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class="mb-3"><a class="text-body" href="/blog/why-the-answer-plugin-system-was-designed-this-way">The Packaging Process for Answer Plugins</a></h1><div class="d-flex align-items-center text-secondary"><div class="me-3">LinkinStar</div><time class="me-3" datetime="2023-07-22T00:00:00.000Z">July 22, 2023</time><div>3 min read<!-- --></div></div></header></div></div><div class="col-lg-2 col-md-12"></div></div><div class="justify-content-end row"><div class="col-lg-8 col-md-12"><article class="px-0 px-lg-5 pb-5 mb-5" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><meta itemprop="image" content="https://answer.apache.org/2023-07-22-cover@4x.png"><div id="__blog-post-container" class="markdown" itemprop="articleBody"><div class="mb-4"><img decoding="async" loading="lazy" src="/assets/images/2023-07-22-cover@4x-adfc331ff0caa372bd48d7c798155678.png" class="rounded img_RAU7" width="1280px" height="720px"></div><blockquote> |
| <!-- --><ol> |
| <!-- --><li>Why is Answer's plugin system designed in such a way that it seems a bit difficult to use?</li> |
| <!-- --><li>How can I implement plugin functionality using Golang?</li> |
| <!-- --><li>What exactly does Answer's plugin system do when it is compiled and packaged?</li> |
| <!-- --></ol> |
| <!-- --></blockquote> |
| <!-- --><h2 class="anchor anchorWithStickyNavbar_loeA" id="background">Background<!-- --><a href="#background" class="hash-link" aria-label="Direct link to Background" title="Direct link to Background"></a></h2> |
| <!-- --><p>You can build a Q&A community using Answer easily. However, the basic features of Answer may not sufficiently support to every use case. |
| Therefore, we need to design a plugin system to extend its features. |
| As you may know, Answer is built using <!-- --><code>React.js</code> and <!-- --><code>Golang</code>. Both these languages require compilation. So designing a plugin system is a bit difficult.<!-- --></p> |
| <!-- --><h2 class="anchor anchorWithStickyNavbar_loeA" id="goal--features">Goal & Features<!-- --><a href="#goal--features" class="hash-link" aria-label="Direct link to Goal & Features" title="Direct link to Goal & Features"></a></h2> |
| <!-- --><p>The goal of Answer's plugin system is to provide a <!-- --><strong>flexible</strong> and <!-- --><strong>extendable</strong> architecture that can accommodate a wide range of use cases. Some of the key features of the plugin system include:<!-- --></p> |
| <!-- --><h3 class="anchor anchorWithStickyNavbar_loeA" id="connectors">Connectors<!-- --><a href="#connectors" class="hash-link" aria-label="Direct link to Connectors" title="Direct link to Connectors"></a></h3> |
| <!-- --><p>By default, Answer supports login via email and password. Within the plugin system, developers can easily integrate other authentication, such as GitHub.</p> |
| <!-- --><img src="/assets/images/answer-plugin-connector-2e7bb37348532629256d812cec021c34.png" alt="install-choose-language" width="400"> |
| <!-- --><h3 class="anchor anchorWithStickyNavbar_loeA" id="storage">Storage<!-- --><a href="#storage" class="hash-link" aria-label="Direct link to Storage" title="Direct link to Storage"></a></h3> |
| <!-- --><p>Out of the box, Answer stores files in the local file system. However, there could be scenarios where users might prefer to save their uploaded files to a cloud storage service like <!-- --><code>S3</code>. This can be achieved by the plugin system.<!-- --></p> |
| <!-- --><img src="/assets/images/answer-plugin-storage-014f1ac8b8e1939c2a8d99253adb9724.png" alt="install-choose-language" width="400"> |
| <!-- --><h2 class="anchor anchorWithStickyNavbar_loeA" id="implementation">Implementation<!-- --><a href="#implementation" class="hash-link" aria-label="Direct link to Implementation" title="Direct link to Implementation"></a></h2> |
| <!-- --><p>Now, let's explore how the plugin system is implemented, followed by the reasons behind our design decisions.</p> |
| <!-- --><h3 class="anchor anchorWithStickyNavbar_loeA" id="details">Details<!-- --><a href="#details" class="hash-link" aria-label="Direct link to Details" title="Direct link to Details"></a></h3> |
| <!-- --><p>The general process is as follows:</p> |
| <!-- --><img src="/assets/images/answer-plugin-build-brief-b0b7164eb72df5d3d2b6b0e24f53be2a.png" alt="install-choose-language" width="400"> |
| <!-- --><p>Here are the steps involved in implementing a plugin:</p> |
| <!-- --><ol> |
| <!-- --><li>Generate a <!-- --><code>main.go</code> file.<!-- --></li> |
| <!-- --><li>Import the specific plugin list.</li> |
| <!-- --><li>Execute <!-- --><code>go mod tidy</code> and <!-- --><code>go mod vendor</code> to manage dependencies.<!-- --></li> |
| <!-- --><li>Copy the UI directory.</li> |
| <!-- --><li>Overwrite the <!-- --><code>index.ts</code> file.<!-- --></li> |
| <!-- --><li>Execute <!-- --><code>pnpm install</code> and <!-- --><code>pnpm build</code> to manage the package and build the project.<!-- --></li> |
| <!-- --><li>Merge the <!-- --><code>i18n</code> file from the plugin with the original <!-- --><code>i18n</code> file.<!-- --></li> |
| <!-- --><li>Build a new binary.</li> |
| <!-- --><li>Clean up the byproducts generated during the build process.</li> |
| <!-- --></ol> |
| <!-- --><p><img decoding="async" loading="lazy" alt="answer-plugin-build-all.png" src="/assets/images/answer-plugin-build-all-4a2d4f7304dd15a01d1c624a8a0826a2.png" width="1862" height="846" class="img_RAU7"></p> |
| <!-- --><h3 class="anchor anchorWithStickyNavbar_loeA" id="reason">Reason<!-- --><a href="#reason" class="hash-link" aria-label="Direct link to Reason" title="Direct link to Reason"></a></h3> |
| <!-- --><p>Here are the reasons behind our design choices:</p> |
| <!-- --><h4 class="anchor anchorWithStickyNavbar_loeA" id="static-compilation">Static Compilation<!-- --><a href="#static-compilation" class="hash-link" aria-label="Direct link to Static Compilation" title="Direct link to Static Compilation"></a></h4> |
| <!-- --><blockquote> |
| <!-- --><p>This is the main reason why the plugin system is designed this way.</p> |
| <!-- --></blockquote> |
| <!-- --><p><code>React.js</code> and <!-- --><code>Golang</code> both these languages require compilation. They are not dynamically executable like some other scripting languages. |
| So the plugin system should be a static compilation, which means that the application and plugins are compiled together, resulting in a single binary that can be easily distributed and deployed.<!-- --></p> |
| <!-- --><h4 class="anchor anchorWithStickyNavbar_loeA" id="fixed-functionality">Fixed Functionality<!-- --><a href="#fixed-functionality" class="hash-link" aria-label="Direct link to Fixed Functionality" title="Direct link to Fixed Functionality"></a></h4> |
| <!-- --><p>The plugin system allows users to add features that are fixed for their specific use cases without changing the core system. |
| Furthermore, these functionalities persistently remain operational once they are employed. |
| Therefore, it is sufficient to deliberate on the necessities of their incorporation at the initial stage, and subsequently, package them accordingly. |
| In the future, we can build a Docker image that contains all official plugins, thereby enabling users to access the entire range of features. The enablement or disablement of these functionalities can be managed through the plugin control interface.</p> |
| <!-- --><h4 class="anchor anchorWithStickyNavbar_loeA" id="extension">Extension<!-- --><a href="#extension" class="hash-link" aria-label="Direct link to Extension" title="Direct link to Extension"></a></h4> |
| <!-- --><p>The most important capability of a plugin system is its extensibility. |
| A program can't provide all the functions that every user wants. |
| However, with a plugin system, users can develop their plugins to help them achieve the functions that they want.</p> |
| <!-- --><h2 class="anchor anchorWithStickyNavbar_loeA" id="reference">Reference<!-- --><a href="#reference" class="hash-link" aria-label="Direct link to Reference" title="Direct link to Reference"></a></h2> |
| <!-- --><p>The Caddy is a great open-source software that inspired the design of the Answer plugin system. |
| Caddy is a web server that allows developers to extend its functionality using plugins. |
| Using <!-- --><a href="https://github.com/caddyserver/xcaddy/" target="_blank" rel="noopener noreferrer">xcaddy</a> can easy to make custom builds of the Caddy Web Server.<!-- --></p> |
| <!-- --><h2 class="anchor anchorWithStickyNavbar_loeA" id="more">More<!-- --><a href="#more" class="hash-link" aria-label="Direct link to More" title="Direct link to More"></a></h2> |
| <!-- --><p>In this blog post, we discussed the design and implementation of the plugin system for Answer, a popular open-source Q&A platform. |
| We discussed the motivation behind the design, and the features and principles of the plugin system, and provided a step-by-step guide on implementation. |
| If you are interested in developing plugins for Answer, please feel free to leave us a comment. |
| We will also write an article on how to implement an Answer plugin from scratch, so stay focused!</p></div><div class="mt-3"><div class="d-flex align-items-center text-secondary"><span>Share to<!-- --></span><button aria-label="twitter" class="react-share__ShareButton shareBtn_lEr0" style="background-color:transparent;border:none;padding:0;font:inherit;color:inherit;cursor:pointer"><i class="br bi-twitter" style="font-size:16px"></i></button><button title="The Packaging Process for Answer Plugins" aria-label="facebook" class="react-share__ShareButton shareBtn_lEr0" style="background-color:transparent;border:none;padding:0;font:inherit;color:inherit;cursor:pointer"><i class="br bi-facebook" style="font-size:16px"></i></button><button aria-label="linkedin" class="react-share__ShareButton shareBtn_lEr0" style="background-color:transparent;border:none;padding:0;font:inherit;color:inherit;cursor:pointer"><i class="br bi-linkedin" style="font-size:16px"></i></button></div><div 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