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Add merge style fast-forward-only (#28954)

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With this option, it is possible to require a linear commit history with
the following benefits over the next best option `Rebase+fast-forward`:
The original commits continue existing, with the original signatures
continuing to stay valid instead of being rewritten, there is no merge
commit, and reverting commits becomes easier.

Closes #24906
This commit is contained in:
Chris Copeland 2024-02-12 14:37:23 -08:00 • committed by Gergely Nagy
parent 05eaf1cf3e
commit 83123b493f
No known key found for this signature in database
25 changed files with 204 additions and 11 deletions
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2
modules/git/error.go
View file

@ -96,7 +96,7 @@ func (err ErrBranchNotExist) Unwrap() error {
return util.ErrNotExist
}
// ErrPushOutOfDate represents an error if merging fails due to unrelated histories
// ErrPushOutOfDate represents an error if merging fails due to the base branch being updated
type ErrPushOutOfDate struct {
StdOut string
StdErr string

6
modules/repository/create.go
View file

@ -87,7 +87,11 @@ func CreateRepositoryByExample(ctx context.Context, doer, u *user_model.User, re
units = append(units, repo_model.RepoUnit{
RepoID: repo.ID,
Type: tp,
Config: &repo_model.PullRequestsConfig{AllowMerge: true, AllowRebase: true, AllowRebaseMerge: true, AllowSquash: true, DefaultMergeStyle: repo_model.MergeStyle(setting.Repository.PullRequest.DefaultMergeStyle), AllowRebaseUpdate: true},
Config: &repo_model.PullRequestsConfig{
AllowMerge: true, AllowRebase: true, AllowRebaseMerge: true, AllowSquash: true, AllowFastForwardOnly: true,
DefaultMergeStyle: repo_model.MergeStyle(setting.Repository.PullRequest.DefaultMergeStyle),
AllowRebaseUpdate: true,
},
})
} else {
units = append(units, repo_model.RepoUnit{

5
modules/structs/repo.go
View file

@ -99,6 +99,7 @@ type Repository struct {
AllowRebase bool `json:"allow_rebase"`
AllowRebaseMerge bool `json:"allow_rebase_explicit"`
AllowSquash bool `json:"allow_squash_merge"`
AllowFastForwardOnly bool `json:"allow_fast_forward_only_merge"`
AllowRebaseUpdate bool `json:"allow_rebase_update"`
DefaultDeleteBranchAfterMerge bool `json:"default_delete_branch_after_merge"`
DefaultMergeStyle string `json:"default_merge_style"`
@ -198,6 +199,8 @@ type EditRepoOption struct {
AllowRebaseMerge *bool `json:"allow_rebase_explicit,omitempty"`
// either `true` to allow squash-merging pull requests, or `false` to prevent squash-merging.
AllowSquash *bool `json:"allow_squash_merge,omitempty"`
// either `true` to allow fast-forward-only merging pull requests, or `false` to prevent fast-forward-only merging.
AllowFastForwardOnly *bool `json:"allow_fast_forward_only_merge,omitempty"`
// either `true` to allow mark pr as merged manually, or `false` to prevent it.
AllowManualMerge *bool `json:"allow_manual_merge,omitempty"`
// either `true` to enable AutodetectManualMerge, or `false` to prevent it. Note: In some special cases, misjudgments can occur.
@ -206,7 +209,7 @@ type EditRepoOption struct {
AllowRebaseUpdate *bool `json:"allow_rebase_update,omitempty"`
// set to `true` to delete pr branch after merge by default
DefaultDeleteBranchAfterMerge *bool `json:"default_delete_branch_after_merge,omitempty"`
// set to a merge style to be used by this repository: "merge", "rebase", "rebase-merge", or "squash".
// set to a merge style to be used by this repository: "merge", "rebase", "rebase-merge", "squash", or "fast-forward-only".
DefaultMergeStyle *string `json:"default_merge_style,omitempty"`
// set to `true` to allow edits from maintainers by default
DefaultAllowMaintainerEdit *bool `json:"default_allow_maintainer_edit,omitempty"`