73 lines
2.5 KiB
Bash
73 lines
2.5 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: Apache-2.0
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# (c) 2024, Konstantin Demin
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set -ef
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## shifty-nifty shell goodies :)
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## do same thing as GitLab does for CI_COMMIT_REF_SLUG:
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## 1. lowercase string
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## 2. replace not allowed chars with '-' (squeezing repeats)
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## allowed chars are: `0-9`, `a-z` and '-'
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## 3. remove leading and trailing '-' (if any)
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## 4. truncate string up to 63 chars
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## 5. remove trailing '-' (if any)
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ref_slug() {
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printf '%s' "${1:?}" \
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| sed -Ez 's/^(.+)$/\L\1/;s/[^0-9a-z]+/-/g;s/^-//;s/-$//;s/^(.{1,63}).*$/\1/;s/-$//' \
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| tr -d '\0'
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}
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## normalize image tag
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## performs like ref_slug() except:
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## - symbols '_' and '.' are allowed too
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## - truncate string up to 96 chars
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## - squeeze symbol sequences:
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## - '-' has higher priority than surrounding (leading and trailing) symbols
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## - first symbol in sequence has higher priority than following symbols
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## NB: implementation is rather demonstrative than effective
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image_tag_norm() {
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printf '%s' "${1:?}" \
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| sed -Ez 's/^(.+)$/\L\1/;s/[^0-9a-z_.]+/-/g' \
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| sed -Ez 's/\.+/./g;s/_+/_/g;s/[_.]+-/-/g;s/-[_.]+/-/g;s/([_.])[_.]+/\1/g' \
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| sed -Ez 's/^[_.-]//;s/[_.-]$//;s/^(.{1,95}).*$/\1/;s/[_.-]$//' \
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| tr -d '\0'
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}
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## misc CI things
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# CI_COMMIT_SHORT_SHA="${CI_COMMIT_SHA:0:8}"
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CI_COMMIT_SHORT_SHA=$(printf '%s' "${CI_COMMIT_SHA}" | cut -c 1-8)
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if [ -n "${CI_COMMIT_BRANCH}" ] ; then
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CI_COMMIT_REF_SLUG="${CI_COMMIT_BRANCH}"
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fi
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if [ -n "${CI_COMMIT_SOURCE_BRANCH}" ] ; then
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CI_COMMIT_REF_SLUG="${CI_COMMIT_SOURCE_BRANCH}"
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fi
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if [ -n "${CI_COMMIT_TAG}" ] ; then
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CI_COMMIT_REF_SLUG="${CI_COMMIT_TAG}"
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fi
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CI_COMMIT_REF_SLUG="$(image_tag_norm "${CI_COMMIT_REF_SLUG}")"
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## image tag(s)
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IMAGE_TAG="${CI_COMMIT_SHORT_SHA}-b${CI_PIPELINE_NUMBER}-${CI_COMMIT_REF_SLUG}"
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EXTRA_TAGS=$(image_tag_norm "branch-${CI_COMMIT_BRANCH}")
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if [ -n "${CI_COMMIT_TAG}" ] ; then
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IMAGE_TAG="${CI_COMMIT_SHORT_SHA}"
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EXTRA_TAGS="${CI_COMMIT_REF_SLUG}"
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## TODO: think about "latest" tag: it should be error-prone for "backward tag push"
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# EXTRA_TAGS="${CI_COMMIT_REF_SLUG} latest"
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else
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if [ -n "${CI_COMMIT_SOURCE_BRANCH}" ] ; then
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echo "Running on branch '${CI_COMMIT_SOURCE_BRANCH}'"
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else
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if [ "${CI_COMMIT_BRANCH}" != "${CI_REPO_DEFAULT_BRANCH}" ] ; then
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echo "Running on branch '${CI_COMMIT_BRANCH}'"
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else
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IMAGE_TAG="${CI_COMMIT_SHORT_SHA}"
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fi
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fi
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fi
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IMAGE_TAG=$(image_tag_norm "${IMAGE_TAG}")
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export CI_COMMIT_SHORT_SHA CI_COMMIT_REF_SLUG IMAGE_TAG EXTRA_TAGS
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