You deploy your Node.js code to Azure Web Apps. In your code, you want a way to know the commit ID\/hash of the latest deployment.<\/p>\n
Unfortunately, Azure does not keep the information on the latest commit it deployed in environment variables. And This script saves build information to Use the Here's how you can get that information anywhere inside your Node.js application.<\/p>\n If you do have access to This way you can get the latest commit hash without relying on Azure\/Kudu-specific environment variables.<\/p>\n","protected":false},"excerpt":{"rendered":" You deploy your Node.js code to Azure Web Apps. In your code, you want to know the latest deployment commit ID\/hash. Since Azure does not keep the information in environment variables, we will need to call a custom script on each build from package.json.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[778],"tags":[824,769],"class_list":["post-1652","post","type-post","status-publish","format-standard","hentry","category-cloud-serverless","tag-microsoft-azure","tag-node-js","entry"],"_links":{"self":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts\/1652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/comments?post=1652"}],"version-history":[{"count":4,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts\/1652\/revisions"}],"predecessor-version":[{"id":1836,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/posts\/1652\/revisions\/1836"}],"wp:attachment":[{"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/media?parent=1652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/categories?post=1652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/editjournal.redakt.eu\/faxmodem\/wp-json\/wp\/v2\/tags?post=1652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}git<\/code> is not available either for us to look it up with git rev-parse<\/code>.<\/p>\nSet up
build.js<\/code><\/h3>\nbuild.json<\/code> which we can later access at any time after deployment. The script can have any name, not necessarily build.js<\/code>, just make sure it matches what you put into your package.json<\/code> in the next step.<\/p>\nconst fs = require('fs');\nconst path = require('path');\n\n\/\/ Debug info, see Azure Deployment Center logs\nconsole.log("process.env\\n", process.env);\n\n\/\/ Define path to build.json where build information will be stored\nconst filePath = path.join(__dirname, 'build.json');\n\ntry {\n \/\/ Create object with build data\n const buildData = {commitHash: process.env.SCM_COMMIT_ID};\n \/\/ Write build data to build.json\n fs.writeFileSync(filePath, JSON.stringify(buildData), 'utf-8');\n} catch (error) {\n console.error('Failed to generate '+filePath, error);\n}<\/code><\/pre>\nSCM_COMMIT_ID<\/code> comes from projectkudu\/kudu<\/a> where it was introduced in 2013<\/a>. Kudu is the engine behind git deployments in Azure App Service<\/a>. The repository was set to be a read-only public archive in late September 2024, but the tool is said to continue on Azure. There are other environment variables available during deployment, see https:\/\/github.com\/projectkudu\/kudu\/wiki\/Deployment-Environment<\/a>.<\/p>\nAdd your
build.js<\/code> to package.json<\/code><\/h3>\nscripts<\/code> \u2192 build<\/code> directive in package.json<\/code> to schedule our script to be executed on each build.<\/p>\n{\n "name": "example application",\n "version": "1.0.0",\n \/\/ ...\n "scripts": {\n "build": "node build.js",\n },\n \/\/ ...\n}<\/code><\/pre>\nRead the build information when you need it<\/h3>\n
const fs = require('fs');\nconst path = require('path');\n\n\/\/ Read the build information\nconst filePath = path.join(process.cwd(), 'build.json');\nconst buildData = JSON.parse(fs.readFileSync(filePath, 'utf-8'));\n\/\/ Here's the commit hash\nconsole.log(buildData.commitHash);<\/code><\/pre>\nBonus points<\/h3>\n
git<\/code> during build, then simply do this in your build.js<\/code>:<\/p>\nconst { execSync } = require('child_process');\n\nconst commitHash = execSync('git rev-parse --short HEAD').toString().trim();<\/code><\/pre>\n