deploy.sh

#!/bin/bash
#
# Checks Google Cloud container registry to see if build has finished deploying new image from source repository recent update.
# Retries 15 times, waiting 20 seconds between attempts.
#

DEPLOYMENT="$(basename -s .git `git config --get remote.origin.url`)"
PROJECT_ID="$(gcloud config get-value project)"
IMAGE_NAME="gcr.io/$(gcloud config get-value project)/$DEPLOYMENT:$(git rev-parse HEAD)"

function fail {
  echo $1 >&2
  exit 1
}

trap 'fail "The deployment was aborted. Message -- "' ERR

function configure {
  echo "Validating configuration..."
  [ ! -z "$DEPLOYMENT" ] || fail "Configuration option is not set: DEPLOYMENT"
  [ ! -z "$PROJECT_ID" ] || fail "Configuration option is not set: PROJECT_ID"
  [ ! -z "$IMAGE_NAME" ] || fail "Configuration option is not set: IMAGE_NAME"
}

function attempt_build {
  echo "Checking build status for $IMAGE_NAME"
  local n=1
  local max=15
  local delay=20
  while true; do
    gcloud container builds list | grep $IMAGE_NAME | grep -q SUCCESS && break || {
      if [[ $n -lt $max ]]; then
        ((n++))
        echo "Build not completed. Attempt $n/$max:"
        sleep $delay;
      else
        fail "The command has failed after $n attempts."
      fi
    }
  done
}

function set_image {
  echo Container build completed, updating $DEPLOYMENT ...
  kubectl set image deployment/$DEPLOYMENT $DEPLOYMENT=$IMAGE_NAME
}

configure
attempt_build
set_image
echo "$DEPLOYMENT | Deployment complete"