reusable-pager.yml

name: 'PagerDuty: Trigger Alert'

on:
  workflow_call:
    secrets:
      PAGERDUTY_INTEGRATION_KEY:
        description: 'Integration key for PagerDuty'
        required: true
    inputs:
      retries:
        description: 'The number of times to retry sending a page on an intermittent error (e.g. HTTP 429, 500 response codes); note exponential backoff is in use'
        type: number
        default: 4
      summary:
        description: 'A brief text summary of the event, used to generate the summaries/titles of any associated alerts. The maximum permitted length of this property is 1024 characters.'
        default: 'unknown'
        type: string
      source:
        description: 'The unique location of the affected system, preferably a hostname or FQDN.'
        default: 'GitHub Actions Prober'
        type: string
      severity:
        description: 'The perceived severity of the status the event is describing with respect to the affected system. This can be "critical", "error", "warning" or "info".'
        default: 'error'
        type: string
      component:
        description: 'Component of the infrastructure that is responsible for the event, for example "rekor" or "fulcio"'
        required: true
        type: string
      group:
        description: 'Logical grouping of components of a service, for example "production" or "staging"'
        required: true
        type: string
      details:
        description: 'Additional details about the event and affected system; specified as a stringified JSON object'
        type: string
      links:
        description: 'Relevant links for the event and affected system; specified as a stringified JSON array of objects of schema {"href":"http://google.com","text":"optional description"}'
        type: string

permissions:
  contents: read

jobs:
  pagerduty-notification:
    timeout-minutes: 10
    name: PagerDuty Notification
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
      - uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v3.3.0
        with:
          go-version: '1.21'
          check-latest: true

      - uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        id: detailsAndLinks
        env:
          DETAILS: ${{ inputs.details }}
          LINKS: ${{ inputs.links }}
        with:
          result-encoding: string
          script: |
            const { DETAILS, LINKS } = process.env;

            let output = ",";
            if (DETAILS !== "") {
              output += '\n  "details": ' + DETAILS;
              if (LINKS !== "") {
                output += ',';
              }
            }
            if (LINKS !== "") {
              output += '\n  "links": ' + LINKS;
            }
            if (output.length == 1) {
              output = "";
            }
            return output;

      - name: Pagerduty Notification
        shell: bash
        env:
          PAGERDUTY_INTEGRATION_KEY: ${{ secrets.PAGERDUTY_INTEGRATION_KEY }}
        run: |
          cd pager-duty
          go run main.go --retry-count ${{ inputs.retries }} <<EOF
          {
            "summary": "${{ inputs.summary }}",
            "source": "${{ inputs.source }}",
            "severity": "${{ inputs.severity }}",
            "component": "${{ inputs.component }}",
            "group": "${{ inputs.group }}"${{ steps.detailsAndLinks.outputs.result }}
          }
          EOF