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Merge pull request #1071 from syself/tg/support-images-from-oci-regis…
…tries ✨ download BM images via oci-registry.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| #!/bin/bash | ||
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| # Copyright 2023 The Kubernetes Authors. | ||
| # | ||
| # 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. | ||
|
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| # This scripts gets copied from the controller into the rescue system | ||
| # of the bare-metal machine. | ||
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| set -euo pipefail | ||
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| image="${1:-}" | ||
| outfile="${2:-}" | ||
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| function usage { | ||
| echo "$0 image outfile." | ||
| echo " Download a machine image from a container registry" | ||
| echo " image: for example ghcr.io/foo/bar/my-machine-image:v9" | ||
| echo " outfile: Created file. Usualy with file extensions '.tgz'" | ||
| echo " If the oci registry needs a token, then the script uses OCI_REGISTRY_AUTH_TOKEN (if set)" | ||
| echo " Example of OCI_REGISTRY_AUTH_TOKEN: github:ghp_SN51...." | ||
| echo | ||
| } | ||
| if [ -z "$outfile" ]; then | ||
| usage | ||
| exit 1 | ||
| fi | ||
| OCI_REGISTRY_AUTH_TOKEN="${OCI_REGISTRY_AUTH_TOKEN:-}" # github:$GITHUB_TOKEN | ||
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| # Extract registry | ||
| registry="${image%%/*}" | ||
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| # Extract scope and tag | ||
| remainder="${image#*/}" | ||
| scope="${remainder%:*}" | ||
| tag="${remainder##*:}" | ||
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| if [[ -z "$registry" || -z "$scope" || -z "$tag" ]]; then | ||
| echo "failed to parse registry, scope and tag from image" | ||
| echo "image=$image" | ||
| echo "registry=$registry" | ||
| echo "scope=$scope" | ||
| echo "tag=$tag" | ||
| exit 1 | ||
| fi | ||
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| function download_with_token { | ||
| echo "download with token (OCI_REGISTRY_AUTH_TOKEN set)" | ||
| if [[ "$OCI_REGISTRY_AUTH_TOKEN" != *:* ]]; then | ||
| echo "OCI_REGISTRY_AUTH_TOKEN needs to contain a ':' (user:token)" | ||
| exit 1 | ||
| fi | ||
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| token=$(curl -fsSL -u "$OCI_REGISTRY_AUTH_TOKEN" "https://${registry}/token?scope=repository:$scope:pull" | jq -r '.token') | ||
| if [ -z "$token" ]; then | ||
| echo "Failed to get token for container registry" | ||
| exit 1 | ||
| fi | ||
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| echo "Login to $registry was successful" | ||
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| digest=$(curl -sSL -H "Authorization: Bearer $token" -H "Accept: application/vnd.oci.image.manifest.v1+json" \ | ||
| "https://${registry}/v2/${scope}/manifests/${tag}" | jq -r '.layers[0].digest') | ||
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| if [ -z "$digest" ]; then | ||
| echo "Failed to get digest from container registry" | ||
| exit 1 | ||
| fi | ||
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| echo "Start download of $image" | ||
| curl -fsSL -H "Authorization: Bearer $token" \ | ||
| "https://${registry}/v2/${scope}/blobs/$digest" >"$outfile" | ||
| } | ||
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| function download_without_token { | ||
| echo "download without token (OCI_REGISTRY_AUTH_TOKEN empty)" | ||
| digest=$(curl -sSL -H "Accept: application/vnd.oci.image.manifest.v1+json" \ | ||
| "https://${registry}/v2/${scope}/manifests/${tag}" | jq -r '.layers[0].digest') | ||
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| if [ -z "$digest" ]; then | ||
| echo "Failed to get digest from container registry" | ||
| exit 1 | ||
| fi | ||
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| echo "Start download of $image" | ||
| curl -fsSL "https://${registry}/v2/${scope}/blobs/$digest" >"$outfile" | ||
| } | ||
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| if [ -z "$OCI_REGISTRY_AUTH_TOKEN" ]; then | ||
| download_without_token | ||
| else | ||
| download_with_token | ||
| fi |
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