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helpers.go
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/
helpers.go
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/*
Copyright AppsCode Inc. and Contributors
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.
*/
package shared
import (
"bytes"
"fmt"
"strings"
"sync"
"text/template"
kmapi "kmodules.xyz/client-go/api/v1"
"kmodules.xyz/go-containerregistry/name"
"github.com/Masterminds/sprig/v3"
"github.com/pkg/errors"
)
const (
GraphQueryVarSource = "src"
GraphQueryVarTargetGroup = "targetGroup"
GraphQueryVarTargetKind = "targetKind"
)
var pool = sync.Pool{
New: func() interface{} {
return new(bytes.Buffer)
},
}
func (r ResourceLocator) GraphQuery(oid kmapi.OID) (string, map[string]interface{}, error) {
if r.Query.Type == GraphQLQuery {
vars := map[string]interface{}{
GraphQueryVarSource: string(oid),
GraphQueryVarTargetGroup: r.Ref.Group,
GraphQueryVarTargetKind: r.Ref.Kind,
}
if r.Query.Raw != "" {
return r.Query.Raw, vars, nil
}
return fmt.Sprintf(`query Find($src: String!, $targetGroup: String!, $targetKind: String!) {
find(oid: $src) {
refs: %s(group: $targetGroup, kind: $targetKind) {
namespace
name
}
}
}`, r.Query.ByLabel), vars, nil
} else if r.Query.Type == RESTQuery {
if r.Query.Raw == "" || !strings.Contains(r.Query.Raw, "{{") {
return r.Query.Raw, nil, nil
}
tpl, err := template.New("").Funcs(sprig.TxtFuncMap()).Parse(r.Query.Raw)
if err != nil {
return "", nil, errors.Wrap(err, "failed to parse raw query")
}
// Do nothing and continue execution.
// If printed, the result of the index operation is the string "<no value>".
// We mitigate that later.
tpl.Option("missingkey=default")
objID, err := kmapi.ObjectIDMap(oid)
if err != nil {
return "", nil, errors.Wrapf(err, "failed to parse oid=%s", oid)
}
buf := pool.Get().(*bytes.Buffer)
defer pool.Put(buf)
buf.Reset()
err = tpl.Execute(buf, objID)
if err != nil {
return "", nil, errors.Wrap(err, "failed to resolve template")
}
return buf.String(), nil, nil
}
return "", nil, fmt.Errorf("unknown query type %+v, oid %s", r, oid)
}
func (r ImageRegistrySpec) DockerHubProxy() string {
addr := r.Proxies.DockerHub
addr = strings.TrimSpace(addr)
addr = strings.TrimSuffix(addr, "/")
return addr
}
func (r ImageRegistrySpec) DockerLibraryProxy() string {
addr := r.Proxies.DockerLibrary
if addr == "" {
addr = r.Proxies.DockerHub
}
addr = strings.TrimSpace(addr)
addr = strings.TrimSuffix(addr, "/")
return addr
}
func (r ImageRegistrySpec) GHCRProxy() string {
addr := r.Proxies.GHCR
addr = strings.TrimSpace(addr)
addr = strings.TrimSuffix(addr, "/")
return addr
}
func (r ImageRegistrySpec) QuayProxy() string {
addr := r.Proxies.Quay
addr = strings.TrimSpace(addr)
addr = strings.TrimSuffix(addr, "/")
return addr
}
func (r ImageRegistrySpec) KubernetesRegistryProxy() string {
addr := r.Proxies.Kubernetes
addr = strings.TrimSpace(addr)
addr = strings.TrimSuffix(addr, "/")
return addr
}
func (r ImageRegistrySpec) AppsCodeRegistryProxy() string {
addr := r.Proxies.AppsCode
addr = strings.TrimSpace(addr)
addr = strings.TrimSuffix(addr, "/")
return addr
}
const defaultTag = "latest"
func NewRef(spec ImageRegistrySpec, img string) (string, error) {
ref, err := name.ParseReference(img)
if err != nil {
return "", err
}
// https://github.com/kmodules/go-containerregistry/blob/master/name/lib_test.go
switch ref.Registry {
case "index.docker.io":
var result string
_, bin, found := strings.Cut(ref.Repository, "library/")
if found {
addr := spec.DockerLibraryProxy()
if addr != "" {
result = addr + "/" + bin
} else {
result = bin
}
} else {
addr := spec.DockerHubProxy()
if addr != "" {
result = addr + "/" + ref.Repository
} else {
result = ref.Repository
}
}
if ref.Tag != "" && ref.Tag != defaultTag {
result += ":" + ref.Tag
}
return result, nil
case "ghcr.io":
result := spec.GHCRProxy() + "/" + ref.Repository
if ref.Tag != "" && ref.Tag != defaultTag {
result += ":" + ref.Tag
}
return result, nil
case "quay.io":
result := spec.QuayProxy() + "/" + ref.Repository
if ref.Tag != "" && ref.Tag != defaultTag {
result += ":" + ref.Tag
}
return result, nil
case "registry.k8s.io":
result := spec.KubernetesRegistryProxy() + "/" + ref.Repository
if ref.Tag != "" && ref.Tag != defaultTag {
result += ":" + ref.Tag
}
return result, nil
case "r.appscode.com":
result := spec.AppsCodeRegistryProxy() + "/" + ref.Repository
if ref.Tag != "" && ref.Tag != defaultTag {
result += ":" + ref.Tag
}
return result, nil
}
return "", fmt.Errorf("registry not support for image %s", img)
}
func MustNewRef(spec ImageRegistrySpec, img string) string {
out, err := NewRef(spec, img)
if err != nil {
panic(err)
}
return out
}