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feat(performance): remove BranchName in /:owner/:repo/commit/:commit

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`BranchName` provides the nearest branch of the requested `:commit`.

It's plenty fast on smaller repositories.
On larger repositories like nixpkgs, however, this can easily take 2-3
seconds on a modern machine on a NVMe.

For context, at the time of writing, nixpkgs has over 650k commits and
roughly 250 branches.

`BranchName` is used once in the whole view:
The cherry-pick target branch default selection.

And I believe that's a logic error, which is why this patch is so small.

The nearest branch of a given commit will always be a branch the commit
is already part of. The branch you most likely *don't* want to
cherry-pick to.

Sure, one can technically cherry-pick a commit onto the same branch, but
that simply results in an empty commit.

I don't believe this is intended and even less so worth the compute.

Instead, the cherry-pick branch selection suggestion now always uses
the default branch, which used to be the fallback.

If a user wants to know which branches contain the given commit,
`load-branches-and-tags` exists and should be used instead.

Also, to add insult to injury, `BranchName` was calculated for both
logged-in and not logged-in users, despite its only consumer, the
cherry-pick operation, only being rendered when a given user has
write/commit permissions.

But this isn't particularly surprising, given this happens a lot in
Forgejo's codebase.
This commit is contained in:
emilylange 2024-08-08 22:29:42 +02:00
parent 5ae2dbcb14
commit c1f85ce27b
No known key found for this signature in database
GPG key ID: 0AD773CE46FD0F87
2 changed files with 2 additions and 8 deletions
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6
routers/web/repo/commit.go
View file

@ -416,12 +416,6 @@ func Diff(ctx *context.Context) {
}
}
ctx.Data["BranchName"], err = commit.GetBranchName()
if err != nil {
ctx.ServerError("commit.GetBranchName", err)
return
}
ctx.HTML(http.StatusOK, tplCommitPage)
}

4
templates/repo/commit_page.tmpl
View file

@ -71,8 +71,8 @@
"branchForm" "branch-dropdown-form"
"branchURLPrefix" (printf "%s/_cherrypick/%s/" $.RepoLink .CommitID) "branchURLSuffix" ""
"setAction" true "submitForm" true}}
<form method="get" action="{{$.RepoLink}}/_cherrypick/{{.CommitID}}/{{if $.BranchName}}{{PathEscapeSegments $.BranchName}}{{else}}{{PathEscapeSegments $.Repository.DefaultBranch}}{{end}}" id="branch-dropdown-form">
<input type="hidden" name="ref" value="{{if $.BranchName}}{{$.BranchName}}{{else}}{{$.Repository.DefaultBranch}}{{end}}">
<form method="get" action="{{$.RepoLink}}/_cherrypick/{{.CommitID}}/{{PathEscapeSegments $.Repository.DefaultBranch}}" id="branch-dropdown-form">
<input type="hidden" name="ref" value="{{$.Repository.DefaultBranch}}">
<input type="hidden" name="refType" value="branch">
<input type="hidden" id="cherry-pick-type" name="cherry-pick-type"><br>
<button type="submit" id="cherry-pick-submit" class="ui primary button"></button>