mirror of
https://github.com/MichaelMure/git-bug.git
synced 2024-12-14 17:51:44 +03:00
544 lines
13 KiB
Go
544 lines
13 KiB
Go
package github
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import (
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"context"
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"fmt"
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"time"
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"github.com/shurcooL/githubv4"
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"github.com/MichaelMure/git-bug/bridge/core"
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"github.com/MichaelMure/git-bug/bridge/core/auth"
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"github.com/MichaelMure/git-bug/bug"
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"github.com/MichaelMure/git-bug/cache"
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"github.com/MichaelMure/git-bug/entity"
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"github.com/MichaelMure/git-bug/util/text"
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)
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const EMPTY_TITLE_PLACEHOLDER = "<empty string>"
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// githubImporter implement the Importer interface
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type githubImporter struct {
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conf core.Configuration
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// mediator to access the Github API
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mediator *importMediator
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// send only channel
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out chan<- core.ImportResult
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}
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func (gi *githubImporter) Init(_ context.Context, _ *cache.RepoCache, conf core.Configuration) error {
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gi.conf = conf
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return nil
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}
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// ImportAll iterate over all the configured repository issues and ensure the creation of the
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// missing issues / timeline items / edits / label events ...
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func (gi *githubImporter) ImportAll(ctx context.Context, repo *cache.RepoCache, since time.Time) (<-chan core.ImportResult, error) {
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creds, err := auth.List(repo,
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auth.WithTarget(target),
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auth.WithKind(auth.KindToken),
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auth.WithMeta(auth.MetaKeyLogin, gi.conf[confKeyDefaultLogin]),
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)
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if err != nil {
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return nil, err
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}
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if len(creds) <= 0 {
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return nil, ErrMissingIdentityToken
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}
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client := buildClient(creds[0].(*auth.Token))
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gi.mediator = NewImportMediator(ctx, client, gi.conf[confKeyOwner], gi.conf[confKeyProject], since)
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out := make(chan core.ImportResult)
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gi.out = out
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go func() {
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defer close(gi.out)
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// Loop over all matching issues
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for issue := range gi.mediator.Issues() {
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// create issue
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b, err := gi.ensureIssue(ctx, repo, &issue)
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if err != nil {
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err := fmt.Errorf("issue creation: %v", err)
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out <- core.NewImportError(err, "")
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return
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}
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// loop over timeline items
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for item := range gi.mediator.TimelineItems(&issue) {
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err := gi.ensureTimelineItem(ctx, repo, b, item)
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if err != nil {
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err = fmt.Errorf("timeline item creation: %v", err)
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out <- core.NewImportError(err, "")
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return
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}
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}
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if !b.NeedCommit() {
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out <- core.NewImportNothing(b.Id(), "no imported operation")
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} else if err := b.Commit(); err != nil {
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// commit bug state
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err = fmt.Errorf("bug commit: %v", err)
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out <- core.NewImportError(err, "")
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return
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}
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}
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if err := gi.mediator.Error(); err != nil {
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gi.out <- core.NewImportError(err, "")
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}
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}()
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return out, nil
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}
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func (gi *githubImporter) ensureIssue(ctx context.Context, repo *cache.RepoCache, issue *issue) (*cache.BugCache, error) {
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author, err := gi.ensurePerson(ctx, repo, issue.Author)
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if err != nil {
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return nil, err
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}
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// resolve bug
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b, err := repo.ResolveBugMatcher(func(excerpt *cache.BugExcerpt) bool {
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return excerpt.CreateMetadata[core.MetaKeyOrigin] == target &&
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excerpt.CreateMetadata[metaKeyGithubId] == parseId(issue.Id)
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})
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if err != nil && err != bug.ErrBugNotExist {
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return nil, err
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}
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// get first issue edit
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// if it exists, then it holds the bug creation
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firstEdit, hasEdit := <-gi.mediator.IssueEdits(issue)
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// At Github there exist issues with seemingly empty titles. An example is
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// https://github.com/NixOS/nixpkgs/issues/72730 .
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// The title provided by the GraphQL API actually consists of a space followed by a
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// zero width space (U+200B). This title would cause the NewBugRaw() function to
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// return an error: empty title.
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title := string(issue.Title)
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if title == " \u200b" { // U+200B == zero width space
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title = EMPTY_TITLE_PLACEHOLDER
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}
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if err == bug.ErrBugNotExist {
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var textInput string
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if hasEdit {
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// use the first issue edit: it represents the bug creation itself
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textInput = string(*firstEdit.Diff)
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} else {
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// if there are no issue edits then the issue struct holds the bug creation
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textInput = string(issue.Body)
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}
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cleanText, err := text.Cleanup(textInput)
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if err != nil {
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return nil, err
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}
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// create bug
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b, _, err = repo.NewBugRaw(
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author,
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issue.CreatedAt.Unix(),
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title, // TODO: this is the *current* title, not the original one
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cleanText,
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nil,
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map[string]string{
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core.MetaKeyOrigin: target,
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metaKeyGithubId: parseId(issue.Id),
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metaKeyGithubUrl: issue.Url.String(),
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})
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if err != nil {
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return nil, err
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}
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// importing a new bug
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gi.out <- core.NewImportBug(b.Id())
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}
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if b == nil {
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return nil, fmt.Errorf("finding or creating issue")
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}
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// process remaining issue edits, if they exist
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for edit := range gi.mediator.IssueEdits(issue) {
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// other edits will be added as CommentEdit operations
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target, err := b.ResolveOperationWithMetadata(metaKeyGithubId, parseId(issue.Id))
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if err == cache.ErrNoMatchingOp {
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// original comment is missing somehow, issuing a warning
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gi.out <- core.NewImportWarning(fmt.Errorf("comment ID %s to edit is missing", parseId(issue.Id)), b.Id())
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continue
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}
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if err != nil {
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return nil, err
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}
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err = gi.ensureCommentEdit(ctx, repo, b, target, edit)
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if err != nil {
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return nil, err
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}
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}
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return b, nil
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}
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func (gi *githubImporter) ensureTimelineItem(ctx context.Context, repo *cache.RepoCache, b *cache.BugCache, item timelineItem) error {
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switch item.Typename {
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case "IssueComment":
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err := gi.ensureComment(ctx, repo, b, &item.IssueComment)
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if err != nil {
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return fmt.Errorf("timeline comment creation: %v", err)
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}
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return nil
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case "LabeledEvent":
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id := parseId(item.LabeledEvent.Id)
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_, err := b.ResolveOperationWithMetadata(metaKeyGithubId, id)
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if err == nil {
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return nil
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}
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if err != cache.ErrNoMatchingOp {
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return err
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}
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author, err := gi.ensurePerson(ctx, repo, item.LabeledEvent.Actor)
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if err != nil {
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return err
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}
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op, err := b.ForceChangeLabelsRaw(
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author,
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item.LabeledEvent.CreatedAt.Unix(),
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[]string{
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string(item.LabeledEvent.Label.Name),
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},
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nil,
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map[string]string{metaKeyGithubId: id},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportLabelChange(op.Id())
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return nil
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case "UnlabeledEvent":
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id := parseId(item.UnlabeledEvent.Id)
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_, err := b.ResolveOperationWithMetadata(metaKeyGithubId, id)
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if err == nil {
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return nil
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}
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if err != cache.ErrNoMatchingOp {
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return err
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}
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author, err := gi.ensurePerson(ctx, repo, item.UnlabeledEvent.Actor)
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if err != nil {
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return err
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}
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op, err := b.ForceChangeLabelsRaw(
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author,
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item.UnlabeledEvent.CreatedAt.Unix(),
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nil,
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[]string{
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string(item.UnlabeledEvent.Label.Name),
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},
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map[string]string{metaKeyGithubId: id},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportLabelChange(op.Id())
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return nil
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case "ClosedEvent":
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id := parseId(item.ClosedEvent.Id)
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_, err := b.ResolveOperationWithMetadata(metaKeyGithubId, id)
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if err != cache.ErrNoMatchingOp {
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return err
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}
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if err == nil {
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return nil
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}
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author, err := gi.ensurePerson(ctx, repo, item.ClosedEvent.Actor)
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if err != nil {
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return err
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}
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op, err := b.CloseRaw(
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author,
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item.ClosedEvent.CreatedAt.Unix(),
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map[string]string{metaKeyGithubId: id},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportStatusChange(op.Id())
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return nil
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case "ReopenedEvent":
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id := parseId(item.ReopenedEvent.Id)
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_, err := b.ResolveOperationWithMetadata(metaKeyGithubId, id)
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if err != cache.ErrNoMatchingOp {
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return err
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}
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if err == nil {
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return nil
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}
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author, err := gi.ensurePerson(ctx, repo, item.ReopenedEvent.Actor)
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if err != nil {
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return err
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}
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op, err := b.OpenRaw(
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author,
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item.ReopenedEvent.CreatedAt.Unix(),
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map[string]string{metaKeyGithubId: id},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportStatusChange(op.Id())
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return nil
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case "RenamedTitleEvent":
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id := parseId(item.RenamedTitleEvent.Id)
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_, err := b.ResolveOperationWithMetadata(metaKeyGithubId, id)
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if err != cache.ErrNoMatchingOp {
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return err
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}
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if err == nil {
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return nil
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}
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author, err := gi.ensurePerson(ctx, repo, item.RenamedTitleEvent.Actor)
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if err != nil {
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return err
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}
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// At Github there exist issues with seemingly empty titles. An example is
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// https://github.com/NixOS/nixpkgs/issues/72730 .
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// The title provided by the GraphQL API actually consists of a space followed
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// by a zero width space (U+200B). This title would cause the NewBugRaw()
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// function to return an error: empty title.
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title := string(item.RenamedTitleEvent.CurrentTitle)
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if title == " \u200b" { // U+200B == zero width space
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title = EMPTY_TITLE_PLACEHOLDER
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}
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op, err := b.SetTitleRaw(
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author,
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item.RenamedTitleEvent.CreatedAt.Unix(),
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title,
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map[string]string{metaKeyGithubId: id},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportTitleEdition(op.Id())
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return nil
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}
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return nil
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}
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func (gi *githubImporter) ensureComment(ctx context.Context, repo *cache.RepoCache, b *cache.BugCache, comment *issueComment) error {
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author, err := gi.ensurePerson(ctx, repo, comment.Author)
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if err != nil {
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return err
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}
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targetOpID, err := b.ResolveOperationWithMetadata(metaKeyGithubId, parseId(comment.Id))
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if err != nil && err != cache.ErrNoMatchingOp {
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// real error
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return err
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}
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firstEdit, hasEdit := <-gi.mediator.CommentEdits(comment)
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if err == cache.ErrNoMatchingOp {
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var textInput string
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if hasEdit {
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// use the first comment edit: it represents the comment creation itself
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textInput = string(*firstEdit.Diff)
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} else {
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// if there are not comment edits, then the comment struct holds the comment creation
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textInput = string(comment.Body)
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}
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cleanText, err := text.Cleanup(textInput)
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if err != nil {
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return err
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}
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// add comment operation
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op, err := b.AddCommentRaw(
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author,
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comment.CreatedAt.Unix(),
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cleanText,
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nil,
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map[string]string{
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metaKeyGithubId: parseId(comment.Id),
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metaKeyGithubUrl: comment.Url.String(),
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},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportComment(op.Id())
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targetOpID = op.Id()
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}
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if targetOpID == "" {
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return fmt.Errorf("finding or creating issue comment")
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}
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// process remaining comment edits, if they exist
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for edit := range gi.mediator.CommentEdits(comment) {
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// ensure editor identity
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_, err := gi.ensurePerson(ctx, repo, edit.Editor)
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if err != nil {
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return err
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}
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err = gi.ensureCommentEdit(ctx, repo, b, targetOpID, edit)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (gi *githubImporter) ensureCommentEdit(ctx context.Context, repo *cache.RepoCache, b *cache.BugCache, target entity.Id, edit userContentEdit) error {
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_, err := b.ResolveOperationWithMetadata(metaKeyGithubId, parseId(edit.Id))
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if err == nil {
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return nil
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}
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if err != cache.ErrNoMatchingOp {
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// real error
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return err
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}
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editor, err := gi.ensurePerson(ctx, repo, edit.Editor)
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if err != nil {
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return err
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}
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switch {
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case edit.DeletedAt != nil:
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// comment deletion, not supported yet
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return nil
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case edit.DeletedAt == nil:
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cleanText, err := text.Cleanup(string(*edit.Diff))
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if err != nil {
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return err
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}
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// comment edition
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op, err := b.EditCommentRaw(
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editor,
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edit.CreatedAt.Unix(),
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target,
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cleanText,
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map[string]string{
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metaKeyGithubId: parseId(edit.Id),
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},
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)
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if err != nil {
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return err
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}
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gi.out <- core.NewImportCommentEdition(op.Id())
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return nil
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}
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return nil
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}
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// ensurePerson create a bug.Person from the Github data
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func (gi *githubImporter) ensurePerson(ctx context.Context, repo *cache.RepoCache, actor *actor) (*cache.IdentityCache, error) {
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// When a user has been deleted, Github return a null actor, while displaying a profile named "ghost"
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// in it's UI. So we need a special case to get it.
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if actor == nil {
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return gi.getGhost(ctx, repo)
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}
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// Look first in the cache
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i, err := repo.ResolveIdentityImmutableMetadata(metaKeyGithubLogin, string(actor.Login))
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if err == nil {
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return i, nil
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}
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if entity.IsErrMultipleMatch(err) {
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return nil, err
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}
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// importing a new identity
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var name string
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var email string
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switch actor.Typename {
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case "User":
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if actor.User.Name != nil {
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name = string(*(actor.User.Name))
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}
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email = string(actor.User.Email)
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case "Organization":
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if actor.Organization.Name != nil {
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name = string(*(actor.Organization.Name))
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}
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if actor.Organization.Email != nil {
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email = string(*(actor.Organization.Email))
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}
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case "Bot":
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}
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// Name is not necessarily set, fallback to login as a name is required in the identity
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if name == "" {
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name = string(actor.Login)
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}
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i, err = repo.NewIdentityRaw(
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name,
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email,
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string(actor.Login),
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string(actor.AvatarUrl),
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map[string]string{
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metaKeyGithubLogin: string(actor.Login),
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},
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)
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if err != nil {
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return nil, err
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}
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gi.out <- core.NewImportIdentity(i.Id())
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return i, nil
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}
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func (gi *githubImporter) getGhost(ctx context.Context, repo *cache.RepoCache) (*cache.IdentityCache, error) {
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loginName := "ghost"
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// Look first in the cache
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i, err := repo.ResolveIdentityImmutableMetadata(metaKeyGithubLogin, loginName)
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if err == nil {
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return i, nil
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}
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if entity.IsErrMultipleMatch(err) {
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return nil, err
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}
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user, err := gi.mediator.User(ctx, loginName)
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userName := ""
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if user.Name != nil {
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userName = string(*user.Name)
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}
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return repo.NewIdentityRaw(
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userName,
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"",
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string(user.Login),
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string(user.AvatarUrl),
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map[string]string{
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metaKeyGithubLogin: string(user.Login),
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},
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)
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}
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// parseId converts the unusable githubv4.ID (an interface{}) into a string
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func parseId(id githubv4.ID) string {
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return fmt.Sprintf("%v", id)
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}
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