/
deploader.go
156 lines (138 loc) · 4.29 KB
/
deploader.go
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package service
import (
"fmt"
"os"
"github.com/go-git/go-billy/v5"
"github.com/go-git/go-billy/v5/memfs"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/object"
"github.com/go-git/go-git/v5/storage/memory"
"github.com/panshul007/apideps/config"
"github.com/panshul007/apideps/logger"
)
type DepLoader struct {
log logger.GenericLogger
fileOps *FileOps
repoMap map[string]*git.Repository
}
func NewDepLoader(log logger.GenericLogger) *DepLoader {
return &DepLoader{
log: log,
fileOps: NewFileOpsInstance(log),
repoMap: make(map[string]*git.Repository),
}
}
func (d *DepLoader) FetchDeps(deps *config.ApiDependencies) error {
d.log.Infof("Fetching dependencies...")
fs := memfs.New()
for api, dep := range deps.Dependencies {
d.log.Infof("processing %s...", api)
if dep.Repo == "" {
continue
}
repo, err := d.cloneRepo(dep.Repo, fs)
if err != nil {
return fmt.Errorf("error while cloning repo: %s, with error: %w", dep.Repo, err)
}
ref, err := repo.Head()
if err != nil {
return fmt.Errorf("error while fetching head ref of repo: %w", err)
}
fmt.Printf("head ref: %v\n", ref.Hash())
commitRef, err := d.resolveCommitRef(dep, repo)
if err != nil {
return fmt.Errorf("error while resolving commit ref for api: %s, with error: %w", api, err)
}
commit, err := repo.CommitObject(commitRef)
if err != nil {
return fmt.Errorf("could not load commit object of api: %s, for commit: %s, error: %w", api, commitRef.String(), err)
}
tree, err := commit.Tree()
if err != nil {
return fmt.Errorf("could not load tree from commit: %s, error: %w", commitRef.String(), err)
}
//err = d.fileOps.listTreeFiles(tree)
//if err != nil {
// return err
//}
err = d.fileOps.copyFolderPath(tree, dep.RepoFolder, dep.TargetPath)
if err != nil {
return fmt.Errorf("error while copying folder: %w", err)
}
}
return nil
}
func (d *DepLoader) cloneRepo(repoPath string, fs billy.Filesystem) (*git.Repository, error) {
// check if repo is present in cache
repoCache, found := d.repoMap[repoPath]
if found {
return repoCache, nil
}
d.log.Infof("cloning repo: %s", repoPath)
store := memory.NewStorage()
repo, err := git.Clone(store, fs, &git.CloneOptions{
URL: repoPath,
Progress: os.Stdout,
})
if err != nil {
return nil, err
}
// put in cache for reuse
d.repoMap[repoPath] = repo
return repo, nil
}
func (d *DepLoader) resolveCommitRef(dep config.Dependency, repo *git.Repository) (plumbing.Hash, error) {
// check if at-least one of commit hash or tag name is provided
if dep.Tag == "" && dep.Commit == "" {
return plumbing.ZeroHash, fmt.Errorf("no commit ref provided, tag or commit hash required")
}
if dep.Tag != "" {
return d.resolveTag(dep.Tag, repo)
}
return plumbing.NewHash(dep.Commit), nil
}
func (d *DepLoader) resolveTag(tag string, repo *git.Repository) (plumbing.Hash, error) {
ref, err := repo.Tag(tag)
if err != nil {
return plumbing.ZeroHash, fmt.Errorf("could not resolve tag name: %s, with error: %w", tag, err)
}
tagObject, err := repo.TagObject(ref.Hash())
if err != nil {
return plumbing.ZeroHash, fmt.Errorf("could not resolve ref name: %s, of ref hash: %v to tag object with error: %w", tag, ref.Hash(), err)
}
d.log.Infof("resolved tag: %s to commit: %v", tag, tagObject.Target)
return tagObject.Target, nil
}
func (d *DepLoader) listTags(repo *git.Repository) {
tags, err := repo.TagObjects()
if err != nil {
d.log.Errorf("error while getting tag objects: %v", err)
}
err = tags.ForEach(processTag)
if err != nil {
d.log.Errorf("error while iterating tag objects: %v", err)
}
}
func (d *DepLoader) listReferences(repo *git.Repository) error {
refs, err := repo.References()
if err != nil {
return err
}
err = refs.ForEach(func(r *plumbing.Reference) error {
target := ""
if r.Name().IsTag() {
tag, err := d.resolveTag(r.Name().Short(), repo)
if err == nil {
target = tag.String()
}
}
fmt.Printf("ref: %v, name: %s, type: %v, isRefTag: %v, short: %v, target: %v\n", r.String(), r.Name().String(), r.Type(), r.Name().IsTag(), r.Name().Short(), target)
return nil
})
return err
}
func processTag(tag *object.Tag) error {
fmt.Printf("tag: %v, commit: %v, target: %v\n", tag.Name, tag.Hash.String(), tag.Target)
return nil
}