mirror of
https://github.com/go-gitea/gitea
synced 2024-12-21 01:54:18 +01:00
288 lines
8 KiB
Go
288 lines
8 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package git
|
|
|
|
import (
|
|
"path"
|
|
|
|
"github.com/emirpasic/gods/trees/binaryheap"
|
|
"github.com/go-git/go-git/v5/plumbing"
|
|
"github.com/go-git/go-git/v5/plumbing/object"
|
|
cgobject "github.com/go-git/go-git/v5/plumbing/object/commitgraph"
|
|
)
|
|
|
|
// GetCommitsInfo gets information of all commits that are corresponding to these entries
|
|
func (tes Entries) GetCommitsInfo(commit *Commit, treePath string, cache LastCommitCache) ([][]interface{}, *Commit, error) {
|
|
entryPaths := make([]string, len(tes)+1)
|
|
// Get the commit for the treePath itself
|
|
entryPaths[0] = ""
|
|
for i, entry := range tes {
|
|
entryPaths[i+1] = entry.Name()
|
|
}
|
|
|
|
commitNodeIndex, commitGraphFile := commit.repo.CommitNodeIndex()
|
|
if commitGraphFile != nil {
|
|
defer commitGraphFile.Close()
|
|
}
|
|
|
|
c, err := commitNodeIndex.Get(commit.ID)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
var revs map[string]*object.Commit
|
|
if cache != nil {
|
|
var unHitPaths []string
|
|
revs, unHitPaths, err = getLastCommitForPathsByCache(commit.ID.String(), treePath, entryPaths, cache)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if len(unHitPaths) > 0 {
|
|
revs2, err := getLastCommitForPaths(c, treePath, unHitPaths)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
for k, v := range revs2 {
|
|
if err := cache.Put(commit.ID.String(), path.Join(treePath, k), v.ID().String()); err != nil {
|
|
return nil, nil, err
|
|
}
|
|
revs[k] = v
|
|
}
|
|
}
|
|
} else {
|
|
revs, err = getLastCommitForPaths(c, treePath, entryPaths)
|
|
}
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
commit.repo.gogitStorage.Close()
|
|
|
|
commitsInfo := make([][]interface{}, len(tes))
|
|
for i, entry := range tes {
|
|
if rev, ok := revs[entry.Name()]; ok {
|
|
entryCommit := convertCommit(rev)
|
|
if entry.IsSubModule() {
|
|
subModuleURL := ""
|
|
var fullPath string
|
|
if len(treePath) > 0 {
|
|
fullPath = treePath + "/" + entry.Name()
|
|
} else {
|
|
fullPath = entry.Name()
|
|
}
|
|
if subModule, err := commit.GetSubModule(fullPath); err != nil {
|
|
return nil, nil, err
|
|
} else if subModule != nil {
|
|
subModuleURL = subModule.URL
|
|
}
|
|
subModuleFile := NewSubModuleFile(entryCommit, subModuleURL, entry.ID.String())
|
|
commitsInfo[i] = []interface{}{entry, subModuleFile}
|
|
} else {
|
|
commitsInfo[i] = []interface{}{entry, entryCommit}
|
|
}
|
|
} else {
|
|
commitsInfo[i] = []interface{}{entry, nil}
|
|
}
|
|
}
|
|
|
|
// Retrieve the commit for the treePath itself (see above). We basically
|
|
// get it for free during the tree traversal and it's used for listing
|
|
// pages to display information about newest commit for a given path.
|
|
var treeCommit *Commit
|
|
if treePath == "" {
|
|
treeCommit = commit
|
|
} else if rev, ok := revs[""]; ok {
|
|
treeCommit = convertCommit(rev)
|
|
treeCommit.repo = commit.repo
|
|
}
|
|
return commitsInfo, treeCommit, nil
|
|
}
|
|
|
|
type commitAndPaths struct {
|
|
commit cgobject.CommitNode
|
|
// Paths that are still on the branch represented by commit
|
|
paths []string
|
|
// Set of hashes for the paths
|
|
hashes map[string]plumbing.Hash
|
|
}
|
|
|
|
func getCommitTree(c cgobject.CommitNode, treePath string) (*object.Tree, error) {
|
|
tree, err := c.Tree()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Optimize deep traversals by focusing only on the specific tree
|
|
if treePath != "" {
|
|
tree, err = tree.Tree(treePath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return tree, nil
|
|
}
|
|
|
|
func getFileHashes(c cgobject.CommitNode, treePath string, paths []string) (map[string]plumbing.Hash, error) {
|
|
tree, err := getCommitTree(c, treePath)
|
|
if err == object.ErrDirectoryNotFound {
|
|
// The whole tree didn't exist, so return empty map
|
|
return make(map[string]plumbing.Hash), nil
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
hashes := make(map[string]plumbing.Hash)
|
|
for _, path := range paths {
|
|
if path != "" {
|
|
entry, err := tree.FindEntry(path)
|
|
if err == nil {
|
|
hashes[path] = entry.Hash
|
|
}
|
|
} else {
|
|
hashes[path] = tree.Hash
|
|
}
|
|
}
|
|
|
|
return hashes, nil
|
|
}
|
|
|
|
func getLastCommitForPathsByCache(commitID, treePath string, paths []string, cache LastCommitCache) (map[string]*object.Commit, []string, error) {
|
|
var unHitEntryPaths []string
|
|
var results = make(map[string]*object.Commit)
|
|
for _, p := range paths {
|
|
lastCommit, err := cache.Get(commitID, path.Join(treePath, p))
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if lastCommit != nil {
|
|
results[p] = lastCommit
|
|
continue
|
|
}
|
|
|
|
unHitEntryPaths = append(unHitEntryPaths, p)
|
|
}
|
|
|
|
return results, unHitEntryPaths, nil
|
|
}
|
|
|
|
func getLastCommitForPaths(c cgobject.CommitNode, treePath string, paths []string) (map[string]*object.Commit, error) {
|
|
// We do a tree traversal with nodes sorted by commit time
|
|
heap := binaryheap.NewWith(func(a, b interface{}) int {
|
|
if a.(*commitAndPaths).commit.CommitTime().Before(b.(*commitAndPaths).commit.CommitTime()) {
|
|
return 1
|
|
}
|
|
return -1
|
|
})
|
|
|
|
resultNodes := make(map[string]cgobject.CommitNode)
|
|
initialHashes, err := getFileHashes(c, treePath, paths)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Start search from the root commit and with full set of paths
|
|
heap.Push(&commitAndPaths{c, paths, initialHashes})
|
|
|
|
for {
|
|
cIn, ok := heap.Pop()
|
|
if !ok {
|
|
break
|
|
}
|
|
current := cIn.(*commitAndPaths)
|
|
|
|
// Load the parent commits for the one we are currently examining
|
|
numParents := current.commit.NumParents()
|
|
var parents []cgobject.CommitNode
|
|
for i := 0; i < numParents; i++ {
|
|
parent, err := current.commit.ParentNode(i)
|
|
if err != nil {
|
|
break
|
|
}
|
|
parents = append(parents, parent)
|
|
}
|
|
|
|
// Examine the current commit and set of interesting paths
|
|
pathUnchanged := make([]bool, len(current.paths))
|
|
parentHashes := make([]map[string]plumbing.Hash, len(parents))
|
|
for j, parent := range parents {
|
|
parentHashes[j], err = getFileHashes(parent, treePath, current.paths)
|
|
if err != nil {
|
|
break
|
|
}
|
|
|
|
for i, path := range current.paths {
|
|
if parentHashes[j][path] == current.hashes[path] {
|
|
pathUnchanged[i] = true
|
|
}
|
|
}
|
|
}
|
|
|
|
var remainingPaths []string
|
|
for i, path := range current.paths {
|
|
// The results could already contain some newer change for the same path,
|
|
// so don't override that and bail out on the file early.
|
|
if resultNodes[path] == nil {
|
|
if pathUnchanged[i] {
|
|
// The path existed with the same hash in at least one parent so it could
|
|
// not have been changed in this commit directly.
|
|
remainingPaths = append(remainingPaths, path)
|
|
} else {
|
|
// There are few possible cases how can we get here:
|
|
// - The path didn't exist in any parent, so it must have been created by
|
|
// this commit.
|
|
// - The path did exist in the parent commit, but the hash of the file has
|
|
// changed.
|
|
// - We are looking at a merge commit and the hash of the file doesn't
|
|
// match any of the hashes being merged. This is more common for directories,
|
|
// but it can also happen if a file is changed through conflict resolution.
|
|
resultNodes[path] = current.commit
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(remainingPaths) > 0 {
|
|
// Add the parent nodes along with remaining paths to the heap for further
|
|
// processing.
|
|
for j, parent := range parents {
|
|
// Combine remainingPath with paths available on the parent branch
|
|
// and make union of them
|
|
remainingPathsForParent := make([]string, 0, len(remainingPaths))
|
|
newRemainingPaths := make([]string, 0, len(remainingPaths))
|
|
for _, path := range remainingPaths {
|
|
if parentHashes[j][path] == current.hashes[path] {
|
|
remainingPathsForParent = append(remainingPathsForParent, path)
|
|
} else {
|
|
newRemainingPaths = append(newRemainingPaths, path)
|
|
}
|
|
}
|
|
|
|
if remainingPathsForParent != nil {
|
|
heap.Push(&commitAndPaths{parent, remainingPathsForParent, parentHashes[j]})
|
|
}
|
|
|
|
if len(newRemainingPaths) == 0 {
|
|
break
|
|
} else {
|
|
remainingPaths = newRemainingPaths
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Post-processing
|
|
result := make(map[string]*object.Commit)
|
|
for path, commitNode := range resultNodes {
|
|
var err error
|
|
result[path], err = commitNode.Commit()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return result, nil
|
|
}
|