I could consume your code at any point regardless of if its a federated module. In this case, thats okay because the code is constrained to an actual file. At a certain point, it becomes a performance issue when each application pulls in its own unique library code. By doing this, we can ensure micro-apps will only share custom libraries if the contents of the library match. Thank you so much for pointing this out to me. "Practical Module Federation" is the first, and only, book on Webpack 5's innovative new live code sharing mechanism. Since version 12, the Angular CLI uses webpack 5. Went looking for this reddit because I want to introduce module federation to my company. In the last article we focused on sharing vendor code. PowerShell Copy Get-ADFSProperties The property is ExtendedProtectionTokenCheck. As a result, they can both operate independently without bugs. A Rollup plugin which enables consumption of Federated Modules. Dynamic Remote Containers: docs. ModuleFederationPlugin is a high level webpack plugin that provides a very convenient way to configure module federation in your projects. CSP). Webpack module federation is quite new but has already changed the architectural concepts of building modern web applications. 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. Regain control of your microservices by consolidating them into one or more shared processes without loosing deployment or language independence. This article focuses on the importance of sharing your custom library code between applications and some related best practices. In this instance, once our applications get out of sync on production (i.e. . ModuleFederationPlugin combines ContainerPlugin and ContainerReferencePlugin. Assuming you read the previous article, you now know why this is important. However, the mechanism of defining a version is different. Webpack 5 Module Federation aims to solve the sharing of modules in a distributed system, by shipping those critical shared pieces as macro or as micro as you would like. For our custom libraries, we dont have this concept (though you could technically introduce something like that if you wanted). if (!await doModuleAuth(modId)) throw new Error("Not authorized"); You signed in with another tab or window. 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. As you can imagine, this can have a dramatic impact on the performance of your application. As it comes with respective schematics, you can easily ng add it to your CLI workspace: I get it, but is this really a concern? Good question, thanks for clarifying it for me. For example, lets say we have a notifications library shared between the micro-apps. Say goodbye to divergent styles and duplicate components throughout parallel teams. 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. When App B is loaded in its going to do the same thing. Hi, I haven't seen much discussion related to security and access considerations when using Module Federation, so I thought I'd start one here. Here is where Module Federation comes. For us, this was evident in our application early on and it was not until we did a thorough performance analysis that we discovered the culprit. Also plugin comes along with webpack library without need of installing another dependency as well. To avoid updating all of these import statements to use a consistent approach (ex. The Problem: Security Tokens in the Browser. . 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). Went looking for this reddit because I want to introduce module federation to my company. Press question mark to learn the rest of the keyboard shortcuts. Let services deploy themselves. This was a relic from our initial architecture and essentially housed . Module Federation allows to directly bundle shared dependencies into your app's bundles. This test ensures that communication between the local Exchange server and the Microsoft Federation Gateway is working correctly. Webpack 5 Module Federation aims to solve the sharing of modules in a distributed system, by shipping those critical shared pieces as macro or as micro as you would like. Currently, when we import one of the test components, it comes from the index file shown below. 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. Concept goals It should be possible to expose and use any module type that webpack supports. When it came to the code in our libs directory, we discovered two important things along the way that you should be aware of. If you wish to see the code associated with the following section, you can check it out in this branch. Ohhh good point, that clients can load the app bundle as-is now. As an example scenario: say you have . 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? It covers the internal implementation of Module Federation, and how Module Federation fits with other sharing options. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Give feedback. We are going to consider four solutions available to us: Environment variables. Typically, shared code lives in an actual file (some-file.js) that resides within a micro-apps bundle. The setting requiredVersion: 'auto' is a little extra provided by the @angular-architects/module-federation plugin. 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. Instead, you want to import each individual component. As illustrated below, App A and B both use Lib 1. You can read more about how we handled this via a Jenkins bootstrapper job in the next article. 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. it enabled us to spin . The book also covers many practical topics include; state sharing across shared code, different deployment options, sharing non-view related code, writing your code to be resilient to code and network failures, and so much more. So with your one purchase you are buying a whole year of updates. Webpack today is not just a tool for building client-side applications, it can be targeted to multiple environments like Node.js or Electron. 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. Chunk loading should load everything needed in parallel (web: single round-trip to server). remotes This is the primary difference between the host application and the. We used a similar approach above for building out our aliases. If SPA A wants to utilize another SPA's (SPA B) modal for whatever, the system in place relies on opening a browser-sized iframe to SPA B where the modal is displayed. In short, each parts of the application can come with their own libraries, that will be made available . 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. if (!await doGlobalAuth ()) throw new Error("Not authorized"); module.exports.get = async (modId, rest) => {, // This could be more easily handled gracefully by a consumer via dynamic importing. Unfortunately, such a situation can confuses webpack Module Federation when trying to auto-detect the needed versions of peer dependencies. If webpack is too low-level like I fear it might be, what is a common pattern people are doing to accomplish permission checking? At this point, we have a lot of bloat in our system as these individual files are already contained within both import types above. 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. As discussed in the previous article, sharing code is critical to using module federation successfully. If SPA A wants to utilize another SPA's (SPA B) modal for whatever, the system in place relies on opening a browser-sized iframe to SPA B where . WebAssembly 126 Apache-2.0 9 9 (3 issues need help) 11 Updated 7 hours ago Gone are the days of updating each consuming application after making a change to a shared NPM package. Staying up to date on technology and patterns are important, allowing me to work within your existing stack, or propose one that will scale far into the future. Module federation for the backend. Reddit and its partners use cookies and similar technologies to provide you with a better experience. If webpack is too low-level like I fear it might be, what is a common pattern people are doing to accomplish permission checking? 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. 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. It looks up the used version in your package.json. const doModuleAuth = async (modId) => true; module.exports.init = async (args) => {, // This will most likely totally blow up the consuming application. Specifically, we went from storing our notifications under an object called notices to storing them under notifications. Otherwise, if its the only micro-app using that library, it will simply bundle a version of that library within itself (ex. As shown in the diagram below, when App A is loaded in, it pulls down all the libraries shown. This way, if the contents of the folder change, then the version does as well. Module Federation Access/Security Hi, I haven't seen much discussion related to security and access considerations when using Module Federation, so I thought I'd start one here. https://gist.github.com/jacob-ebey/23aee3036c0c0c78a0b9369a5d8286ff. 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 shown below, the application begins by importing the main index file which exposes everything in tenable-io/common. See the next article in the series to learn how we build and deploy our application. So as we did, youll want to do your own performance analysis and use that as the basis for your approach. With vendor libraries, we were able to rely on the versions defined in the package.json file. The problem is once again that App B is pulling down duplicate libraries that App A has already loaded in. Is there any consideration to how to control access to the remote components? In the first update, the presentation portion of this library is updated. 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? You can use any of the plugins above to generate applications as well. Now, you can have these chunks (Webpack builds) from a different origin, which means, a different project! It does this by pulling them out of the the build pipeline and out of your apps. Any other thoughts along these lines? Aegis core lib. Limitations 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. 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. Give feedback. To demonstrate this, lets say that weve made a change to the way state is getting stored and accessed. Right now, my company has an ecosystem set up where multiple Angular SPAs are deployed under a common domain. We now get to the most granular import statement where were importing from a specific file. Explore the source of a simple blog that utilizes the ContainerReferencePlugin to reference federated components from this website. This plugin essentially reproduces the functionality of Webpack's ContainerReferencePlugin and OverridablesPlugin. someone starts their own improper host to consume from the remote. Installation $ npm i @module-federation/typescript Usage This code is already contained in the common.js file above. 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). The loadRemoteModule function takes all the key data, Module Federation needs for loading the remote. Eliminate the need for deployment automation. Luckily Webpack Module Federation supports dynamically defining URLs for our remote applications. When using Nx, you can create multiple applications and libraries in the same workspace. As your application grows, so does the amount of code you share. Right now, my company has an ecosystem set up where multiple Angular SPAs are deployed under a common domain. To verify the settings, you can do the following: The setting can be verified using the below PowerShell cmdlet. This prevents several issues. Teams can consume components at runtime instead of as part of their build pipeline. This powerful orchestration micro-frontend architecture will make it easier for organizations to decouple their applications and share across teams. We'll discuss some of the sub properties below. Extended protection for authentication is a feature that mitigates against man in the middle (MITM) attacks and is enabled by default with AD FS. Beta If SPA A wants to utilize another SPA's (SPA B) modal for whatever, the system in place relies on opening a browser-sized iframe to SPA B where the modal is displayed. Webpack Module Federation is actually solving all these issues in a much more elegant way. module-federation/node module-federation/utilities module-federation/typescript Generate an application Run nx g @nrwl/next:app my-app to generate an application. A connection to the Microsoft Federation Gateway is established. Were now going to update the shared property of the ModuleFederationPlugin to include these custom libraries. Responsibility of our micro frontend projects is to expose a component. Before You Proceed: If you wish to see the code associated with the following section, you can check it out in this branch. Similar to the vendor libraries approach, we need to tell module federation that we would like to share these custom libraries. 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. You signed in with another tab or window. This was a relic from our initial architecture and essentially housed all the shared code that our various applications used. Sure, and I get that. This was the purpose of the serve script shown above, i.e. Typescript support for module federated apps Project Status This project is now moved to module-federation/nextjs-mf. It does this by pulling them out of the the build pipeline and out of your apps. This key data is just several strings, hence you can load it from literally everywhere. In this instance, App A and B will use their own versions within each of their bundles. 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. Sharing our libraries is similar to the vendor libraries discussed in the previous article. Note: We are once again leveraging the tsconfig.base.json to dynamically build out the libs that should be shared. Beta 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. Going forward please raise any issues in the NextJs-mf repo. Promise Based Dynamic Remotes: docs. Currently, you could import these chunks but they would have to come from your same project.
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