with pull into storage

internal/services/providers/git.go

@@ -0,0 +1,118 @@
+package providers
+
+import (
+	"context"
+
+	"git.front.kjuulh.io/kjuulh/kraken/internal/services/storage"
+	"github.com/go-git/go-git/v5"
+	"github.com/go-git/go-git/v5/plumbing/transport"
+	"github.com/go-git/go-git/v5/plumbing/transport/http"
+	"github.com/go-git/go-git/v5/plumbing/transport/ssh"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapio"
+)
+
+// Git is a native git provider, it can clone, pull
+// , push and as in abstraction on native git operations
+type Git struct {
+	logger    *zap.Logger
+	gitConfig *GitConfig
+}
+
+type GitRepo struct {
+	repo *git.Repository
+}
+
+type GitAuth string
+
+const (
+	GIT_AUTH_SSH               GitAuth = "ssh"
+	GIT_AUTH_USERNAME_PASSWORD GitAuth = "username_password"
+	GIT_AUTH_ACCESS_TOKEN      GitAuth = "access_token"
+	GIT_AUTH_ANONYMOUS         GitAuth = "anonymous"
+	GIT_AUTH_SSH_AGENT         GitAuth = "ssh_agent"
+)
+
+type GitConfig struct {
+	AuthOption            GitAuth
+	User                  string
+	Password              string
+	AccessToken           string
+	SshPublicKeyFilePath  string
+	SshPrivateKeyPassword string
+}
+
+func NewGit(logger *zap.Logger, gitConfig *GitConfig) *Git {
+	return &Git{logger: logger, gitConfig: gitConfig}
+}
+
+func (g *Git) Clone(ctx context.Context, storageArea *storage.Area, repoUrl string) (*GitRepo, error) {
+	g.logger.Debug(
+		"cloning repository",
+		zap.String("repoUrl", repoUrl),
+		zap.String("path", storageArea.Path),
+	)
+
+	auth, err := g.GetAuth()
+	if err != nil {
+		return nil, err
+	}
+
+	cloneOptions := git.CloneOptions{
+		URL:               repoUrl,
+		Auth:              auth,
+		RemoteName:        "origin",
+		ReferenceName:     "refs/heads/main",
+		SingleBranch:      true,
+		NoCheckout:        false,
+		Depth:             1,
+		RecurseSubmodules: 1,
+		Progress: &zapio.Writer{
+			Log:   g.logger.With(zap.String("process", "go-git")),
+			Level: zap.DebugLevel,
+		},
+		Tags:            0,
+		InsecureSkipTLS: false,
+		CABundle:        []byte{},
+	}
+
+	repo, err := git.PlainCloneContext(ctx, storageArea.Path, false, &cloneOptions)
+	if err != nil {
+		return nil, err
+	}
+
+	g.logger.Debug("done cloning repo")
+
+	return &GitRepo{repo: repo}, nil
+}
+
+func (g *Git) GetAuth() (transport.AuthMethod, error) {
+	switch g.gitConfig.AuthOption {
+	case GIT_AUTH_SSH:
+		sshKey, err := ssh.NewPublicKeysFromFile(
+			g.gitConfig.User,
+			g.gitConfig.SshPublicKeyFilePath,
+			g.gitConfig.SshPrivateKeyPassword,
+		)
+		if err != nil {
+			return nil, err
+		}
+		return sshKey, nil
+	case GIT_AUTH_USERNAME_PASSWORD:
+		return &http.BasicAuth{
+			Username: g.gitConfig.User,
+			Password: g.gitConfig.Password,
+		}, nil
+	case GIT_AUTH_ACCESS_TOKEN:
+		return &http.BasicAuth{
+			Username: "required-username",
+			Password: g.gitConfig.AccessToken,
+		}, nil
+	case GIT_AUTH_ANONYMOUS:
+		return nil, nil
+	case GIT_AUTH_SSH_AGENT:
+		return ssh.NewSSHAgentAuth(g.gitConfig.User)
+	default:
+		return nil, nil
+	}
+}