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forgejo/services/migrations/gitea_downloader.go
flynnnnnnnnnn e81ccc406b
Implement FSFE REUSE for golang files (#21840)
Change all license headers to comply with REUSE specification.

Fix #16132

Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
2022-11-27 18:20:29 +00:00

704 lines
19 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package migrations
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strings"
"time"
"code.gitea.io/gitea/modules/log"
base "code.gitea.io/gitea/modules/migration"
"code.gitea.io/gitea/modules/structs"
gitea_sdk "code.gitea.io/sdk/gitea"
)
var (
_ base.Downloader = &GiteaDownloader{}
_ base.DownloaderFactory = &GiteaDownloaderFactory{}
)
func init() {
RegisterDownloaderFactory(&GiteaDownloaderFactory{})
}
// GiteaDownloaderFactory defines a gitea downloader factory
type GiteaDownloaderFactory struct{}
// New returns a Downloader related to this factory according MigrateOptions
func (f *GiteaDownloaderFactory) New(ctx context.Context, opts base.MigrateOptions) (base.Downloader, error) {
u, err := url.Parse(opts.CloneAddr)
if err != nil {
return nil, err
}
baseURL := u.Scheme + "://" + u.Host
repoNameSpace := strings.TrimPrefix(u.Path, "/")
repoNameSpace = strings.TrimSuffix(repoNameSpace, ".git")
path := strings.Split(repoNameSpace, "/")
if len(path) < 2 {
return nil, fmt.Errorf("invalid path: %s", repoNameSpace)
}
repoPath := strings.Join(path[len(path)-2:], "/")
if len(path) > 2 {
subPath := strings.Join(path[:len(path)-2], "/")
baseURL += "/" + subPath
}
log.Trace("Create gitea downloader. BaseURL: %s RepoName: %s", baseURL, repoNameSpace)
return NewGiteaDownloader(ctx, baseURL, repoPath, opts.AuthUsername, opts.AuthPassword, opts.AuthToken)
}
// GitServiceType returns the type of git service
func (f *GiteaDownloaderFactory) GitServiceType() structs.GitServiceType {
return structs.GiteaService
}
// GiteaDownloader implements a Downloader interface to get repository information's
type GiteaDownloader struct {
base.NullDownloader
ctx context.Context
client *gitea_sdk.Client
baseURL string
repoOwner string
repoName string
pagination bool
maxPerPage int
}
// NewGiteaDownloader creates a gitea Downloader via gitea API
//
// Use either a username/password or personal token. token is preferred
// Note: Public access only allows very basic access
func NewGiteaDownloader(ctx context.Context, baseURL, repoPath, username, password, token string) (*GiteaDownloader, error) {
giteaClient, err := gitea_sdk.NewClient(
baseURL,
gitea_sdk.SetToken(token),
gitea_sdk.SetBasicAuth(username, password),
gitea_sdk.SetContext(ctx),
gitea_sdk.SetHTTPClient(NewMigrationHTTPClient()),
)
if err != nil {
log.Error(fmt.Sprintf("Failed to create NewGiteaDownloader for: %s. Error: %v", baseURL, err))
return nil, err
}
path := strings.Split(repoPath, "/")
paginationSupport := true
if err = giteaClient.CheckServerVersionConstraint(">=1.12"); err != nil {
paginationSupport = false
}
// set small maxPerPage since we can only guess
// (default would be 50 but this can differ)
maxPerPage := 10
// gitea instances >=1.13 can tell us what maximum they have
apiConf, _, err := giteaClient.GetGlobalAPISettings()
if err != nil {
log.Info("Unable to get global API settings. Ignoring these.")
log.Debug("giteaClient.GetGlobalAPISettings. Error: %v", err)
}
if apiConf != nil {
maxPerPage = apiConf.MaxResponseItems
}
return &GiteaDownloader{
ctx: ctx,
client: giteaClient,
baseURL: baseURL,
repoOwner: path[0],
repoName: path[1],
pagination: paginationSupport,
maxPerPage: maxPerPage,
}, nil
}
// SetContext set context
func (g *GiteaDownloader) SetContext(ctx context.Context) {
g.ctx = ctx
}
// String implements Stringer
func (g *GiteaDownloader) String() string {
return fmt.Sprintf("migration from gitea server %s %s/%s", g.baseURL, g.repoOwner, g.repoName)
}
// ColorFormat provides a basic color format for a GiteaDownloader
func (g *GiteaDownloader) ColorFormat(s fmt.State) {
if g == nil {
log.ColorFprintf(s, "<nil: GiteaDownloader>")
return
}
log.ColorFprintf(s, "migration from gitea server %s %s/%s", g.baseURL, g.repoOwner, g.repoName)
}
// GetRepoInfo returns a repository information
func (g *GiteaDownloader) GetRepoInfo() (*base.Repository, error) {
if g == nil {
return nil, errors.New("error: GiteaDownloader is nil")
}
repo, _, err := g.client.GetRepo(g.repoOwner, g.repoName)
if err != nil {
return nil, err
}
return &base.Repository{
Name: repo.Name,
Owner: repo.Owner.UserName,
IsPrivate: repo.Private,
Description: repo.Description,
CloneURL: repo.CloneURL,
OriginalURL: repo.HTMLURL,
DefaultBranch: repo.DefaultBranch,
}, nil
}
// GetTopics return gitea topics
func (g *GiteaDownloader) GetTopics() ([]string, error) {
topics, _, err := g.client.ListRepoTopics(g.repoOwner, g.repoName, gitea_sdk.ListRepoTopicsOptions{})
return topics, err
}
// GetMilestones returns milestones
func (g *GiteaDownloader) GetMilestones() ([]*base.Milestone, error) {
milestones := make([]*base.Milestone, 0, g.maxPerPage)
for i := 1; ; i++ {
// make sure gitea can shutdown gracefully
select {
case <-g.ctx.Done():
return nil, nil
default:
}
ms, _, err := g.client.ListRepoMilestones(g.repoOwner, g.repoName, gitea_sdk.ListMilestoneOption{
ListOptions: gitea_sdk.ListOptions{
PageSize: g.maxPerPage,
Page: i,
},
State: gitea_sdk.StateAll,
})
if err != nil {
return nil, err
}
for i := range ms {
// old gitea instances dont have this information
createdAT := time.Time{}
var updatedAT *time.Time
if ms[i].Closed != nil {
createdAT = *ms[i].Closed
updatedAT = ms[i].Closed
}
// new gitea instances (>=1.13) do
if !ms[i].Created.IsZero() {
createdAT = ms[i].Created
}
if ms[i].Updated != nil && !ms[i].Updated.IsZero() {
updatedAT = ms[i].Updated
}
milestones = append(milestones, &base.Milestone{
Title: ms[i].Title,
Description: ms[i].Description,
Deadline: ms[i].Deadline,
Created: createdAT,
Updated: updatedAT,
Closed: ms[i].Closed,
State: string(ms[i].State),
})
}
if !g.pagination || len(ms) < g.maxPerPage {
break
}
}
return milestones, nil
}
func (g *GiteaDownloader) convertGiteaLabel(label *gitea_sdk.Label) *base.Label {
return &base.Label{
Name: label.Name,
Color: label.Color,
Description: label.Description,
}
}
// GetLabels returns labels
func (g *GiteaDownloader) GetLabels() ([]*base.Label, error) {
labels := make([]*base.Label, 0, g.maxPerPage)
for i := 1; ; i++ {
// make sure gitea can shutdown gracefully
select {
case <-g.ctx.Done():
return nil, nil
default:
}
ls, _, err := g.client.ListRepoLabels(g.repoOwner, g.repoName, gitea_sdk.ListLabelsOptions{ListOptions: gitea_sdk.ListOptions{
PageSize: g.maxPerPage,
Page: i,
}})
if err != nil {
return nil, err
}
for i := range ls {
labels = append(labels, g.convertGiteaLabel(ls[i]))
}
if !g.pagination || len(ls) < g.maxPerPage {
break
}
}
return labels, nil
}
func (g *GiteaDownloader) convertGiteaRelease(rel *gitea_sdk.Release) *base.Release {
r := &base.Release{
TagName: rel.TagName,
TargetCommitish: rel.Target,
Name: rel.Title,
Body: rel.Note,
Draft: rel.IsDraft,
Prerelease: rel.IsPrerelease,
PublisherID: rel.Publisher.ID,
PublisherName: rel.Publisher.UserName,
PublisherEmail: rel.Publisher.Email,
Published: rel.PublishedAt,
Created: rel.CreatedAt,
}
httpClient := NewMigrationHTTPClient()
for _, asset := range rel.Attachments {
size := int(asset.Size)
dlCount := int(asset.DownloadCount)
r.Assets = append(r.Assets, &base.ReleaseAsset{
ID: asset.ID,
Name: asset.Name,
Size: &size,
DownloadCount: &dlCount,
Created: asset.Created,
DownloadURL: &asset.DownloadURL,
DownloadFunc: func() (io.ReadCloser, error) {
asset, _, err := g.client.GetReleaseAttachment(g.repoOwner, g.repoName, rel.ID, asset.ID)
if err != nil {
return nil, err
}
if !hasBaseURL(asset.DownloadURL, g.baseURL) {
WarnAndNotice("Unexpected AssetURL for assetID[%d] in %s: %s", asset.ID, g, asset.DownloadURL)
return io.NopCloser(strings.NewReader(asset.DownloadURL)), nil
}
// FIXME: for a private download?
req, err := http.NewRequest("GET", asset.DownloadURL, nil)
if err != nil {
return nil, err
}
resp, err := httpClient.Do(req)
if err != nil {
return nil, err
}
// resp.Body is closed by the uploader
return resp.Body, nil
},
})
}
return r
}
// GetReleases returns releases
func (g *GiteaDownloader) GetReleases() ([]*base.Release, error) {
releases := make([]*base.Release, 0, g.maxPerPage)
for i := 1; ; i++ {
// make sure gitea can shutdown gracefully
select {
case <-g.ctx.Done():
return nil, nil
default:
}
rl, _, err := g.client.ListReleases(g.repoOwner, g.repoName, gitea_sdk.ListReleasesOptions{ListOptions: gitea_sdk.ListOptions{
PageSize: g.maxPerPage,
Page: i,
}})
if err != nil {
return nil, err
}
for i := range rl {
releases = append(releases, g.convertGiteaRelease(rl[i]))
}
if !g.pagination || len(rl) < g.maxPerPage {
break
}
}
return releases, nil
}
func (g *GiteaDownloader) getIssueReactions(index int64) ([]*base.Reaction, error) {
var reactions []*base.Reaction
if err := g.client.CheckServerVersionConstraint(">=1.11"); err != nil {
log.Info("GiteaDownloader: instance to old, skip getIssueReactions")
return reactions, nil
}
rl, _, err := g.client.GetIssueReactions(g.repoOwner, g.repoName, index)
if err != nil {
return nil, err
}
for _, reaction := range rl {
reactions = append(reactions, &base.Reaction{
UserID: reaction.User.ID,
UserName: reaction.User.UserName,
Content: reaction.Reaction,
})
}
return reactions, nil
}
func (g *GiteaDownloader) getCommentReactions(commentID int64) ([]*base.Reaction, error) {
var reactions []*base.Reaction
if err := g.client.CheckServerVersionConstraint(">=1.11"); err != nil {
log.Info("GiteaDownloader: instance to old, skip getCommentReactions")
return reactions, nil
}
rl, _, err := g.client.GetIssueCommentReactions(g.repoOwner, g.repoName, commentID)
if err != nil {
return nil, err
}
for i := range rl {
reactions = append(reactions, &base.Reaction{
UserID: rl[i].User.ID,
UserName: rl[i].User.UserName,
Content: rl[i].Reaction,
})
}
return reactions, nil
}
// GetIssues returns issues according start and limit
func (g *GiteaDownloader) GetIssues(page, perPage int) ([]*base.Issue, bool, error) {
if perPage > g.maxPerPage {
perPage = g.maxPerPage
}
allIssues := make([]*base.Issue, 0, perPage)
issues, _, err := g.client.ListRepoIssues(g.repoOwner, g.repoName, gitea_sdk.ListIssueOption{
ListOptions: gitea_sdk.ListOptions{Page: page, PageSize: perPage},
State: gitea_sdk.StateAll,
Type: gitea_sdk.IssueTypeIssue,
})
if err != nil {
return nil, false, fmt.Errorf("error while listing issues: %w", err)
}
for _, issue := range issues {
labels := make([]*base.Label, 0, len(issue.Labels))
for i := range issue.Labels {
labels = append(labels, g.convertGiteaLabel(issue.Labels[i]))
}
var milestone string
if issue.Milestone != nil {
milestone = issue.Milestone.Title
}
reactions, err := g.getIssueReactions(issue.Index)
if err != nil {
WarnAndNotice("Unable to load reactions during migrating issue #%d in %s. Error: %v", issue.Index, g, err)
}
var assignees []string
for i := range issue.Assignees {
assignees = append(assignees, issue.Assignees[i].UserName)
}
allIssues = append(allIssues, &base.Issue{
Title: issue.Title,
Number: issue.Index,
PosterID: issue.Poster.ID,
PosterName: issue.Poster.UserName,
PosterEmail: issue.Poster.Email,
Content: issue.Body,
Milestone: milestone,
State: string(issue.State),
Created: issue.Created,
Updated: issue.Updated,
Closed: issue.Closed,
Reactions: reactions,
Labels: labels,
Assignees: assignees,
IsLocked: issue.IsLocked,
ForeignIndex: issue.Index,
})
}
isEnd := len(issues) < perPage
if !g.pagination {
isEnd = len(issues) == 0
}
return allIssues, isEnd, nil
}
// GetComments returns comments according issueNumber
func (g *GiteaDownloader) GetComments(commentable base.Commentable) ([]*base.Comment, bool, error) {
allComments := make([]*base.Comment, 0, g.maxPerPage)
for i := 1; ; i++ {
// make sure gitea can shutdown gracefully
select {
case <-g.ctx.Done():
return nil, false, nil
default:
}
comments, _, err := g.client.ListIssueComments(g.repoOwner, g.repoName, commentable.GetForeignIndex(), gitea_sdk.ListIssueCommentOptions{ListOptions: gitea_sdk.ListOptions{
PageSize: g.maxPerPage,
Page: i,
}})
if err != nil {
return nil, false, fmt.Errorf("error while listing comments for issue #%d. Error: %w", commentable.GetForeignIndex(), err)
}
for _, comment := range comments {
reactions, err := g.getCommentReactions(comment.ID)
if err != nil {
WarnAndNotice("Unable to load comment reactions during migrating issue #%d for comment %d in %s. Error: %v", commentable.GetForeignIndex(), comment.ID, g, err)
}
allComments = append(allComments, &base.Comment{
IssueIndex: commentable.GetLocalIndex(),
Index: comment.ID,
PosterID: comment.Poster.ID,
PosterName: comment.Poster.UserName,
PosterEmail: comment.Poster.Email,
Content: comment.Body,
Created: comment.Created,
Updated: comment.Updated,
Reactions: reactions,
})
}
if !g.pagination || len(comments) < g.maxPerPage {
break
}
}
return allComments, true, nil
}
// GetPullRequests returns pull requests according page and perPage
func (g *GiteaDownloader) GetPullRequests(page, perPage int) ([]*base.PullRequest, bool, error) {
if perPage > g.maxPerPage {
perPage = g.maxPerPage
}
allPRs := make([]*base.PullRequest, 0, perPage)
prs, _, err := g.client.ListRepoPullRequests(g.repoOwner, g.repoName, gitea_sdk.ListPullRequestsOptions{
ListOptions: gitea_sdk.ListOptions{
Page: page,
PageSize: perPage,
},
State: gitea_sdk.StateAll,
})
if err != nil {
return nil, false, fmt.Errorf("error while listing pull requests (page: %d, pagesize: %d). Error: %w", page, perPage, err)
}
for _, pr := range prs {
var milestone string
if pr.Milestone != nil {
milestone = pr.Milestone.Title
}
labels := make([]*base.Label, 0, len(pr.Labels))
for i := range pr.Labels {
labels = append(labels, g.convertGiteaLabel(pr.Labels[i]))
}
var (
headUserName string
headRepoName string
headCloneURL string
headRef string
headSHA string
)
if pr.Head != nil {
if pr.Head.Repository != nil {
headUserName = pr.Head.Repository.Owner.UserName
headRepoName = pr.Head.Repository.Name
headCloneURL = pr.Head.Repository.CloneURL
}
headSHA = pr.Head.Sha
headRef = pr.Head.Ref
}
var mergeCommitSHA string
if pr.MergedCommitID != nil {
mergeCommitSHA = *pr.MergedCommitID
}
reactions, err := g.getIssueReactions(pr.Index)
if err != nil {
WarnAndNotice("Unable to load reactions during migrating pull #%d in %s. Error: %v", pr.Index, g, err)
}
var assignees []string
for i := range pr.Assignees {
assignees = append(assignees, pr.Assignees[i].UserName)
}
createdAt := time.Time{}
if pr.Created != nil {
createdAt = *pr.Created
}
updatedAt := time.Time{}
if pr.Created != nil {
updatedAt = *pr.Updated
}
closedAt := pr.Closed
if pr.Merged != nil && closedAt == nil {
closedAt = pr.Merged
}
allPRs = append(allPRs, &base.PullRequest{
Title: pr.Title,
Number: pr.Index,
PosterID: pr.Poster.ID,
PosterName: pr.Poster.UserName,
PosterEmail: pr.Poster.Email,
Content: pr.Body,
State: string(pr.State),
Created: createdAt,
Updated: updatedAt,
Closed: closedAt,
Labels: labels,
Milestone: milestone,
Reactions: reactions,
Assignees: assignees,
Merged: pr.HasMerged,
MergedTime: pr.Merged,
MergeCommitSHA: mergeCommitSHA,
IsLocked: pr.IsLocked,
PatchURL: pr.PatchURL,
Head: base.PullRequestBranch{
Ref: headRef,
SHA: headSHA,
RepoName: headRepoName,
OwnerName: headUserName,
CloneURL: headCloneURL,
},
Base: base.PullRequestBranch{
Ref: pr.Base.Ref,
SHA: pr.Base.Sha,
RepoName: g.repoName,
OwnerName: g.repoOwner,
},
ForeignIndex: pr.Index,
})
// SECURITY: Ensure that the PR is safe
_ = CheckAndEnsureSafePR(allPRs[len(allPRs)-1], g.baseURL, g)
}
isEnd := len(prs) < perPage
if !g.pagination {
isEnd = len(prs) == 0
}
return allPRs, isEnd, nil
}
// GetReviews returns pull requests review
func (g *GiteaDownloader) GetReviews(reviewable base.Reviewable) ([]*base.Review, error) {
if err := g.client.CheckServerVersionConstraint(">=1.12"); err != nil {
log.Info("GiteaDownloader: instance to old, skip GetReviews")
return nil, nil
}
allReviews := make([]*base.Review, 0, g.maxPerPage)
for i := 1; ; i++ {
// make sure gitea can shutdown gracefully
select {
case <-g.ctx.Done():
return nil, nil
default:
}
prl, _, err := g.client.ListPullReviews(g.repoOwner, g.repoName, reviewable.GetForeignIndex(), gitea_sdk.ListPullReviewsOptions{ListOptions: gitea_sdk.ListOptions{
Page: i,
PageSize: g.maxPerPage,
}})
if err != nil {
return nil, err
}
for _, pr := range prl {
if pr.Reviewer == nil {
// Presumably this is a team review which we cannot migrate at present but we have to skip this review as otherwise the review will be mapped on to an incorrect user.
// TODO: handle team reviews
continue
}
rcl, _, err := g.client.ListPullReviewComments(g.repoOwner, g.repoName, reviewable.GetForeignIndex(), pr.ID)
if err != nil {
return nil, err
}
var reviewComments []*base.ReviewComment
for i := range rcl {
line := int(rcl[i].LineNum)
if rcl[i].OldLineNum > 0 {
line = int(rcl[i].OldLineNum) * -1
}
reviewComments = append(reviewComments, &base.ReviewComment{
ID: rcl[i].ID,
Content: rcl[i].Body,
TreePath: rcl[i].Path,
DiffHunk: rcl[i].DiffHunk,
Line: line,
CommitID: rcl[i].CommitID,
PosterID: rcl[i].Reviewer.ID,
CreatedAt: rcl[i].Created,
UpdatedAt: rcl[i].Updated,
})
}
review := &base.Review{
ID: pr.ID,
IssueIndex: reviewable.GetLocalIndex(),
ReviewerID: pr.Reviewer.ID,
ReviewerName: pr.Reviewer.UserName,
Official: pr.Official,
CommitID: pr.CommitID,
Content: pr.Body,
CreatedAt: pr.Submitted,
State: string(pr.State),
Comments: reviewComments,
}
allReviews = append(allReviews, review)
}
if len(prl) < g.maxPerPage {
break
}
}
return allReviews, nil
}