140 lines
		
	
	
		
			5.2 KiB
		
	
	
	
		
			Bash
		
	
	
		
			Executable File
		
	
	
			
		
		
	
	
			140 lines
		
	
	
		
			5.2 KiB
		
	
	
	
		
			Bash
		
	
	
		
			Executable File
		
	
	
#!/usr/bin/env bash
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# Copyright 2019 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This script can be used while converting a repo from "dep" to "go mod"
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# by calling it after "go mod init" or to update the Kubernetes packages
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# in a repo that has already been converted. Only packages that are
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# part of kubernetes/kubernetes and thus part of a Kubernetes release
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# are modified. Other k8.io packages (like k8s.io/klog, k8s.io/utils)
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# need to be updated separately.
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set -o pipefail
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cmd=$0
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function help () {
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    cat <<EOF
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$cmd -p <kubernetes version = x.y.z>
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Update all components from kubernetes/kubernetes to that version.
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By default, replace statements are added for all Kubernetes packages,
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whether they are used or not.  This is useful when preparing a
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repository for using k8s.io/kubernetes, because those replace
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statements are needed to avoid "unknown revision v0.0.0" errors
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(https://github.com/kubernetes/kubernetes/issues/79384).
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With the optional -p flag, all unused replace statements are
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pruned. This makes go.mod smaller, but isn't required.
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The replace statements are needed for "go get -u ./..." which
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otherwise ends up updating Kubernetes packages like client-go to
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incompatible versions (in that case, a very old 1.x release which
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happens to have a "higher" version number than the current
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0.<Kubernetes minor version>.<Kubernetes patch version> numbers.
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EOF
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}
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prune=false
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while getopts "ph" o; do
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    case "$o" in
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        h) help; exit 0;;
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        p) prune=true;;
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        *) help; exit 1;;
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    esac
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done
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shift $((OPTIND-1))
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if [ $# -ne 1 ]; then
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    help
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    exit 1
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fi
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die () {
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    echo >&2 "$@"
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    exit 1
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}
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k8s="$1"
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# If the repo imports k8s.io/kubernetes (directly or indirectly), then
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# "go mod" will try to find "v0.0.0" versions because
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# k8s.io/kubernetes has those in it's go.mod file
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# (https://github.com/kubernetes/kubernetes/blob/2bd9643cee5b3b3a5ecbd3af49d09018f0773c77/go.mod#L146-L157).
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# (https://github.com/kubernetes/kubernetes/issues/79384).
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#
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# We need to replicate the replace statements to override those fake
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# versions also in our go.mod file (idea and some code from
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# https://github.com/kubernetes/kubernetes/issues/79384#issuecomment-521493597).
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mods=$( (set -x; curl --silent --show-error --fail "https://raw.githubusercontent.com/kubernetes/kubernetes/v${k8s}/go.mod") |
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          sed -n 's|.*k8s.io/\(.*\) => ./staging/src/k8s.io/.*|k8s.io/\1|p'
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   ) || die "failed to determine Kubernetes staging modules"
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for mod in $mods; do
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    if $prune && ! (env GO111MODULE=on go mod graph) | grep "$mod@" > /dev/null; then
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        echo "Kubernetes module $mod is not used, skipping"
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        # Remove the module from go.mod "replace" that was added by an older version of this script.
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        (set -x;  env GO111MODULE=on go mod edit "-dropreplace=$mod") || die "'go mod edit' failed"
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        continue
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    fi
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    # The presence of a potentially incomplete go.mod file affects this command,
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    # so move elsewhere.
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    modinfo=$(set -x; cd /; env GO111MODULE=on go mod download -json "$mod@kubernetes-${k8s}") ||
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        die "failed to determine version of $mod: $modinfo"
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    v=$(echo "$modinfo" | sed -n 's|.*"Version": "\(.*\)".*|\1|p')
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    (set -x; env GO111MODULE=on go mod edit "-replace=$mod=$mod@$v") || die "'go mod edit' failed"
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done
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packages=
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# Beware that we have to work with packages, not modules (i.e. no -m
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# flag), because some modules trigger a "no Go code except tests"
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# error.  Getting their packages works.
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if ! packages=$( (set -x; env GO111MODULE=on go list all) | grep ^k8s.io/ | sed -e 's; *;;'); then
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    cat >&2 <<EOF
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Warning: "GO111MODULE=on go list all" failed, trying individual packages instead.
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EOF
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    if ! packages=$( (set -x; env GO111MODULE=on go list -f '{{ join .Deps "\n" }}' ./...) | grep ^k8s.io/); then
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        cat >&2 <<EOF
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ERROR: could not obtain package list, both of these commands failed:
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       GO111MODULE=on go list all
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       GO111MODULE=on go list -f '{{ join .Deps "\n" }}' ./pkg/...
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EOF
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        exit 1
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    fi
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fi
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deps=
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for package in $packages; do
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    # Some k8s.io packages do not come from Kubernetes staging and
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    # thus have different versioning (or none at all...). We need to
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    # skip those.  We know what packages are from staging because we
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    # now have "replace" statements for them in go.mod.
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    #
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    # shellcheck disable=SC2001
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    module=$(echo "$package" | sed -e 's;k8s.io/\([^/]*\)/.*;k8s.io/\1;')
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    if grep -q -w "$module *=>" go.mod; then
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        deps="$deps $(echo "$package" | sed -e "s;\$;@kubernetes-$k8s;" -e 's;^k8s.io/kubernetes\(/.*\)@kubernetes-;k8s.io/kubernetes\1@v;')"
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    fi
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done
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# shellcheck disable=SC2086
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(set -x; env GO111MODULE=on go get $deps 2>&1) || die "go get failed"
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echo "SUCCESS"
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