gitea/models/pull.go
2015-10-22 14:47:32 -04:00

265 lines
7.2 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package models
import (
"fmt"
"io/ioutil"
"os"
"path"
"strings"
"time"
"github.com/Unknwon/com"
"github.com/go-xorm/xorm"
"github.com/gogits/gogs/modules/git"
"github.com/gogits/gogs/modules/log"
"github.com/gogits/gogs/modules/process"
)
type PullRequestType int
const (
PULL_REQUEST_GOGS PullRequestType = iota
PLLL_ERQUEST_GIT
)
type PullRequestStatus int
const (
PULL_REQUEST_STATUS_CONFLICT PullRequestStatus = iota
PULL_REQUEST_STATUS_CHECKING
PULL_REQUEST_STATUS_MERGEABLE
)
// PullRequest represents relation between pull request and repositories.
type PullRequest struct {
ID int64 `xorm:"pk autoincr"`
Type PullRequestType
Status PullRequestStatus
IssueID int64 `xorm:"INDEX"`
Issue *Issue `xorm:"-"`
Index int64
HeadRepoID int64
HeadRepo *Repository `xorm:"-"`
BaseRepoID int64
HeadUserName string
HeadBranch string
BaseBranch string
MergeBase string `xorm:"VARCHAR(40)"`
MergedCommitID string `xorm:"VARCHAR(40)"`
HasMerged bool
Merged time.Time
MergerID int64
Merger *User `xorm:"-"`
}
// Note: don't try to get Pull because will end up recursive querying.
func (pr *PullRequest) AfterSet(colName string, _ xorm.Cell) {
var err error
switch colName {
case "head_repo_id":
// FIXME: shouldn't show error if it's known that head repository has been removed.
pr.HeadRepo, err = GetRepositoryByID(pr.HeadRepoID)
if err != nil {
log.Error(3, "GetRepositoryByID[%d]: %v", pr.ID, err)
}
case "merger_id":
if !pr.HasMerged {
return
}
pr.Merger, err = GetUserByID(pr.MergerID)
if err != nil {
if IsErrUserNotExist(err) {
pr.MergerID = -1
pr.Merger = NewFakeUser()
} else {
log.Error(3, "GetUserByID[%d]: %v", pr.ID, err)
}
}
case "merged":
if !pr.HasMerged {
return
}
pr.Merged = regulateTimeZone(pr.Merged)
}
}
// CanAutoMerge returns true if this pull request can be merged automatically.
func (pr *PullRequest) CanAutoMerge() bool {
return pr.Status == PULL_REQUEST_STATUS_MERGEABLE
}
// Merge merges pull request to base repository.
func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository) (err error) {
sess := x.NewSession()
defer sessionRelease(sess)
if err = sess.Begin(); err != nil {
return err
}
if err = pr.Issue.changeStatus(sess, doer, true); err != nil {
return fmt.Errorf("Pull.changeStatus: %v", err)
}
headRepoPath := RepoPath(pr.HeadUserName, pr.HeadRepo.Name)
headGitRepo, err := git.OpenRepository(headRepoPath)
if err != nil {
return fmt.Errorf("OpenRepository: %v", err)
}
pr.MergedCommitID, err = headGitRepo.GetCommitIdOfBranch(pr.HeadBranch)
if err != nil {
return fmt.Errorf("GetCommitIdOfBranch: %v", err)
}
if err = mergePullRequestAction(sess, doer, pr.Issue.Repo, pr.Issue); err != nil {
return fmt.Errorf("mergePullRequestAction: %v", err)
}
pr.HasMerged = true
pr.Merged = time.Now()
pr.MergerID = doer.Id
if _, err = sess.Id(pr.ID).AllCols().Update(pr); err != nil {
return fmt.Errorf("update pull request: %v", err)
}
// Clone base repo.
tmpBasePath := path.Join("data/tmp/repos", com.ToStr(time.Now().Nanosecond())+".git")
os.MkdirAll(path.Dir(tmpBasePath), os.ModePerm)
defer os.RemoveAll(path.Dir(tmpBasePath))
var stderr string
if _, stderr, err = process.ExecTimeout(5*time.Minute,
fmt.Sprintf("PullRequest.Merge(git clone): %s", tmpBasePath),
"git", "clone", baseGitRepo.Path, tmpBasePath); err != nil {
return fmt.Errorf("git clone: %s", stderr)
}
// Check out base branch.
if _, stderr, err = process.ExecDir(-1, tmpBasePath,
fmt.Sprintf("PullRequest.Merge(git checkout): %s", tmpBasePath),
"git", "checkout", pr.BaseBranch); err != nil {
return fmt.Errorf("git checkout: %s", stderr)
}
// Pull commits.
if _, stderr, err = process.ExecDir(-1, tmpBasePath,
fmt.Sprintf("PullRequest.Merge(git pull): %s", tmpBasePath),
"git", "pull", headRepoPath, pr.HeadBranch); err != nil {
return fmt.Errorf("git pull[%s / %s -> %s]: %s", headRepoPath, pr.HeadBranch, tmpBasePath, stderr)
}
// Push back to upstream.
if _, stderr, err = process.ExecDir(-1, tmpBasePath,
fmt.Sprintf("PullRequest.Merge(git push): %s", tmpBasePath),
"git", "push", baseGitRepo.Path, pr.BaseBranch); err != nil {
return fmt.Errorf("git push: %s", stderr)
}
return sess.Commit()
}
// NewPullRequest creates new pull request with labels for repository.
func NewPullRequest(repo *Repository, pull *Issue, labelIDs []int64, uuids []string, pr *PullRequest, patch []byte) (err error) {
sess := x.NewSession()
defer sessionRelease(sess)
if err = sess.Begin(); err != nil {
return err
}
if err = newIssue(sess, repo, pull, labelIDs, uuids, true); err != nil {
return fmt.Errorf("newIssue: %v", err)
}
// Notify watchers.
act := &Action{
ActUserID: pull.Poster.Id,
ActUserName: pull.Poster.Name,
ActEmail: pull.Poster.Email,
OpType: CREATE_PULL_REQUEST,
Content: fmt.Sprintf("%d|%s", pull.Index, pull.Name),
RepoID: repo.ID,
RepoUserName: repo.Owner.Name,
RepoName: repo.Name,
IsPrivate: repo.IsPrivate,
}
if err = notifyWatchers(sess, act); err != nil {
return err
}
// Test apply patch.
if err = repo.UpdateLocalCopy(); err != nil {
return fmt.Errorf("UpdateLocalCopy: %v", err)
}
repoPath, err := repo.RepoPath()
if err != nil {
return fmt.Errorf("RepoPath: %v", err)
}
patchPath := path.Join(repoPath, "pulls", com.ToStr(pull.ID)+".patch")
os.MkdirAll(path.Dir(patchPath), os.ModePerm)
if err = ioutil.WriteFile(patchPath, patch, 0644); err != nil {
return fmt.Errorf("save patch: %v", err)
}
pr.Status = PULL_REQUEST_STATUS_MERGEABLE
_, stderr, err := process.ExecDir(-1, repo.LocalCopyPath(),
fmt.Sprintf("NewPullRequest(git apply --check): %d", repo.ID),
"git", "apply", "--check", patchPath)
if err != nil {
if strings.Contains(stderr, "patch does not apply") {
pr.Status = PULL_REQUEST_STATUS_CONFLICT
} else {
return fmt.Errorf("git apply --check: %v - %s", err, stderr)
}
}
pr.IssueID = pull.ID
pr.Index = pull.Index
if _, err = sess.Insert(pr); err != nil {
return fmt.Errorf("insert pull repo: %v", err)
}
return sess.Commit()
}
// GetUnmergedPullRequest returnss a pull request that is open and has not been merged
// by given head/base and repo/branch.
func GetUnmergedPullRequest(headRepoID, baseRepoID int64, headBranch, baseBranch string) (*PullRequest, error) {
pr := new(PullRequest)
has, err := x.Where("head_repo_id=? AND head_branch=? AND base_repo_id=? AND base_branch=? AND has_merged=? AND issue.is_closed=?",
headRepoID, headBranch, baseRepoID, baseBranch, false, false).
Join("INNER", "issue", "issue.id=pull_request.issue_id").Get(pr)
if err != nil {
return nil, err
} else if !has {
return nil, ErrPullRequestNotExist{0, 0, headRepoID, baseRepoID, headBranch, baseBranch}
}
return pr, nil
}
// GetPullRequestByIssueID returns pull request by given issue ID.
func GetPullRequestByIssueID(issueID int64) (*PullRequest, error) {
pr := &PullRequest{
IssueID: issueID,
}
has, err := x.Get(pr)
if err != nil {
return nil, err
} else if !has {
return nil, ErrPullRequestNotExist{0, issueID, 0, 0, "", ""}
}
return pr, nil
}