mirror of https://github.com/helm/helm
Merge 16a45a6125 into a4d6c736bc
yxxhero
3 years ago
committed by
GitHub
commit
8d3815020c
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helm
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/*
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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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"strings"
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"fmt"
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"os"
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"path/filepath"
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"github.com/Masterminds/vcs"
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"helm.sh/helm/v3/internal/fileutil"
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)
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// GitGetter is the default HTTP(/S) backend handler
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type GitGetter struct {
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opts options
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}
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func (g *GitGetter) ChartName() string {
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return g.opts.chartName
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}
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// ensureGitDirIgnored will append ".git/" to the .helmignore file in a directory.
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// Create the .helmignore file if it does not exist.
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func (g *GitGetter) ensureGitDirIgnored(repoPath string) error {
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helmignorePath := filepath.Join(repoPath, ".helmignore")
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f, err := os.OpenFile(helmignorePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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if err != nil {
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return err
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}
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defer f.Close()
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if _, err := f.WriteString("\n.git/\n"); err != nil {
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return err
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}
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return nil
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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 *GitGetter) 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 *GitGetter) get(href string) (*bytes.Buffer, error) {
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gitURL := strings.TrimPrefix(href, "git://")
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version := g.opts.version
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chartName := g.opts.chartName
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if version == "" {
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return nil, fmt.Errorf("the version must be a valid tag or branch name for the git repo, not nil")
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}
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tmpDir, err := os.MkdirTemp("", "helm")
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if err != nil {
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return nil, err
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}
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chartTmpDir := filepath.Join(tmpDir, chartName)
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if err := os.MkdirAll(chartTmpDir, 0755); err != nil {
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return nil, err
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}
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defer os.RemoveAll(tmpDir)
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repo, err := vcs.NewRepo(gitURL, chartTmpDir)
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if err != nil {
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return nil, err
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}
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if err := repo.Get(); err != nil {
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return nil, err
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}
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if err := repo.UpdateVersion(version); err != nil {
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return nil, err
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}
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// A .helmignore that includes an ignore for .git/ should be included in the git repo itself,
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// but a lot of people will probably not think about that.
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// To prevent the git history from bleeding into the charts archive, append/create .helmignore.
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g.ensureGitDirIgnored(chartTmpDir)
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buf, err := fileutil.CompressDirToTgz(chartTmpDir, tmpDir)
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if err != nil {
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return nil, fmt.Errorf("unable to tar and compress dir %s to tgz file. %s", tmpDir, err)
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}
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return buf, nil
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}
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// NewGitGetter constructs a valid git client as a Getter
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func NewGitGetter(ops ...Option) (Getter, error) {
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client := GitGetter{}
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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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@ -0,0 +1,31 @@
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/*
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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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"testing"
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)
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func TestNewGITGetter(t *testing.T) {
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g, err := NewGitGetter()
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if err != nil {
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t.Fatal(err)
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}
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if _, ok := g.(*GitGetter); !ok {
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t.Fatal("Expected NewGITGetter to produce an *GITGetter")
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}
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}
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@ -0,0 +1,47 @@
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/*
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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 engine implements the Go text template engine as needed for Helm.
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When Helm renders templates it does so with additional functions and different
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modes (e.g., strict, lint mode). This package handles the helm specific
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implementation.
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*/
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package gitutils
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import (
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"os"
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"github.com/Masterminds/vcs"
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)
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func HasGitReference(gitRepo, ref, repoName string) (bool, error) {
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local, err := os.MkdirTemp("", repoName)
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if err != nil {
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return false, err
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}
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repo, err := vcs.NewRepo(gitRepo, local)
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if err != nil {
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return false, err
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}
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if err := repo.Get(); err != nil {
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return false, err
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}
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defer os.RemoveAll(local)
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return repo.IsReference(ref), nil
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}
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