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Move database operations of merging a pull request to post receive hook and add a transaction (#30805)

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Merging PR may fail because of various problems. The pull request may
have a dirty state because there is no transaction when merging a pull
request. ref
https://github.com/go-gitea/gitea/pull/25741#issuecomment-2074126393

This PR moves all database update operations to post-receive handler for
merging a pull request and having a database transaction. That means if
database operations fail, then the git merging will fail, the git client
will get a fail result.

There are already many tests for pull request merging, so we don't need
to add a new one.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit ebf0c969403d91ed80745ff5bd7dfbdb08174fc7)

Conflicts:
	modules/private/hook.go
	routers/private/hook_post_receive.go
	trivial conflicts because
	  263a716cb5 * Performance optimization for git push (#30104)
	was not cherry-picked and because of
	  998a431747 Do not update PRs based on events that happened before they existed
(cherry picked from commit eb792d9f8a)

(cherry picked from commit ec3f5f9992d7ff8250c044a4467524d53bd50210)
This commit is contained in:
Lunny Xiao 2024-05-07 15:36:48 +08:00 • committed by Earl Warren
parent 99bd29f02f
commit 7e81775184
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8 changed files with 150 additions and 18 deletions
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8
modules/repository/env.go
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@ -25,11 +25,19 @@ const (
EnvKeyID = "GITEA_KEY_ID" // public key ID
EnvDeployKeyID = "GITEA_DEPLOY_KEY_ID"
EnvPRID = "GITEA_PR_ID"
EnvPushTrigger = "GITEA_PUSH_TRIGGER"
EnvIsInternal = "GITEA_INTERNAL_PUSH"
EnvAppURL = "GITEA_ROOT_URL"
EnvActionPerm = "GITEA_ACTION_PERM"
)
type PushTrigger string
const (
PushTriggerPRMergeToBase PushTrigger = "pr-merge-to-base"
PushTriggerPRUpdateWithBase PushTrigger = "pr-update-with-base"
)
// InternalPushingEnvironment returns an os environment to switch off hooks on push
// It is recommended to avoid using this unless you are pushing within a transaction
// or if you absolutely are sure that post-receive and pre-receive will do nothing