deploy.yml

name: Deploy

on:
  workflow_dispatch:
    inputs:
      components:
        description: "The list of components to deploy"
        required: true
        type: string

      nomad_environment:
        description: "The environment to deploy to"
        required: true
        default: "production"
        type: choice
        options:
          - staging
          - production

      # In the form of "component,cpu:ram;component2,cpu:ram"
      nomad_resources:
        description: "The resources to use when deploying"
        required: false
        default: "grid-bot,2000:1024"
        type: string

permissions:
  deployments: write
     
jobs:
  parse-input-components:
    name: Validate and find component directories
    runs-on: ubuntu-latest

    outputs:
      nomad-files: ${{ steps.components-to-nomad-jobs.outputs.nomad-files }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Validate and Find components
        uses: mfdlabs/component-finder-action@v8
        id: find-component-directories
        with:
          components: ${{ github.event.inputs.components }}
          component-search-directories: services

      - name: Components to Nomad Jobs
        uses: mfdlabs/component-nomad-parser-action@v14
        id: components-to-nomad-jobs
        env:
          NOMAD_ENVIRONMENT: ${{ github.event.inputs.nomad_environment }}
          NOMAD_SHORT_ENVIRONMENT: ${{ github.event.inputs.nomad_environment == 'production' && 'prod' || 'stage' }}
        with:
          components: ${{ steps.find-component-directories.outputs.components }}
          resources: ${{ github.event.inputs.nomad_resources }}

  deploy-nomad-jobs:
    name: Deploy Nomad Jobs
    runs-on: grid-bot-infra

    needs: parse-input-components

    if: ${{ needs.parse-input-components.outputs.nomad-files != '{}' && needs.parse-input-components.outputs.nomad-files != '' }}

    env:
      NOMAD_ADDR: ${{ vars.NOMAD_ADDR }}
      NOMAD_TOKEN: ${{ secrets.NOMAD_TOKEN }}

    steps:
      - name: Setup Nomad CLI
        uses: nferch/setup-nomad@v4.0.0
        env:
          NOMAD_TLS_SKIP_VERIFY: 1

      - name: Set Initial GitHub Deployment Status
        uses: chrnorm/deployment-action@v2
        id: deployment
        continue-on-error: true
        with:
          token: "${{ secrets.DEPLOYER_TOKEN }}"
          environment: "${{ github.event.inputs.nomad_environment }}"
          description: "Components: ${{ github.event.inputs.components }}"

      - name: Deploy Nomad Jobs
        uses: actions/github-script@v7
        id: deploy-nomad-jobs
        continue-on-error: true
        with:
          script: |
            const fs = require('fs');
            const path = require('path');
            const child_process = require('child_process');

            let jobs = ${{ needs.parse-input-components.outputs.nomad-files }};
            jobs = new Map(Object.entries(jobs));

            const failedJobs = [];

            for (const [jobName, jobDefinition] of jobs) {
              const [componentName] = jobName.split(':'); 

              // Equivalent to mktemp 
              const tempFile = path.join(process.env.RUNNER_TEMP, `nomad-job-${componentName}.hcl`);

              fs.writeFileSync(tempFile, jobDefinition);

              // Poll the job status
              try {
                child_process.execSync(`nomad job run ${tempFile}`, { stdio: 'inherit' });
              } catch (error) {
                failedJobs.push(jobName);
              }
            }

            if (failedJobs.length > 0) {
              core.setFailed(`Failed to deploy the following jobs: ${failedJobs.join(', ')}`);
            }

      - name: Set GitHub Deployment Status
        uses: chrnorm/deployment-status@v2
        continue-on-error: true
        with:
          token: "${{ secrets.DEPLOYER_TOKEN }}"
          deployment-id: ${{ steps.deployment.outputs.deployment_id }}
          description: "Components: ${{ github.event.inputs.components }}"

          # If the "deploy" step fails, the deployment status will be set to "failure"
          # If the "deploy" step succeeds, the deployment status will be set to "success"
          state: "${{ steps.deploy-nomad-jobs.outcome }}"