From aa4e225a80b37ce26f5f8c69041ee735f512b113 Mon Sep 17 00:00:00 2001
From: Matthias Simon <matthias.simon@nokia.com>
Date: Sun, 14 Feb 2021 20:35:03 +0100
Subject: gitlab: Add new iterator with state change events

Retrieving events is spread across various various Gitlab APIs. This
makes importing and sorting Gitlab events by time quite complicated.

This commit replaces the old iterators with a goroutine/channel-based
iterator, which merges the individual Gitlab API streams into a single
(sorted) event stream.
---
 bridge/gitlab/iterator/issue.go | 89 -----------------------------------------
 1 file changed, 89 deletions(-)
 delete mode 100644 bridge/gitlab/iterator/issue.go

(limited to 'bridge/gitlab/iterator/issue.go')

diff --git a/bridge/gitlab/iterator/issue.go b/bridge/gitlab/iterator/issue.go
deleted file mode 100644
index 9361b496..00000000
--- a/bridge/gitlab/iterator/issue.go
+++ /dev/null
@@ -1,89 +0,0 @@
-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
-}
-- 
cgit