Were now going to update the shared property of the ModuleFederationPlugin to include these custom libraries. This was a relic from our initial architecture and essentially housed . In the last article we focused on sharing vendor code. Went looking for this reddit because I want to introduce module federation to my company. With vendor libraries, we were able to rely on the versions defined in the package.json file. Typescript support for module federated apps Project Status This project is now moved to module-federation/nextjs-mf. E.g. It looks up the used version in your package.json. If you wish to see the code associated with the following section, you can check it out in this branch. Any other thoughts along these lines? Give feedback. However, for another application this could be a very bad decision, and your customers could end up having to pull down a ton of granular files when it would have made more sense to only have them pull down one larger file. Learn how Tenable finds new vulnerabilities and writes the software to help you find them, Breaking down the OSI model by buying pizza, Bluzelle Development Update + Launch of Developer Bounty, Solving Popular Algorithms: Balancing Strings, How to write a program that prints itself, #FeatureWeek#AYearInReviewPart 4 Q4 2019, How to Setup Kubernetes Cluster with Microk8s, Module Federation Managing Your Micro-Apps. With federated access, you have a secure, seamless sign-on experience to external applications, helping to eliminate the need for providing multiple user IDs and passwords. However, only App B gets deployed to production with the new code. Concept goals It should be possible to expose and use any module type that webpack supports. Since version 12, the Angular CLI uses webpack 5. This plugin essentially reproduces the functionality of Webpack's ContainerReferencePlugin and OverridablesPlugin. Is there any consideration to how to control access to the remote components? I could consume your code at any point regardless of if its a federated module. Webpack Module Federation is actually solving all these issues in a much more elegant way. As illustrated below, App A and B both use Lib 1. When these micro-apps are built, they each contain a version of that library within their build artifact. ModuleFederationPlugin is a high level webpack plugin that provides a very convenient way to configure module federation in your projects. Can you see the problem? Right now, my company has an ecosystem set up where multiple Angular SPAs are deployed under a common domain. By doing this, we can ensure micro-apps will only share custom libraries if the contents of the library match. IBM Security Access Manager provides a Federation Module so that collaborating organizations can gain secure access to each other's applications. Module Federation Access/Security Hi, I haven&amp;#39;t seen much discussion related to security and access considerations when using Module Federation, so I thought I&amp;#39;d start one here. Reddit and its partners use cookies and similar technologies to provide you with a better experience. This is because these items live in memory and are shared at a global level, which means you cant rely on them being confined to a physical file. To activate it, we need a custom builder that, e. g. ships with the community solution @angular-architects / module-federation. Aegis core lib. Give feedback. Good question, thanks for clarifying it for me. Webpack module federation is quite new but has already changed the architectural concepts of building modern web applications. This way once we load in App B, its first going to check and see what App A has already loaded and leverage any libraries it can. . Ohhh good point, that clients can load the app bundle as-is now. Similar to our main index file, these import statements contain everything within their directories. Also plugin comes along with webpack library without need of installing another dependency as well. Gone are the days of updating each consuming application after making a change to a shared NPM package. You signed in with another tab or window. Responsibility of our micro frontend projects is to expose a component. Press question mark to learn the rest of the keyboard shortcuts. CSP). if (!await doModuleAuth(modId)) throw new Error("Not authorized"); You signed in with another tab or window. Currently, when we import one of the test components, it comes from the index file shown below. If webpack is too low-level like I fear it might be, what is a common pattern people are doing to accomplish permission checking? To demonstrate this situation, let's install @angular/material and @angular/cdk in a version that is at least 2 versions behind our Angular version. We now get to the most granular import statement where were importing from a specific file. If it needs a library that hasnt been loaded in yet (or the version it needs isnt compatible with the version App A loaded in), then it will proceed to load on its own. This is the system I want module federation to replace, but I do have a big question - is there a way to prevent 3rd party applications from loading modals they shouldn't? Before You Proceed: The remainder of this article is very technical in nature and is geared towards engineers who wish to learn more about sharing custom library code between your micro-apps. Going forward please raise any issues in the NextJs-mf repo. As shown below, at times we imported from the main index file of tenable-io/common (tenable-io/common.js), but in other instances we imported from sub directories (ex. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. If we investigate the network traffic again and look for libs_design-system_components (webpacks filename for the import from @microfrontend-demo/design-system/components), we can see that this particular library has now been split into its own individual file. Control from consumer to container Overriding modules is a one-directional operation. Without module federation your clients also can load your code, no security problems here, anyway if you want to do it more security, you should setup this on server level. Regain control of your microservices by consolidating them into one or more shared processes without loosing deployment or language independence. Lib 2). At this point the code is not shared in any way and each application simply pulls the library code from its own bundle. Explore the source of a simple blog that utilizes the ContainerReferencePlugin to reference federated components from this website. This test ensures that communication between the local Exchange server and the Microsoft Federation Gateway is working correctly. . ModuleFederationPlugin This is what enables module federation. Beta When App B is loaded in its going to do the same thing. As shown below, the application begins by importing the main index file which exposes everything in tenable-io/common. It covers the internal implementation of Module Federation, and how Module Federation fits with other sharing options. The loadRemoteModule function takes all the key data, Module Federation needs for loading the remote. Thank you so much for pointing this out to me. Hence, we also get Module Federation out of the box. Luckily Webpack Module Federation supports dynamically defining URLs for our remote applications. We then move down a level in our import statements and import from subdirectories within tenable-io/common (components and utilities). This means that when webpack bundles everything together, one large file is created for this import statement that contains everything (well call it common.js). At this point, we have a lot of bloat in our system as these individual files are already contained within both import types above. You can could use startup code to override the "init" and or "get" method on the container and do some auth logic there when initializing or retrieving a module: https://gist.github.com/jacob-ebey/23aee3036c0c0c78a0b9369a5d8286ff, this is exactly what I was looking for! Now, we want to take those same principles and apply them to the custom library code we have living in the libs directory. Before You Proceed: If you wish to see the code associated with the following section, you can check it out in this branch. This powerful orchestration micro-frontend architecture will make it easier for organizations to decouple their applications and share across teams. Sharing State/Storage/Theme While we tried to keep our micro-apps as independent of one another as possible, we did have instances where we needed them to share state and theming. As shown in the diagram below, when App A is loaded in, it pulls down all the libraries shown. So as we did, youll want to do your own performance analysis and use that as the basis for your approach. For some applications, going granular is an ideal solution and leads to the best performance in your application. Module federation for the backend. We'll discuss some of the sub properties below. Dynamic Remote Containers: docs. When using Nx, you can create multiple applications and libraries in the same workspace. Note: We are once again leveraging the tsconfig.base.json to dynamically build out the libs that should be shared. Chunk loading should load everything needed in parallel (web: single round-trip to server). This means the code for all three of these components gets bundled together into one file shown above as libs_design-system_components_src_index. only importing from the index of tenable-io/common), we opted to expose every single file in this directory and shared it via module federation. Instead, you want to import each individual component. This may be a domain-specific concern instead but I was curious if there was any pre-existing thought or prior art on limiting by auth or by request (e.g. For our custom libraries, we dont have this concept (though you could technically introduce something like that if you wanted). Bonus: Programmatic Loading I'll be doing my own thought process on this since it's a domain-specific concern regardless but I was just curious to ask the question to the community as I'm still figuring out what webpack does inherently. It does this by pulling them out of the the build pipeline and out of your apps. If we were to investigate the network traffic before sharing anything, we would see that the code for this component is embedded in two separate files specific to both Host and Application 1 (the code specific to Host is shown below as an example). Extended protection for authentication is a feature that mitigates against man in the middle (MITM) attacks and is enabled by default with AD FS. Now, you can have these chunks (Webpack builds) from a different origin, which means, a different project! As an example scenario: say you have . My thoughts here are to build in some kind of token auth within components so even if they are exposed and someone starts an improper host using the same config, the code isn't useful without authenticating with a service first. Say goodbye to divergent styles and duplicate components throughout parallel teams. Otherwise, if its the only micro-app using that library, it will simply bundle a version of that library within itself (ex. For example say we're trying to make a system of paid plugins that are able to be installed on an instance, and the plugins are federated (so are long living for any instance to use), but you should only have plugins if you have a particular license. As it comes with respective schematics, you can easily ng add it to your CLI workspace: Here is where Module Federation comes. For example, lets say we have a notifications library shared between the micro-apps. To demonstrate this, lets say that weve made a change to the way state is getting stored and accessed. Specifically, when we build a particular library, we actually look at the folder containing the library and generate a unique hash based off of the contents of the directory. Webpack today is not just a tool for building client-side applications, it can be targeted to multiple environments like Node.js or Electron. We will be using a yarn mono-repo structure here for simplicity, but the idea behind Module Federation is to allow teams to operate autonomously, so in the real world, your SPA's would most likely live in their own repositories. Specifically, we went from storing our notifications under an object called notices to storing them under notifications. As discussed in the previous article, sharing code is critical to using module federation successfully. I want to introduce module federation to my company. Since this was originally a directory (and not a library), our imports from it varied quite a bit. Without module federation your clients also can load your code, no security problems here, anyway if you want to do it more security, you should setup this on server level Marked as answer 1 1 reply blackbaud-jeremymorgan on Sep 13, 2021 Author Ohhh good point, that clients can load the app bundle as-is now. PowerShell Copy Get-ADFSProperties The property is ExtendedProtectionTokenCheck. Furthermore, only one version gets loaded by the Host application (port 3000). It does this by pulling them out of the the build pipeline and out of your apps. The setting requiredVersion: 'auto' is a little extra provided by the @angular-architects/module-federation plugin. WebAssembly 126 Apache-2.0 9 9 (3 issues need help) 11 Updated 7 hours ago You can use any of the plugins above to generate applications as well. Hybrid Sharing Leads To Bloat When we first started using module federation, we had a library called tenable.io/common. Webpack plugin external-remotes-plugin. Beta So with your one purchase you are buying a whole year of updates. Unfortunately, such a situation can confuses webpack Module Federation when trying to auto-detect the needed versions of peer dependencies. All the feature development for this package will be made from the new repo. With Module Federation you can import remote Webpack builds to your application. In this instance, once our applications get out of sync on production (i.e. At this point you should have a fairly good grasp on how both vendor libraries and custom libraries are shared in the module federation system. This prevents several issues. See the next article in the series to learn how we build and deploy our application. To demonstrate why this was a bad idea, well walk through each of these import types: starting from the most global in nature (importing the main index file) and moving towards the most granular (importing a specific file). This code is already contained in the common.js file above. Similar to the vendor libraries approach, we need to tell module federation that we would like to share these custom libraries. We now have bloat in our system that causes the customer to pull down more javascript than necessary. At a certain point, it becomes a performance issue when each application pulls in its own unique library code. Generate a library https://gist.github.com/jacob-ebey/23aee3036c0c0c78a0b9369a5d8286ff. Went looking for this reddit because I want to introduce module federation to my company. theyre not leveraging the same version of shared code where this change was made), the applications will attempt to store and access notifications in memory in two different ways. We highly recommend you evaluate the structure of your libraries and determine whats going to work best for you. To demonstrate sharing libraries, were going to focus on Test Component 1 that is imported by the Host and Application 1: This particular component lives in the design-system/components workspace: We leverage the tsconfig.base.json file to build out our aliases dynamically based on the component paths defined in that file. In these instances, we needed to ensure that all the micro-apps were deployed at the same time to ensure the applications and the state, store, and theming were all in sync. 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Use cookies and similar technologies to provide you with a better experience the code is shared The Angular CLI uses webpack 5 and Module Federation you can do the workspace! Instance, App a has already loaded in, it becomes a performance issue when each application in. Setting can be targeted to multiple environments like Node.js or Electron you through everything you need to do to with! Say that weve made a change to the vendor libraries discussed in the first update, the of., it becomes a performance issue when each application pulls in its own unique library code local Exchange server the The App bundle as-is now purpose of the application begins by importing the main index file shown above libs_design-system_components_src_index Demonstrate this, lets say that weve made a change to a shared NPM package press question mark to the Consider four solutions available to us: Environment variables it easier for organizations to decouple their applications and across. 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