piotrpersona

  while [[ "${#}" -gt 0 ]]; do
    case "${1}" in
      -i|--inventory) INVENTORY="${2}"; shift 2;;
      -h|--help) display_help; exit 1;;
    esac
  done

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FROM golang@sha256:2b3ca6f02d74eaf6f2d1788a16c1ccf551fe2407cb457636f3826f0108fed8ff AS stage-build

WORKDIR "/go/src/package"

RUN apk update && apk add dep git
COPY Gopkg.* ./
RUN dep ensure --vendor-only
COPY main.go .
RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 \
    go build \

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signalChannel := make(chan os.Signal, 1)
signal.Notify(signalChannel, os.Interrupt)
go func(){
    for sig := range signalChannel {
        // fmt.Println(sig)
    }
}()

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# Git log:
#
# am3xn47 'fixup! Add file B'
# 302mx47 'Add file B'
# xn4273x 'Add file A'

NON_FIXUP_HEAD_COMMIT="$(
  git log --oneline 
  | grep --invert-match 'fixup' 
  | head -1 

piotrpersona

# Origin: https://github.com/engineer-man/youtube/blob/master/058/commands.sh
# 6. Tunnel with ssh (local port 3337 -> remote host's 127.0.0.1 on port 6379)
ssh -L 3337:127.0.0.1:6379 root@emkc.org -N

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GIT_TAG="$( git describe --abbrev=0 )"
GIT_HASH="$( git rev-parse HEAD )"
BUILD_DATE="$( date +%F )"  # Note: An ldflag cannot contain whitespace

REPO="github.com/user/repo"
OUTPUT_NAME="build-artifact"
PACKAGE="main.go"

read -r -d '' LDFLAGS << EOM
  -X ${REPO}/cmd.gitVersionTag=${GIT_TAG}

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docker run \
  -v pypi-cache:/var/lib/nginx/pypi \
  -v $(pwd)/nginx.conf:/etc/nginx/nginx.conf \
  -p 7777:80 \
  nginx

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k8s resources short names

Short name	Full name
csr	certificatesigningrequests
cs	componentstatuses
cm	configmaps
ds	daemonsets
deploy	deployments
ep	endpoints

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spec:
  template:
    metadata:
      labels:
        app.kubernetes.io/name: {{ .Release.Name }}
      annotations:
        configChecksum: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}

piotrpersona

type Spinlock struct {
  state *int32
}

const free = int32(0)

func (l *Spinlock) Lock() {
  for !atomic.CompareAndSwapInt32(l.state, free, 42) { // 42 or any other value but 0
    runtime.Gosched()                                  // Poke the scheduler
  }