108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
/*
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Copyright 2023 The Flux 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 testutil
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import (
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"io"
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"os"
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"path/filepath"
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"strings"
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sourcev1 "github.com/fluxcd/source-controller/api/v1"
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"github.com/opencontainers/go-digest"
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"helm.sh/helm/v3/pkg/chart"
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"helm.sh/helm/v3/pkg/chartutil"
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v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/rand"
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)
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// SaveChart saves the given chart to the given directory, and returns the
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// path to the saved chart. The chart is saved with a random suffix to avoid
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// name collisions.
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func SaveChart(c *chart.Chart, outDir string) (string, error) {
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tmpDir, err := os.MkdirTemp("", "chart-")
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if err != nil {
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return "", err
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}
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defer os.RemoveAll(tmpDir)
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tmpChart, err := chartutil.Save(c, tmpDir)
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if err != nil {
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return "", err
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}
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var (
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tmpChartFileName = filepath.Base(tmpChart)
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tmpChartExt = filepath.Ext(tmpChartFileName)
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newChartFileName = strings.TrimSuffix(tmpChartFileName, tmpChartExt) + "-" + rand.String(5) + tmpChartExt
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targetPath = filepath.Join(outDir, newChartFileName)
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)
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if err = os.Rename(tmpChart, targetPath); err != nil {
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return "", err
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}
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return targetPath, nil
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}
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// SaveChartAsArtifact saves the given chart to the given directory, and
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// returns an artifact with the chart's metadata. The chart is saved with a
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// random suffix to avoid name collisions.
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func SaveChartAsArtifact(c *chart.Chart, algo digest.Algorithm, baseURL, outDir string) (*sourcev1.Artifact, error) {
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abs, err := SaveChart(c, outDir)
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if err != nil {
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return nil, err
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}
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f, err := os.Open(abs)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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bc := &byteCountReader{Reader: f}
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dig, err := algo.FromReader(bc)
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if err != nil {
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return nil, err
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}
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rel, err := filepath.Rel(outDir, abs)
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if err != nil {
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return nil, err
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}
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fileURL := strings.TrimSuffix(baseURL, "/") + "/" + rel
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return &sourcev1.Artifact{
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Path: abs,
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URL: fileURL,
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Revision: c.Metadata.Version,
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Digest: dig.String(),
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LastUpdateTime: v1.Now(),
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Size: &bc.Count,
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}, nil
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}
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type byteCountReader struct {
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Reader io.Reader
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Count int64
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}
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func (b *byteCountReader) Read(p []byte) (n int, err error) {
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n, err = b.Reader.Read(p)
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b.Count += int64(n)
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return n, err
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}
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