mirror of
https://github.com/rust-vmm/rust-vmm-ci.git
synced 2026-08-05 03:08:31 +00:00
285971e8c7
v24 contains the rust-src component which miri requires. Signed-off-by: Patrick Roy <roypat@amazon.co.uk>
362 lines
14 KiB
Python
Executable File
362 lines
14 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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# SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
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"""
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This script is printing the Buildkite pipeline.yml to stdout.
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This can also be used as a library to print the steps from a different pipeline
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specified as a parameter to the `generate_test_pipeline`.
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The pipeline is generated based on the test configuration in
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`test_description.json`. The JSON file contains a list of tests to be run by
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all rust-vmm components. Each test has a default timeout of 5 minutes.
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Some components need to override the default configuration such that they can
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access devices while running the tests (for example access to `/dev/kvm`),
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access to a temporary volume, and others. Some components may also need to skip
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some of the tests. As such, this script supports overriding the following
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configurations through environment variables:
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- `X86_LINUX_AGENT_TAGS`: overrides the tags by which the x86_64 linux agent is
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selected.
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- `AARCH64_LINUX_AGENT_TAGS`: overrides the tags by which the aarch64 linux
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agent is selected.
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- `DOCKER_PLUGIN_CONFIG`: specifies additional configuration for the docker
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plugin. For available configuration, please check the
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https://github.com/buildkite-plugins/docker-buildkite-plugin.
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- `TESTS_TO_SKIP`: specifies a list of tests to be skipped.
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- `TIMEOUTS_MIN`: overrides the timeout value for specific tests.
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NOTE: The variable `TESTS_TO_SKIP` is specified as a JSON list with the names
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of the tests to be skipped. The variable `TIMEOUTS_MIN` is a dictionary where
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each key is the name of a test and each value is the number of minutes for the
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timeout. The other variables are specified as dictionaries, where the first key
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is `tests` and its value is a list of test names where the configuration should
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be applied; the second key is `cfg` and its value is a dictionary with the
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actual configuration.
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Examples of a valid configuration:
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```shell
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TESTS_TO_SKIP='["commit-format"]'
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DOCKER_PLUGIN_CONFIG='{
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"tests": ["coverage"],
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"cfg": {
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"devices": [ "/dev/vhost-vdpa-0" ],
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"privileged": true
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}
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}'
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TIMEOUTS_MIN='["style": 30]'
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```
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"""
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import yaml
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import json
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import os
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import sys
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import pathlib
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import copy
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from argparse import ArgumentParser, RawTextHelpFormatter
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from textwrap import dedent
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# This represents the version of the rust-vmm-container used
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# for running the tests.
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CONTAINER_VERSION = "v24"
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# This represents the version of the Buildkite Docker plugin.
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DOCKER_PLUGIN_VERSION = "v5.3.0"
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X86_AGENT_TAGS = os.getenv('X86_LINUX_AGENT_TAGS')
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AARCH64_AGENT_TAGS = os.getenv('AARCH64_LINUX_AGENT_TAGS')
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DOCKER_PLUGIN_CONFIG = os.getenv('DOCKER_PLUGIN_CONFIG')
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TESTS_TO_SKIP = os.getenv('TESTS_TO_SKIP')
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TIMEOUTS_MIN = os.getenv('TIMEOUTS_MIN')
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# This env allows setting the hypervisor on which the tests are running at the
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# pipeline level. This will not override the hypervisor tag in case one is
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# already specified in the test definition.
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# Most of the repositories don't really need to run on KVM per se, but we are
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# experiencing some timeouts mostly with the mshv hosts right now, and we are
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# fixing the default to kvm to work around that problem.
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# More details here: https://github.com/rust-vmm/community/issues/137
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DEFAULT_AGENT_TAG_HYPERVISOR = os.getenv('DEFAULT_AGENT_TAG_HYPERVISOR', 'kvm')
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PARENT_DIR = pathlib.Path(__file__).parent.resolve()
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class BuildkiteStep:
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"""
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This builds a Buildkite step according to a json configuration and the
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environment variables `X86_LINUX_AGENT_TAGS`, `AARCH64_LINUX_AGENT_TAGS`,
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`DOCKER_PLUGIN_CONFIG`, `TESTS_TO_SKIP` and `TIMEOUTS_MIN`.
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The output is a dictionary.
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"""
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def __init__(self):
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"""
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Initialize a Buildkite step with default values.
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"""
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# Default values.
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# The order in which the attributes are initialized is the same as the
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# order in which the keys will appear in the YAML file, because Python
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# dictionaries are ordered. For readability reasons, this order should
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# not be changed.
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self.step_config = {
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'label': None,
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'command': None,
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'retry': {'automatic': False},
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'agents': {'os': 'linux'},
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'plugins': [
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{
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f"docker#{DOCKER_PLUGIN_VERSION}": {
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'image': f"rustvmm/dev:{CONTAINER_VERSION}",
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'always-pull': True
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}
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}
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],
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'timeout_in_minutes': 15
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}
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def _set_platform(self, platform):
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""" Set platform if given in the json input. """
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if platform:
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# We need to change `aarch64` to `arm` because of the way we are
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# setting the tags on the host.
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if platform == 'aarch64':
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platform = 'arm'
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self.step_config['agents']['platform'] = f"{platform}.metal"
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def _set_hypervisor(self, hypervisor):
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""" Set hypervisor if given in the json input. """
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supported_hypervisors = ['kvm', 'mshv']
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if hypervisor:
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if hypervisor in supported_hypervisors:
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self.step_config['agents']['hypervisor'] = hypervisor
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def _set_conditional(self, conditional):
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""" Set conditional if given in the json input. """
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if conditional:
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self.step_config['if'] = conditional
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def _set_timeout_in_minutes(self, timeout):
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""" Set the timeout if given in the json input. """
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if timeout:
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self.step_config['timeout_in_minutes'] = timeout
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def _set_agent_queue(self, queue):
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"""Set the agent queue if provided in the json input."""
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if queue:
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self.step_config['agents']['queue'] = queue
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def _add_docker_config(self, cfg):
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""" Add configuration for docker if given in the json input. """
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if cfg:
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target = self.step_config['plugins'][0][f"docker#{DOCKER_PLUGIN_VERSION}"]
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for key, val in cfg.items():
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target[key] = val
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def _env_change_config(self, test_name, env_var, target, override=False):
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"""
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Helper function to add to/override configuration of `target`
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if `env_var` is set and this test appears in its list.
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"""
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if env_var:
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env_cfg = json.loads(env_var)
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tests = env_cfg.get('tests')
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assert tests, \
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f"Environment variable {env_var} is missing the `tests` key."
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cfg = env_cfg.get('cfg')
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assert cfg, \
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f"Environment variable {env_var} is missing the `cfg` key."
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if test_name in tests:
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if override:
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target.clear()
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for key, val in cfg.items():
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target[key] = val
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def _env_override_agent_tags(self, test_name):
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"""
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Override the tags by which the linux agent is selected
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using the `X86_LINUX_AGENT_TAGS` and `AARCH64_LINUX_AGENT_TAGS`
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environment variables.
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"""
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env_var = None
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platform = self.step_config['agents'].get('platform')
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# Since the platform is optional, only override the config if the
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# platform was provided.
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if platform:
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if platform == 'x86_64.metal' and X86_AGENT_TAGS:
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env_var = X86_AGENT_TAGS
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if platform == 'arm.metal' and AARCH64_AGENT_TAGS:
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env_var = AARCH64_AGENT_TAGS
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target = self.step_config['agents']
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self._env_change_config(test_name, env_var, target, override=True)
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def _env_add_docker_config(self, test_name):
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"""
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Specify additional configuration for the docker plugin using the
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`DOCKER_PLUGIN_CONFIG` environment variable.
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"""
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target = self.step_config['plugins'][0][f"docker#{DOCKER_PLUGIN_VERSION}"]
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self._env_change_config(test_name, DOCKER_PLUGIN_CONFIG, target)
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def _env_override_timeout(self, test_name):
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if TIMEOUTS_MIN:
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timeouts_min = json.loads(TIMEOUTS_MIN)
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if test_name in timeouts_min:
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self.timeout_in_minutes = timeouts_min[test_name]
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def build(self, input):
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"""
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Build a Buildkite step using the `input` configuration that must
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specify some mandatory keys and can also provide optional ones.
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Further configuration from environment variables may be added.
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"""
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test_name = input.get('test_name')
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command = input.get('command')
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platform = input.get('platform')
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hypervisor = input.get('hypervisor')
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docker = input.get('docker_plugin')
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conditional = input.get('conditional')
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timeout = input.get('timeout_in_minutes')
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queue = input.get('queue')
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# Mandatory keys.
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assert test_name, "Step is missing test name."
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platform_string = f"-{platform}" if platform else ""
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self.step_config['label'] = f"{test_name}{platform_string}"
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assert command, "Step is missing command."
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if "{target_platform}" in command:
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assert platform, \
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"Command requires platform, but platform is missing."
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command = command.replace(
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"{target_platform}", platform
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)
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self.step_config['command'] = command
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# Optional keys.
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self._set_platform(platform)
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self._set_hypervisor(hypervisor)
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self._set_conditional(conditional)
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self._add_docker_config(docker)
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self._set_timeout_in_minutes(timeout)
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self._set_agent_queue(queue)
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# Override/add configuration from environment variables.
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self._env_override_agent_tags(test_name)
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self._env_add_docker_config(test_name)
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self._env_override_timeout(test_name)
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# We're now adding the keys for which we don't have explicit support
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# (i.e. there is no checking/updating taking place). We are just
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# forwarding the key, values without any change.
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# We need to filter for keys that have special meaning and which we
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# don't want to re-add.
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special_keys = ['conditional', 'docker_plugin', 'platform', 'test_name', 'queue', 'hypervisor']
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additional_keys = {k: v for k, v in input.items() if not (k in self.step_config) and
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not(k in special_keys)}
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if additional_keys:
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self.step_config.update(additional_keys)
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# Return the object's attributes and their values as a dictionary.
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return self.step_config
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class BuildkiteConfig:
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"""
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This builds the final Buildkite configuration from the json input
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using BuidkiteStep objects. The output is a dictionary that can
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be put into yaml format by the pyyaml package.
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"""
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def __init__(self):
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self.bk_config = None
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def build(self, input):
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""" Build the final Buildkite configuration fron the json input. """
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self.bk_config = {'steps': []}
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tests = input.get('tests')
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assert tests, "Input is missing list of tests."
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for test in tests:
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platforms = test.get('platform')
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test_name = test.get('test_name')
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if TESTS_TO_SKIP:
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tests_to_skip = json.loads(TESTS_TO_SKIP)
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if test_name in tests_to_skip:
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continue
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# The platform is optional. When it is not specified, we don't add
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# it to the step so that we can run the test in any environment.
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if not platforms:
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platforms = [None]
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for platform in platforms:
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step_input = copy.deepcopy(test)
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step_input['platform'] = platform
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if not step_input.get('hypervisor'):
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step_input['hypervisor'] = DEFAULT_AGENT_TAG_HYPERVISOR
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step = BuildkiteStep()
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step_output = step.build(step_input)
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self.bk_config['steps'].append(step_output)
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# Return the object's attributes and their values as a dictionary.
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return self.bk_config
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def generate_pipeline(config_file):
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""" Generate the pipeline yaml file from a json configuration file. """
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with open(config_file) as json_file:
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json_cfg = json.load(json_file)
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json_file.close()
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config = BuildkiteConfig()
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output = config.build(json_cfg)
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yaml.dump(output, sys.stdout, sort_keys=False)
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if __name__ == '__main__':
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help_text = dedent(
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"""
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This script supports overriding the following configurations through
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environment variables:
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- X86_LINUX_AGENT_TAGS: overrides the tags by which the x86_64 linux
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agent is selected.
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- AARCH64_LINUX_AGENT_TAGS: overrides the tags by which the aarch64
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linux agent is selected.
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- DOCKER_PLUGIN_CONFIG: specifies additional configuration for the
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docker plugin. For available configuration, please check
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https://github.com/buildkite-plugins/docker-buildkite-plugin.
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- TESTS_TO_SKIP: specifies a list of tests to be skipped.
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- TIMEOUTS_MIN: overrides the timeout value for specific tests.
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"""
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)
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parser = ArgumentParser(description=help_text,
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formatter_class=RawTextHelpFormatter)
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# By default we're generating the rust-vmm-ci pipeline with the test
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# configuration committed to this repository.
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# This parameter is useful for generating the pipeline for repositories
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# that have custom pipelines, and it helps with keeping the container
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# version the same across pipelines.
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parser.add_argument('-t', '--test-description',
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metavar="JSON_FILE",
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help='The path to the JSON file containing the test'
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' description for the CI.',
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default=f'{PARENT_DIR}/test_description.json')
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args = parser.parse_args()
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generate_pipeline(args.test_description)
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