public async Task InsertAsync(int index, LeafInfo leafInfo)
{
var page = await GetPageAsync();
var leafInfos = await GetMutableLeafInfosAsync();
if (index > 0)
{
Guard.Assert(
leafInfos[index - 1].Version < leafInfo.Version,
"The version added to a page must have a higher version than the item before it.");
}
if (index < leafInfos.Count)
{
Guard.Assert(
leafInfos[index].Version > leafInfo.Version,
"The version added to a page must have a lower version than the item after it.");
}
// Add to the real page, for future serialization.
page.Items.Insert(index, leafInfo.LeafItem);
// Add to the leaf info list, for bookeeping.
leafInfos.Insert(index, leafInfo);
Count++;
UpdateBounds(page, leafInfos);
}
private async Task InsertAsync(
Context context,
PageInfo pageInfo,
int index,
CatalogCommitItem entry)
{
if (entry.IsPackageDelete)
{
// No matching version was found for this delete. No more work is necessary.
_logger.LogInformation(
"Version {Version} does not exist. The delete from commit {CommitId} will have no affect.",
entry.PackageIdentity.Version.ToNormalizedString(),
entry.CommitId);
}
else
{
// Insert the new registration leaf item.
_logger.LogInformation(
"Version {Version} will be added by commit {CommitId}.",
entry.PackageIdentity.Version.ToNormalizedString(),
entry.CommitId);
var leafInfo = LeafInfo.New(entry.PackageIdentity.Version);
await pageInfo.InsertAsync(index, leafInfo);
context.ModifiedLeaves.Add(leafInfo);
context.ModifiedPages.Add(pageInfo);
}
}
private static void Initialize(PageInfo pageInfo, RegistrationPage page)
{
// Ensure the page is sorted in ascending order by version.
var leafInfos = page
.Items
.Select(x => LeafInfo.Existing(x))
.OrderBy(x => x.Version)
.ToList();
page.Items.Clear();
page.Items.AddRange(leafInfos.Select(x => x.LeafItem));
// Update the bookkeeping with the latest information. The leaf items themselves are the "true" for the
// count, lower bound, and upper bound properties not whatever might be set on the page item.
pageInfo._page = page;
pageInfo._leafInfos = leafInfos;
pageInfo.Count = page.Items.Count;
pageInfo.Lower = leafInfos.FirstOrDefault()?.Version;
pageInfo.Upper = leafInfos.LastOrDefault()?.Version;
}