Set of command line tools to work with the google container registry (GCR)

gcr.zsh

#!/bin/bash

# Copyright © 2017 Google Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

function gcrgc {
  if [[ "$#" -ne 2 || "${1}" == '-h' || "${1}" == '--help' ]]; then
    cat >&2 <<"EOF"
gcrgc cleans up tagged or untagged images pushed before specified date
for a given repository (an image name without a tag/digest).

USAGE:
  gcrgc REPOSITORY DATE

EXAMPLE
  gcrgc gcr.io/ahmet/my-app 2017-04-01

  would clean up everything under the gcr.io/ahmet/my-app repository
  pushed before 2017-04-01.
EOF
    return 1
  elif [[ "${#2}" -ne 10 ]]; then
    echo "wrong DATE format; use YYYY-MM-DD." >&2
    return 1
  fi

  local count=0
  local image="${1}"
  local date="${2}"
  for digest in $(gcloud container images list-tags ${image} --limit=999999 --sort-by=TIMESTAMP \
    --filter="timestamp.datetime < '${date}'" --format='get(digest)'); do
    (
      set -x
      gcloud container images delete -q --force-delete-tags "${image}@${digest}"
    )
    let count=count+1
  done
  echo "Deleted ${count} images in ${image}." >&2
}

function gcrgcu {
    if [[ "$#" -ne 1 || "${1}" == '-h' || "${1}" == '--help' ]]; then
    cat >&2 <<"EOF"
gcrgcu cleans up all untagged images for a given registry.

USAGE:
  gcrgcu REGISTRY

EXAMPLE
  gcrgcu gcr.io/my-project-id

  would remove all untagged images from the project registry my-project-id.
EOF
    return 1
  fi

  local repository="${1}"
  for image in $(gcloud container images list --repository="$repository" --limit=999999 --format='get(name)'); do
    for digest in $(gcloud container images list-tags "$image" --limit=999999 --format json | jq -r '.[] | select(.tags == []) | .digest'); do
      echo gcloud container images delete "$image@$digest" -q
      gcloud container images delete "$image@$digest" -q
    done
  done
}

function gcrdu {
  if [[ "$#" -ne 1 || "${1}" == '-h' || "${1}" == '--help' ]]; then
    cat >&2 <<"EOF"
gcrdu returns the total size of a google cloud registry

USAGE:
  gcrdu PROJECT

EXAMPLE
  gcrdu my-project-id

  would return the total allocated size of the gcr.
EOF
    return 1
  fi

  local project="${1}"
  gsutil du -sh "gs://eu.artifacts.${project}.appspot.com"
}