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Commit 62d30ec

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Create a very simple CLI wrapper (#2)
* Move heavy lifting parts into a dedicated module That way, you should be able to reuse most of the action-code, but replace the GitHub Actions specific part with other wrappers. For example, a simple CLI command could be used to trigger deployments as well. * Add a very simple CLI wrapper to trigger deployments * Add a package version * Catch missing appspec.yml files early on * Pass the "core" module * Avoid querying for parameters that should have sane defaults * Improve exception handling * Remove commented-out code, bump dependencies
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‎README.md

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@@ -165,7 +165,7 @@ The IAM User that is used to run the action requires the following IAM permissio
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As a note to my future self, in order to work on this repo:
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* Clone it
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* Run `npm install` to fetch dependencies
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* Run `yarn install` to fetch dependencies
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* _hack hack hack_
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* Run `npm run build` to update `dist/*`, which holds the files actually run
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* Read https://help.github.com/en/articles/creating-a-javascript-action if unsure.

‎cli.js

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'use strict';
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(async function () {
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var core = require('@actions/core');
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core.setOutput = function () {};
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core.setFailed = function (message) {
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console.log(message instanceof Error ? message.toString() : message);
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process.exitCode = 1;
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}
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const fs = require('fs');
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if (!fs.existsSync('./appspec.yml')) {
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core.setFailed("❓ ./appspec.yml does not exist. Make sure you are in the project's top level directory.");
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process.exit();
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}
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const simpleGit = require('simple-git');
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const git = simpleGit();
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var branchName, commitId;
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try {
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await git.init();
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const remotes = await git.getRemotes(true);
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var applicationName, fullRepositoryName;
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for (const remote of remotes) {
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if (remote.name !== 'origin') {
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continue;
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}
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const url = remote.refs.push;
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var matches
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if (matches = url.match(/git@github.com:([a-z0-9_-]+)\/([a-z0-9_-]+).git/)) {
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applicationName = matches[2];
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fullRepositoryName = `${matches[1]}/${matches[2]}`;
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}
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}
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branchName = await git.revparse(['--abbrev-ref', 'HEAD']);
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commitId = await git.revparse(['HEAD']);
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} catch (e) {
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core.setFailed('🌩 Failed to parse git information. Are you sure this is a git repo?')
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process.exit();
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}
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if (!applicationName || !fullRepositoryName) {
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core.setFailed("❓ Unable to parse GitHub repository name from the 'origin' remote.");
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process.exit();
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}
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console.log("🚂 OK, let's ship this...");
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console.log(`GitHub 💎 repository '${fullRepositoryName}'`);
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console.log(`Branch 🎋 ${branchName}`);
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console.log(`Commit ⚙️ ${commitId}`);
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const prompt = require('prompt');
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prompt.message = '';
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prompt.start();
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try {
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await prompt.get({
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properties: {
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confirm: {
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name: 'yes',
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message: 'Type "yes" to create deployment',
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validator: /yes/,
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warning: 'Must respond yes to continue',
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default: ''
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}
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}
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});
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} catch (e) {
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core.setFailed('🙈 Aborted.');
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process.exit();
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}
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const action = require('./create-deployment');
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try {
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await action.createDeployment(applicationName, fullRepositoryName, branchName, commitId, core);
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} catch (e) {
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console.log(`👉🏻 ${e.message}`);
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process.exit(1);
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}
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})();

‎create-deployment.js

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'use strict';
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function fetchBranchConfig(branchName) {
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const fs = require('fs');
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const yaml = require('js-yaml');
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let fileContents = fs.readFileSync('./appspec.yml', 'utf8');
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let data = yaml.safeLoad(fileContents);
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for (var prop in data.branch_config) {
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var regex = new RegExp('^' + prop + '$', 'i');
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if (branchName.match(regex)) {
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if (data.branch_config[prop] == null) {
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console.log(`🤷🏻‍♂️ Found an empty appspec.yml -> branch_config for '${branchName}' – skipping deployment`);
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process.exit();
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}
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console.log(`💡 Using appspec.yml -> branch_config '${prop}' for branch '${branchName}'`);
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return data.branch_config[prop];
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}
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}
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console.log(`❓ Found no matching appspec.yml -> branch_config for '${branchName}' – skipping deployment`);
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process.exit();
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}
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exports.createDeployment = async function(applicationName, fullRepositoryName, branchName, commitId, core) {
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const branchConfig = fetchBranchConfig(branchName);
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const safeBranchName = branchName.replace(/[^a-z0-9-/]+/gi, '-').replace(/\/+/, '--');
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const deploymentGroupName = branchConfig.deploymentGroupName ? branchConfig.deploymentGroupName.replace('$BRANCH', safeBranchName) : safeBranchName;
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const deploymentGroupConfig = branchConfig.deploymentGroupConfig;
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const deploymentConfig = branchConfig.deploymentConfig;
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console.log(`🎳 Using deployment group '${deploymentGroupName}'`);
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const client = require('aws-sdk/clients/codedeploy');
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const codeDeploy = new client();
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try {
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await codeDeploy.updateDeploymentGroup({
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...deploymentGroupConfig,
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...{
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applicationName: applicationName,
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currentDeploymentGroupName: deploymentGroupName
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}
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}).promise();
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console.log(`⚙️ Updated deployment group '${deploymentGroupName}'`);
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core.setOutput('deploymentGroupCreated', false);
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} catch (e) {
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if (e.code == 'DeploymentGroupDoesNotExistException') {
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await codeDeploy.createDeploymentGroup({
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...deploymentGroupConfig,
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...{
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applicationName: applicationName,
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deploymentGroupName: deploymentGroupName,
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}
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}).promise();
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console.log(`🎯 Created deployment group '${deploymentGroupName}'`);
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core.setOutput('deploymentGroupCreated', true);
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} else {
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core.setFailed(`🌩 Unhandled exception`);
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throw e;
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}
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}
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let tries = 0;
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while (true) {
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if (++tries > 5) {
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core.setFailed('🤥 Unable to create a new deployment (too much concurrency?)');
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return;
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}
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try {
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var {deploymentId: deploymentId} = await codeDeploy.createDeployment({
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...deploymentConfig,
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...{
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applicationName: applicationName,
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deploymentGroupName: deploymentGroupName,
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revision: {
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revisionType: 'GitHub',
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gitHubLocation: {
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commitId: commitId,
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repository: fullRepositoryName
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}
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}
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}
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}).promise();
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console.log(`🚚️ Created deployment ${deploymentId} – https://console.aws.amazon.com/codesuite/codedeploy/deployments/${deploymentId}?region=${codeDeploy.config.region}`);
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core.setOutput('deploymentId', deploymentId);
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core.setOutput('deploymentGroupName', deploymentGroupName);
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break;
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} catch (e) {
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if (e.code == 'DeploymentLimitExceededException') {
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var [, otherDeployment] = e.message.toString().match(/isalreadydeployingdeployment\'(d-\w+)\'/);
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console.log(`😶 Waiting for another pending deployment ${otherDeployment}`);
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try {
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await codeDeploy.waitFor('deploymentSuccessful', {deploymentId: otherDeployment}).promise();
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console.log(`🙂 The pending deployment ${otherDeployment} sucessfully finished.`);
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} catch (e) {
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console.log(`🤔 The other pending deployment ${otherDeployment} seems to have failed.`);
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}
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continue;
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} else {
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core.setFailed(`🌩 Unhandled exception`);
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throw e;
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}
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}
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}
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console.log(`⏲ Waiting for deployment ${deploymentId} to finish`);
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try {
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await codeDeploy.waitFor('deploymentSuccessful', {deploymentId: deploymentId}).promise();
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console.log('🥳 Deployment successful');
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} catch (e) {
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core.setFailed(`😱 The deployment ${deploymentId} seems to have failed.`);
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throw e;
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}
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}

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