578 lines
18 KiB
Python
578 lines
18 KiB
Python
"""Access Ansible Core CI remote services."""
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from __future__ import absolute_import, print_function
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import json
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import os
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import traceback
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import uuid
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import errno
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import time
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import shutil
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from lib.http import (
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HttpClient,
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HttpResponse,
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HttpError,
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)
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from lib.util import (
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ApplicationError,
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run_command,
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make_dirs,
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display,
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is_shippable,
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)
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from lib.config import (
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EnvironmentConfig,
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)
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AWS_ENDPOINTS = {
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'us-east-1': 'https://14blg63h2i.execute-api.us-east-1.amazonaws.com',
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'us-east-2': 'https://g5xynwbk96.execute-api.us-east-2.amazonaws.com',
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}
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class AnsibleCoreCI(object):
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"""Client for Ansible Core CI services."""
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def __init__(self, args, platform, version, stage='prod', persist=True, load=True, name=None, provider=None):
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"""
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:type args: EnvironmentConfig
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:type platform: str
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:type version: str
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:type stage: str
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:type persist: bool
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:type load: bool
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:type name: str
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"""
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self.args = args
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self.platform = platform
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self.version = version
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self.stage = stage
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self.client = HttpClient(args)
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self.connection = None
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self.instance_id = None
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self.endpoint = None
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self.max_threshold = 1
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self.name = name if name else '%s-%s' % (self.platform, self.version)
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self.ci_key = os.path.expanduser('~/.ansible-core-ci.key')
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self.resource = 'jobs'
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# Assign each supported platform to one provider.
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# This is used to determine the provider from the platform when no provider is specified.
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providers = dict(
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aws=(
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'aws',
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'windows',
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'freebsd',
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'vyos',
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'junos',
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'ios',
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'tower',
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'rhel',
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),
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azure=(
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'azure',
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),
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parallels=(
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'osx',
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),
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)
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if provider:
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# override default provider selection (not all combinations are valid)
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self.provider = provider
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else:
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for candidate in providers:
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if platform in providers[candidate]:
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# assign default provider based on platform
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self.provider = candidate
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break
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for candidate in providers:
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if '%s/%s' % (platform, version) in providers[candidate]:
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# assign default provider based on platform and version
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self.provider = candidate
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break
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if self.provider in ('aws', 'azure'):
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if self.provider != 'aws':
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self.resource = self.provider
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if args.remote_aws_region:
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# permit command-line override of region selection
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region = args.remote_aws_region
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# use a dedicated CI key when overriding the region selection
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self.ci_key += '.%s' % args.remote_aws_region
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elif is_shippable():
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# split Shippable jobs across multiple regions to maximize use of launch credits
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if self.platform == 'windows':
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region = 'us-east-2'
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else:
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region = 'us-east-1'
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else:
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# send all non-Shippable jobs to us-east-1 to reduce api key maintenance
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region = 'us-east-1'
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self.endpoints = AWS_ENDPOINTS[region],
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if self.platform == 'windows':
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self.ssh_key = None
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self.port = 5986
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else:
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self.ssh_key = SshKey(args)
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self.port = 22
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elif self.provider == 'parallels':
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self.endpoints = self._get_parallels_endpoints()
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self.max_threshold = 6
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self.ssh_key = SshKey(args)
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self.port = None
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else:
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raise ApplicationError('Unsupported platform: %s' % platform)
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self.path = os.path.expanduser('~/.ansible/test/instances/%s-%s-%s' % (self.name, self.provider, self.stage))
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if persist and load and self._load():
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try:
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display.info('Checking existing %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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self.connection = self.get(always_raise_on=[404])
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display.info('Loaded existing %s/%s from: %s' % (self.platform, self.version, self._uri), verbosity=1)
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except HttpError as ex:
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if ex.status != 404:
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raise
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self._clear()
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display.info('Cleared stale %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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self.instance_id = None
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self.endpoint = None
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elif not persist:
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self.instance_id = None
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self.endpoint = None
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self._clear()
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if self.instance_id:
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self.started = True
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else:
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self.started = False
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self.instance_id = str(uuid.uuid4())
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self.endpoint = None
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display.sensitive.add(self.instance_id)
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def _get_parallels_endpoints(self):
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"""
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:rtype: tuple[str]
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"""
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client = HttpClient(self.args, always=True)
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display.info('Getting available endpoints...', verbosity=1)
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sleep = 3
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for _ in range(1, 10):
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response = client.get('https://s3.amazonaws.com/ansible-ci-files/ansible-test/parallels-endpoints.txt')
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if response.status_code == 200:
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endpoints = tuple(response.response.splitlines())
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display.info('Available endpoints (%d):\n%s' % (len(endpoints), '\n'.join(' - %s' % endpoint for endpoint in endpoints)), verbosity=1)
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return endpoints
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display.warning('HTTP %d error getting endpoints, trying again in %d seconds.' % (response.status_code, sleep))
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time.sleep(sleep)
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raise ApplicationError('Unable to get available endpoints.')
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def start(self):
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"""Start instance."""
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if self.started:
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display.info('Skipping started %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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return
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if is_shippable():
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return self.start_shippable()
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return self.start_remote()
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def start_remote(self):
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"""Start instance for remote development/testing."""
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with open(self.ci_key, 'r') as key_fd:
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auth_key = key_fd.read().strip()
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return self._start(dict(
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remote=dict(
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key=auth_key,
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nonce=None,
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),
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))
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def start_shippable(self):
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"""Start instance on Shippable."""
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return self._start(dict(
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shippable=dict(
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run_id=os.environ['SHIPPABLE_BUILD_ID'],
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job_number=int(os.environ['SHIPPABLE_JOB_NUMBER']),
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),
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))
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def stop(self):
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"""Stop instance."""
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if not self.started:
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display.info('Skipping invalid %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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return
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response = self.client.delete(self._uri)
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if response.status_code == 404:
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self._clear()
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display.info('Cleared invalid %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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return
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if response.status_code == 200:
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self._clear()
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display.info('Stopped running %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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return
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raise self._create_http_error(response)
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def get(self, tries=3, sleep=15, always_raise_on=None):
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"""
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Get instance connection information.
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:type tries: int
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:type sleep: int
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:type always_raise_on: list[int] | None
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:rtype: InstanceConnection
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"""
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if not self.started:
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display.info('Skipping invalid %s/%s instance %s.' % (self.platform, self.version, self.instance_id),
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verbosity=1)
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return None
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if not always_raise_on:
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always_raise_on = []
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if self.connection and self.connection.running:
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return self.connection
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while True:
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tries -= 1
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response = self.client.get(self._uri)
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if response.status_code == 200:
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break
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error = self._create_http_error(response)
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if not tries or response.status_code in always_raise_on:
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raise error
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display.warning('%s. Trying again after %d seconds.' % (error, sleep))
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time.sleep(sleep)
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if self.args.explain:
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self.connection = InstanceConnection(
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running=True,
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hostname='cloud.example.com',
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port=self.port or 12345,
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username='username',
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password='password' if self.platform == 'windows' else None,
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)
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else:
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response_json = response.json()
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status = response_json['status']
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con = response_json['connection']
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self.connection = InstanceConnection(
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running=status == 'running',
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hostname=con['hostname'],
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port=int(con.get('port', self.port)),
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username=con['username'],
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password=con.get('password'),
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)
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if self.connection.password:
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display.sensitive.add(self.connection.password)
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status = 'running' if self.connection.running else 'starting'
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display.info('Status update: %s/%s on instance %s is %s.' %
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(self.platform, self.version, self.instance_id, status),
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verbosity=1)
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return self.connection
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def wait(self):
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"""Wait for the instance to become ready."""
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for _ in range(1, 90):
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if self.get().running:
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return
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time.sleep(10)
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raise ApplicationError('Timeout waiting for %s/%s instance %s.' %
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(self.platform, self.version, self.instance_id))
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@property
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def _uri(self):
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return '%s/%s/%s/%s' % (self.endpoint, self.stage, self.resource, self.instance_id)
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def _start(self, auth):
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"""Start instance."""
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display.info('Initializing new %s/%s instance %s.' % (self.platform, self.version, self.instance_id), verbosity=1)
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if self.platform == 'windows':
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with open('examples/scripts/ConfigureRemotingForAnsible.ps1', 'rb') as winrm_config_fd:
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winrm_config = winrm_config_fd.read().decode('utf-8')
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else:
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winrm_config = None
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data = dict(
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config=dict(
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platform=self.platform,
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version=self.version,
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public_key=self.ssh_key.pub_contents if self.ssh_key else None,
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query=False,
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winrm_config=winrm_config,
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)
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)
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data.update(dict(auth=auth))
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headers = {
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'Content-Type': 'application/json',
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}
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response = self._start_try_endpoints(data, headers)
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self.started = True
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self._save()
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display.info('Started %s/%s from: %s' % (self.platform, self.version, self._uri), verbosity=1)
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if self.args.explain:
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return {}
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return response.json()
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def _start_try_endpoints(self, data, headers):
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"""
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:type data: dict[str, any]
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:type headers: dict[str, str]
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:rtype: HttpResponse
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"""
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threshold = 1
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while threshold <= self.max_threshold:
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for self.endpoint in self.endpoints:
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try:
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return self._start_at_threshold(data, headers, threshold)
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except CoreHttpError as ex:
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if ex.status == 503:
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display.info('Service Unavailable: %s' % ex.remote_message, verbosity=1)
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continue
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display.error(ex.remote_message)
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except HttpError as ex:
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display.error(u'%s' % ex)
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time.sleep(3)
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threshold += 1
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raise ApplicationError('Maximum threshold reached and all endpoints exhausted.')
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def _start_at_threshold(self, data, headers, threshold):
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"""
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:type data: dict[str, any]
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:type headers: dict[str, str]
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:type threshold: int
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:rtype: HttpResponse | None
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"""
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tries = 3
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sleep = 15
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data['threshold'] = threshold
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display.info('Trying endpoint: %s (threshold %d)' % (self.endpoint, threshold), verbosity=1)
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while True:
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tries -= 1
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response = self.client.put(self._uri, data=json.dumps(data), headers=headers)
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if response.status_code == 200:
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return response
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error = self._create_http_error(response)
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if response.status_code == 503:
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raise error
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if not tries:
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raise error
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display.warning('%s. Trying again after %d seconds.' % (error, sleep))
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time.sleep(sleep)
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def _clear(self):
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"""Clear instance information."""
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try:
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self.connection = None
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os.remove(self.path)
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except OSError as ex:
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if ex.errno != errno.ENOENT:
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raise
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def _load(self):
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"""Load instance information."""
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try:
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with open(self.path, 'r') as instance_fd:
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data = instance_fd.read()
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except IOError as ex:
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if ex.errno != errno.ENOENT:
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raise
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return False
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if not data.startswith('{'):
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return False # legacy format
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config = json.loads(data)
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return self.load(config)
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def load(self, config):
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"""
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:type config: dict[str, str]
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:rtype: bool
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"""
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self.instance_id = config['instance_id']
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self.endpoint = config['endpoint']
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self.started = True
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display.sensitive.add(self.instance_id)
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return True
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def _save(self):
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"""Save instance information."""
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if self.args.explain:
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return
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config = self.save()
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make_dirs(os.path.dirname(self.path))
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with open(self.path, 'w') as instance_fd:
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instance_fd.write(json.dumps(config, indent=4, sort_keys=True))
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def save(self):
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"""
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:rtype: dict[str, str]
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"""
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return dict(
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platform_version='%s/%s' % (self.platform, self.version),
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instance_id=self.instance_id,
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endpoint=self.endpoint,
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)
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@staticmethod
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def _create_http_error(response):
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"""
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:type response: HttpResponse
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:rtype: ApplicationError
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"""
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response_json = response.json()
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stack_trace = ''
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if 'message' in response_json:
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message = response_json['message']
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elif 'errorMessage' in response_json:
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message = response_json['errorMessage'].strip()
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if 'stackTrace' in response_json:
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trace = '\n'.join([x.rstrip() for x in traceback.format_list(response_json['stackTrace'])])
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stack_trace = ('\nTraceback (from remote server):\n%s' % trace)
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else:
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message = str(response_json)
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return CoreHttpError(response.status_code, message, stack_trace)
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class CoreHttpError(HttpError):
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"""HTTP response as an error."""
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def __init__(self, status, remote_message, remote_stack_trace):
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"""
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:type status: int
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:type remote_message: str
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:type remote_stack_trace: str
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"""
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super(CoreHttpError, self).__init__(status, '%s%s' % (remote_message, remote_stack_trace))
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self.remote_message = remote_message
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self.remote_stack_trace = remote_stack_trace
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class SshKey(object):
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"""Container for SSH key used to connect to remote instances."""
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KEY_NAME = 'id_rsa'
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PUB_NAME = 'id_rsa.pub'
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def __init__(self, args):
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"""
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:type args: EnvironmentConfig
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"""
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cache_dir = 'test/cache'
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self.key = os.path.join(cache_dir, self.KEY_NAME)
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self.pub = os.path.join(cache_dir, self.PUB_NAME)
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if not os.path.isfile(self.key) or not os.path.isfile(self.pub):
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base_dir = os.path.expanduser('~/.ansible/test/')
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key = os.path.join(base_dir, self.KEY_NAME)
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pub = os.path.join(base_dir, self.PUB_NAME)
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if not args.explain:
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make_dirs(base_dir)
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if not os.path.isfile(key) or not os.path.isfile(pub):
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run_command(args, ['ssh-keygen', '-q', '-t', 'rsa', '-N', '', '-f', key])
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if not args.explain:
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shutil.copy2(key, self.key)
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shutil.copy2(pub, self.pub)
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if args.explain:
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self.pub_contents = None
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else:
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with open(self.pub, 'r') as pub_fd:
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self.pub_contents = pub_fd.read().strip()
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class InstanceConnection(object):
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"""Container for remote instance status and connection details."""
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def __init__(self, running, hostname, port, username, password):
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"""
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:type running: bool
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:type hostname: str
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:type port: int
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:type username: str
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:type password: str | None
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"""
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self.running = running
|
|
self.hostname = hostname
|
|
self.port = port
|
|
self.username = username
|
|
self.password = password
|
|
|
|
def __str__(self):
|
|
if self.password:
|
|
return '%s:%s [%s:%s]' % (self.hostname, self.port, self.username, self.password)
|
|
|
|
return '%s:%s [%s]' % (self.hostname, self.port, self.username)
|