Git to store the desired state of the infrastructure and applications, and then use automated tools to ensure that the actual state of the system matches the desired state.

The key benefit of GitOps is that it provides a simple, repeatable, and auditable way to manage infrastructure and application deployments. By using Git as the source of truth, teams can easily manage changes to the system and roll back to previous versions if needed. GitOps also provides a way to enforce compliance and security policies, as all changes to the system are tracked in Git.

How does GitOps work?

GitOps works by using Git as the single source of truth for managing infrastructure and application deployments. The desired state of the system is defined in a Git repository, and then automated tools are used to ensure that the actual state of the system matches the desired state.

The Git repository contains all of the configuration files and scripts needed to define the system. This includes everything from Kubernetes manifests to database schema changes. The Git repository also contains a set of policies and rules that define how changes to the system should be made.

Automated tools are then used to monitor the Git repository and ensure that the actual state of the system matches the desired state. This is done by continuously polling the Git repository and comparing the actual state of the system to the desired state. If there are any differences, the automated tools will take the necessary actions to bring the system back into compliance with the desired state.

With GitOps, infrastructure and application deployments are automated and triggered by changes to the Git repository. This approach enables teams to implement Continuous Delivery for their infrastructure and applications, allowing them to deploy changes faster and more frequently while maintaining stability.

GitOps relies on a few key principles to make infrastructure and application management more streamlined and efficient. These include:

  • Declarative Configuration: GitOps uses declarative configuration to define infrastructure and application states. This means that rather than writing scripts to configure infrastructure or applications, teams define the desired end state and let GitOps tools handle the rest.
  • Automation: With GitOps, deployments are fully automated and triggered by changes to the Git repository. This ensures that infrastructure and application states are always up to date and consistent across environments.
  • Version Control: GitOps relies on version control to ensure that all changes to infrastructure and application configurations are tracked and documented. This allows teams to easily roll back to previous versions of the configuration in case of issues or errors.
  • Observability: GitOps tools provide visibility into the state of infrastructure and applications, making it easy to identify issues and troubleshoot problems.

Key benefits of GitOps

GitOps offers several key benefits for managing infrastructure and application deployments:

  • Consistency: By using Git as the source of truth, teams can ensure that all changes to the system are tracked and auditable. This helps to enforce consistency across the system and reduces the risk of configuration drift.
  • Collaboration: GitOps encourages collaboration across teams by providing a single source of truth for the system. This helps to reduce silos and improve communication between teams.
  • Speed: GitOps enables teams to deploy changes to the system quickly and easily. By using automated tools to manage the deployment process, teams can reduce the time and effort required to make changes to the system.
  • Scalability: GitOps is highly scalable and can be used to manage large, complex systems. By using Git as the source of truth, teams can easily manage changes to the system and roll back to previous versions if needed.

Comparison between GitOps and Traditional Infrastructure Management:

  1. Deployment Speed: Traditional infrastructure management requires a lot of manual effort, which can result in delays and mistakes. With GitOps, the entire deployment process is automated, which significantly speeds up the deployment process.
  2. Consistency: In traditional infrastructure management, it’s easy to make mistakes or miss steps in the deployment process, leading to inconsistent deployments. GitOps, on the other hand, ensures that deployments are consistent and adhere to the same process, thanks to the version control system.
  3. Scalability: Traditional infrastructure management can be challenging to scale due to the manual effort required. GitOps enables scaling by automating the entire deployment process, ensuring that all deployments adhere to the same process and standard.
  4. Collaboration: In traditional infrastructure management, collaboration can be a challenge, especially when multiple teams are involved. With GitOps, collaboration is made easier since everything is version-controlled, making it easy to track changes and collaborate across teams.
  5. Security: Traditional infrastructure management can be prone to security vulnerabilities since it’s often difficult to track changes and ensure that all systems are up-to-date. GitOps improves security by ensuring that everything is version-controlled, making it easier to track changes and identify security issues.

Examples of GitOps in Action

Here are some examples of GitOps in action:

  1. Kubernetes: GitOps is widely used in Kubernetes environments, where a Git repository is used to store the configuration files for Kubernetes resources. Whenever a change is made to the repository, it triggers a deployment of the updated resources to the Kubernetes cluster.
  2. CloudFormation: In Amazon Web Services (AWS), CloudFormation is used to manage infrastructure as code. GitOps can be used to manage CloudFormation templates stored in a Git repository, enabling developers to manage infrastructure using GitOps principles.
  3. Terraform: Terraform is an open-source infrastructure as code tool that is widely used in the cloud-native ecosystem. GitOps can be used to manage Terraform code, allowing teams to manage infrastructure in a more repeatable and auditable manner.
  4. Helm: Helm is a package manager for Kubernetes, and it is commonly used to manage complex applications in Kubernetes. GitOps can be used to manage Helm charts, enabling teams to deploy and manage applications using GitOps principles.
  5. Serverless: GitOps can also be used to manage serverless environments, where a Git repository is used to store configuration files for serverless functions. Whenever a change is made to the repository, it triggers a deployment of the updated functions to the serverless environment.

Real-world Examples of GitOps in Action

GitOps has become increasingly popular in various industries, from finance to healthcare to e-commerce. Here are some examples of companies that have adopted GitOps and how they are using it:

Weaveworks

Weaveworks, a provider of Kubernetes tools and services, uses GitOps to manage its own infrastructure and help customers manage theirs. By using GitOps, Weaveworks has been able to implement Continuous Delivery for its infrastructure, allowing the company to make changes quickly and easily while maintaining stability.

Weaveworks also uses GitOps to manage its customers’ infrastructure, providing a more efficient and reliable way to deploy and manage Kubernetes clusters. This approach has helped Weaveworks to reduce the time and effort required to manage infrastructure for its customers, allowing them to focus on developing and delivering their applications.

Zalando

Zalando, a leading European e-commerce company, has implemented GitOps as part of its platform engineering approach. With GitOps, Zalando has been able to standardize its infrastructure and application management processes, making it easier to deploy changes and maintain consistency across environments.

Zalando uses GitOps to manage its Kubernetes clusters and other infrastructure components, allowing teams to quickly and easily deploy changes without disrupting other parts of the system. By using GitOps, Zalando has been able to reduce the risk of downtime and ensure that its systems are always up to date and secure.

Autodesk

Autodesk, a software company that specializes in design software for architects, engineers, and construction professionals, has implemented GitOps as part of its infrastructure management strategy. By using GitOps, Autodesk has been able to automate its infrastructure deployments and reduce the time and effort required to manage its systems.

Autodesk uses GitOps to manage its Kubernetes clusters, ensuring that all deployments are consistent and up to date. The company has implemented Argo CD, a popular GitOps tool, to manage its infrastructure. With Argo CD, Autodesk has been able to automate its deployments and ensure that all changes to its infrastructure are tracked and audited.

By implementing GitOps, Autodesk has seen significant benefits in terms of infrastructure management. The company has been able to reduce the time and effort required to manage its systems, while also improving the consistency and reliability of its deployments. This has allowed Autodesk to focus more on its core business of developing and improving its design software.

Booking.com

Booking.com, one of the world’s largest online travel companies, has also embraced GitOps as part of its infrastructure management strategy. The company uses GitOps to manage its Kubernetes clusters, ensuring that all deployments are automated and consistent across its infrastructure.

Booking.com uses Flux, a popular GitOps tool, to manage its infrastructure. With Flux, the company has been able to automate its deployments, reducing the risk of human error and ensuring that all changes to its infrastructure are tracked and audited.

By using GitOps, Booking.com has seen significant benefits in terms of infrastructure management. The company has been able to reduce the time and effort required to manage its systems, while also improving the reliability and consistency of its deployments. This has allowed Booking.com to focus more on developing new features and improving its online travel platform.

Here are some more industry examples of companies utilizing GitOps:

  1. SoundCloud – SoundCloud, the popular music streaming platform, has implemented GitOps to manage their infrastructure as code. They use a combination of Kubernetes and GitLab to automate their deployments and make it easy for their developers to spin up new environments.
  2. SAP – SAP, the software giant, has also embraced GitOps. They use the approach to manage their cloud infrastructure, ensuring that all changes are tracked and can be easily reverted if necessary. They have also developed their own GitOps tool called “Kyma” which provides a platform for developers to easily create cloud-native applications.
  3. Alibaba Cloud – Alibaba Cloud, the cloud computing arm of the Alibaba Group, has implemented GitOps as part of their DevOps practices. They use a combination of GitLab and Kubernetes to manage their cloud infrastructure, allowing them to rapidly deploy new services and ensure that they are always up-to-date.
  4. Ticketmaster – Ticketmaster, the global ticket sales and distribution company, uses GitOps to manage their cloud infrastructure across multiple regions. They have implemented a GitOps workflow using Kubernetes and Jenkins, which allows them to easily deploy new services and ensure that their infrastructure is always up-to-date and secure.

These examples show that GitOps is not just a theoretical concept, but a real-world approach that is being embraced by some of the world’s largest companies. By using GitOps, organizations can streamline their development processes, reduce errors and downtime, and improve their overall security posture.

Conclusion

GitOps has revolutionized the way software engineering is done. By using Git as the single source of truth for infrastructure management, organizations can automate their deployments and reduce the time and effort required to manage their systems. With GitOps, developers can focus more on developing new features and improving their software, while operations teams can focus on ensuring that the infrastructure is reliable, secure, and up-to-date.

In this blog post, we have explored what GitOps is and how it works, as well as some key examples of GitOps in action. We have seen how GitOps is being used by companies like Autodesk and Booking.com to automate their infrastructure deployments and reduce the time and effort required to manage their systems.

If you are interested in learning more about GitOps, there are many resources available online, including tutorials, blog posts, and videos. By embracing GitOps, organizations can streamline their infrastructure management and focus more on delivering value to their customers.”

Key Takeaways

  • GitOps is a methodology that applies the principles of Git to infrastructure management and application delivery.
  • GitOps enables developers to focus on delivering applications, while operations teams focus on managing infrastructure.
  • GitOps promotes automation, observability, repeatability, and increased security in the software development lifecycle.
  • GitOps encourages collaboration between teams, reducing silos and increasing communication.
  • GitOps provides benefits such as increased reliability, faster time to market, reduced downtime, and improved scalability.

DecSecOps: Integrating Security into DevOps – Part 9 – The Final – Application Security and Immutable Infrastructure for DevSecOps

March 8, 2023 Azure, Azure DevOps, Best Practices, Code Quality, Development Process, DevOps, DevSecOps, Dynamic Analysis, Emerging Technologies, Microsoft, Resources, SecOps, Secure communications, Security, Software/System Design, Static Analysis, Static Code Analysis(SCA) No comments

This is a final series to conclude and summarize the key topics covered in previous 8 blogs:

DevSecOps is an approach to software development that emphasizes integrating security into every stage of the software development lifecycle. Application security and immutable infrastructure are two key practices that can help organizations achieve this goal.

Application Security

Application security involves the process of identifying, analyzing, and mitigating security vulnerabilities in software applications. By implementing application security practices, organizations can reduce the risk of security breaches, ensure compliance with regulatory requirements, and protect customer data.

One key aspect of application security is threat modeling. Threat modeling involves identifying potential threats and vulnerabilities in the application design, such as SQL injection or cross-site scripting. By identifying these threats early in the development process, organizations can take steps to mitigate them and reduce the risk of security breaches.

Another key aspect of application security is security testing. Security testing involves testing the application for potential security vulnerabilities, such as buffer overflow or input validation issues. Organizations can use a variety of tools and techniques for security testing, including penetration testing, fuzz testing, and code review.

Once potential security vulnerabilities are identified, organizations can take steps to remediate them. This may involve using automated scripts or manual processes to fix the code, or in some cases, rewriting the application code entirely. By remediating security vulnerabilities, organizations can reduce the risk of security breaches and protect their customers.

Immutable Infrastructure

Immutable infrastructure is a practice that involves treating infrastructure as an immutable entity that cannot be modified once it is deployed. This practice ensures that the infrastructure remains consistent and predictable, reducing the risk of configuration errors and enhancing the reliability and security of the infrastructure.

Immutable infrastructure can be achieved through a variety of techniques, including containerization, virtualization, and infrastructure as code. These techniques enable organizations to create and manage infrastructure as code, making it easier to automate and scale infrastructure deployments.

One key benefit of immutable infrastructure is enhanced security. By treating infrastructure as immutable, organizations can ensure that the infrastructure is free from vulnerabilities and that changes are traceable and auditable. This reduces the risk of security breaches and makes it easier to comply with regulatory requirements.

Another key benefit of immutable infrastructure is scalability. Immutable infrastructure enables organizations to scale their infrastructure more efficiently, since infrastructure deployments can be automated and managed as code. This reduces the time and effort required to deploy and manage infrastructure, freeing up resources for other tasks.

In conclusion, application security and immutable infrastructure are two key practices that can help organizations achieve the goals of DevSecOps. By implementing application security practices, organizations can reduce the risk of security breaches, ensure compliance with regulatory requirements, and protect customer data. By implementing immutable infrastructure practices, organizations can enhance the reliability and security of their infrastructure, reduce the risk of configuration errors, and scale their infrastructure more efficiently.

Now, let’s summarize the key points of all the topics covered in earlier blogs in a final blog:

DevSecOps: A Summary of Key Topics

DevSecOps is an approach to software development that emphasizes integrating security into every stage of the software development lifecycle. Some key topics related to DevSecOps include:

  1. Continuous Integration and Continuous Deployment: CI/CD is a practice that involves automating the build, test, and deployment process to improve the speed and reliability of software development.
  2. Configuration Management: Configuration management is a practice that involves managing infrastructure and application configurations to ensure consistency and reduce the risk of configuration errors.
  3. Continuous Compliance: Continuous compliance involves automating the process of ensuring compliance with regulatory requirements, such as HIPAA or GDPR.
  4. Threat Intelligence: Threat intelligence involves collecting, analyzing, and disseminating information about potential security threats to an organization.
  5. Application Security: Application security involves the process of identifying, analyzing, and mitigating security vulnerabilities in software applications.
  6. Immutable Infrastructure: Immutable infrastructure involves treating infrastructure as an immutable entity that cannot be modified once it is deployed. This practice ensures that the infrastructure remains consistent and predictable, reducing the risk of configuration errors and enhancing the reliability and security of the infrastructure.
  7. Implementing these practices can help organizations achieve the goals of DevSecOps, including reducing the risk of security breaches, improving compliance with regulatory requirements, and enhancing the reliability and scalability of their software development process.

Here’s a summary of the benefits of each of these practices:

In conclusion,

DevSecOps is a holistic approach to software development that prioritizes security at every stage of the software development lifecycle. By integrating security into the software development process, organizations can minimize security risks and vulnerabilities, improve compliance with regulatory requirements, and enhance the overall reliability and scalability of their software.

To achieve these goals, DevSecOps emphasizes the implementation of various practices, including continuous integration and continuous deployment, configuration management, continuous compliance, threat intelligence, application security, and immutable infrastructure. Each of these practices plays a critical role in enhancing the security and reliability of the software development process and reducing the risk of security breaches and vulnerabilities.

Continuous integration and continuous deployment enable faster and more reliable software development, while configuration management ensures consistency and reduces the risk of configuration errors. Continuous compliance ensures that software development complies with regulatory requirements, while threat intelligence enhances the organization’s awareness of potential security threats. Application security minimizes security risks and vulnerabilities, while immutable infrastructure enhances security and reliability, making it easier to scale up or down as necessary.

In summary, DevSecOps is a critical approach to software development that prioritizes security throughout the software development lifecycle. By implementing best practices and embracing a culture of security, organizations can minimize security risks and vulnerabilities, improve compliance with regulatory requirements, and enhance the reliability and scalability of their software development process.

DevSecOps: Integrating Security into DevOps – Part 3

March 2, 2023 Azure DevOps, Best Practices, Code Quality, Development Process, DevOps, DevSecOps, Dynamic Analysis, SecOps, Secure communications, Security, Software Engineering, Software/System Design, Static Analysis, Static Code Analysis(SCA) No comments

Continuing from my previous blog, let’s explore some more advanced topics related to DevSecOps implementation.

Shift-Left Testing

One of the key concepts in DevSecOps is shift-left testing. This means shifting security testing as far left in the software development process as possible. This helps identify security issues early in the development process, which is much cheaper and easier to fix than if they are discovered later in the process. Shift-left testing includes the following types of testing:

  1. Static Application Security Testing (SAST): SAST analyzes the source code for security vulnerabilities. It helps identify issues such as buffer overflows, SQL injection, and cross-site scripting (XSS).
  2. Dynamic Application Security Testing (DAST): DAST tests the software in a running state to identify vulnerabilities in real-time. It helps identify issues such as injection attacks, cross-site scripting, and authentication flaws.
  3. Interactive Application Security Testing (IAST): IAST combines the best aspects of SAST and DAST by analyzing the code while the software is running. This helps identify security issues more accurately and efficiently.
  4. Software Composition Analysis (SCA): SCA analyzes the third-party software and libraries used in the application to identify any security vulnerabilities.

Continuous Security Monitoring

DevSecOps is not a one-time process but an ongoing process. Continuous security monitoring is essential to ensure that the software remains secure throughout its lifecycle. Continuous security monitoring includes the following activities:

  1. Real-time threat detection: It involves analyzing the system logs and network traffic to identify any suspicious behavior that could indicate a security breach.
  2. Vulnerability scanning: It involves running automated scans to identify security vulnerabilities in the software and infrastructure.
  3. Compliance monitoring: It involves monitoring the software and infrastructure to ensure that they comply with security policies and regulatory requirements.

Container Security

Containers are becoming increasingly popular for software development and deployment. However, they can also introduce new security challenges. Container security includes the following activities:

  1. Image scanning: It involves scanning the container images to identify any security vulnerabilities.
  2. Container runtime security: It involves monitoring the container environment to ensure that it remains secure.
  3. Orchestration security: It involves securing the container orchestration system, such as Kubernetes or Docker Swarm, to ensure that it remains secure.

Conclusion

DevSecOps is a critical practice that enables organizations to build and deploy secure software continuously. By implementing shift-left testing, continuous security monitoring, and container security, organizations can improve their security posture significantly. However, DevSecOps is not a one-time process but an ongoing process that requires continuous improvement and refinement. By following these best practices, organizations can build and deploy software that is secure, compliant, and efficient.

NDepend–VSTS/Azure DevOps Integration–Part 01

September 30, 2018 .NET, .NET Core, .NET Framework, Azure DevOps, Best Practices, Code Quality, Dynamic Analysis, Emerging Technologies, Microsoft, Static Analysis, Static Code Analysis(SCA), Tools No comments

In my previous article I wrote an introductory about NDepend and how it will be useful for Agile Team to ensure code quality.

In that article we found how we can use NDepend in a developer machine. Now with this article we will familiarize ourselves in using NDepend in your build automation pipeline in your VSTS/Azure DevOps Build Agent.

There are two types of integration possible for NDepend:

  1. Directly using NDepend Package Extension from VSTS Marketplace
  2. Manual Integration using NDepend Command Line Tool. (This would provide you more control over licensing by setting up the license in your own OnPrem VSTS Build Agent.

For the interest of this article I will cover the use of VSTS Package Extension and using NDepend Build Task in VSTS Build Pipeline.

Installation of NDepend Extension for VSTS/Azure DevOps :

1.) Got to Azure DevOps Market Place:  https://marketplace.visualstudio.com/items?itemName=ndepend.ndependextension

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2.) Click on Get to Install this extension in to your AzureDevOps account and follow the steps. For the demo purpose I am starting with 30 day free trial, otherwise you can go ahead and buy the full license.

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3.) Now when you get back to Azure DevOps project, you can see the NDepend side menu enabled, this is where you would see the report summary of your project.

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Integration NDepend into Azure DevOps Pipeline :

1.) Select “NDepend Task” and add in to Pipeline

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Note:

  • You can choose to stop the build when at least one quality gate fails.
  • You also need to specify the NDepend project file customized for your project, otherwise NDepend will use their default project file configuration.  Having your own NDepend project file will provide you more control over the policies for the scan.

Queue a new Build and wait for Build to complete. Now you can see the BuildArtifacts includes all NDepend report file.

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Now you go back to NDepend menu from Left side menu item in Summary Tab. This will provide you detailed view of Technical Debt in your project.

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In the next article I will cover the manual integration steps.

Introduction to NDepend : Static Code Analysis Tool

June 16, 2018 .NET, .NET Core, .NET Framework, ASP.NET, Best Practices, C#.NET, Code Quality, Dynamic Analysis, Emerging Technologies, Help Articles, Microsoft, Static Analysis, Static Code Analysis(SCA), Tech-Trends, Tools, Tools, Visual Studio 2017, VisualStudio, Windows No comments , , , , , ,

As a developer, you always have to take the pain of getting adapted to the best practices and coding guidelines to be followed as per the organizational or industrial standards.  Easy way to ensure your coding style follows certain standard is to manually analyze your code or use a static code analyzer like FxCop, StyleCop etc. Earlier days I have been a fan of FxCop as it was free and it provides me all necessary general guidelines in terms  of improving my solution.

In this modern world of programming everything needs to be automated, as it saves time and money in terms of automating repetitive tasks and improves efficiency. This is where static code analysers coming effective.

What is Static Code Analysis?

Static program analysis is the analysis of computer software that is performed without actually executing programs, on some version of the program source code, and in the other cases, some form of the object code or intermediate compiled code .

Sophistication of static program analysis increases is based on how deep they analyze in terms of behavior of individual statements and declarations, to analyzing the entire source code.

PS: Analysis performed on executing programs is known as dynamic analysis.

In this article I will give you an overview of one such premier static code analysis tool that can be used for your daily development routine plus use it for CI integration for DevOps efficiency.

NDepend:

NDepend is a static analysis tool for .NET, specifically for managed code:  NDepdend supports a large number of code metrics, allowing to visualize dependencies using directed graphs and dependency matrix. It also performs code base snapshots comparisons, and validation of architectural and quality rules.

The important capabilities of NDepend are:

  • Dependency Visualization through dependency matrix and graphs.
  • Analyse and generate software quality metrics – as per the documentation it supports 82 quality metrices.
  • Declarative rule support through LINQ queries, and it is called CQLinq and comes with a large number of predefined CQLinq rules.
  • Integration support for Cruise Control.Net, SonarCube, am City. Code rules can be configured to be checked automatically in Visual Studio or during continuous integration(CI).

License: NDepend is a commercial tool with licensing options as below:

  1. Developer seats – $477 approx. / per seat.
  2. Build Machine seats  – $955 approx. / per seat.

** You could get volume discount if you bulk procure your licenses.

Installation: 

Once you obtained license you will able to download NDepend_2018.1.1.9041.zip, is latest version available while I write this article. Extract the zip file into your local folder, you could see the different packages/executables within the package.

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1.) NDepend.Console    – Command line program to execute NDepend analysis.  You would be mostly using this component on CI Build server Help

2.) NDepend.PowerTools –  Helps write your own static analyzer based on NDepend.API, or tweak existing open-source Power Tools. Help

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3.) NDepend.VisualStudioExtension.Installer – To install NDepend extension as part of Visual studio

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4.) VisualNDepend – Independent visual environment for managing your NDepend tasks.

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Visual Tool gives you different options to choose from:

  • You can analyse a Visual Studio Solution or project.
  • Analyse .NET assemblies in a folder.

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For the demo purpose our analysis target would be one of the starter project from github –  ContosoUniversity by @alimon808.

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Demo: Summary Report

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Demo: Application Metrics

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Demo: Dependency Dashboard:

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Demo: Interactive Graph

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Demo: Code Matrix View

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Demo: Quality Gates Summary

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Demo: Rules Summary

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Conclusion:

NDepend is one of the best enterprise grade commercial static analyser seen so far.  There are Visual Studio Code Analysis, FxCop and Stylecop Analyzer tools available but they do not provide extensive level of analysis reports NDepend provides. Being a commercial tool it gives value for money for customers by what they need.  In terms of a day to day developer  or devops lifecycle, you can integrate NDepend in your build process, which could be simple as executing the NDepend Console and reviewing the output. With NDepend’s API it is easy to develop your own custom analysis tools based on CQLinq and NDepend.PowerTools(which is open source). You could find all the detailed help in NDepend documentation.

References: