749 lines
25 KiB
Python
749 lines
25 KiB
Python
import json
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import multiprocessing
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import os
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import sys
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import uuid
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from collections import defaultdict
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from collections.abc import Generator
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from dataclasses import dataclass
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from pathlib import Path
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from typing import TYPE_CHECKING, Any
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from buildbot.configurators import ConfiguratorBase
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from buildbot.plugins import reporters, schedulers, secrets, steps, util, worker
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from buildbot.process import buildstep, logobserver, remotecommand
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from buildbot.process.project import Project
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from buildbot.process.properties import Interpolate, Properties
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from buildbot.process.results import ALL_RESULTS, statusToString
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from buildbot.steps.trigger import Trigger
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from buildbot.util import asyncSleep
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from buildbot.www.authz.endpointmatchers import EndpointMatcherBase, Match
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from buildbot.www.oauth2 import OAuth2Auth
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from buildbot.changes.gerritchangesource import GerritChangeSource
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if TYPE_CHECKING:
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from buildbot.process.log import Log
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from twisted.internet import defer, threads
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from twisted.logger import Logger
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from twisted.python.failure import Failure
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from .github_projects import (
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slugify_project_name,
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)
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SKIPPED_BUILDER_NAME = "skipped-builds"
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log = Logger()
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class LixSystemsOAuth2(OAuth2Auth):
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name = 'Lix'
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faIcon = 'fa-login'
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resourceEndpoint = "https://identity.lix.systems"
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# is passing scope necessary?
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authUri = 'https://identity.lix.systems/realms/lix-project/protocol/openid-connect/auth'
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tokenUri = 'https://identity.lix.systems/realms/lix-project/protocol/openid-connect/token'
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class BuildbotNixError(Exception):
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pass
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@dataclass
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class GerritProject:
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# `project` field.
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name: str
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class BuildTrigger(Trigger):
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"""Dynamic trigger that creates a build for every attribute."""
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def __init__(
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self,
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builds_scheduler: str,
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skipped_builds_scheduler: str,
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jobs: list[dict[str, Any]],
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**kwargs: Any,
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) -> None:
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if "name" not in kwargs:
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kwargs["name"] = "trigger"
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self.jobs = jobs
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self.config = None
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self.builds_scheduler = builds_scheduler
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self.skipped_builds_scheduler = skipped_builds_scheduler
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Trigger.__init__(
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self,
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waitForFinish=True,
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schedulerNames=[builds_scheduler, skipped_builds_scheduler],
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haltOnFailure=True,
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flunkOnFailure=True,
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sourceStamps=[],
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alwaysUseLatest=False,
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updateSourceStamp=False,
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**kwargs,
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)
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def createTriggerProperties(self, props: Any) -> Any: # noqa: N802
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return props
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def getSchedulersAndProperties(self) -> list[tuple[str, Properties]]: # noqa: N802
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build_props = self.build.getProperties()
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source = f"nix-eval-lix"
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triggered_schedulers = []
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for job in self.jobs:
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attr = job.get("attr", "eval-error")
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name = attr
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name = f"checks.{name}"
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error = job.get("error")
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props = Properties()
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props.setProperty("virtual_builder_name", name, source)
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props.setProperty("status_name", f"nix-build .#checks.{attr}", source)
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props.setProperty("virtual_builder_tags", "", source)
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if error is not None:
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props.setProperty("error", error, source)
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triggered_schedulers.append((self.skipped_builds_scheduler, props))
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continue
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if job.get("isCached"):
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triggered_schedulers.append((self.skipped_builds_scheduler, props))
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continue
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drv_path = job.get("drvPath")
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system = job.get("system")
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out_path = job.get("outputs", {}).get("out")
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build_props.setProperty(f"{attr}-out_path", out_path, source)
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build_props.setProperty(f"{attr}-drv_path", drv_path, source)
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props.setProperty("attr", attr, source)
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props.setProperty("system", system, source)
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props.setProperty("drv_path", drv_path, source)
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props.setProperty("out_path", out_path, source)
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# we use this to identify builds when running a retry
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props.setProperty("build_uuid", str(uuid.uuid4()), source)
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triggered_schedulers.append((self.builds_scheduler, props))
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return triggered_schedulers
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def getCurrentSummary(self) -> dict[str, str]: # noqa: N802
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"""The original build trigger will the generic builder name `nix-build` in this case, which is not helpful"""
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if not self.triggeredNames:
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return {"step": "running"}
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summary = []
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if self._result_list:
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for status in ALL_RESULTS:
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count = self._result_list.count(status)
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if count:
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summary.append(
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f"{self._result_list.count(status)} {statusToString(status, count)}",
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)
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return {"step": f"({', '.join(summary)})"}
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class NixEvalCommand(buildstep.ShellMixin, steps.BuildStep):
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"""Parses the output of `nix-eval-jobs` and triggers a `nix-build` build for
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every attribute.
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"""
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def __init__(self, supported_systems: list[str], **kwargs: Any) -> None:
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kwargs = self.setupShellMixin(kwargs)
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super().__init__(**kwargs)
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self.observer = logobserver.BufferLogObserver()
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self.addLogObserver("stdio", self.observer)
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self.supported_systems = supported_systems
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@defer.inlineCallbacks
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def run(self) -> Generator[Any, object, Any]:
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# run nix-eval-jobs --flake .#checks to generate the dict of stages
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cmd: remotecommand.RemoteCommand = yield self.makeRemoteShellCommand()
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yield self.runCommand(cmd)
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# if the command passes extract the list of stages
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result = cmd.results()
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if result == util.SUCCESS:
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# create a ShellCommand for each stage and add them to the build
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jobs = []
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for line in self.observer.getStdout().split("\n"):
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if line != "":
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try:
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job = json.loads(line)
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except json.JSONDecodeError as e:
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msg = f"Failed to parse line: {line}"
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raise BuildbotNixError(msg) from e
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jobs.append(job)
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build_props = self.build.getProperties()
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filtered_jobs = []
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for job in jobs:
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system = job.get("system")
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if not system or system in self.supported_systems: # report eval errors
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filtered_jobs.append(job)
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self.build.addStepsAfterCurrentStep(
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[
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BuildTrigger(
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builds_scheduler=f"lix-nix-build",
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skipped_builds_scheduler=f"lix-nix-skipped-build",
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name="build flake",
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jobs=filtered_jobs,
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),
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],
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)
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return result
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# FIXME this leaks memory... but probably not enough that we care
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class RetryCounter:
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def __init__(self, retries: int) -> None:
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self.builds: dict[uuid.UUID, int] = defaultdict(lambda: retries)
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def retry_build(self, build_id: uuid.UUID) -> int:
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retries = self.builds[build_id]
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if retries > 1:
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self.builds[build_id] = retries - 1
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return retries
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return 0
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# For now we limit this to two. Often this allows us to make the error log
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# shorter because we won't see the logs for all previous succeeded builds
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RETRY_COUNTER = RetryCounter(retries=2)
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class EvalErrorStep(steps.BuildStep):
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"""Shows the error message of a failed evaluation."""
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@defer.inlineCallbacks
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def run(self) -> Generator[Any, object, Any]:
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error = self.getProperty("error")
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attr = self.getProperty("attr")
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# show eval error
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error_log: Log = yield self.addLog("nix_error")
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error_log.addStderr(f"{attr} failed to evaluate:\n{error}")
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return util.FAILURE
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class NixBuildCommand(buildstep.ShellMixin, steps.BuildStep):
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"""Builds a nix derivation."""
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def __init__(self, **kwargs: Any) -> None:
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kwargs = self.setupShellMixin(kwargs)
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super().__init__(**kwargs)
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@defer.inlineCallbacks
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def run(self) -> Generator[Any, object, Any]:
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# run `nix build`
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cmd: remotecommand.RemoteCommand = yield self.makeRemoteShellCommand()
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yield self.runCommand(cmd)
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res = cmd.results()
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if res == util.FAILURE:
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retries = RETRY_COUNTER.retry_build(self.getProperty("build_uuid"))
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if retries > 0:
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return util.RETRY
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return res
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class UpdateBuildOutput(steps.BuildStep):
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"""Updates store paths in a public www directory.
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This is useful to prefetch updates without having to evaluate
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on the target machine.
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"""
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def __init__(self, path: Path, **kwargs: Any) -> None:
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super().__init__(**kwargs)
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self.path = path
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def run(self) -> Generator[Any, object, Any]:
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props = self.build.getProperties()
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if props.getProperty("branch") != props.getProperty(
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"github.repository.default_branch",
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):
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return util.SKIPPED
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attr = Path(props.getProperty("attr")).name
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out_path = props.getProperty("out_path")
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# XXX don't hardcode this
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self.path.mkdir(parents=True, exist_ok=True)
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(self.path / attr).write_text(out_path)
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return util.SUCCESS
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# The builtin retry mechanism doesn't seem to work for github,
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# since github is sometimes not delivering the pull request ref fast enough.
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class GitWithRetry(steps.Git):
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@defer.inlineCallbacks
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def run_vc(
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self,
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branch: str,
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revision: str,
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patch: str,
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) -> Generator[Any, object, Any]:
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retry_counter = 0
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while True:
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try:
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res = yield super().run_vc(branch, revision, patch)
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except Exception as e: # noqa: BLE001
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retry_counter += 1
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if retry_counter == 3:
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msg = "Failed to clone"
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raise BuildbotNixError(msg) from e
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log: Log = yield self.addLog("log")
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yield log.addStderr(f"Retrying git clone (error: {e})\n")
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yield asyncSleep(2 << retry_counter) # 2, 4, 8
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else:
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return res
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def nix_eval_config(
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project: GerritProject,
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gerrit_private_key: str,
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worker_names: list[str],
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supported_systems: list[str],
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eval_lock: util.MasterLock,
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worker_count: int,
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max_memory_size: int,
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) -> util.BuilderConfig:
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"""Uses nix-eval-jobs to evaluate hydraJobs from flake.nix in parallel.
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For each evaluated attribute a new build pipeline is started.
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"""
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factory = util.BuildFactory()
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# check out the source
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factory.addStep(
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steps.Gerrit(
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repourl="ssh://buildbot@gerrit.lix.systems:2022/lix",
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mode="full",
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retry=[60, 60],
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timeout=3600,
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sshPrivateKey=gerrit_private_key
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),
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)
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drv_gcroots_dir = util.Interpolate(
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"/nix/var/nix/gcroots/per-user/buildbot-worker/%(prop:project)s/drvs/",
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)
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factory.addStep(
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NixEvalCommand(
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env={},
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name="evaluate flake",
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supported_systems=supported_systems,
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command=[
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"nix-eval-jobs",
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"--workers",
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str(worker_count),
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"--max-memory-size",
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str(max_memory_size),
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"--option",
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"accept-flake-config",
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"true",
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"--gc-roots-dir",
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drv_gcroots_dir,
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"--force-recurse",
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"--check-cache-status",
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"--flake",
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".#checks",
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],
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haltOnFailure=True,
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locks=[eval_lock.access("exclusive")],
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),
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)
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factory.addStep(
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steps.ShellCommand(
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name="Cleanup drv paths",
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command=[
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"rm",
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"-rf",
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drv_gcroots_dir,
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],
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),
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)
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return util.BuilderConfig(
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name=f"{project.name}/nix-eval",
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workernames=worker_names,
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project=project.name,
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factory=factory,
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properties=dict(status_name="nix-eval"),
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)
|
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|
|
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@dataclass
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class CachixConfig:
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name: str
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signing_key_secret_name: str | None = None
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auth_token_secret_name: str | None = None
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|
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def cachix_env(self) -> dict[str, str]:
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env = {}
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if self.signing_key_secret_name is not None:
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env["CACHIX_SIGNING_KEY"] = util.Secret(self.signing_key_secret_name)
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if self.auth_token_secret_name is not None:
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env["CACHIX_AUTH_TOKEN"] = util.Secret(self.auth_token_secret_name)
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return env
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|
|
|
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def nix_build_config(
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project: GerritProject,
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worker_names: list[str],
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cachix: CachixConfig | None = None,
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outputs_path: Path | None = None,
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) -> util.BuilderConfig:
|
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"""Builds one nix flake attribute."""
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factory = util.BuildFactory()
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factory.addStep(
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NixBuildCommand(
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env={},
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name="Build flake attr",
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command=[
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"nix",
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"build",
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"-L",
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"--option",
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"keep-going",
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"true",
|
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"--option",
|
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# stop stuck builds after 20 minutes
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"--max-silent-time",
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str(60 * 20),
|
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"--accept-flake-config",
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"--out-link",
|
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util.Interpolate("result-%(prop:attr)s"),
|
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util.Interpolate("%(prop:drv_path)s^*"),
|
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],
|
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# 3 hours, defaults to 20 minutes
|
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# We increase this over the default since the build output might end up in a different `nix build`.
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timeout=60 * 60 * 3,
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haltOnFailure=True,
|
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),
|
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)
|
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if cachix:
|
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factory.addStep(
|
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steps.ShellCommand(
|
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name="Upload cachix",
|
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env=cachix.cachix_env(),
|
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command=[
|
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"cachix",
|
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"push",
|
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cachix.name,
|
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util.Interpolate("result-%(prop:attr)s"),
|
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],
|
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),
|
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)
|
|
|
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factory.addStep(
|
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steps.ShellCommand(
|
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name="Register gcroot",
|
|
command=[
|
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"nix-store",
|
|
"--add-root",
|
|
# FIXME: cleanup old build attributes
|
|
util.Interpolate(
|
|
"/nix/var/nix/gcroots/per-user/buildbot-worker/%(prop:project)s/%(prop:attr)s",
|
|
),
|
|
"-r",
|
|
util.Property("out_path"),
|
|
],
|
|
doStepIf=lambda s: s.getProperty("branch")
|
|
== s.getProperty("github.repository.default_branch"),
|
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),
|
|
)
|
|
factory.addStep(
|
|
steps.ShellCommand(
|
|
name="Delete temporary gcroots",
|
|
command=["rm", "-f", util.Interpolate("result-%(prop:attr)s")],
|
|
),
|
|
)
|
|
if outputs_path is not None:
|
|
factory.addStep(
|
|
UpdateBuildOutput(
|
|
name="Update build output",
|
|
path=outputs_path,
|
|
),
|
|
)
|
|
return util.BuilderConfig(
|
|
name=f"{project.name}/nix-build",
|
|
project=project.name,
|
|
workernames=worker_names,
|
|
collapseRequests=False,
|
|
env={},
|
|
factory=factory,
|
|
)
|
|
|
|
|
|
def nix_skipped_build_config(
|
|
project: GerritProject,
|
|
worker_names: list[str],
|
|
) -> util.BuilderConfig:
|
|
"""Dummy builder that is triggered when a build is skipped."""
|
|
factory = util.BuildFactory()
|
|
factory.addStep(
|
|
EvalErrorStep(
|
|
name="Nix evaluation",
|
|
doStepIf=lambda s: s.getProperty("error"),
|
|
hideStepIf=lambda _, s: not s.getProperty("error"),
|
|
),
|
|
)
|
|
|
|
# This is just a dummy step showing the cached build
|
|
factory.addStep(
|
|
steps.BuildStep(
|
|
name="Nix build (cached)",
|
|
doStepIf=lambda _: False,
|
|
hideStepIf=lambda _, s: s.getProperty("error"),
|
|
),
|
|
)
|
|
return util.BuilderConfig(
|
|
name=f"{project.name}/nix-skipped-build",
|
|
project=project.name,
|
|
workernames=worker_names,
|
|
collapseRequests=False,
|
|
env={},
|
|
factory=factory,
|
|
)
|
|
|
|
|
|
def read_secret_file(secret_name: str) -> str:
|
|
directory = os.environ.get("CREDENTIALS_DIRECTORY")
|
|
if directory is None:
|
|
print("directory not set", file=sys.stderr)
|
|
sys.exit(1)
|
|
return Path(directory).joinpath(secret_name).read_text().rstrip()
|
|
|
|
|
|
|
|
def config_for_project(
|
|
config: dict[str, Any],
|
|
project: GerritProject,
|
|
worker_names: list[str],
|
|
nix_supported_systems: list[str],
|
|
nix_eval_worker_count: int,
|
|
nix_eval_max_memory_size: int,
|
|
eval_lock: util.MasterLock,
|
|
cachix: CachixConfig | None = None,
|
|
outputs_path: Path | None = None,
|
|
) -> Project:
|
|
config["projects"].append(Project(project.name))
|
|
config["schedulers"].extend(
|
|
[
|
|
# build everything pertaining to a project
|
|
# TODO(raito): will this catch also post-merge? we don't really care about that… do we?
|
|
schedulers.SingleBranchScheduler(
|
|
name=f"{project.name}-changes",
|
|
change_filter=util.ChangeFilter(
|
|
project=project.name,
|
|
),
|
|
builderNames=[f"{project.name}/nix-eval"],
|
|
),
|
|
# this is triggered from `nix-eval`
|
|
schedulers.Triggerable(
|
|
name=f"{project.name}-nix-build",
|
|
builderNames=[f"{project.name}/nix-build"],
|
|
),
|
|
# this is triggered from `nix-eval` when the build is skipped
|
|
schedulers.Triggerable(
|
|
name=f"{project.name}-nix-skipped-build",
|
|
builderNames=[f"{project.name}/nix-skipped-build"],
|
|
),
|
|
# allow to manually trigger a nix-build
|
|
schedulers.ForceScheduler(
|
|
name=f"{project.name}-force",
|
|
builderNames=[f"{project.name}/nix-eval"],
|
|
properties=[
|
|
util.StringParameter(
|
|
name="project",
|
|
label="Name of the Gerrit repository.",
|
|
default=project.name,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
)
|
|
gerrit_private_key = None
|
|
with open('/var/lib/buildbot/master/id_gerrit', 'r') as f:
|
|
gerrit_private_key = f.read()
|
|
|
|
if gerrit_private_key is None:
|
|
raise RuntimeError('No gerrit private key to fetch the repositories')
|
|
|
|
config["builders"].extend(
|
|
[
|
|
# Since all workers run on the same machine, we only assign one of them to do the evaluation.
|
|
# This should prevent exessive memory usage.
|
|
nix_eval_config(
|
|
project,
|
|
gerrit_private_key,
|
|
worker_names,
|
|
supported_systems=nix_supported_systems,
|
|
worker_count=nix_eval_worker_count,
|
|
max_memory_size=nix_eval_max_memory_size,
|
|
eval_lock=eval_lock,
|
|
),
|
|
nix_build_config(
|
|
project,
|
|
worker_names,
|
|
cachix=cachix,
|
|
outputs_path=outputs_path,
|
|
),
|
|
nix_skipped_build_config(project, [SKIPPED_BUILDER_NAME]),
|
|
],
|
|
)
|
|
|
|
|
|
class PeriodicWithStartup(schedulers.Periodic):
|
|
def __init__(self, *args: Any, run_on_startup: bool = False, **kwargs: Any) -> None:
|
|
super().__init__(*args, **kwargs)
|
|
self.run_on_startup = run_on_startup
|
|
|
|
@defer.inlineCallbacks
|
|
def activate(self) -> Generator[Any, object, Any]:
|
|
if self.run_on_startup:
|
|
yield self.setState("last_build", None)
|
|
yield super().activate()
|
|
|
|
def gerritReviewCB(builderName, build, result, master, arg):
|
|
if result == util.RETRY:
|
|
return dict()
|
|
|
|
message = "Buildbot finished compiling your patchset\n"
|
|
message += "on configuration: %s\n" % builderName
|
|
message += "The result is: %s\n" % util.Results[result].upper()
|
|
|
|
if arg:
|
|
message += "\nFor more details visit:\n"
|
|
message += build['url'] + "\n"
|
|
|
|
if result == util.SUCCESS:
|
|
verified = 1
|
|
else:
|
|
verified = -1
|
|
|
|
return dict(message=message, labels={'Verified': verified})
|
|
|
|
def gerritStartCB(builderName, build, arg):
|
|
message = "Buildbot started compiling your patchset\n"
|
|
message += "on configuration: %s\n" % builderName
|
|
message += "See your build here: %s" % build['url']
|
|
|
|
return dict(message=message)
|
|
|
|
def gerritSummaryCB(buildInfoList, results, status, arg):
|
|
success = False
|
|
failure = False
|
|
|
|
msgs = []
|
|
|
|
for buildInfo in buildInfoList:
|
|
msg = "Builder %(name)s %(resultText)s (%(text)s)" % buildInfo
|
|
link = buildInfo.get('url', None)
|
|
if link:
|
|
msg += " - " + link
|
|
else:
|
|
msg += "."
|
|
|
|
msgs.append(msg)
|
|
|
|
if buildInfo['result'] == util.SUCCESS:
|
|
success = True
|
|
else:
|
|
failure = True
|
|
|
|
if success and not failure:
|
|
verified = 1
|
|
else:
|
|
verified = -1
|
|
|
|
return dict(message='\n\n'.join(msgs),
|
|
labels={
|
|
'Verified': verified
|
|
})
|
|
|
|
class GerritNixConfigurator(ConfiguratorBase):
|
|
"""Janitor is a configurator which create a Janitor Builder with all needed Janitor steps"""
|
|
|
|
def __init__(
|
|
self,
|
|
# Shape of this file: [ { "name": "<worker-name>", "pass": "<worker-password>", "cores": "<cpu-cores>" } ]
|
|
gerrit_server: str,
|
|
gerrit_user: str,
|
|
gerrit_port: int,
|
|
gerrit_sshkey_path: str,
|
|
url: str,
|
|
nix_supported_systems: list[str],
|
|
nix_eval_worker_count: int | None,
|
|
nix_eval_max_memory_size: int,
|
|
nix_workers_secret_name: str = "buildbot-nix-workers", # noqa: S107
|
|
cachix: CachixConfig | None = None,
|
|
outputs_path: str | None = None,
|
|
) -> None:
|
|
super().__init__()
|
|
self.gerrit_server = gerrit_server
|
|
self.gerrit_user = gerrit_user
|
|
self.gerrit_port = gerrit_port
|
|
self.nix_workers_secret_name = nix_workers_secret_name
|
|
self.nix_eval_max_memory_size = nix_eval_max_memory_size
|
|
self.nix_eval_worker_count = nix_eval_worker_count
|
|
self.nix_supported_systems = nix_supported_systems
|
|
self.gerrit_change_source = GerritChangeSource(gerrit_server, gerrit_user, gerritport=gerrit_port, identity_file=gerrit_sshkey_path)
|
|
self.url = url
|
|
self.cachix = cachix
|
|
if outputs_path is None:
|
|
self.outputs_path = None
|
|
else:
|
|
self.outputs_path = Path(outputs_path)
|
|
|
|
def configure(self, config: dict[str, Any]) -> None:
|
|
worker_config = json.loads(read_secret_file(self.nix_workers_secret_name))
|
|
worker_names = []
|
|
|
|
config.setdefault("projects", [])
|
|
config.setdefault("secretsProviders", [])
|
|
config.setdefault("www", {})
|
|
|
|
for item in worker_config:
|
|
cores = item.get("cores", 0)
|
|
for i in range(cores):
|
|
worker_name = f"{item['name']}-{i:03}"
|
|
config["workers"].append(worker.Worker(worker_name, item["pass"]))
|
|
worker_names.append(worker_name)
|
|
|
|
eval_lock = util.MasterLock("nix-eval")
|
|
|
|
# Configure the Lix project.
|
|
config_for_project(
|
|
config,
|
|
GerritProject(name="lix"),
|
|
worker_names,
|
|
self.nix_supported_systems,
|
|
self.nix_eval_worker_count or multiprocessing.cpu_count(),
|
|
self.nix_eval_max_memory_size,
|
|
eval_lock,
|
|
self.cachix,
|
|
self.outputs_path,
|
|
)
|
|
|
|
config["change_source"] = self.gerrit_change_source
|
|
config["workers"].append(worker.LocalWorker(SKIPPED_BUILDER_NAME))
|
|
config["services"].append(
|
|
reporters.GerritStatusPush(self.gerrit_server, self.gerrit_user,
|
|
port=2022,
|
|
identity_file='/var/lib/buildbot/master/id_gerrit',
|
|
reviewCB=gerritReviewCB,
|
|
reviewArg=self.url,
|
|
startCB=gerritStartCB,
|
|
startArg=self.url,
|
|
summaryCB=gerritSummaryCB,
|
|
summaryArg=self.url)
|
|
)
|
|
|
|
systemd_secrets = secrets.SecretInAFile(
|
|
dirname=os.environ["CREDENTIALS_DIRECTORY"],
|
|
)
|
|
config["secretsProviders"].append(systemd_secrets)
|
|
|
|
config["www"].setdefault("plugins", {})
|
|
config["www"]["plugins"].update(dict(base_react={}))
|
|
|
|
if "auth" not in config["www"]:
|
|
config["www"]["auth"] = LixSystemsOAuth2('buildbot', read_secret_file('buildbot-oauth2-secret'), autologin=True)
|