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# aws.py - Automation code for Amazon Web Services
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#
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# Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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# no-check-code because Python 3 native.
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import contextlib
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import copy
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import hashlib
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import json
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import os
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import pathlib
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import subprocess
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import time
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import boto3
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import botocore.exceptions
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from .winrm import (
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run_powershell,
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wait_for_winrm,
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)
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SOURCE_ROOT = pathlib.Path(os.path.abspath(__file__)).parent.parent.parent.parent
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INSTALL_WINDOWS_DEPENDENCIES = (SOURCE_ROOT / 'contrib' /
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'install-windows-dependencies.ps1')
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KEY_PAIRS = {
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'automation',
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}
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SECURITY_GROUPS = {
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'windows-dev-1': {
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'description': 'Mercurial Windows instances that perform build automation',
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'ingress': [
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{
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'FromPort': 22,
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'ToPort': 22,
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'IpProtocol': 'tcp',
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'IpRanges': [
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{
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'CidrIp': '0.0.0.0/0',
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'Description': 'SSH from entire Internet',
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},
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],
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},
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{
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'FromPort': 3389,
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'ToPort': 3389,
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'IpProtocol': 'tcp',
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'IpRanges': [
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{
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'CidrIp': '0.0.0.0/0',
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'Description': 'RDP from entire Internet',
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},
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],
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},
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{
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'FromPort': 5985,
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'ToPort': 5986,
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'IpProtocol': 'tcp',
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'IpRanges': [
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{
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'CidrIp': '0.0.0.0/0',
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'Description': 'PowerShell Remoting (Windows Remote Management)',
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},
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],
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}
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],
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},
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}
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IAM_ROLES = {
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'ephemeral-ec2-role-1': {
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'description': 'Mercurial temporary EC2 instances',
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'policy_arns': [
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'arn:aws:iam::aws:policy/service-role/AmazonEC2RoleforSSM',
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],
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},
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}
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ASSUME_ROLE_POLICY_DOCUMENT = '''
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{
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"Version": "2012-10-17",
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"Statement": [
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{
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"Effect": "Allow",
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"Principal": {
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"Service": "ec2.amazonaws.com"
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},
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"Action": "sts:AssumeRole"
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}
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]
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}
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'''.strip()
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IAM_INSTANCE_PROFILES = {
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'ephemeral-ec2-1': {
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'roles': [
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'ephemeral-ec2-role-1',
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],
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}
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}
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# User Data for Windows EC2 instance. Mainly used to set the password
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# and configure WinRM.
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# Inspired by the User Data script used by Packer
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# (from https://www.packer.io/intro/getting-started/build-image.html).
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WINDOWS_USER_DATA = '''
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<powershell>
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# TODO enable this once we figure out what is failing.
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#$ErrorActionPreference = "stop"
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# Set administrator password
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net user Administrator "%s"
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wmic useraccount where "name='Administrator'" set PasswordExpires=FALSE
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# First, make sure WinRM can't be connected to
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netsh advfirewall firewall set rule name="Windows Remote Management (HTTP-In)" new enable=yes action=block
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# Delete any existing WinRM listeners
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winrm delete winrm/config/listener?Address=*+Transport=HTTP 2>$Null
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winrm delete winrm/config/listener?Address=*+Transport=HTTPS 2>$Null
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# Create a new WinRM listener and configure
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winrm create winrm/config/listener?Address=*+Transport=HTTP
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winrm set winrm/config/winrs '@{MaxMemoryPerShellMB="0"}'
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winrm set winrm/config '@{MaxTimeoutms="7200000"}'
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winrm set winrm/config/service '@{AllowUnencrypted="true"}'
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winrm set winrm/config/service '@{MaxConcurrentOperationsPerUser="12000"}'
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winrm set winrm/config/service/auth '@{Basic="true"}'
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winrm set winrm/config/client/auth '@{Basic="true"}'
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# Configure UAC to allow privilege elevation in remote shells
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$Key = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System'
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$Setting = 'LocalAccountTokenFilterPolicy'
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Set-ItemProperty -Path $Key -Name $Setting -Value 1 -Force
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# Configure and restart the WinRM Service; Enable the required firewall exception
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Stop-Service -Name WinRM
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Set-Service -Name WinRM -StartupType Automatic
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netsh advfirewall firewall set rule name="Windows Remote Management (HTTP-In)" new action=allow localip=any remoteip=any
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Start-Service -Name WinRM
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# Disable firewall on private network interfaces so prompts don't appear.
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Set-NetFirewallProfile -Name private -Enabled false
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</powershell>
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'''.lstrip()
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WINDOWS_BOOTSTRAP_POWERSHELL = '''
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Write-Output "installing PowerShell dependencies"
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Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force
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Set-PSRepository -Name PSGallery -InstallationPolicy Trusted
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Install-Module -Name OpenSSHUtils -RequiredVersion 0.0.2.0
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Write-Output "installing OpenSSL server"
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Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0
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# Various tools will attempt to use older versions of .NET. So we enable
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# the feature that provides them so it doesn't have to be auto-enabled
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# later.
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Write-Output "enabling .NET Framework feature"
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Install-WindowsFeature -Name Net-Framework-Core
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'''
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class AWSConnection:
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"""Manages the state of a connection with AWS."""
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def __init__(self, automation, region: str):
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self.automation = automation
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self.local_state_path = automation.state_path
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self.prefix = 'hg-'
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self.session = boto3.session.Session(region_name=region)
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self.ec2client = self.session.client('ec2')
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self.ec2resource = self.session.resource('ec2')
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self.iamclient = self.session.client('iam')
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self.iamresource = self.session.resource('iam')
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ensure_key_pairs(automation.state_path, self.ec2resource)
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self.security_groups = ensure_security_groups(self.ec2resource)
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ensure_iam_state(self.iamresource)
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def key_pair_path_private(self, name):
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"""Path to a key pair private key file."""
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return self.local_state_path / 'keys' / ('keypair-%s' % name)
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def key_pair_path_public(self, name):
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return self.local_state_path / 'keys' / ('keypair-%s.pub' % name)
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def rsa_key_fingerprint(p: pathlib.Path):
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"""Compute the fingerprint of an RSA private key."""
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# TODO use rsa package.
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res = subprocess.run(
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['openssl', 'pkcs8', '-in', str(p), '-nocrypt', '-topk8',
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'-outform', 'DER'],
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capture_output=True,
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check=True)
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sha1 = hashlib.sha1(res.stdout).hexdigest()
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return ':'.join(a + b for a, b in zip(sha1[::2], sha1[1::2]))
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def ensure_key_pairs(state_path: pathlib.Path, ec2resource, prefix='hg-'):
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remote_existing = {}
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for kpi in ec2resource.key_pairs.all():
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if kpi.name.startswith(prefix):
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remote_existing[kpi.name[len(prefix):]] = kpi.key_fingerprint
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# Validate that we have these keys locally.
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key_path = state_path / 'keys'
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key_path.mkdir(exist_ok=True, mode=0o700)
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def remove_remote(name):
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print('deleting key pair %s' % name)
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key = ec2resource.KeyPair(name)
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key.delete()
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def remove_local(name):
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pub_full = key_path / ('keypair-%s.pub' % name)
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priv_full = key_path / ('keypair-%s' % name)
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print('removing %s' % pub_full)
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pub_full.unlink()
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print('removing %s' % priv_full)
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priv_full.unlink()
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local_existing = {}
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for f in sorted(os.listdir(key_path)):
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if not f.startswith('keypair-') or not f.endswith('.pub'):
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continue
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name = f[len('keypair-'):-len('.pub')]
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pub_full = key_path / f
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priv_full = key_path / ('keypair-%s' % name)
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with open(pub_full, 'r', encoding='ascii') as fh:
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data = fh.read()
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if not data.startswith('ssh-rsa '):
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print('unexpected format for key pair file: %s; removing' %
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pub_full)
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pub_full.unlink()
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priv_full.unlink()
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continue
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local_existing[name] = rsa_key_fingerprint(priv_full)
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for name in sorted(set(remote_existing) | set(local_existing)):
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if name not in local_existing:
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actual = '%s%s' % (prefix, name)
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print('remote key %s does not exist locally' % name)
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remove_remote(actual)
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del remote_existing[name]
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elif name not in remote_existing:
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print('local key %s does not exist remotely' % name)
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remove_local(name)
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del local_existing[name]
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elif remote_existing[name] != local_existing[name]:
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print('key fingerprint mismatch for %s; '
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'removing from local and remote' % name)
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remove_local(name)
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remove_remote('%s%s' % (prefix, name))
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del local_existing[name]
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del remote_existing[name]
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missing = KEY_PAIRS - set(remote_existing)
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for name in sorted(missing):
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actual = '%s%s' % (prefix, name)
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print('creating key pair %s' % actual)
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priv_full = key_path / ('keypair-%s' % name)
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pub_full = key_path / ('keypair-%s.pub' % name)
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kp = ec2resource.create_key_pair(KeyName=actual)
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with priv_full.open('w', encoding='ascii') as fh:
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fh.write(kp.key_material)
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fh.write('\n')
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priv_full.chmod(0o0600)
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# SSH public key can be extracted via `ssh-keygen`.
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with pub_full.open('w', encoding='ascii') as fh:
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subprocess.run(
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['ssh-keygen', '-y', '-f', str(priv_full)],
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stdout=fh,
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check=True)
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pub_full.chmod(0o0600)
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def delete_instance_profile(profile):
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for role in profile.roles:
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print('removing role %s from instance profile %s' % (role.name,
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profile.name))
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profile.remove_role(RoleName=role.name)
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print('deleting instance profile %s' % profile.name)
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profile.delete()
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def ensure_iam_state(iamresource, prefix='hg-'):
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"""Ensure IAM state is in sync with our canonical definition."""
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remote_profiles = {}
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for profile in iamresource.instance_profiles.all():
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if profile.name.startswith(prefix):
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remote_profiles[profile.name[len(prefix):]] = profile
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for name in sorted(set(remote_profiles) - set(IAM_INSTANCE_PROFILES)):
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delete_instance_profile(remote_profiles[name])
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del remote_profiles[name]
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remote_roles = {}
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for role in iamresource.roles.all():
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if role.name.startswith(prefix):
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remote_roles[role.name[len(prefix):]] = role
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for name in sorted(set(remote_roles) - set(IAM_ROLES)):
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role = remote_roles[name]
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print('removing role %s' % role.name)
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role.delete()
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del remote_roles[name]
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# We've purged remote state that doesn't belong. Create missing
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# instance profiles and roles.
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for name in sorted(set(IAM_INSTANCE_PROFILES) - set(remote_profiles)):
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actual = '%s%s' % (prefix, name)
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print('creating IAM instance profile %s' % actual)
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profile = iamresource.create_instance_profile(
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InstanceProfileName=actual)
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remote_profiles[name] = profile
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for name in sorted(set(IAM_ROLES) - set(remote_roles)):
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entry = IAM_ROLES[name]
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actual = '%s%s' % (prefix, name)
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print('creating IAM role %s' % actual)
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role = iamresource.create_role(
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RoleName=actual,
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Description=entry['description'],
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AssumeRolePolicyDocument=ASSUME_ROLE_POLICY_DOCUMENT,
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)
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remote_roles[name] = role
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for arn in entry['policy_arns']:
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print('attaching policy %s to %s' % (arn, role.name))
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role.attach_policy(PolicyArn=arn)
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# Now reconcile state of profiles.
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for name, meta in sorted(IAM_INSTANCE_PROFILES.items()):
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profile = remote_profiles[name]
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wanted = {'%s%s' % (prefix, role) for role in meta['roles']}
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have = {role.name for role in profile.roles}
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for role in sorted(have - wanted):
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print('removing role %s from %s' % (role, profile.name))
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profile.remove_role(RoleName=role)
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for role in sorted(wanted - have):
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print('adding role %s to %s' % (role, profile.name))
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profile.add_role(RoleName=role)
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def find_windows_server_2019_image(ec2resource):
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"""Find the Amazon published Windows Server 2019 base image."""
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images = ec2resource.images.filter(
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Filters=[
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{
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'Name': 'owner-alias',
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'Values': ['amazon'],
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},
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{
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'Name': 'state',
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'Values': ['available'],
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},
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{
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'Name': 'image-type',
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'Values': ['machine'],
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},
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{
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'Name': 'name',
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'Values': ['Windows_Server-2019-English-Full-Base-2019.02.13'],
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},
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])
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for image in images:
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return image
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raise Exception('unable to find Windows Server 2019 image')
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def ensure_security_groups(ec2resource, prefix='hg-'):
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"""Ensure all necessary Mercurial security groups are present.
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All security groups are prefixed with ``hg-`` by default. Any security
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groups having this prefix but aren't in our list are deleted.
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"""
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existing = {}
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for group in ec2resource.security_groups.all():
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if group.group_name.startswith(prefix):
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existing[group.group_name[len(prefix):]] = group
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purge = set(existing) - set(SECURITY_GROUPS)
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for name in sorted(purge):
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group = existing[name]
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print('removing legacy security group: %s' % group.group_name)
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group.delete()
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security_groups = {}
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for name, group in sorted(SECURITY_GROUPS.items()):
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if name in existing:
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|
security_groups[name] = existing[name]
|
|
|
continue
|
|
|
|
|
|
actual = '%s%s' % (prefix, name)
|
|
|
print('adding security group %s' % actual)
|
|
|
|
|
|
group_res = ec2resource.create_security_group(
|
|
|
Description=group['description'],
|
|
|
GroupName=actual,
|
|
|
)
|
|
|
|
|
|
group_res.authorize_ingress(
|
|
|
IpPermissions=group['ingress'],
|
|
|
)
|
|
|
|
|
|
security_groups[name] = group_res
|
|
|
|
|
|
return security_groups
|
|
|
|
|
|
|
|
|
def terminate_ec2_instances(ec2resource, prefix='hg-'):
|
|
|
"""Terminate all EC2 instances managed by us."""
|
|
|
waiting = []
|
|
|
|
|
|
for instance in ec2resource.instances.all():
|
|
|
if instance.state['Name'] == 'terminated':
|
|
|
continue
|
|
|
|
|
|
for tag in instance.tags or []:
|
|
|
if tag['Key'] == 'Name' and tag['Value'].startswith(prefix):
|
|
|
print('terminating %s' % instance.id)
|
|
|
instance.terminate()
|
|
|
waiting.append(instance)
|
|
|
|
|
|
for instance in waiting:
|
|
|
instance.wait_until_terminated()
|
|
|
|
|
|
|
|
|
def remove_resources(c, prefix='hg-'):
|
|
|
"""Purge all of our resources in this EC2 region."""
|
|
|
ec2resource = c.ec2resource
|
|
|
iamresource = c.iamresource
|
|
|
|
|
|
terminate_ec2_instances(ec2resource, prefix=prefix)
|
|
|
|
|
|
for image in ec2resource.images.all():
|
|
|
if image.name.startswith(prefix):
|
|
|
remove_ami(ec2resource, image)
|
|
|
|
|
|
for group in ec2resource.security_groups.all():
|
|
|
if group.group_name.startswith(prefix):
|
|
|
print('removing security group %s' % group.group_name)
|
|
|
group.delete()
|
|
|
|
|
|
for profile in iamresource.instance_profiles.all():
|
|
|
if profile.name.startswith(prefix):
|
|
|
delete_instance_profile(profile)
|
|
|
|
|
|
for role in iamresource.roles.all():
|
|
|
if role.name.startswith(prefix):
|
|
|
print('removing role %s' % role.name)
|
|
|
role.delete()
|
|
|
|
|
|
|
|
|
def wait_for_ip_addresses(instances):
|
|
|
"""Wait for the public IP addresses of an iterable of instances."""
|
|
|
for instance in instances:
|
|
|
while True:
|
|
|
if not instance.public_ip_address:
|
|
|
time.sleep(2)
|
|
|
instance.reload()
|
|
|
continue
|
|
|
|
|
|
print('public IP address for %s: %s' % (
|
|
|
instance.id, instance.public_ip_address))
|
|
|
break
|
|
|
|
|
|
|
|
|
def remove_ami(ec2resource, image):
|
|
|
"""Remove an AMI and its underlying snapshots."""
|
|
|
snapshots = []
|
|
|
|
|
|
for device in image.block_device_mappings:
|
|
|
if 'Ebs' in device:
|
|
|
snapshots.append(ec2resource.Snapshot(device['Ebs']['SnapshotId']))
|
|
|
|
|
|
print('deregistering %s' % image.id)
|
|
|
image.deregister()
|
|
|
|
|
|
for snapshot in snapshots:
|
|
|
print('deleting snapshot %s' % snapshot.id)
|
|
|
snapshot.delete()
|
|
|
|
|
|
|
|
|
def wait_for_ssm(ssmclient, instances):
|
|
|
"""Wait for SSM to come online for an iterable of instance IDs."""
|
|
|
while True:
|
|
|
res = ssmclient.describe_instance_information(
|
|
|
Filters=[
|
|
|
{
|
|
|
'Key': 'InstanceIds',
|
|
|
'Values': [i.id for i in instances],
|
|
|
},
|
|
|
],
|
|
|
)
|
|
|
|
|
|
available = len(res['InstanceInformationList'])
|
|
|
wanted = len(instances)
|
|
|
|
|
|
print('%d/%d instances available in SSM' % (available, wanted))
|
|
|
|
|
|
if available == wanted:
|
|
|
return
|
|
|
|
|
|
time.sleep(2)
|
|
|
|
|
|
|
|
|
def run_ssm_command(ssmclient, instances, document_name, parameters):
|
|
|
"""Run a PowerShell script on an EC2 instance."""
|
|
|
|
|
|
res = ssmclient.send_command(
|
|
|
InstanceIds=[i.id for i in instances],
|
|
|
DocumentName=document_name,
|
|
|
Parameters=parameters,
|
|
|
CloudWatchOutputConfig={
|
|
|
'CloudWatchOutputEnabled': True,
|
|
|
},
|
|
|
)
|
|
|
|
|
|
command_id = res['Command']['CommandId']
|
|
|
|
|
|
for instance in instances:
|
|
|
while True:
|
|
|
try:
|
|
|
res = ssmclient.get_command_invocation(
|
|
|
CommandId=command_id,
|
|
|
InstanceId=instance.id,
|
|
|
)
|
|
|
except botocore.exceptions.ClientError as e:
|
|
|
if e.response['Error']['Code'] == 'InvocationDoesNotExist':
|
|
|
print('could not find SSM command invocation; waiting')
|
|
|
time.sleep(1)
|
|
|
continue
|
|
|
else:
|
|
|
raise
|
|
|
|
|
|
if res['Status'] == 'Success':
|
|
|
break
|
|
|
elif res['Status'] in ('Pending', 'InProgress', 'Delayed'):
|
|
|
time.sleep(2)
|
|
|
else:
|
|
|
raise Exception('command failed on %s: %s' % (
|
|
|
instance.id, res['Status']))
|
|
|
|
|
|
|
|
|
@contextlib.contextmanager
|
|
|
def temporary_ec2_instances(ec2resource, config):
|
|
|
"""Create temporary EC2 instances.
|
|
|
|
|
|
This is a proxy to ``ec2client.run_instances(**config)`` that takes care of
|
|
|
managing the lifecycle of the instances.
|
|
|
|
|
|
When the context manager exits, the instances are terminated.
|
|
|
|
|
|
The context manager evaluates to the list of data structures
|
|
|
describing each created instance. The instances may not be available
|
|
|
for work immediately: it is up to the caller to wait for the instance
|
|
|
to start responding.
|
|
|
"""
|
|
|
|
|
|
ids = None
|
|
|
|
|
|
try:
|
|
|
res = ec2resource.create_instances(**config)
|
|
|
|
|
|
ids = [i.id for i in res]
|
|
|
print('started instances: %s' % ' '.join(ids))
|
|
|
|
|
|
yield res
|
|
|
finally:
|
|
|
if ids:
|
|
|
print('terminating instances: %s' % ' '.join(ids))
|
|
|
for instance in res:
|
|
|
instance.terminate()
|
|
|
print('terminated %d instances' % len(ids))
|
|
|
|
|
|
|
|
|
@contextlib.contextmanager
|
|
|
def create_temp_windows_ec2_instances(c: AWSConnection, config):
|
|
|
"""Create temporary Windows EC2 instances.
|
|
|
|
|
|
This is a higher-level wrapper around ``create_temp_ec2_instances()`` that
|
|
|
configures the Windows instance for Windows Remote Management. The emitted
|
|
|
instances will have a ``winrm_client`` attribute containing a
|
|
|
``pypsrp.client.Client`` instance bound to the instance.
|
|
|
"""
|
|
|
if 'IamInstanceProfile' in config:
|
|
|
raise ValueError('IamInstanceProfile cannot be provided in config')
|
|
|
if 'UserData' in config:
|
|
|
raise ValueError('UserData cannot be provided in config')
|
|
|
|
|
|
password = c.automation.default_password()
|
|
|
|
|
|
config = copy.deepcopy(config)
|
|
|
config['IamInstanceProfile'] = {
|
|
|
'Name': 'hg-ephemeral-ec2-1',
|
|
|
}
|
|
|
config.setdefault('TagSpecifications', []).append({
|
|
|
'ResourceType': 'instance',
|
|
|
'Tags': [{'Key': 'Name', 'Value': 'hg-temp-windows'}],
|
|
|
})
|
|
|
config['UserData'] = WINDOWS_USER_DATA % password
|
|
|
|
|
|
with temporary_ec2_instances(c.ec2resource, config) as instances:
|
|
|
wait_for_ip_addresses(instances)
|
|
|
|
|
|
print('waiting for Windows Remote Management service...')
|
|
|
|
|
|
for instance in instances:
|
|
|
client = wait_for_winrm(instance.public_ip_address, 'Administrator', password)
|
|
|
print('established WinRM connection to %s' % instance.id)
|
|
|
instance.winrm_client = client
|
|
|
|
|
|
yield instances
|
|
|
|
|
|
|
|
|
def ensure_windows_dev_ami(c: AWSConnection, prefix='hg-'):
|
|
|
"""Ensure Windows Development AMI is available and up-to-date.
|
|
|
|
|
|
If necessary, a modern AMI will be built by starting a temporary EC2
|
|
|
instance and bootstrapping it.
|
|
|
|
|
|
Obsolete AMIs will be deleted so there is only a single AMI having the
|
|
|
desired name.
|
|
|
|
|
|
Returns an ``ec2.Image`` of either an existing AMI or a newly-built
|
|
|
one.
|
|
|
"""
|
|
|
ec2client = c.ec2client
|
|
|
ec2resource = c.ec2resource
|
|
|
ssmclient = c.session.client('ssm')
|
|
|
|
|
|
name = '%s%s' % (prefix, 'windows-dev')
|
|
|
|
|
|
config = {
|
|
|
'BlockDeviceMappings': [
|
|
|
{
|
|
|
'DeviceName': '/dev/sda1',
|
|
|
'Ebs': {
|
|
|
'DeleteOnTermination': True,
|
|
|
'VolumeSize': 32,
|
|
|
'VolumeType': 'gp2',
|
|
|
},
|
|
|
}
|
|
|
],
|
|
|
'ImageId': find_windows_server_2019_image(ec2resource).id,
|
|
|
'InstanceInitiatedShutdownBehavior': 'stop',
|
|
|
'InstanceType': 't3.medium',
|
|
|
'KeyName': '%sautomation' % prefix,
|
|
|
'MaxCount': 1,
|
|
|
'MinCount': 1,
|
|
|
'SecurityGroupIds': [c.security_groups['windows-dev-1'].id],
|
|
|
}
|
|
|
|
|
|
commands = [
|
|
|
# Need to start the service so sshd_config is generated.
|
|
|
'Start-Service sshd',
|
|
|
'Write-Output "modifying sshd_config"',
|
|
|
r'$content = Get-Content C:\ProgramData\ssh\sshd_config',
|
|
|
'$content = $content -replace "Match Group administrators","" -replace "AuthorizedKeysFile __PROGRAMDATA__/ssh/administrators_authorized_keys",""',
|
|
|
r'$content | Set-Content C:\ProgramData\ssh\sshd_config',
|
|
|
'Import-Module OpenSSHUtils',
|
|
|
r'Repair-SshdConfigPermission C:\ProgramData\ssh\sshd_config -Confirm:$false',
|
|
|
'Restart-Service sshd',
|
|
|
'Write-Output "installing OpenSSL client"',
|
|
|
'Add-WindowsCapability -Online -Name OpenSSH.Client~~~~0.0.1.0',
|
|
|
'Set-Service -Name sshd -StartupType "Automatic"',
|
|
|
'Write-Output "OpenSSH server running"',
|
|
|
]
|
|
|
|
|
|
with INSTALL_WINDOWS_DEPENDENCIES.open('r', encoding='utf-8') as fh:
|
|
|
commands.extend(l.rstrip() for l in fh)
|
|
|
|
|
|
# Disable Windows Defender when bootstrapping because it just slows
|
|
|
# things down.
|
|
|
commands.insert(0, 'Set-MpPreference -DisableRealtimeMonitoring $true')
|
|
|
commands.append('Set-MpPreference -DisableRealtimeMonitoring $false')
|
|
|
|
|
|
# Compute a deterministic fingerprint to determine whether image needs
|
|
|
# to be regenerated.
|
|
|
fingerprint = {
|
|
|
'instance_config': config,
|
|
|
'user_data': WINDOWS_USER_DATA,
|
|
|
'initial_bootstrap': WINDOWS_BOOTSTRAP_POWERSHELL,
|
|
|
'bootstrap_commands': commands,
|
|
|
}
|
|
|
|
|
|
fingerprint = json.dumps(fingerprint, sort_keys=True)
|
|
|
fingerprint = hashlib.sha256(fingerprint.encode('utf-8')).hexdigest()
|
|
|
|
|
|
# Find existing AMIs with this name and delete the ones that are invalid.
|
|
|
# Store a reference to a good image so it can be returned one the
|
|
|
# image state is reconciled.
|
|
|
images = ec2resource.images.filter(
|
|
|
Filters=[{'Name': 'name', 'Values': [name]}])
|
|
|
|
|
|
existing_image = None
|
|
|
|
|
|
for image in images:
|
|
|
if image.tags is None:
|
|
|
print('image %s for %s lacks required tags; removing' % (
|
|
|
image.id, image.name))
|
|
|
remove_ami(ec2resource, image)
|
|
|
else:
|
|
|
tags = {t['Key']: t['Value'] for t in image.tags}
|
|
|
|
|
|
if tags.get('HGIMAGEFINGERPRINT') == fingerprint:
|
|
|
existing_image = image
|
|
|
else:
|
|
|
print('image %s for %s has wrong fingerprint; removing' % (
|
|
|
image.id, image.name))
|
|
|
remove_ami(ec2resource, image)
|
|
|
|
|
|
if existing_image:
|
|
|
return existing_image
|
|
|
|
|
|
print('no suitable Windows development image found; creating one...')
|
|
|
|
|
|
with create_temp_windows_ec2_instances(c, config) as instances:
|
|
|
assert len(instances) == 1
|
|
|
instance = instances[0]
|
|
|
|
|
|
wait_for_ssm(ssmclient, [instance])
|
|
|
|
|
|
# On first boot, install various Windows updates.
|
|
|
# We would ideally use PowerShell Remoting for this. However, there are
|
|
|
# trust issues that make it difficult to invoke Windows Update
|
|
|
# remotely. So we use SSM, which has a mechanism for running Windows
|
|
|
# Update.
|
|
|
print('installing Windows features...')
|
|
|
run_ssm_command(
|
|
|
ssmclient,
|
|
|
[instance],
|
|
|
'AWS-RunPowerShellScript',
|
|
|
{
|
|
|
'commands': WINDOWS_BOOTSTRAP_POWERSHELL.split('\n'),
|
|
|
},
|
|
|
)
|
|
|
|
|
|
# Reboot so all updates are fully applied.
|
|
|
print('rebooting instance %s' % instance.id)
|
|
|
ec2client.reboot_instances(InstanceIds=[instance.id])
|
|
|
|
|
|
time.sleep(15)
|
|
|
|
|
|
print('waiting for Windows Remote Management to come back...')
|
|
|
client = wait_for_winrm(instance.public_ip_address, 'Administrator',
|
|
|
c.automation.default_password())
|
|
|
print('established WinRM connection to %s' % instance.id)
|
|
|
instance.winrm_client = client
|
|
|
|
|
|
print('bootstrapping instance...')
|
|
|
run_powershell(instance.winrm_client, '\n'.join(commands))
|
|
|
|
|
|
print('bootstrap completed; stopping %s to create image' % instance.id)
|
|
|
instance.stop()
|
|
|
|
|
|
ec2client.get_waiter('instance_stopped').wait(
|
|
|
InstanceIds=[instance.id],
|
|
|
WaiterConfig={
|
|
|
'Delay': 5,
|
|
|
})
|
|
|
print('%s is stopped' % instance.id)
|
|
|
|
|
|
image = instance.create_image(
|
|
|
Name=name,
|
|
|
Description='Mercurial Windows development environment',
|
|
|
)
|
|
|
|
|
|
image.create_tags(Tags=[
|
|
|
{
|
|
|
'Key': 'HGIMAGEFINGERPRINT',
|
|
|
'Value': fingerprint,
|
|
|
},
|
|
|
])
|
|
|
|
|
|
print('waiting for image %s' % image.id)
|
|
|
|
|
|
ec2client.get_waiter('image_available').wait(
|
|
|
ImageIds=[image.id],
|
|
|
)
|
|
|
|
|
|
print('image %s available as %s' % (image.id, image.name))
|
|
|
|
|
|
return image
|
|
|
|
|
|
|
|
|
@contextlib.contextmanager
|
|
|
def temporary_windows_dev_instances(c: AWSConnection, image, instance_type,
|
|
|
prefix='hg-', disable_antivirus=False):
|
|
|
"""Create a temporary Windows development EC2 instance.
|
|
|
|
|
|
Context manager resolves to the list of ``EC2.Instance`` that were created.
|
|
|
"""
|
|
|
config = {
|
|
|
'BlockDeviceMappings': [
|
|
|
{
|
|
|
'DeviceName': '/dev/sda1',
|
|
|
'Ebs': {
|
|
|
'DeleteOnTermination': True,
|
|
|
'VolumeSize': 32,
|
|
|
'VolumeType': 'gp2',
|
|
|
},
|
|
|
}
|
|
|
],
|
|
|
'ImageId': image.id,
|
|
|
'InstanceInitiatedShutdownBehavior': 'stop',
|
|
|
'InstanceType': instance_type,
|
|
|
'KeyName': '%sautomation' % prefix,
|
|
|
'MaxCount': 1,
|
|
|
'MinCount': 1,
|
|
|
'SecurityGroupIds': [c.security_groups['windows-dev-1'].id],
|
|
|
}
|
|
|
|
|
|
with create_temp_windows_ec2_instances(c, config) as instances:
|
|
|
if disable_antivirus:
|
|
|
for instance in instances:
|
|
|
run_powershell(
|
|
|
instance.winrm_client,
|
|
|
'Set-MpPreference -DisableRealtimeMonitoring $true')
|
|
|
|
|
|
yield instances
|
|
|
|
