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8dc7c57f50
This change is about handling the interfaces to public functions for different chart apiVersions. The internals are still focused on v2. This enables v3 to be layered in layer. Signed-off-by: Matt Farina <matt.farina@suse.com>
74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
/*
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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 loader
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import (
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"compress/gzip"
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"errors"
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"fmt"
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"io"
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"os"
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"helm.sh/helm/v4/pkg/chart/loader/archive"
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chart "helm.sh/helm/v4/pkg/chart/v2"
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)
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// FileLoader loads a chart from a file
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type FileLoader string
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// Load loads a chart
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func (l FileLoader) Load() (*chart.Chart, error) {
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return LoadFile(string(l))
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}
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// LoadFile loads from an archive file.
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func LoadFile(name string) (*chart.Chart, error) {
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if fi, err := os.Stat(name); err != nil {
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return nil, err
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} else if fi.IsDir() {
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return nil, errors.New("cannot load a directory")
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}
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raw, err := os.Open(name)
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if err != nil {
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return nil, err
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}
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defer raw.Close()
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err = archive.EnsureArchive(name, raw)
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if err != nil {
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return nil, err
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}
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c, err := LoadArchive(raw)
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if err != nil {
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if err == gzip.ErrHeader {
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return nil, fmt.Errorf("file '%s' does not appear to be a valid chart file (details: %s)", name, err)
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}
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}
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return c, err
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}
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// LoadArchive loads from a reader containing a compressed tar archive.
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func LoadArchive(in io.Reader) (*chart.Chart, error) {
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files, err := archive.LoadArchiveFiles(in)
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if err != nil {
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return nil, err
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}
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return LoadFiles(files)
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}
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