mirror of https://github.com/harness/drone.git
120 lines
3.2 KiB
Go
120 lines
3.2 KiB
Go
// Copyright 2023 Harness, Inc.
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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 gitea
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import (
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"context"
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"errors"
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"fmt"
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"os"
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"time"
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"github.com/harness/gitness/cache"
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"github.com/harness/gitness/gitrpc/internal/types"
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gogitosfs "github.com/go-git/go-billy/v5/osfs"
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gogit "github.com/go-git/go-git/v5"
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gogitplumbing "github.com/go-git/go-git/v5/plumbing"
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gogitcache "github.com/go-git/go-git/v5/plumbing/cache"
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gogitobject "github.com/go-git/go-git/v5/plumbing/object"
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gogitfilesystem "github.com/go-git/go-git/v5/storage/filesystem"
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)
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type GoGitRepoProvider struct {
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gitObjectCache cache.Cache[string, *gogitcache.ObjectLRU]
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}
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func NewGoGitRepoProvider(objectCacheMax int, cacheDuration time.Duration) *GoGitRepoProvider {
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c := cache.New[string, *gogitcache.ObjectLRU](gitObjectCacheGetter{
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maxSize: objectCacheMax,
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}, cacheDuration)
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return &GoGitRepoProvider{
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gitObjectCache: c,
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}
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}
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func (gr *GoGitRepoProvider) Get(ctx context.Context, path string) (*gogit.Repository, error) {
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fs := gogitosfs.New(path)
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stat, err := fs.Stat("")
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if err != nil {
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if os.IsNotExist(err) {
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return nil, types.ErrRepositoryNotFound
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}
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return nil, fmt.Errorf("failed to check repository existence: %w", err)
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}
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if !stat.IsDir() {
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return nil, types.ErrRepositoryCorrupted
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}
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gitObjectCache, err := gr.gitObjectCache.Get(ctx, path)
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if err != nil {
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return nil, fmt.Errorf("failed to get repository cache: %w", err)
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}
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s := gogitfilesystem.NewStorage(fs, gitObjectCache)
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repo, err := gogit.Open(s, nil)
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if err != nil {
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return nil, err
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}
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return repo, nil
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}
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type gitObjectCacheGetter struct {
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maxSize int
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}
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func (r gitObjectCacheGetter) Find(_ context.Context, _ string) (*gogitcache.ObjectLRU, error) {
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return gogitcache.NewObjectLRU(gogitcache.FileSize(r.maxSize)), nil
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}
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func (g Adapter) getGoGitCommit(ctx context.Context,
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repoPath string,
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rev string,
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) (*gogit.Repository, *gogitobject.Commit, error) {
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repo, err := g.repoProvider.Get(ctx, repoPath)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to open repository: %w", err)
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}
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var refSHA *gogitplumbing.Hash
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if rev == "" {
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var head *gogitplumbing.Reference
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head, err = repo.Head()
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if err != nil {
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return nil, nil, fmt.Errorf("failed to get head: %w", err)
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}
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headHash := head.Hash()
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refSHA = &headHash
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} else {
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refSHA, err = repo.ResolveRevision(gogitplumbing.Revision(rev))
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if errors.Is(err, gogitplumbing.ErrReferenceNotFound) {
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return nil, nil, types.ErrNotFound
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} else if err != nil {
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return nil, nil, fmt.Errorf("failed to resolve revision %s: %w", rev, err)
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}
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}
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refCommit, err := repo.CommitObject(*refSHA)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to load commit data: %w", err)
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}
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return repo, refCommit, nil
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}
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