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83 lines
1.9 KiB
83 lines
1.9 KiB
/*
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Copyright The Helm Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package getter
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import (
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"bytes"
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"fmt"
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"strings"
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"helm.sh/helm/v3/pkg/registry"
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)
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// OCIGetter is the default HTTP(/S) backend handler
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type OCIGetter struct {
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opts options
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}
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// Get performs a Get from repo.Getter and returns the body.
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func (g *OCIGetter) Get(href string, options ...Option) (*bytes.Buffer, error) {
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for _, opt := range options {
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opt(&g.opts)
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}
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return g.get(href)
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}
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func (g *OCIGetter) get(href string) (*bytes.Buffer, error) {
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client := g.opts.registryClient
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ref := strings.TrimPrefix(href, fmt.Sprintf("%s://", registry.OCIScheme))
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var pullOpts []registry.PullOption
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requestingProv := strings.HasSuffix(ref, ".prov")
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if requestingProv {
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ref = strings.TrimSuffix(ref, ".prov")
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pullOpts = append(pullOpts,
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registry.PullOptWithChart(false),
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registry.PullOptWithProv(true))
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}
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result, err := client.Pull(ref, pullOpts...)
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if err != nil {
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return nil, err
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}
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if requestingProv {
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return bytes.NewBuffer(result.Prov.Data), nil
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}
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return bytes.NewBuffer(result.Chart.Data), nil
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}
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// NewOCIGetter constructs a valid http/https client as a Getter
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func NewOCIGetter(ops ...Option) (Getter, error) {
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registryClient, err := registry.NewClient()
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if err != nil {
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return nil, err
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}
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client := OCIGetter{
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opts: options{
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registryClient: registryClient,
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},
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}
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for _, opt := range ops {
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opt(&client.opts)
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}
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return &client, nil
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}
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