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Initial implementation (#1)
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‎.dockerignore‎

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.git
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.idea
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*.iml
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.editorconfig
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build-harness
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.build-harness

‎.editorconfig‎

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# Override for Makefile
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[{Makefile, makefile, GNUmakefile}]
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indent_style = tab
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indent_size = 4
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[Makefile.*]
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indent_style = tab
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indent_size = 4
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[*.yaml]
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indent_style = spaces
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indent_size = 2

‎.gitignore‎

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release/*
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.build-harness
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build-harness/
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.idea
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*.iml

‎Dockerfile‎

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FROM golang:alpine3.8 AS builder
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# Copy source into builder
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ADD . /src
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# Build the app
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RUN cd /src && \
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go build -o example-app
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# Build the final image
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FROM alpine:3.8 as final
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# Install the cloudposse alpine repository
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ADD https://apk.cloudposse.com/ops@cloudposse.com.rsa.pub /etc/apk/keys/
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RUN echo "@cloudposse https://apk.cloudposse.com/3.8/vendor" >> /etc/apk/repositories
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RUN apk add --update bash variant@cloudposse
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# Expose port of the app
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EXPOSE 8080
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# Set the runtime working directory
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WORKDIR /app
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# Copy the helmfile deployment configuration
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COPY deploy/ /deploy/
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COPY public/ /app/public/
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# Install the app
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COPY --from=builder /src/example-app /app/
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# Define the entrypoint
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ENTRYPOINT ["./example-app"]

‎Makefile‎

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DOCKER_IMAGE_NAME ?= example-app
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SHELL = /bin/bash
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PATH:=$(PATH):$(GOPATH)/bin
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-include $(shell curl -sSL -o .build-harness "https://git.io/build-harness"; echo .build-harness)
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build: go/build
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@exit 0
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run:
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docker run -it -p 8080:8080 --rm $(DOCKER_IMAGE_NAME)

‎README.md‎

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# example-app
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Example application for CI/CD demonstrations
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Example application for Codefresh CI/CD demonstrations.
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Contact <hello@cloudposse.com>

‎codefresh/build.yaml‎

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version: '1.0'
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stages:
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- Prepare
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- Build
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- Push
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steps:
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main_clone:
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title: "Clone repository"
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type: git-clone
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stage: Prepare
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description: "Initialize"
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repo: ${{CF_REPO_OWNER}}/${{CF_REPO_NAME}}
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git: CF-default
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revision: ${{CF_REVISION}}
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build_image:
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title: Build image
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stage: Build
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type: build
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description: Build image
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image_name: ${{CF_REPO_NAME}}
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dockerfile: Dockerfile
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push_image_commit:
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title: Push image with commit tag
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stage: Push
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type: push
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candidate: ${{build_image}}
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tags:
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- "${{CF_REVISION}}"

‎codefresh/deploy.yaml‎

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version: '1.0'
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stages:
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- Prepare
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- Deploy
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steps:
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main_clone:
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title: "Create Context"
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stage: Prepare
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image: alpine
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commands:
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- cf_export NAMESPACE=${{STAGE}}
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- cf_export IMAGE_NAME=${{CF_DOCKER_REPO_URL}}/${{CF_REPO_NAME}}
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- cf_export IMAGE_TAG=${{CF_RELEASE_TAG}}
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set_github_deployment_status_to_pending:
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title: Set GitHub deployment status to "pending"
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stage: Deploy
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image: cloudposse/github-status-updater
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environment:
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- GITHUB_ACTION=update_state
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- GITHUB_TOKEN=${{GITHUB_TOKEN}}
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- GITHUB_OWNER=${{CF_REPO_OWNER}}
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- GITHUB_REPO=${{CF_REPO_NAME}}
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- GITHUB_REF=${{CF_REVISION}}
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- GITHUB_CONTEXT=${{STAGE}}-environment
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- GITHUB_STATE=pending
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- GITHUB_DESCRIPTION=Deploying changes to ${{NAMESPACE}} namespace
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- GITHUB_TARGET_URL=${{ATLANTIS_ATLANTIS_URL}}
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when:
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condition:
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all:
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githubNotificationsEnabled: "'${{GITHUB_NOTIFICATIONS_ENABLED}}' == 'true'"
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deploy_helmfile:
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title: "Deploy with helmfile"
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stage: "Deploy"
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image: "${{CF_DOCKER_REPO_URL}}/${{CF_REPO_NAME}}:${{CF_REVISION}}"
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working_directory: /deploy/
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commands:
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# Announce the release version
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- "echo 'Preparing to deploy version ${{CF_RELEASE_TAG}}'"
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# Fetch the build-harness
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- "curl -sSL -o Makefile https://git.io/build-harness"
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# Initialize the build-harness
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- "make init"
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# Install or upgrade tiller
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- "make helm/toolbox/upsert"
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# Deploy chart to cluster using helmfile
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- "helmfile --namespace ${{NAMESPACE}} --selector color=blue sync"
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set_github_deployment_status_to_success:
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title: Set GitHub deployment status to "success"
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stage: "Deploy"
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image: cloudposse/github-status-updater
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environment:
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- GITHUB_ACTION=update_state
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- GITHUB_TOKEN=${{GITHUB_TOKEN}}
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- GITHUB_OWNER=${{CF_REPO_OWNER}}
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- GITHUB_REPO=${{CF_REPO_NAME}}
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- GITHUB_REF=${{CF_REVISION}}
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- GITHUB_CONTEXT=${{STAGE}}-environment
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- GITHUB_STATE=success
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- GITHUB_DESCRIPTION=Deployed to ${{NAMESPACE}} namespace
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- GITHUB_TARGET_URL=${{ATLANTIS_ATLANTIS_URL}}
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when:
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condition:
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all:
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githubNotificationsEnabled: "'${{GITHUB_NOTIFICATIONS_ENABLED}}' == 'true'"

‎codefresh/release.yaml‎

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version: '1.0'
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stages:
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- Prepare
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- Promote
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- Deploy
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steps:
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main_clone:
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title: "Create Context"
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stage: "Prepare"
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image: alpine
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commands:
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# Extract the postfix of a semver (e.g. 0.0.0-stage => stage)
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- cf_export STAGE=$(echo ${{CF_RELEASE_TAG}} | sed -E 's/^[^-]+-?//')
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pull_image_sha:
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title: Pull image with commit sha
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stage: "Promote"
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image: "${{CF_DOCKER_REPO_URL}}/${{CF_REPO_NAME}}:${{CF_REVISION}}"
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commands:
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- "true"
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push_image_tag:
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title: Push image with release tag
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stage: "Promote"
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type: push
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image_name: ${{CF_REPO_NAME}}
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candidate: "${{CF_DOCKER_REPO_URL}}/${{CF_REPO_NAME}}:${{CF_REVISION}}"
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tags:
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- "${{CF_RELEASE_TAG}}"
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deploy:
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title: Deploy Release
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stage: "Deploy"
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image: 'codefresh/cli:latest'
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commands:
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- codefresh run ${{CF_REPO_OWNER}}/${{CF_REPO_NAME}}/deploy-${{STAGE}} -d -b=${{CF_BRANCH}} -v CF_RELEASE_TAG=${{CF_RELEASE_TAG}} -v CF_PRERELEASE_FLAG=${{CF_PRERELEASE_FLAG}} -v STAGE=${{STAGE}}
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when:
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condition:
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all:
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stageDefined: "'${{STAGE}}' != ''"

‎deploy/ctl‎

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#!/usr/bin/env variant
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# vim:set ft=yaml
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parameters:
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- name: config
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default: .color
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description: "Config file that keeps track of the current color"
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- name: namespace
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default: "default"
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description: "Kubernetes namespace"
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tasks:
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# https://istio.io/docs/tasks/traffic-management/ingress/#determining-the-ingress-ip-and-ports-when-using-an-external-load-balancer
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istio-ingress:
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description: Output the FQHN of the Istio Ingress Gateway
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script: |
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kubectl --namespace istio-system get service istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].hostname}'
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# https://istio.io/docs/setup/kubernetes/quick-start/
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istio-injection:
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description: Enable Istio Sidecar Injection for a namespace
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script: |
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kubectl label namespace {{ get "namespace" }} istio-injection=enabled --overwrite=true
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use-context:
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description: "Configure kube-context"
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script: |
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kubectl config use-context ${KUBE_CONTEXT}
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deps:
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description: "Install alpine dependencies"
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script: |
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! which apk >/dev/null || apk add --update curl make bash git kubectl@cloudposse helm@cloudposse helmfile@cloudposse
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helm init --client-only
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color:
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description: "Lookup the current color"
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script: |
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config=${CF_VOLUME_PATH:-.}/{{ get "config" }}
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if [ -f ${config} ]; then
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cat ${config}
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else
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echo "blue" | tee ${config}
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fi
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blue-green:
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description: "Trigger a blue-green deployment"
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parameters:
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- name: color
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type: string
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description: "Selected color to deploy"
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- name: blue
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type: string
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default: green
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description: "Flip blue color to this color"
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- name: green
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type: string
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default: blue
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description: "Flip green color to this color"
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steps:
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- task: deps
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- task: use-context
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- task: istio-injection
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- script: |
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config=${CF_VOLUME_PATH:-.}/{{ get "config" }}
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cur_color={{ get "color" }}
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new_color={{ get "color" | get }}
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echo "Config file is ${config}"
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echo "Updating [${KUBE_CONTEXT}] context {{ get "namespace" }} namespace: $cur_color => $new_color"
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export COLOR=$new_color
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# Deploy the app and update istio virtual service
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helmfile --namespace {{ get "namespace" }} sync
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echo "$new_color" > ${config}

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