mirror of
https://github.com/kubernetes-sigs/kustomize.git
synced 2026-05-20 13:42:23 +00:00
135 lines
3.1 KiB
Go
135 lines
3.1 KiB
Go
/*
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Copyright 2018 The Kubernetes 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 git
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import (
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"bytes"
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"log"
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"os/exec"
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"github.com/pkg/errors"
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"sigs.k8s.io/kustomize/v3/pkg/fs"
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)
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// Cloner is a function that can clone a git repo.
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type Cloner func(repoSpec *RepoSpec) error
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// ClonerUsingGitExec uses a local git install, as opposed
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// to say, some remote API, to obtain a local clone of
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// a remote repo.
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func ClonerUsingGitExec(repoSpec *RepoSpec) error {
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gitProgram, err := exec.LookPath("git")
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if err != nil {
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return errors.Wrap(err, "no 'git' program on path")
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}
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repoSpec.Dir, err = fs.NewTmpConfirmedDir()
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if err != nil {
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return err
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}
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cmd := exec.Command(
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gitProgram,
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"init",
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repoSpec.Dir.String())
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var out bytes.Buffer
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cmd.Stdout = &out
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cmd.Stderr = &out
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err = cmd.Run()
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if err != nil {
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log.Printf("Error initializing empty git repo: %s", out.String())
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return errors.Wrapf(
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err,
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"trouble initializing empty git repo in %s",
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repoSpec.Dir.String())
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}
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cmd = exec.Command(
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gitProgram,
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"remote",
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"add",
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"origin",
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repoSpec.CloneSpec())
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cmd.Stdout = &out
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cmd.Stderr = &out
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cmd.Dir = repoSpec.Dir.String()
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err = cmd.Run()
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if err != nil {
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log.Printf("Error setting git remote: %s", out.String())
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return errors.Wrapf(
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err,
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"trouble adding remote %s",
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repoSpec.CloneSpec())
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}
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if repoSpec.Ref == "" {
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repoSpec.Ref = "master"
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}
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cmd = exec.Command(
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gitProgram,
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"fetch",
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"--depth=1",
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"origin",
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repoSpec.Ref)
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cmd.Stdout = &out
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cmd.Stderr = &out
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cmd.Dir = repoSpec.Dir.String()
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err = cmd.Run()
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if err != nil {
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log.Printf("Error performing git fetch: %s", out.String())
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return errors.Wrapf(err, "trouble fetching %s", repoSpec.Ref)
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}
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cmd = exec.Command(
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gitProgram,
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"reset",
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"--hard",
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"FETCH_HEAD")
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cmd.Stdout = &out
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cmd.Stderr = &out
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cmd.Dir = repoSpec.Dir.String()
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err = cmd.Run()
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if err != nil {
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log.Printf("Error performing git reset: %s", out.String())
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return errors.Wrapf(
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err, "trouble hard resetting empty repository to %s", repoSpec.Ref)
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}
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cmd = exec.Command(
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gitProgram,
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"submodule",
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"update",
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"--init",
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"--recursive")
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cmd.Stdout = &out
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cmd.Dir = repoSpec.Dir.String()
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err = cmd.Run()
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if err != nil {
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return errors.Wrapf(err, "trouble fetching submodules for %s", repoSpec.Ref)
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}
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return nil
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}
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// DoNothingCloner returns a cloner that only sets
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// cloneDir field in the repoSpec. It's assumed that
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// the cloneDir is associated with some fake filesystem
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// used in a test.
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func DoNothingCloner(dir fs.ConfirmedDir) Cloner {
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return func(rs *RepoSpec) error {
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rs.Dir = dir
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return nil
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}
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}
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