788 lines
26 KiB
Python
788 lines
26 KiB
Python
#!/usr/bin/env python3
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import json
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import multiprocessing
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import os
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import random
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import signal
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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 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.log import Log
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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 github_projects import ( # noqa: E402
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GithubProject,
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create_project_hook,
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load_projects,
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refresh_projects,
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)
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from twisted.internet import defer, threads
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from twisted.python.failure import Failure
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class BuildTrigger(Trigger):
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"""
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Dynamic trigger that creates a build for every attribute.
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"""
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def __init__(
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self, scheduler: str, jobs: list[dict[str, Any]], **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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Trigger.__init__(
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self,
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waitForFinish=True,
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schedulerNames=[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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repo_name = build_props.getProperty(
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"github.base.repo.full_name",
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build_props.getProperty("github.repository.full_name"),
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)
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project_id = repo_name.replace("/", "-")
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source = f"nix-eval-{project_id}"
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sch = self.schedulerNames[0]
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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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if repo_name is not None:
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name = f"github:{repo_name}#checks.{name}"
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else:
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name = f"checks.{name}"
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drv_path = job.get("drvPath")
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error = job.get("error")
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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 = 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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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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props.setProperty("error", error, source)
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triggered_schedulers.append((sch, props))
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return triggered_schedulers
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def getCurrentSummary(self) -> dict[str, str]: # noqa: N802
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"""
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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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"""
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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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"""
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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-instanstiate 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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raise Exception(f"Failed to parse line: {line}") from e
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jobs.append(job)
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build_props = self.build.getProperties()
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repo_name = build_props.getProperty(
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"github.base.repo.full_name",
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build_props.getProperty("github.repository.full_name"),
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)
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project_id = repo_name.replace("/", "-")
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scheduler = f"{project_id}-nix-build"
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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: # report eval errors
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filtered_jobs.append(job)
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elif system in self.supported_systems:
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filtered_jobs.append(job)
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self.build.addStepsAfterCurrentStep(
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[BuildTrigger(scheduler=scheduler, name="build flake", jobs=jobs)]
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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, id: uuid.UUID) -> int:
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retries = self.builds[id]
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if retries > 1:
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self.builds[id] = retries - 1
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return retries
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else:
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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 NixBuildCommand(buildstep.ShellMixin, steps.BuildStep):
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"""
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Builds a nix derivation if evaluation was successful,
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otherwise this shows the evaluation error.
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"""
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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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self.observer = logobserver.BufferLogObserver()
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self.addLogObserver("stdio", self.observer)
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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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if error is not None:
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attr = self.getProperty("attr")
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# show eval error
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self.build.results = util.FAILURE
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log: Log = yield self.addLog("nix_error")
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log.addStderr(f"{attr} failed to evaluate:\n{error}")
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return util.FAILURE
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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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"""
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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, **kwargs: Any) -> None:
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super().__init__(**kwargs)
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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 = os.path.basename(props.getProperty("attr"))
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out_path = props.getProperty("out_path")
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# XXX don't hardcode this
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p = Path("/var/www/buildbot/nix-outputs/")
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os.makedirs(p, exist_ok=True)
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(p / attr).write_text(out_path)
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return util.SUCCESS
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class ReloadGithubProjects(steps.BuildStep):
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name = "reload_github_projects"
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def __init__(self, token: str, project_cache_file: Path, **kwargs: Any) -> None:
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self.token = token
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self.project_cache_file = project_cache_file
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super().__init__(**kwargs)
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def reload_projects(self) -> None:
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refresh_projects(self.token, self.project_cache_file)
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@defer.inlineCallbacks
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def run(self) -> Generator[Any, object, Any]:
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d = threads.deferToThread(self.reload_projects)
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self.error_msg = ""
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def error_cb(failure: Failure) -> int:
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self.error_msg += failure.getTraceback()
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return util.FAILURE
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d.addCallbacks(lambda _: util.SUCCESS, error_cb)
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res = yield d
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if res == util.SUCCESS:
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# reload the buildbot config
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os.kill(os.getpid(), signal.SIGHUP)
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return util.SUCCESS
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else:
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log: Log = yield self.addLog("log")
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log.addStderr(f"Failed to reload project list: {self.error_msg}")
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return util.FAILURE
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def reload_github_projects(
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worker_names: list[str],
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github_token_secret: str,
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project_cache_file: Path,
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) -> util.BuilderConfig:
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"""
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Updates the flake an opens a PR for it.
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"""
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factory = util.BuildFactory()
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factory.addStep(
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ReloadGithubProjects(github_token_secret, project_cache_file=project_cache_file)
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)
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return util.BuilderConfig(
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name="reload-github-projects",
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workernames=worker_names,
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factory=factory,
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)
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def nix_update_flake_config(
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project: GithubProject,
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worker_names: list[str],
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github_token_secret: str,
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github_bot_user: str,
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) -> util.BuilderConfig:
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"""
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Updates the flake an opens a PR for it.
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"""
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factory = util.BuildFactory()
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url_with_secret = util.Interpolate(
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f"https://git:%(secret:{github_token_secret})s@github.com/{project.name}"
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)
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factory.addStep(
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steps.Git(
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repourl=url_with_secret,
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alwaysUseLatest=True,
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method="clean",
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submodules=True,
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haltOnFailure=True,
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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="Update flakes",
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env=dict(
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GIT_AUTHOR_NAME=github_bot_user,
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GIT_AUTHOR_EMAIL=f"{github_bot_user}@users.noreply.github.com",
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GIT_COMMITTER_NAME=github_bot_user,
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GIT_COMMITTER_EMAIL=f"{github_bot_user}@users.noreply.github.com",
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),
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command=[
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"nix",
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"flake",
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"update",
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"--commit-lock-file",
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"--commit-lockfile-summary",
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"flake.lock: Update",
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],
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haltOnFailure=True,
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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="Force-Push to update_flake_lock branch",
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command=[
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"git",
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"push",
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"--force",
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"origin",
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"HEAD:refs/heads/update_flake_lock",
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],
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haltOnFailure=True,
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)
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)
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factory.addStep(
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steps.SetPropertyFromCommand(
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env=dict(GITHUB_TOKEN=util.Secret(github_token_secret)),
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command=[
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"gh",
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"pr",
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"view",
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"--json",
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"state",
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"--template",
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"{{.state}}",
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"update_flake_lock",
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],
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decodeRC={0: "SUCCESS", 1: "SUCCESS"},
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property="has_pr",
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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="Create pull-request",
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env=dict(GITHUB_TOKEN=util.Secret(github_token_secret)),
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command=[
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"gh",
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"pr",
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"create",
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"--repo",
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project.name,
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"--title",
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"flake.lock: Update",
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"--body",
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"Automatic buildbot update",
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"--head",
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"refs/heads/update_flake_lock",
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"--base",
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project.default_branch,
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],
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doStepIf=lambda s: s.getProperty("has_pr") != "OPEN",
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)
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)
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return util.BuilderConfig(
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name=f"{project.name}/update-flake",
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project=project.name,
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workernames=worker_names,
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factory=factory,
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)
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def nix_eval_config(
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project: GithubProject,
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worker_names: list[str],
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github_token_secret: str,
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supported_systems: list[str],
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max_memory_size: int = 4096,
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) -> util.BuilderConfig:
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"""
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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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url_with_secret = util.Interpolate(
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f"https://git:%(secret:{github_token_secret})s@github.com/%(prop:project)s"
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)
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factory.addStep(
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steps.Git(
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repourl=url_with_secret,
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method="clean",
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submodules=True,
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haltOnFailure=True,
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)
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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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multiprocessing.cpu_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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# FIXME: don't hardcode this
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"/var/lib/buildbot-worker/gcroot",
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"--force-recurse",
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"--flake",
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".#checks",
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],
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haltOnFailure=True,
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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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def nix_build_config(
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project: GithubProject,
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worker_names: list[str],
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has_cachix_auth_token: bool = False,
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has_cachix_signing_key: bool = False,
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) -> util.BuilderConfig:
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"""
|
|
Builds one nix flake attribute.
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"""
|
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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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"--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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haltOnFailure=True,
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)
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)
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if has_cachix_auth_token or has_cachix_signing_key:
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if has_cachix_signing_key:
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env = dict(CACHIX_SIGNING_KEY=util.Secret("cachix-signing-key"))
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else:
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env = dict(CACHIX_AUTH_TOKEN=util.Secret("cachix-auth-token"))
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factory.addStep(
|
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steps.ShellCommand(
|
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name="Upload cachix",
|
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env=env,
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command=[
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"cachix",
|
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"push",
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util.Secret("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",
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command=[
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"nix-store",
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"--add-root",
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# FIXME: cleanup old build attributes
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util.Interpolate(
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"/nix/var/nix/gcroots/per-user/buildbot-worker/%(prop:project)s/%(prop:attr)s"
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),
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"-r",
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util.Property("out_path"),
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],
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doStepIf=lambda s: s.getProperty("branch")
|
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== s.getProperty("github.repository.default_branch"),
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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="Delete temporary gcroots",
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command=["rm", "-f", util.Interpolate("result-%(prop:attr)s")],
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)
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)
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factory.addStep(UpdateBuildOutput(name="Update build output"))
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return util.BuilderConfig(
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name=f"{project.name}/nix-build",
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project=project.name,
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workernames=worker_names,
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collapseRequests=False,
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env={},
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factory=factory,
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)
|
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|
|
|
|
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()
|
|
|
|
|
|
@dataclass
|
|
class GithubConfig:
|
|
oauth_id: str
|
|
admins: list[str]
|
|
buildbot_user: str
|
|
oauth_secret_name: str = "github-oauth-secret"
|
|
webhook_secret_name: str = "github-webhook-secret"
|
|
token_secret_name: str = "github-token"
|
|
project_cache_file: Path = Path("github-project-cache.json")
|
|
topic: str | None = "build-with-buildbot"
|
|
|
|
def token(self) -> str:
|
|
return read_secret_file(self.token_secret_name)
|
|
|
|
|
|
def config_for_project(
|
|
config: dict[str, Any],
|
|
project: GithubProject,
|
|
credentials: str,
|
|
worker_names: list[str],
|
|
github: GithubConfig,
|
|
nix_supported_systems: list[str],
|
|
nix_eval_max_memory_size: int,
|
|
) -> Project:
|
|
## get a deterministic jitter for the project
|
|
#random.seed(project.name)
|
|
## don't run all projects at the same time
|
|
#jitter = random.randint(1, 60) * 60
|
|
|
|
config["projects"].append(Project(project.name))
|
|
config["schedulers"].extend(
|
|
[
|
|
schedulers.SingleBranchScheduler(
|
|
name=f"default-branch-{project.id}",
|
|
change_filter=util.ChangeFilter(
|
|
repository=project.url,
|
|
filter_fn=lambda c: c.branch
|
|
== c.properties.getProperty("github.repository.default_branch"),
|
|
),
|
|
builderNames=[f"{project.name}/nix-eval"],
|
|
),
|
|
# this is compatible with bors or github's merge queue
|
|
schedulers.SingleBranchScheduler(
|
|
name=f"merge-queue-{project.id}",
|
|
change_filter=util.ChangeFilter(
|
|
repository=project.url,
|
|
branch_re="(gh-readonly-queue/.*|staging|trying)",
|
|
),
|
|
builderNames=[f"{project.name}/nix-eval"],
|
|
),
|
|
# build all pull requests
|
|
schedulers.SingleBranchScheduler(
|
|
name=f"prs-{project.id}",
|
|
change_filter=util.ChangeFilter(
|
|
repository=project.url, category="pull"
|
|
),
|
|
builderNames=[f"{project.name}/nix-eval"],
|
|
),
|
|
# this is triggered from `nix-eval`
|
|
schedulers.Triggerable(
|
|
name=f"{project.id}-nix-build",
|
|
builderNames=[f"{project.name}/nix-build"],
|
|
),
|
|
# allow to manually trigger a nix-build
|
|
schedulers.ForceScheduler(
|
|
name=f"{project.id}-force", builderNames=[f"{project.name}/nix-eval"]
|
|
),
|
|
# allow to manually update flakes
|
|
schedulers.ForceScheduler(
|
|
name=f"{project.id}-update-flake",
|
|
builderNames=[f"{project.name}/update-flake"],
|
|
buttonName="Update flakes",
|
|
),
|
|
# updates flakes once a week
|
|
#schedulers.Periodic(
|
|
# name=f"{project.id}-update-flake-weekly",
|
|
# builderNames=[f"{project.name}/update-flake"],
|
|
# periodicBuildTimer=24 * 60 * 60 * 7 + jitter,
|
|
#),
|
|
]
|
|
)
|
|
has_cachix_auth_token = os.path.isfile(
|
|
os.path.join(credentials, "cachix-auth-token")
|
|
)
|
|
has_cachix_signing_key = os.path.isfile(
|
|
os.path.join(credentials, "cachix-signing-key")
|
|
)
|
|
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,
|
|
[worker_names[0]],
|
|
github_token_secret=github.token_secret_name,
|
|
supported_systems=nix_supported_systems,
|
|
max_memory_size=nix_eval_max_memory_size,
|
|
),
|
|
nix_build_config(
|
|
project,
|
|
worker_names,
|
|
has_cachix_auth_token,
|
|
has_cachix_signing_key,
|
|
),
|
|
nix_update_flake_config(
|
|
project,
|
|
worker_names,
|
|
github_token_secret=github.token_secret_name,
|
|
github_bot_user=github.buildbot_user,
|
|
),
|
|
]
|
|
)
|
|
|
|
|
|
class NixConfigurator(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>" } ]
|
|
github: GithubConfig,
|
|
url: str,
|
|
nix_supported_systems: list[str],
|
|
nix_eval_max_memory_size: int = 4096,
|
|
nix_workers_secret_name: str = "buildbot-nix-workers",
|
|
) -> None:
|
|
super().__init__()
|
|
self.nix_workers_secret_name = nix_workers_secret_name
|
|
self.nix_eval_max_memory_size = nix_eval_max_memory_size
|
|
self.nix_supported_systems = nix_supported_systems
|
|
self.github = github
|
|
self.url = url
|
|
self.systemd_credentials_dir = os.environ["CREDENTIALS_DIRECTORY"]
|
|
|
|
def configure(self, config: dict[str, Any]) -> None:
|
|
projects = load_projects(self.github.token(), self.github.project_cache_file)
|
|
if self.github.topic is not None:
|
|
projects = [p for p in projects if self.github.topic in p.topics]
|
|
worker_config = json.loads(read_secret_file(self.nix_workers_secret_name))
|
|
worker_names = []
|
|
config["workers"] = config.get("workers", [])
|
|
for item in worker_config:
|
|
cores = item.get("cores", 0)
|
|
for i in range(cores):
|
|
worker_name = f"{item['name']}-{i}"
|
|
config["workers"].append(worker.Worker(worker_name, item["pass"]))
|
|
worker_names.append(worker_name)
|
|
|
|
config["projects"] = config.get("projects", [])
|
|
|
|
webhook_secret = read_secret_file(self.github.webhook_secret_name)
|
|
|
|
for project in projects:
|
|
create_project_hook(
|
|
project.owner,
|
|
project.repo,
|
|
self.github.token(),
|
|
f"{self.url}/change_hook/github",
|
|
webhook_secret,
|
|
)
|
|
|
|
for project in projects:
|
|
config_for_project(
|
|
config,
|
|
project,
|
|
self.systemd_credentials_dir,
|
|
worker_names,
|
|
self.github,
|
|
self.nix_supported_systems,
|
|
self.nix_eval_max_memory_size,
|
|
)
|
|
|
|
# Reload github projects
|
|
config["builders"].append(
|
|
reload_github_projects(
|
|
[worker_names[0]],
|
|
self.github.token(),
|
|
self.github.project_cache_file,
|
|
)
|
|
)
|
|
config["schedulers"].extend(
|
|
[
|
|
schedulers.ForceScheduler(
|
|
name="reload-github-projects",
|
|
builderNames=["reload-github-projects"],
|
|
buttonName="Update projects",
|
|
),
|
|
# project list twice a day
|
|
schedulers.Periodic(
|
|
name="reload-github-projects-bidaily",
|
|
builderNames=["reload-github-projects"],
|
|
periodicBuildTimer=12 * 60 * 60,
|
|
),
|
|
]
|
|
)
|
|
config["services"] = config.get("services", [])
|
|
config["services"].append(
|
|
reporters.GitHubStatusPush(
|
|
token=self.github.token(),
|
|
# Since we dynamically create build steps,
|
|
# we use `virtual_builder_name` in the webinterface
|
|
# so that we distinguish what has beeing build
|
|
context=Interpolate("buildbot/%(prop:status_name)s"),
|
|
)
|
|
)
|
|
systemd_secrets = secrets.SecretInAFile(
|
|
dirname=os.environ["CREDENTIALS_DIRECTORY"]
|
|
)
|
|
config["secretsProviders"] = config.get("secretsProviders", [])
|
|
config["secretsProviders"].append(systemd_secrets)
|
|
config["www"] = config.get("www", {})
|
|
config["www"]["avatar_methods"] = config["www"].get("avatar_methods", [])
|
|
config["www"]["avatar_methods"].append(util.AvatarGitHub())
|
|
config["www"]["auth"] = util.GitHubAuth(
|
|
self.github.oauth_id, read_secret_file(self.github.oauth_secret_name)
|
|
)
|
|
config["www"]["authz"] = util.Authz(
|
|
roleMatchers=[
|
|
util.RolesFromUsername(roles=["admin"], usernames=self.github.admins)
|
|
],
|
|
allowRules=[
|
|
util.AnyEndpointMatcher(role="admin", defaultDeny=False),
|
|
util.AnyControlEndpointMatcher(role="admins"),
|
|
],
|
|
)
|
|
config["www"]["change_hook_dialects"] = config["www"].get(
|
|
"change_hook_dialects", {}
|
|
)
|
|
config["www"]["change_hook_dialects"]["github"] = {
|
|
"secret": webhook_secret,
|
|
"strict": True,
|
|
"token": self.github.token(),
|
|
"github_property_whitelist": "*",
|
|
}
|