all repos — homestead @ 52c7a311770809e20c790078ddf27ea4fa10c77e

Code for my website

shared/vcs/repository.go (view raw)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
package vcs

import (
	"errors"
	"os"

	"alin.ovh/homestead/shared/config"
	"alin.ovh/homestead/shared/file"
	"alin.ovh/x/log"

	"github.com/Southclaws/fault"
	"github.com/go-git/go-git/v5"
	"github.com/go-git/go-git/v5/plumbing"
)

type Options struct {
	LocalPath string
	RemoteURL config.URL
	Branch    string
}

type Repository struct {
	repo      *git.Repository
	log       *log.Logger
	remoteURL config.URL
}

func CloneOrOpen(cfg *Options, log *log.Logger) (*Repository, bool, error) {
	var r *git.Repository
	var err error
	exists := file.Exists(cfg.LocalPath)
	if !exists {
		r, err = git.PlainClone(cfg.LocalPath, false, &git.CloneOptions{
			URL:      cfg.RemoteURL.String(),
			Progress: os.Stdout,
		})
	} else {
		r, err = git.PlainOpen(cfg.LocalPath)
	}
	if err != nil {
		return nil, exists, fault.Wrap(err)
	}

	return &Repository{
		log:       log,
		remoteURL: cfg.RemoteURL,
		repo:      r,
	}, exists, nil
}

func (r *Repository) Update(rev string) (bool, error) {
	r.log.Info("updating repository", "from", r.HeadSHA())
	err := r.repo.Fetch(&git.FetchOptions{
		Prune: true,
	})
	if err != nil {
		if errors.Is(err, git.NoErrAlreadyUpToDate) {
			r.log.Info("already up-to-date")

			return true, nil
		}

		return false, fault.Wrap(err)
	}

	rem, err := r.repo.Remote("origin")
	if err != nil {
		return false, fault.Wrap(err)
	}
	refs, err := rem.List(&git.ListOptions{
		Timeout: 5,
	})
	if err != nil {
		return false, fault.Wrap(err)
	}

	var hash plumbing.Hash
	if rev != "" {
		for _, ref := range refs {
			if ref.Name() == plumbing.Main {
				hash = ref.Hash()

				break
			}
		}
	} else {
		hash = plumbing.NewHash(rev)
	}

	wt, err := r.repo.Worktree()
	if err != nil {
		return false, fault.Wrap(err)
	}
	err = wt.Checkout(&git.CheckoutOptions{
		Hash:  hash,
		Force: true,
	})
	if err != nil {
		return false, fault.Wrap(err)
	}

	r.log.Info("updated to", "rev", hash)

	return true, r.Clean(wt)
}

func (r *Repository) Clean(wt *git.Worktree) error {
	st, err := wt.Status()
	if err != nil {
		return fault.Wrap(err)
	}

	if !st.IsClean() {
		err = wt.Clean(&git.CleanOptions{
			Dir: true,
		})
		if err != nil {
			return fault.Wrap(err)
		}
	}

	return nil
}

func (r *Repository) HeadSHA() string {
	head, err := r.repo.Head()
	if err != nil {
		return ""
	}

	return head.Hash().String()
}