k8s-diff.yaml

name: k8s-diff
on: [pull_request]
jobs:
  base:
    name: Base
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.base.sha }}
      - uses: bazelbuild/setup-bazelisk@v2
      - name: Mount bazel cache
        uses: actions/cache@v3
        with:
          path: "~/.cache/bazel"
          key: bazel
      - name: Build
        run: |
          bazel build \
          --config=ci \
          --remote_header=x-buildbuddy-api-key=${{ secrets.BUILDBUDDY_ORG_API_KEY }} \
          //k8s/unwind:list
      - name: Get output path
        id: get-output-path
        run: echo "PATH=$(bazel cquery --output=files //k8s/unwind:list 2> /dev/null)" >> "$GITHUB_OUTPUT"
      - uses: actions/upload-artifact@v3
        with:
          name: base
          path: "${{ steps.get-output-path.outputs.PATH }}"
  head:
    name: Head
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: bazelbuild/setup-bazelisk@v2
      - name: Mount bazel cache
        uses: actions/cache@v3
        with:
          path: "~/.cache/bazel"
          key: bazel
      - name: Build
        run: |
          bazel build \
          --config=ci \
          --remote_header=x-buildbuddy-api-key=${{ secrets.BUILDBUDDY_ORG_API_KEY }} \
          //k8s/unwind:list
      - name: Get output path
        id: get-output-path
        run: echo "PATH=$(bazel cquery --output=files //k8s/unwind:list 2> /dev/null)" >> "$GITHUB_OUTPUT"
      - uses: actions/upload-artifact@v3
        with:
          name: head
          path: "${{ steps.get-output-path.outputs.PATH }}"
  compare:
    name: Compare
    needs: [base, head]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/download-artifact@v3
      - uses: actions/setup-node@v3
        with:
          node-version: 16
      - run: npm install json-diff
      - name: Comment diff on PR
        uses: actions/github-script@v6
        with:
          script: |
            const { diffString } = require("json-diff")

            const reduce = o => o.items.reduce((acc, v) => ({ [`**${v.metadata.namespace}/${v.metadata.name}** ${v.kind} (${v.apiVersion})`]: v, ...acc, }), {})

            const baseList = require("./base/list.json")
            const headList = require("./head/list.json")

            const base = reduce(baseList)
            const head = reduce(headList)

            const sort = o => Object.fromEntries(Object.entries(o).sort())

            const results = []
            for (const name of new Set([...Object.keys(base), ...Object.keys(head)])) {
              const result = diffString(sort(base[name]), sort(head[name]), {
                outputKeys: ["apiVersion", "kind", "name", "namespace"]
              })
              if (result) {
                results.push({
                  name,
                  result
                })
              }
            }

            if (!results.length) {
              core.warning("no results")
              return
            }

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: results.map(v => {
                const added = v.result.split("\n").filter(line => line.startsWith("+")).length
                const deleted = v.result.split("\n").filter(line => line.startsWith("-")).length
                return `${v.name} \${\\color{green}+${added}}\$ \${\\color{red}-${deleted}}\$

            \`\`\`diff
            ${v.result}
            \`\`\``
              }).join("\n")
            })