Build Backend workflow (kiali/kiali)
The Build Backend workflow from kiali/kiali, explained and optimized by Latchkey.
A
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Point runs-on at Latchkey and get job timeouts, self-healing for flaky steps, and up to 58% lower cost, applied automatically.
What it does
This is the Build Backend workflow from the kiali/kiali repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.
Below, Latchkey shows a faster, safer version produced by its optimization engine.
The workflow
workflow (.yml)
name: Build Backend
on:
workflow_call:
inputs:
build_branch:
required: true
type: string
jobs:
build_backend:
name: Build backend binary
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
with:
ref: ${{ inputs.build_branch }}
- name: Set up Go
uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
with:
go-version-file: go.mod
cache: true
cache-dependency-path: go.sum
- name: Download frontend build
uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
with:
name: build
path: frontend/build
- name: Build
run: make -e GO_BUILD_FLAGS=${{ env.GO_BUILD_FLAGS }} -e CGO_ENABLED=${{ env.CGO_ENABLED }} clean build
env:
# Build with -race flag if this is a PR, otherwise it is a release and
# we don't want to build with race detection because of the perf penalty.
GO_BUILD_FLAGS: ${{ github.base_ref && '-race' }}
# The -race flag requires CGO_ENABLED
CGO_ENABLED: ${{ github.base_ref && '1' }}
- name: Upload go binary
uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
with:
name: kiali
path: ~/go/bin/kiali
The same workflow, on Latchkey
Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.
name: Build Backend on: workflow_call: inputs: build_branch: required: true type: string jobs: build_backend: timeout-minutes: 30 name: Build backend binary runs-on: latchkey-small steps: - name: Checkout code uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0 with: ref: ${{ inputs.build_branch }} - name: Set up Go uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0 with: go-version-file: go.mod cache: true cache-dependency-path: go.sum - name: Download frontend build uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1 with: name: build path: frontend/build - name: Build run: make -e GO_BUILD_FLAGS=${{ env.GO_BUILD_FLAGS }} -e CGO_ENABLED=${{ env.CGO_ENABLED }} clean build env: # Build with -race flag if this is a PR, otherwise it is a release and # we don't want to build with race detection because of the perf penalty. GO_BUILD_FLAGS: ${{ github.base_ref && '-race' }} # The -race flag requires CGO_ENABLED CGO_ENABLED: ${{ github.base_ref && '1' }} - name: Upload go binary uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1 with: name: kiali path: ~/go/bin/kiali
What changed
- Run on Latchkey managed runners with one line (
runs-on), which apply the fixes below automatically and self-heal transient failures. This example useslatchkey-small; pick the runner size that fits the job. - Add a job timeout so a hung step cannot burn hours of runner time.
This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.