mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-17 13:13:36 +00:00
675 lines
25 KiB
Python
675 lines
25 KiB
Python
#!/usr/bin/env python3
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"""
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A plan:
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- TODO: consider receiving GH objects cache from S3, but it's really a few
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of requests to API currently
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- Get all open release PRs (20.10, 21.8, 22.5, etc.)
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- Get all pull-requests between the date of the merge-base for the oldest PR with
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labels pr-must-backport and version-specific v21.8-must-backport, but without
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pr-backported
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- Iterate over gotten PRs:
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- for pr-must-backport:
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- check if all backport-PRs are created. If yes,
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set pr-backported label and finish
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- If not, create either cherrypick PRs or merge cherrypick (in the same
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stage, if mergable) and create backport-PRs
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- If successfull, set pr-backported label on the PR
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- for version-specific labels:
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- the same, check, cherry-pick, backport, pr-backported
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Cherry-pick stage:
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- From time to time the cherry-pick fails, if it was done manually. In the
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case we check if it's even needed, and mark the release as done somehow.
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"""
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import argparse
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import logging
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import os
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from contextlib import contextmanager
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from datetime import date, datetime, timedelta
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from pathlib import Path
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from subprocess import CalledProcessError
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from typing import List, Optional
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from env_helper import TEMP_PATH
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from get_robot_token import get_best_robot_token
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from git_helper import git_runner, is_shallow
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from github_helper import (
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GitHub,
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PullRequest,
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PullRequests,
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Repository,
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)
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from ssh import SSHKey
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class Labels:
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MUST_BACKPORT = "pr-must-backport"
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MUST_BACKPORT_CLOUD = "pr-must-backport-cloud"
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BACKPORT = "pr-backport"
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BACKPORTS_CREATED = "pr-backports-created"
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BACKPORTS_CREATED_CLOUD = "pr-backports-created-cloud"
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CHERRYPICK = "pr-cherrypick"
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DO_NOT_TEST = "do not test"
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class ReleaseBranch:
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CHERRYPICK_DESCRIPTION = """Original pull-request #{pr_number}
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This pull-request is a first step of an automated backporting.
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It contains changes similar to calling `git cherry-pick` locally.
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If you intend to continue backporting the changes, then resolve all conflicts if any.
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Otherwise, if you do not want to backport them, then just close this pull-request.
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The check results does not matter at this step - you can safely ignore them.
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### Note
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This pull-request will be merged automatically. Please, **do not merge it manually** \
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(but if you accidentally did, nothing bad will happen).
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### Troubleshooting
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#### If the PR was manually reopened after being closed
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If this PR is stuck (i.e. not automatically merged after one day), check {pr_url} for \
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`{backport_created_label}` *label* and delete it.
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Manually merging will do nothing. The `{backport_created_label}` *label* prevents the \
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original PR {pr_url} from being processed.
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#### If the conflicts were resolved in a wrong way
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If this cherry-pick PR is completely screwed by a wrong conflicts resolution, and you \
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want to recreate it:
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- delete the `{label_cherrypick}` label from the PR
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- delete this branch from the repository
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You also need to check the original PR {pr_url} for `{backport_created_label}`, and \
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delete if it's presented there
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"""
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BACKPORT_DESCRIPTION = """This pull-request is a last step of an automated \
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backporting.
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Treat it as a standard pull-request: look at the checks and resolve conflicts.
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Merge it only if you intend to backport changes to the target branch, otherwise just \
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close it.
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"""
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REMOTE = ""
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def __init__(
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self,
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name: str,
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pr: PullRequest,
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repo: Repository,
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backport_created_label: str = Labels.BACKPORTS_CREATED,
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):
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self.name = name
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self.pr = pr
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self.repo = repo
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self.cherrypick_branch = f"cherrypick/{name}/{pr.merge_commit_sha}"
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self.backport_branch = f"backport/{name}/{pr.number}"
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self.cherrypick_pr = None # type: Optional[PullRequest]
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self.backport_pr = None # type: Optional[PullRequest]
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self._backported = False
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self.backport_created_label = backport_created_label
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self.git_prefix = ( # All commits to cherrypick are done as robot-clickhouse
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"git -c user.email=robot-clickhouse@users.noreply.github.com "
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"-c user.name=robot-clickhouse -c commit.gpgsign=false"
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)
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self.pre_check()
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def pre_check(self):
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branch_updated = git_runner(
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f"git branch -a --contains={self.pr.merge_commit_sha} "
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f"{self.REMOTE}/{self.name}"
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)
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if branch_updated:
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self._backported = True
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def pop_prs(self, prs: PullRequests) -> None:
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"""the method processes all prs and pops the ReleaseBranch related prs"""
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to_pop = [] # type: List[int]
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for i, pr in enumerate(prs):
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if self.name not in pr.head.ref:
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continue
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if pr.head.ref.startswith(f"cherrypick/{self.name}"):
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self.cherrypick_pr = pr
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to_pop.append(i)
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elif pr.head.ref.startswith(f"backport/{self.name}"):
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self.backport_pr = pr
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to_pop.append(i)
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else:
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logging.error(
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"head ref of PR #%s isn't starting with known suffix",
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pr.number,
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)
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for i in reversed(to_pop):
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# Going from the tail to keep the order and pop greater index first
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prs.pop(i)
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def process( # pylint: disable=too-many-return-statements
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self, dry_run: bool
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) -> None:
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if self.backported:
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return
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if not self.cherrypick_pr:
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if dry_run:
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logging.info(
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"DRY RUN: Would create cherrypick PR for #%s", self.pr.number
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)
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return
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self.create_cherrypick()
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if self.backported:
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return
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if self.cherrypick_pr is not None:
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# Try to merge cherrypick instantly
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if self.cherrypick_pr.mergeable and self.cherrypick_pr.state != "closed":
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if dry_run:
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logging.info(
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"DRY RUN: Would merge cherry-pick PR for #%s", self.pr.number
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)
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return
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self.cherrypick_pr.merge()
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# The PR needs update, since PR.merge doesn't update the object
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self.cherrypick_pr.update()
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if self.cherrypick_pr.merged:
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if dry_run:
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logging.info(
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"DRY RUN: Would create backport PR for #%s", self.pr.number
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)
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return
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self.create_backport()
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return
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if self.cherrypick_pr.state == "closed":
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logging.info(
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"The cherrypick PR #%s for PR #%s is discarded",
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self.cherrypick_pr.number,
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self.pr.number,
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)
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self._backported = True
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return
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logging.info(
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"Cherrypick PR #%s for PR #%s have conflicts and unable to be merged",
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self.cherrypick_pr.number,
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self.pr.number,
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)
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self.ping_cherry_pick_assignees(dry_run)
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def create_cherrypick(self):
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# First, create backport branch:
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# Checkout release branch with discarding every change
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git_runner(f"{self.git_prefix} checkout -f {self.name}")
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# Create or reset backport branch
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git_runner(f"{self.git_prefix} checkout -B {self.backport_branch}")
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# Merge all changes from PR's the first parent commit w/o applying anything
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# It will allow to create a merge commit like it would be a cherry-pick
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first_parent = git_runner(f"git rev-parse {self.pr.merge_commit_sha}^1")
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git_runner(f"{self.git_prefix} merge -s ours --no-edit {first_parent}")
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# Second step, create cherrypick branch
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git_runner(
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f"{self.git_prefix} branch -f "
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f"{self.cherrypick_branch} {self.pr.merge_commit_sha}"
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)
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# Check if there are actually any changes between branches. If no, then no
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# other actions are required. It's possible when changes are backported
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# manually to the release branch already
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try:
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output = git_runner(
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f"{self.git_prefix} merge --no-commit --no-ff {self.cherrypick_branch}"
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)
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# 'up-to-date', 'up to date', who knows what else (╯°v°)╯ ^┻━┻
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if output.startswith("Already up") and output.endswith("date."):
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# The changes are already in the release branch, we are done here
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logging.info(
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"Release branch %s already contain changes from %s",
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self.name,
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self.pr.number,
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)
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self._backported = True
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return
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except CalledProcessError:
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# There are most probably conflicts, they'll be resolved in PR
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git_runner(f"{self.git_prefix} reset --merge")
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else:
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# There are changes to apply, so continue
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git_runner(f"{self.git_prefix} reset --merge")
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# Push, create the cherrypick PR, lable and assign it
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for branch in [self.cherrypick_branch, self.backport_branch]:
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git_runner(f"{self.git_prefix} push -f {self.REMOTE} {branch}:{branch}")
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self.cherrypick_pr = self.repo.create_pull(
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title=f"Cherry pick #{self.pr.number} to {self.name}: {self.pr.title}",
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body=self.CHERRYPICK_DESCRIPTION.format(
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pr_number=self.pr.number,
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pr_url=self.pr.html_url,
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backport_created_label=self.backport_created_label,
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label_cherrypick=Labels.CHERRYPICK,
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),
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base=self.backport_branch,
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head=self.cherrypick_branch,
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)
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self.cherrypick_pr.add_to_labels(Labels.CHERRYPICK)
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self.cherrypick_pr.add_to_labels(Labels.DO_NOT_TEST)
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self._assign_new_pr(self.cherrypick_pr)
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# update cherrypick PR to get the state for PR.mergable
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self.cherrypick_pr.update()
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def create_backport(self):
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assert self.cherrypick_pr is not None
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# Checkout the backport branch from the remote and make all changes to
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# apply like they are only one cherry-pick commit on top of release
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logging.info("Creating backport for PR #%s", self.pr.number)
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git_runner(f"{self.git_prefix} checkout -f {self.backport_branch}")
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git_runner(
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f"{self.git_prefix} pull --ff-only {self.REMOTE} {self.backport_branch}"
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)
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merge_base = git_runner(
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f"{self.git_prefix} merge-base "
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f"{self.REMOTE}/{self.name} {self.backport_branch}"
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)
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git_runner(f"{self.git_prefix} reset --soft {merge_base}")
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title = f"Backport #{self.pr.number} to {self.name}: {self.pr.title}"
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git_runner(f"{self.git_prefix} commit --allow-empty -F -", input=title)
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# Push with force, create the backport PR, lable and assign it
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git_runner(
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f"{self.git_prefix} push -f {self.REMOTE} "
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f"{self.backport_branch}:{self.backport_branch}"
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)
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self.backport_pr = self.repo.create_pull(
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title=title,
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body=f"Original pull-request {self.pr.html_url}\n"
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f"Cherry-pick pull-request #{self.cherrypick_pr.number}\n\n"
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f"{self.BACKPORT_DESCRIPTION}",
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base=self.name,
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head=self.backport_branch,
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)
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self.backport_pr.add_to_labels(Labels.BACKPORT)
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self._assign_new_pr(self.backport_pr)
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def ping_cherry_pick_assignees(self, dry_run: bool) -> None:
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assert self.cherrypick_pr is not None
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logging.info(
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"Checking if cherry-pick PR #%s needs to be pinged",
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self.cherrypick_pr.number,
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)
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# The `updated_at` is Optional[datetime]
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cherrypick_updated_ts = (
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self.cherrypick_pr.updated_at or datetime.now()
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).timestamp()
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since_updated = int(datetime.now().timestamp() - cherrypick_updated_ts)
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since_updated_str = (
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f"{since_updated // 86400}d{since_updated // 3600}"
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f"h{since_updated // 60 % 60}m{since_updated % 60}s"
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)
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if since_updated < 86400:
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logging.info(
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"The cherry-pick PR was updated %s ago, "
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"waiting for the next running",
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since_updated_str,
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)
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return
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assignees = ", ".join(f"@{user.login}" for user in self.cherrypick_pr.assignees)
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comment_body = (
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f"Dear {assignees}, the PR is not updated for {since_updated_str}. "
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"Please, either resolve the conflicts, or close it to finish "
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f"the backport process of #{self.pr.number}"
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)
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if dry_run:
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logging.info(
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"DRY RUN: would comment the cherry-pick PR #%s:\n",
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self.cherrypick_pr.number,
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)
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return
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self.cherrypick_pr.create_issue_comment(comment_body)
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def _assign_new_pr(self, new_pr: PullRequest) -> None:
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"""Assign `new_pr` to author, merger and assignees of an original PR"""
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# It looks there some race when multiple .add_to_assignees are executed,
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# so we'll add all at once
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assignees = [self.pr.user, self.pr.merged_by]
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if self.pr.assignees:
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assignees.extend(self.pr.assignees)
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logging.info(
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"Assing #%s to author and assignees of the original PR: %s",
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new_pr.number,
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", ".join(user.login for user in assignees),
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)
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new_pr.add_to_assignees(*assignees)
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@property
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def backported(self) -> bool:
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return self._backported or self.backport_pr is not None
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def __repr__(self):
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return self.name
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class Backport:
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def __init__(
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self,
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gh: GitHub,
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repo: str,
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fetch_from: Optional[str],
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dry_run: bool,
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must_create_backport_label: str,
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backport_created_label: str,
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):
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self.gh = gh
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self._repo_name = repo
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self._fetch_from = fetch_from
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self.dry_run = dry_run
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self.must_create_backport_label = must_create_backport_label
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self.backport_created_label = backport_created_label
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self._remote = ""
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self._remote_line = ""
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self._repo = None # type: Optional[Repository]
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self.release_prs = [] # type: PullRequests
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self.release_branches = [] # type: List[str]
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self.labels_to_backport = [] # type: List[str]
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self.prs_for_backport = [] # type: PullRequests
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self.error = None # type: Optional[Exception]
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@property
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def remote_line(self) -> str:
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if not self._remote_line:
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# lines of "origin git@github.com:ClickHouse/ClickHouse.git (fetch)"
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remotes = git_runner("git remote -v").split("\n")
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# We need the first word from the first matching result
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self._remote_line = next(
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iter(
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remote
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for remote in remotes
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if f"github.com/{self._repo_name}" in remote # https
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or f"github.com:{self._repo_name}" in remote # ssh
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)
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)
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return self._remote_line
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@property
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def remote(self) -> str:
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if not self._remote:
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self._remote = self.remote_line.split(maxsplit=1)[0]
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git_runner(f"git fetch {self._remote}")
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ReleaseBranch.REMOTE = self._remote
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return self._remote
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@property
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def is_remote_ssh(self) -> bool:
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return "github.com:" in self.remote_line
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def receive_release_prs(self):
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logging.info("Getting release PRs")
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self.release_prs = self.gh.get_release_pulls(self._repo_name)
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self.release_branches = [pr.head.ref for pr in self.release_prs]
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self.labels_to_backport = [
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f"v{branch}-must-backport" for branch in self.release_branches
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]
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if self._fetch_from:
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logging.info("Fetching from %s", self._fetch_from)
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fetch_from_repo = self.gh.get_repo(self._fetch_from)
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git_runner(
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f"git fetch {fetch_from_repo.ssh_url if self.is_remote_ssh else fetch_from_repo.clone_url} {fetch_from_repo.default_branch} --no-tags"
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)
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logging.info("Active releases: %s", ", ".join(self.release_branches))
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def update_local_release_branches(self):
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logging.info("Update local release branches")
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branches = git_runner("git branch").split()
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for branch in self.release_branches:
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if branch not in branches:
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# the local branch is not exist, so continue
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continue
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local_ref = git_runner(f"git rev-parse {branch}")
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remote_ref = git_runner(f"git rev-parse {self.remote}/{branch}")
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if local_ref == remote_ref:
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# Do not need to update, continue
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continue
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logging.info("Resetting %s to %s/%s", branch, self.remote, branch)
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git_runner(f"git branch -f {branch} {self.remote}/{branch}")
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def receive_prs_for_backport(self):
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# The commits in the oldest open release branch
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oldest_branch_commits = git_runner(
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"git log --no-merges --format=%H --reverse "
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f"{self.remote}/{self.default_branch}..{self.remote}/{self.release_branches[0]}"
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)
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# The first commit is the one we are looking for
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since_commit = oldest_branch_commits.split("\n", 1)[0]
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since_date = date.fromisoformat(
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git_runner.run(f"git log -1 --format=format:%cs {since_commit}")
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)
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# To not have a possible TZ issues
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tomorrow = date.today() + timedelta(days=1)
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logging.info("Receive PRs suppose to be backported")
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self.prs_for_backport = self.gh.get_pulls_from_search(
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query=f"type:pr repo:{self._fetch_from} -label:{self.backport_created_label}",
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label=",".join(self.labels_to_backport + [self.must_create_backport_label]),
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merged=[since_date, tomorrow],
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)
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logging.info(
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"PRs to be backported:\n %s",
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|
"\n ".join([pr.html_url for pr in self.prs_for_backport]),
|
|
)
|
|
|
|
def process_backports(self):
|
|
for pr in self.prs_for_backport:
|
|
try:
|
|
self.process_pr(pr)
|
|
except Exception as e:
|
|
logging.error(
|
|
"During processing the PR #%s error occured: %s", pr.number, e
|
|
)
|
|
self.error = e
|
|
|
|
def process_pr(self, pr: PullRequest) -> None:
|
|
pr_labels = [label.name for label in pr.labels]
|
|
if self.must_create_backport_label in pr_labels:
|
|
branches = [
|
|
ReleaseBranch(br, pr, self.repo, self.backport_created_label)
|
|
for br in self.release_branches
|
|
] # type: List[ReleaseBranch]
|
|
else:
|
|
branches = [
|
|
ReleaseBranch(br, pr, self.repo, self.backport_created_label)
|
|
for br in [
|
|
label.split("-", 1)[0][1:] # v21.8-must-backport
|
|
for label in pr_labels
|
|
if label in self.labels_to_backport
|
|
]
|
|
]
|
|
if not branches:
|
|
# This is definitely some error. There must be at least one branch
|
|
# It also make the whole program exit code non-zero
|
|
self.error = Exception(
|
|
f"There are no branches to backport PR #{pr.number}, logical error"
|
|
)
|
|
raise self.error
|
|
|
|
logging.info(
|
|
" PR #%s is suppose to be backported to %s",
|
|
pr.number,
|
|
", ".join(map(str, branches)),
|
|
)
|
|
# All PRs for cherrypick and backport branches as heads
|
|
query_suffix = " ".join(
|
|
[
|
|
f"head:{branch.backport_branch} head:{branch.cherrypick_branch}"
|
|
for branch in branches
|
|
]
|
|
)
|
|
bp_cp_prs = self.gh.get_pulls_from_search(
|
|
query=f"type:pr repo:{self._repo_name} {query_suffix}",
|
|
label=f"{Labels.BACKPORT},{Labels.CHERRYPICK}",
|
|
)
|
|
for br in branches:
|
|
br.pop_prs(bp_cp_prs)
|
|
|
|
if bp_cp_prs:
|
|
# This is definitely some error. All prs must be consumed by
|
|
# branches with ReleaseBranch.pop_prs. It also makes the whole
|
|
# program exit code non-zero
|
|
self.error = Exception(
|
|
"The following PRs are not filtered by release branches:\n"
|
|
"\n".join(map(str, bp_cp_prs))
|
|
)
|
|
raise self.error
|
|
|
|
if all(br.backported for br in branches):
|
|
# Let's check if the PR is already backported
|
|
self.mark_pr_backported(pr)
|
|
return
|
|
|
|
for br in branches:
|
|
br.process(self.dry_run)
|
|
|
|
if all(br.backported for br in branches):
|
|
# And check it after the running
|
|
self.mark_pr_backported(pr)
|
|
|
|
def mark_pr_backported(self, pr: PullRequest) -> None:
|
|
if self.dry_run:
|
|
logging.info("DRY RUN: would mark PR #%s as done", pr.number)
|
|
return
|
|
pr.add_to_labels(self.backport_created_label)
|
|
logging.info(
|
|
"PR #%s is successfully labeled with `%s`",
|
|
pr.number,
|
|
self.backport_created_label,
|
|
)
|
|
|
|
@property
|
|
def repo(self) -> Repository:
|
|
if self._repo is None:
|
|
self._repo = self.gh.get_repo(self._repo_name)
|
|
return self._repo
|
|
|
|
@property
|
|
def default_branch(self) -> str:
|
|
return self.repo.default_branch
|
|
|
|
|
|
def parse_args():
|
|
parser = argparse.ArgumentParser("Create cherry-pick and backport PRs")
|
|
parser.add_argument("--token", help="github token, if not set, used from smm")
|
|
parser.add_argument(
|
|
"--repo", default="ClickHouse/ClickHouse", help="repo owner/name"
|
|
)
|
|
parser.add_argument(
|
|
"--from-repo",
|
|
default="ClickHouse/ClickHouse",
|
|
help="if set, the commits will be taken from this repo, but PRs will be created in the main repo",
|
|
)
|
|
parser.add_argument("--dry-run", action="store_true", help="do not create anything")
|
|
|
|
parser.add_argument(
|
|
"--must-create-backport-label",
|
|
default=Labels.MUST_BACKPORT,
|
|
choices=(Labels.MUST_BACKPORT, Labels.MUST_BACKPORT_CLOUD),
|
|
help="label to filter PRs to backport",
|
|
)
|
|
|
|
parser.add_argument(
|
|
"--backport-created-label",
|
|
default=Labels.BACKPORTS_CREATED,
|
|
choices=(Labels.BACKPORTS_CREATED, Labels.BACKPORTS_CREATED_CLOUD),
|
|
help="label to mark PRs as backported",
|
|
)
|
|
|
|
parser.add_argument(
|
|
"--debug-helpers",
|
|
action="store_true",
|
|
help="add debug logging for git_helper and github_helper",
|
|
)
|
|
return parser.parse_args()
|
|
|
|
|
|
@contextmanager
|
|
def clear_repo():
|
|
orig_ref = git_runner("git branch --show-current") or git_runner(
|
|
"git rev-parse HEAD"
|
|
)
|
|
try:
|
|
yield
|
|
except (Exception, KeyboardInterrupt):
|
|
git_runner(f"git checkout -f {orig_ref}")
|
|
raise
|
|
else:
|
|
git_runner(f"git checkout -f {orig_ref}")
|
|
|
|
|
|
@contextmanager
|
|
def stash():
|
|
# diff.ignoreSubmodules=all don't show changed submodules
|
|
need_stash = bool(git_runner("git -c diff.ignoreSubmodules=all diff HEAD"))
|
|
if need_stash:
|
|
git_runner("git stash push --no-keep-index -m 'running cherry_pick.py'")
|
|
try:
|
|
with clear_repo():
|
|
yield
|
|
except (Exception, KeyboardInterrupt):
|
|
if need_stash:
|
|
git_runner("git stash pop")
|
|
raise
|
|
else:
|
|
if need_stash:
|
|
git_runner("git stash pop")
|
|
|
|
|
|
def main():
|
|
temp_path = Path(TEMP_PATH)
|
|
temp_path.mkdir(parents=True, exist_ok=True)
|
|
|
|
args = parse_args()
|
|
if args.debug_helpers:
|
|
logging.getLogger("github_helper").setLevel(logging.DEBUG)
|
|
logging.getLogger("git_helper").setLevel(logging.DEBUG)
|
|
token = args.token or get_best_robot_token()
|
|
|
|
gh = GitHub(token, create_cache_dir=False)
|
|
bp = Backport(
|
|
gh,
|
|
args.repo,
|
|
args.from_repo,
|
|
args.dry_run,
|
|
args.must_create_backport_label,
|
|
args.backport_created_label,
|
|
)
|
|
# https://github.com/python/mypy/issues/3004
|
|
bp.gh.cache_path = temp_path / "gh_cache"
|
|
bp.receive_release_prs()
|
|
bp.update_local_release_branches()
|
|
bp.receive_prs_for_backport()
|
|
bp.process_backports()
|
|
if bp.error is not None:
|
|
logging.error("Finished successfully, but errors occured!")
|
|
raise bp.error
|
|
|
|
|
|
if __name__ == "__main__":
|
|
logging.getLogger().setLevel(level=logging.INFO)
|
|
|
|
assert not is_shallow()
|
|
with stash():
|
|
if os.getenv("ROBOT_CLICKHOUSE_SSH_KEY", ""):
|
|
with SSHKey("ROBOT_CLICKHOUSE_SSH_KEY"):
|
|
main()
|
|
else:
|
|
main()
|