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// Copyright 2019 The Gitea Authors.
// All rights reserved.
// SPDX-License-Identifier: MIT
package pull
import (
"context"
"errors"
"fmt"
"code.gitea.io/gitea/models/db"
git_model "code.gitea.io/gitea/models/git"
issues_model "code.gitea.io/gitea/models/issues"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/structs"
"github.com/gobwas/glob"
)
// MergeRequiredContextsCommitStatus returns a commit status state for given required contexts
func MergeRequiredContextsCommitStatus(commitStatuses []*git_model.CommitStatus, requiredContexts []string) structs.CommitStatusState {
// matchedCount is the number of `CommitStatus.Context` that match any context of `requiredContexts`
matchedCount := 0
returnedStatus := structs.CommitStatusSuccess
if len(requiredContexts) > 0 {
requiredContextsGlob := make(map[string]glob.Glob, len(requiredContexts))
for _, ctx := range requiredContexts {
if gp, err := glob.Compile(ctx); err != nil {
log.Error("glob.Compile %s failed. Error: %v", ctx, err)
} else {
requiredContextsGlob[ctx] = gp
}
}
for _, gp := range requiredContextsGlob {
var targetStatus structs.CommitStatusState
for _, commitStatus := range commitStatuses {
if gp.Match(commitStatus.Context) {
targetStatus = commitStatus.State
matchedCount++
break
}
}
// If required rule not match any action, then it is pending
if targetStatus == "" {
if structs.CommitStatusPending.NoBetterThan(returnedStatus) {
returnedStatus = structs.CommitStatusPending
}
break
}
if targetStatus.NoBetterThan(returnedStatus) {
returnedStatus = targetStatus
}
}
}
if matchedCount == 0 && returnedStatus == structs.CommitStatusSuccess {
status := git_model.CalcCommitStatus(commitStatuses)
if status != nil {
return status.State
}
return ""
}
return returnedStatus
}
// IsCommitStatusContextSuccess returns true if all required status check contexts succeed.
func IsCommitStatusContextSuccess(commitStatuses []*git_model.CommitStatus, requiredContexts []string) bool {
// If no specific context is required, require that last commit status is a success
if len(requiredContexts) == 0 {
status := git_model.CalcCommitStatus(commitStatuses)
if status == nil || status.State != structs.CommitStatusSuccess {
return false
}
return true
}
for _, ctx := range requiredContexts {
var found bool
for _, commitStatus := range commitStatuses {
if commitStatus.Context == ctx {
if commitStatus.State != structs.CommitStatusSuccess {
return false
}
found = true
break
}
}
if !found {
return false
}
}
return true
}
// IsPullCommitStatusPass returns if all required status checks PASS
func IsPullCommitStatusPass(ctx context.Context, pr *issues_model.PullRequest) (bool, error) {
pb, err := git_model.GetFirstMatchProtectedBranchRule(ctx, pr.BaseRepoID, pr.BaseBranch)
if err != nil {
return false, fmt.Errorf("GetFirstMatchProtectedBranchRule: %w", err)
}
if pb == nil || !pb.EnableStatusCheck {
return true, nil
}
state, err := GetPullRequestCommitStatusState(ctx, pr)
if err != nil {
return false, err
}
return state.IsSuccess(), nil
}
// GetPullRequestCommitStatusState returns pull request merged commit status state
func GetPullRequestCommitStatusState(ctx context.Context, pr *issues_model.PullRequest) (structs.CommitStatusState, error) {
// Ensure HeadRepo is loaded
if err := pr.LoadHeadRepo(ctx); err != nil {
return "", fmt.Errorf("LoadHeadRepo: %w", err)
}
// check if all required status checks are successful
headGitRepo, closer, err := gitrepo.RepositoryFromContextOrOpen(ctx, pr.HeadRepo)
if err != nil {
return "", fmt.Errorf("RepositoryFromContextOrOpen: %w", err)
}
defer closer.Close()
if pr.Flow == issues_model.PullRequestFlowGithub && !headGitRepo.IsBranchExist(pr.HeadBranch) {
return "", errors.New("head branch does not exist, can not merge")
}
if pr.Flow == issues_model.PullRequestFlowAGit && !git.IsReferenceExist(ctx, headGitRepo.Path, pr.GetGitRefName()) {
return "", errors.New("head branch does not exist, can not merge")
}
var sha string
if pr.Flow == issues_model.PullRequestFlowGithub {
sha, err = headGitRepo.GetBranchCommitID(pr.HeadBranch)
} else {
sha, err = headGitRepo.GetRefCommitID(pr.GetGitRefName())
}
if err != nil {
return "", err
}
if err := pr.LoadBaseRepo(ctx); err != nil {
return "", fmt.Errorf("LoadBaseRepo: %w", err)
}
commitStatuses, _, err := git_model.GetLatestCommitStatus(ctx, pr.BaseRepo.ID, sha, db.ListOptionsAll)
if err != nil {
return "", fmt.Errorf("GetLatestCommitStatus: %w", err)
}
pb, err := git_model.GetFirstMatchProtectedBranchRule(ctx, pr.BaseRepoID, pr.BaseBranch)
if err != nil {
return "", fmt.Errorf("GetFirstMatchProtectedBranchRule: %w", err)
}
var requiredContexts []string
if pb != nil {
requiredContexts = pb.StatusCheckContexts
}
return MergeRequiredContextsCommitStatus(commitStatuses, requiredContexts), nil
}
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