53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
/*
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Copyright 2020 The Flux CD contributors.
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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 helm
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import (
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"fmt"
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"io"
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"os"
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"path"
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"helm.sh/helm/v3/pkg/chartutil"
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)
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// OverwriteChartDefaultValues overwrites the chart default values file in the
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// given chartPath with the contents of the given valuesFile.
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func OverwriteChartDefaultValues(chartPath, valuesFile string) error {
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if valuesFile == chartutil.ValuesfileName {
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return nil
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}
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srcPath := path.Join(chartPath, valuesFile)
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if f, err := os.Stat(srcPath); os.IsNotExist(err) || !f.Mode().IsRegular() {
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return fmt.Errorf("invalid values file path: %s", valuesFile)
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}
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src, err := os.Open(srcPath)
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if err != nil {
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return fmt.Errorf("failed to open values file '%s': %w", valuesFile, err)
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}
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defer src.Close()
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t, err := os.OpenFile(path.Join(chartPath, chartutil.ValuesfileName), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
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if err != nil {
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return fmt.Errorf("failed to open values file '%s': %w", chartutil.ValuesfileName, err)
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}
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defer t.Close()
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if _, err := io.Copy(t, src); err != nil {
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return fmt.Errorf("failed to overwrite default values with '%s': %w", valuesFile, err)
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}
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return nil
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}
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