README.md

golang-example

This project enable you to build golang application

Inspired by

Golang Docker Official Images

Use multi-stage builds with Golang

A OpenID / Keycloak Proxy service written in golang

Official Golang website: The Go Programming Language

Create the smallest and secured golang docker image based on scratch

Package build

This project get soure code from

• The Go blog:Deploying Go servers with Docker

Possible direction

• https://github.com/icicimov/go-proxy-docker-multiarch/blob/master/Dockerfile

Branch

• keycloak-gatekeeper
  • Create docker image with keycloak-gatekeeper
• go-kit (Failed, do not use)
  • example of using go-kit
    • Install tools from

    • Failed too. go-kit does not seem to support

      • https://github.com/go-kit/kit
      • https://github.com/GrantZheng/kit (A fork from github.com/kujtimiihoxha/kit) (A medium article talk about this )
        • curl https://glide.sh/get | sh (Using A package manager for golang)
        • glide init

  • Failed, unmaintained project gokit-cli

    • go get github.com/kujtimiihoxha/kit (Unmaintain)
    • go get -u google.golang.org/grpc (if you want to utilise generation of gRPC service code)
    • go get -u github.com/golang/protobuf/protoc-gen-go (if you want to utilise generation of gRPC service code)
    • kit generate service users --dmw (--dmw creates default endpoint middleware, logging middleware.)
• gin-and-gorm-rest-api (based on project )
  • Using tableplus, GUI and SQLite3
  • Using sqlite3
  • import mod from local path
  • using go lang viper and godotenv and go env var from medium
  • Need to remove the volume by docker volume ls and docker volume rm <uuid>
  • The Gorm seem faulty, need to add the key words: sslmode:disable, see more info
  • Great help from here
  • Start project
    • go mod init
    • go mod vendor
    • go run main.go
  • Deploy into Kubernetes
    • Kubernetes-container-service-GitLab-sample on IBM
    • golang-example.yaml
    • postgret-deployment.yaml
  • Using go mod download to speed up Golang Docker builds
  • Using Power environment
    • docker network create golang-example
    • docker run -d -e POSTGRES_DB=postgres -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=example --name postgres --network golang-example --mount source=prosgret-vol,destination=/var/lib/postgresql/data -p 5432:5432 postgres:latest
    • docker run -d -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=example -e POSTGRES_DB=postgres -e POSTGRES_HOST=postgres -e POSTGRES_PORT=5432 --network golang-example --name golang-example -p 8080:8080 moxing9876/golang-example:0.0.3
      • example output

      CONTAINER ID        IMAGE                             COMMAND                  CREATED             STATUS              PORTS                    NAMES
      9168b3afde13        moxing9876/golang-example:0.0.3   "/go/bin/hello"          4 seconds ago       Up 3 seconds        0.0.0.0:8080->8080/tcp   golang-example
      6949a79586fb        postgres:latest                   "docker-entrypoint.s…"   6 minutes ago       Up 6 minutes        0.0.0.0:5432->5432/tcp   postgres
      

    • $ curl http://localhost:8080/books
      • example output :

      {"data":[{"id":1,"title":"title1","author":"author1"},{"id":2,"title":"title1","author":"author1"}]}