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package iterator
import (
"context"
"github.com/xanzy/go-gitlab"
)
type issueIterator struct {
page int
lastPage bool
index int
cache []*gitlab.Issue
}
func newIssueIterator() *issueIterator {
ii := &issueIterator{}
ii.Reset()
return ii
}
func (ii *issueIterator) Next(ctx context.Context, conf config) (bool, error) {
// first query
if ii.cache == nil {
return ii.getNext(ctx, conf)
}
// move cursor index
if ii.index < len(ii.cache)-1 {
ii.index++
return true, nil
}
return ii.getNext(ctx, conf)
}
func (ii *issueIterator) Value() *gitlab.Issue {
return ii.cache[ii.index]
}
func (ii *issueIterator) getNext(ctx context.Context, conf config) (bool, error) {
if ii.lastPage {
return false, nil
}
ctx, cancel := context.WithTimeout(ctx, conf.timeout)
defer cancel()
issues, resp, err := conf.gc.Issues.ListProjectIssues(
conf.project,
&gitlab.ListProjectIssuesOptions{
ListOptions: gitlab.ListOptions{
Page: ii.page,
PerPage: conf.capacity,
},
Scope: gitlab.String("all"),
UpdatedAfter: &conf.since,
Sort: gitlab.String("asc"),
},
gitlab.WithContext(ctx),
)
if err != nil {
ii.Reset()
return false, err
}
if resp.TotalPages == ii.page {
ii.lastPage = true
}
// if repository doesn't have any issues
if len(issues) == 0 {
return false, nil
}
ii.cache = issues
ii.index = 0
ii.page++
return true, nil
}
func (ii *issueIterator) Reset() {
ii.index = -1
ii.page = 1
ii.lastPage = false
ii.cache = nil
}
|
