# cli.py - Command line interface for automation

#

# Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>

#

# This software may be used and distributed according to the terms of the

# GNU General Public License version 2 or any later version.

# no-check-code because Python 3 native.

import argparse

import concurrent.futures as futures

import os

import pathlib

import time

from . import (

    aws,

    HGAutomation,

    linux,

    try_server,

    windows,

)

SOURCE_ROOT = pathlib.Path(

    os.path.abspath(__file__)

).parent.parent.parent.parent

DIST_PATH = SOURCE_ROOT / 'dist'

def bootstrap_linux_dev(

    hga: HGAutomation, aws_region, distros=None, parallel=False

):

    c = hga.aws_connection(aws_region)

    if distros:

        distros = distros.split(',')

    else:

        distros = sorted(linux.DISTROS)

    # TODO There is a wonky interaction involving KeyboardInterrupt whereby

    # the context manager that is supposed to terminate the temporary EC2

    # instance doesn't run. Until we fix this, make parallel building opt-in

    # so we don't orphan instances.

    if parallel:

        fs = []

        with futures.ThreadPoolExecutor(len(distros)) as e:

            for distro in distros:

                fs.append(e.submit(aws.ensure_linux_dev_ami, c, distro=distro))

            for f in fs:

                f.result()

    else:

        for distro in distros:

            aws.ensure_linux_dev_ami(c, distro=distro)

def bootstrap_windows_dev(hga: HGAutomation, aws_region, base_image_name):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_windows_dev_ami(c, base_image_name=base_image_name)

    print('Windows development AMI available as %s' % image.id)

def build_inno(

    hga: HGAutomation, aws_region, arch, revision, version, base_image_name

):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_windows_dev_ami(c, base_image_name=base_image_name)

    DIST_PATH.mkdir(exist_ok=True)

    with aws.temporary_windows_dev_instances(c, image, 't3.medium') as insts:

        instance = insts[0]

        windows.synchronize_hg(SOURCE_ROOT, revision, instance)

        for a in arch:

            windows.build_inno_installer(

                instance.winrm_client, a, DIST_PATH, version=version

            )

def build_wix(

    hga: HGAutomation, aws_region, arch, revision, version, base_image_name

):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_windows_dev_ami(c, base_image_name=base_image_name)

    DIST_PATH.mkdir(exist_ok=True)

    with aws.temporary_windows_dev_instances(c, image, 't3.medium') as insts:

        instance = insts[0]

        windows.synchronize_hg(SOURCE_ROOT, revision, instance)

        for a in arch:

            windows.build_wix_installer(

                instance.winrm_client, a, DIST_PATH, version=version

            )

def build_windows_wheel(

):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_windows_dev_ami(c, base_image_name=base_image_name)

    DIST_PATH.mkdir(exist_ok=True)

    with aws.temporary_windows_dev_instances(c, image, 't3.medium') as insts:

        instance = insts[0]

        windows.synchronize_hg(SOURCE_ROOT, revision, instance)

def build_all_windows_packages(

    hga: HGAutomation, aws_region, revision, version, base_image_name

):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_windows_dev_ami(c, base_image_name=base_image_name)

    DIST_PATH.mkdir(exist_ok=True)

    with aws.temporary_windows_dev_instances(c, image, 't3.medium') as insts:

        instance = insts[0]

        winrm_client = instance.winrm_client

        windows.synchronize_hg(SOURCE_ROOT, revision, instance)

        for arch in ('x86', 'x64'):

            windows.purge_hg(winrm_client)

            windows.build_inno_installer(

                winrm_client, arch, DIST_PATH, version=version

            )

            windows.purge_hg(winrm_client)

            windows.build_wix_installer(

                winrm_client, arch, DIST_PATH, version=version

            )

def terminate_ec2_instances(hga: HGAutomation, aws_region):

    c = hga.aws_connection(aws_region, ensure_ec2_state=False)

    aws.terminate_ec2_instances(c.ec2resource)

def purge_ec2_resources(hga: HGAutomation, aws_region):

    c = hga.aws_connection(aws_region, ensure_ec2_state=False)

    aws.remove_resources(c)

def run_tests_linux(

    hga: HGAutomation,

    aws_region,

    instance_type,

    python_version,

    test_flags,

    distro,

    filesystem,

):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_linux_dev_ami(c, distro=distro)

    t_start = time.time()

    ensure_extra_volume = filesystem not in ('default', 'tmpfs')

    with aws.temporary_linux_dev_instances(

        c, image, instance_type, ensure_extra_volume=ensure_extra_volume

    ) as insts:

        instance = insts[0]

        linux.prepare_exec_environment(

            instance.ssh_client, filesystem=filesystem

        )

        linux.synchronize_hg(SOURCE_ROOT, instance, '.')

        t_prepared = time.time()

        linux.run_tests(instance.ssh_client, python_version, test_flags)

        t_done = time.time()

    t_setup = t_prepared - t_start

    t_all = t_done - t_start

    print(

        'total time: %.1fs; setup: %.1fs; tests: %.1fs; setup overhead: %.1f%%'

        % (t_all, t_setup, t_done - t_prepared, t_setup / t_all * 100.0)

    )

def run_tests_windows(

    hga: HGAutomation,

    aws_region,

    instance_type,

    python_version,

    arch,

    test_flags,

    base_image_name,

):

    c = hga.aws_connection(aws_region)

    image = aws.ensure_windows_dev_ami(c, base_image_name=base_image_name)

    with aws.temporary_windows_dev_instances(

        c, image, instance_type, disable_antivirus=True

    ) as insts:

        instance = insts[0]

        windows.synchronize_hg(SOURCE_ROOT, '.', instance)

        windows.run_tests(

            instance.winrm_client, python_version, arch, test_flags

        )

def publish_windows_artifacts(

    hg: HGAutomation,

    aws_region,

    version: str,

    pypi: bool,

    mercurial_scm_org: bool,

    ssh_username: str,

):

    windows.publish_artifacts(

        DIST_PATH,

        version,

        pypi=pypi,

        mercurial_scm_org=mercurial_scm_org,

        ssh_username=ssh_username,

    )

def run_try(hga: HGAutomation, aws_region: str, rev: str):

    c = hga.aws_connection(aws_region, ensure_ec2_state=False)

    try_server.trigger_try(c, rev=rev)

def get_parser():

    parser = argparse.ArgumentParser()

    parser.add_argument(

        '--state-path',

        default='~/.hgautomation',

        help='Path for local state files',

    )

    parser.add_argument(

        '--aws-region', help='AWS region to use', default='us-west-2',

    )

    subparsers = parser.add_subparsers()

    sp = subparsers.add_parser(

        'bootstrap-linux-dev', help='Bootstrap Linux development environments',

    )

    sp.add_argument(

        '--distros', help='Comma delimited list of distros to bootstrap',

    )

    sp.add_argument(

        '--parallel',

        action='store_true',

        help='Generate AMIs in parallel (not CTRL-c safe)',

    )

    sp.set_defaults(func=bootstrap_linux_dev)

    sp = subparsers.add_parser(

        'bootstrap-windows-dev',

        help='Bootstrap the Windows development environment',

    )

    sp.add_argument(

        '--base-image-name',

        help='AMI name of base image',

        default=aws.WINDOWS_BASE_IMAGE_NAME,

    )

    sp.set_defaults(func=bootstrap_windows_dev)

    sp = subparsers.add_parser(

        'build-all-windows-packages', help='Build all Windows packages',

    )

    sp.add_argument(

        '--revision', help='Mercurial revision to build', default='.',

    )

    sp.add_argument(

        '--version', help='Mercurial version string to use',

    )

    sp.add_argument(

        '--base-image-name',

        help='AMI name of base image',

        default=aws.WINDOWS_BASE_IMAGE_NAME,

    )

    sp.set_defaults(func=build_all_windows_packages)

    sp = subparsers.add_parser(

        'build-inno', help='Build Inno Setup installer(s)',

    )

    sp.add_argument(

        '--arch',

        help='Architecture to build for',

        choices={'x86', 'x64'},

        nargs='*',

        default=['x64'],

    )

    sp.add_argument(

        '--revision', help='Mercurial revision to build', default='.',

    )

    sp.add_argument(

        '--version', help='Mercurial version string to use in installer',

    )

    sp.add_argument(

        '--base-image-name',

        help='AMI name of base image',

        default=aws.WINDOWS_BASE_IMAGE_NAME,

    )

    sp.set_defaults(func=build_inno)

    sp = subparsers.add_parser(

        'build-windows-wheel', help='Build Windows wheel(s)',

    )

    sp.add_argument(

        '--arch',

        help='Architecture to build for',

        choices={'x86', 'x64'},

        nargs='*',

        default=['x64'],

    )

    sp.add_argument(

        '--revision', help='Mercurial revision to build', default='.',

    )

    sp.add_argument(

        '--base-image-name',

        help='AMI name of base image',

        default=aws.WINDOWS_BASE_IMAGE_NAME,

    )

    sp.set_defaults(func=build_windows_wheel)

    sp = subparsers.add_parser('build-wix', help='Build WiX installer(s)')

    sp.add_argument(

        '--arch',

        help='Architecture to build for',

        choices={'x86', 'x64'},

        nargs='*',

        default=['x64'],

    )

    sp.add_argument(

        '--revision', help='Mercurial revision to build', default='.',

    )

    sp.add_argument(

        '--version', help='Mercurial version string to use in installer',

    )

    sp.add_argument(

        '--base-image-name',

        help='AMI name of base image',

        default=aws.WINDOWS_BASE_IMAGE_NAME,

    )

    sp.set_defaults(func=build_wix)

    sp = subparsers.add_parser(

        'terminate-ec2-instances',

        help='Terminate all active EC2 instances managed by us',

    )

    sp.set_defaults(func=terminate_ec2_instances)

    sp = subparsers.add_parser(

        'purge-ec2-resources', help='Purge all EC2 resources managed by us',

    )

    sp.set_defaults(func=purge_ec2_resources)

    sp = subparsers.add_parser('run-tests-linux', help='Run tests on Linux',)

    sp.add_argument(

        '--distro',

        help='Linux distribution to run tests on',

        choices=linux.DISTROS,

        default='debian10',

    )

    sp.add_argument(

        '--filesystem',

        help='Filesystem type to use',

        choices={'btrfs', 'default', 'ext3', 'ext4', 'jfs', 'tmpfs', 'xfs'},

        default='default',

    )

    sp.add_argument(

        '--instance-type',

        help='EC2 instance type to use',

        default='c5.9xlarge',

    )

    sp.add_argument(

        '--python-version',

        help='Python version to use',

        choices={

            'system2',

            'system3',

            '2.7',

            '3.5',

            '3.6',

            '3.7',

            '3.8',

            'pypy',

            'pypy3.5',

            'pypy3.6',

        },

        default='system2',

    )

    sp.add_argument(

        'test_flags',

        help='Extra command line flags to pass to run-tests.py',

        nargs='*',

    )

    sp.set_defaults(func=run_tests_linux)

    sp = subparsers.add_parser(

        'run-tests-windows', help='Run tests on Windows',

    )

    sp.add_argument(

        '--instance-type', help='EC2 instance type to use', default='t3.medium',

    )

    sp.add_argument(

        '--python-version',

        help='Python version to use',

        choices={'2.7', '3.5', '3.6', '3.7', '3.8'},

        default='2.7',

    )

    sp.add_argument(

        '--arch',

        help='Architecture to test',

        choices={'x86', 'x64'},

        default='x64',

    )

    sp.add_argument(

        '--test-flags', help='Extra command line flags to pass to run-tests.py',

    )

    sp.add_argument(

        '--base-image-name',

        help='AMI name of base image',

        default=aws.WINDOWS_BASE_IMAGE_NAME,

    )

    sp.set_defaults(func=run_tests_windows)

    sp = subparsers.add_parser(

        'publish-windows-artifacts',

        help='Publish built Windows artifacts (wheels, installers, etc)',

    )

    sp.add_argument(

        '--no-pypi',

        dest='pypi',

        action='store_false',

        default=True,

        help='Skip uploading to PyPI',

    )

    sp.add_argument(

        '--no-mercurial-scm-org',

        dest='mercurial_scm_org',

        action='store_false',

        default=True,

        help='Skip uploading to www.mercurial-scm.org',

    )

    sp.add_argument(

        '--ssh-username', help='SSH username for mercurial-scm.org',

    )

    sp.add_argument(

        'version', help='Mercurial version string to locate local packages',

    )

    sp.set_defaults(func=publish_windows_artifacts)

    sp = subparsers.add_parser(

        'try', help='Run CI automation against a custom changeset'

    )

    sp.add_argument('-r', '--rev', default='.', help='Revision to run CI on')

    sp.set_defaults(func=run_try)

    return parser

def main():

    parser = get_parser()

    args = parser.parse_args()