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63 lines
1.9 KiB
Bash
63 lines
1.9 KiB
Bash
#!/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: 2022-08-01 14:51:44 +0100 (Mon, 01 Aug 2022)
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#
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# https://github.com/HariSekhon/DevOps-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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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Returns objects of a given type that have the given annotation set, optionally to a given value
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Filtering by label is easy, but when you want to filter by annotation this is trickier
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This script makes it easy to do in the current namespace
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Output:
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<namespace> <name> <annotation>=<value>
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Kubectl needs to be installed in the \$PATH and configured with the right context
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="<object_kind> <annotation> [<value> <kubectl_options>]"
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help_usage "$@"
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min_args 2 "$@"
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kind="$1"
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annotation="$2"
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value="${3:-}"
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shift || :
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shift || :
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shift || :
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annotation_escaped="${annotation//./\\.}"
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value_escaped="${value//\"/\\\"}"
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# can't decompose this line across lines unfortunately for clarity, fails to parse
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if [ -n "$value" ]; then
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kubectl get "$kind" "$@" -o jsonpath="{range .items[?(@.metadata.annotations.$annotation_escaped==\"$value_escaped\")]}{.metadata.namespace}{\"\\t\"}{.metadata.name}{\"\\t$annotation=\"}{.metadata.annotations.$annotation_escaped}{\"\\n\"}" | column -t
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else
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kubectl get "$kind" "$@" -o jsonpath="{range .items[?(@.metadata.annotations.$annotation_escaped)]}{.metadata.namespace}{\"\\t\"}{.metadata.name}{\"\\t$annotation=\"}{.metadata.annotations.$annotation_escaped}{\"\\n\"}" | column -t
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fi
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