added gcr_list_tags_timestamps.sh
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#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-09-15 14:52:47 +0100 (Tue, 15 Sep 2020)
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#
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# https://github.com/HariSekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Lists all tags for the given Google Cloud Registry docker image as well as their image upload timestamp
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Output Format:
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<timestamp> <tag>
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Each timestamp and tag for the given image is output tab separated on a separate line for easy further piping and filtering
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If the image isn't found in GCR, will return nothing and no error code since this is the default GCloud SDK behaviour
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Requires GCloud SDK to be installed and configured
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="<gcr.io>/<project_id>/<image>:<tag>"
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help_usage "$@"
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num_args 1 "$@"
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image="$1"
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regex='^([^\.]+\.)?gcr\.io/[^/]+/[^:]+$'
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if ! [[ "$image" =~ $regex ]]; then
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usage "unrecognized GCR image name - should be in a format matching this regex: $regex"
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fi
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gcloud container images list-tags "$image" --format=json |
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jq -r 'map(.timestamp.datetime + "\t" + .tags[]) | .[]'
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