mirror of
https://github.com/TECHNOFAB11/jsonnet-bundler.git
synced 2025-12-11 23:50:05 +01:00
671f860a19
If the server supports it, fetch a specific revision with --depth 1. Otherwise, fall back to the normal fetch. This replaces the previous "clone" operation. The bandwidth and time savings can be significant depending on the history of the repository (number of commits).
122 lines
2.8 KiB
Go
122 lines
2.8 KiB
Go
// Copyright 2018 jsonnet-bundler authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package pkg
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import (
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"bytes"
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"context"
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"io/ioutil"
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"os"
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"os/exec"
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"path"
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"strings"
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"github.com/jsonnet-bundler/jsonnet-bundler/spec"
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)
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type GitPackage struct {
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Source *spec.GitSource
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}
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func NewGitPackage(source *spec.GitSource) Interface {
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return &GitPackage{
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Source: source,
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}
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}
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func (p *GitPackage) Install(ctx context.Context, dir, version string) (lockVersion string, err error) {
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cmd := exec.CommandContext(ctx, "git", "init")
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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return "", err
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}
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cmd = exec.CommandContext(ctx, "git", "remote", "add", "origin", p.Source.Remote)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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return "", err
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}
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// Attempt shallow fetch at specific revision
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cmd = exec.CommandContext(ctx, "git", "fetch", "--depth", "1", "origin", version)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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// Fall back to normal fetch (all revisions)
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cmd = exec.CommandContext(ctx, "git", "fetch", "origin")
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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return "", err
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}
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}
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// If a Subdir is specificied, a sparsecheckout is sufficient
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if p.Source.Subdir != "" {
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cmd = exec.CommandContext(ctx, "git", "config", "core.sparsecheckout", "true")
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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return "", err
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}
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glob := []byte(p.Source.Subdir + "/*\n")
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ioutil.WriteFile(dir+"/.git/info/sparse-checkout", glob, 0644)
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}
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cmd = exec.CommandContext(ctx, "git", "-c", "advice.detachedHead=false", "checkout", version)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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return "", err
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}
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b := bytes.NewBuffer(nil)
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cmd = exec.CommandContext(ctx, "git", "rev-parse", "HEAD")
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cmd.Stdout = b
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cmd.Dir = dir
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err = cmd.Run()
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if err != nil {
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return "", err
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}
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commitHash := strings.TrimSpace(b.String())
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err = os.RemoveAll(path.Join(dir, ".git"))
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if err != nil {
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return "", err
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}
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return commitHash, nil
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}
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