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File Content: `systems.py`

# Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
#     http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.

import ctypes
import os
import subprocess

DEFAULT_CONFIG_FILE = 'codedeploy.onpremises.yml'


class System:
    UNSUPPORTED_SYSTEM_MSG = (
        'Only Ubuntu Server, Red Hat Enterprise Linux Server and '
        'Windows Server operating systems are supported.'
    )

    def __init__(self, params):
        self.session = params.session
        self.s3 = self.session.create_client(
            's3',
            region_name=params.region
        )

    def validate_administrator(self):
        raise NotImplementedError('validate_administrator')

    def install(self, params):
        raise NotImplementedError('install')

    def uninstall(self, params):
        raise NotImplementedError('uninstall')


class Windows(System):
    CONFIG_DIR = r'C:\ProgramData\Amazon\CodeDeploy'
    CONFIG_FILE = 'conf.onpremises.yml'
    CONFIG_PATH = r'{0}\{1}'.format(CONFIG_DIR, CONFIG_FILE)
    INSTALLER = 'codedeploy-agent.msi'

    def validate_administrator(self):
        if not ctypes.windll.shell32.IsUserAnAdmin():
            raise RuntimeError(
                'You must run this command as an Administrator.'
            )

    def install(self, params):
        if 'installer' in params:
            self.INSTALLER = params.installer

        process = subprocess.Popen(
            [
                'powershell.exe',
                '-Command', 'Stop-Service',
                '-Name', 'codedeployagent'
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        not_found = (
            "Cannot find any service with service name 'codedeployagent'"
        )
        if process.returncode != 0 and not_found not in error:
            raise RuntimeError(
                'Failed to stop the AWS CodeDeploy Agent:\n{0}'.format(error)
            )

        response = self.s3.get_object(Bucket=params.bucket, Key=params.key)
        with open(self.INSTALLER, 'wb') as f:
            f.write(response['Body'].read())

        subprocess.check_call(
            [
                r'.\{0}'.format(self.INSTALLER),
                '/quiet',
                '/l', r'.\codedeploy-agent-install-log.txt'
            ],
            shell=True
        )
        subprocess.check_call([
            'powershell.exe',
            '-Command', 'Restart-Service',
            '-Name', 'codedeployagent'
        ])

        process = subprocess.Popen(
            [
                'powershell.exe',
                '-Command', 'Get-Service',
                '-Name', 'codedeployagent'
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        if "Running" not in output:
            raise RuntimeError(
                'The AWS CodeDeploy Agent did not start after installation.'
            )

    def uninstall(self, params):
        process = subprocess.Popen(
            [
                'powershell.exe',
                '-Command', 'Stop-Service',
                '-Name', 'codedeployagent'
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        not_found = (
            "Cannot find any service with service name 'codedeployagent'"
        )
        if process.returncode == 0:
            self._remove_agent()
        elif not_found not in error:
            raise RuntimeError(
                'Failed to stop the AWS CodeDeploy Agent:\n{0}'.format(error)
            )

    def _remove_agent(self):
        process = subprocess.Popen(
            [
                'wmic',
                'product', 'where', 'name="CodeDeploy Host Agent"',
                'call', 'uninstall', '/nointeractive'
            ],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        if process.returncode != 0:
            raise RuntimeError(
                'Failed to uninstall the AWS CodeDeploy Agent:\n{0}'.format(
                    error
                )
            )


class Linux(System):
    CONFIG_DIR = '/etc/codedeploy-agent/conf'
    CONFIG_FILE = DEFAULT_CONFIG_FILE
    CONFIG_PATH = '{0}/{1}'.format(CONFIG_DIR, CONFIG_FILE)
    INSTALLER = 'install'

    def validate_administrator(self):
        if os.geteuid() != 0:
            raise RuntimeError('You must run this command as sudo.')

    def install(self, params):
        if 'installer' in params:
            self.INSTALLER = params.installer

        self._update_system(params)
        self._stop_agent(params)

        response = self.s3.get_object(Bucket=params.bucket, Key=params.key)
        with open(self.INSTALLER, 'wb') as f:
            f.write(response['Body'].read())

        subprocess.check_call(
            ['chmod', '+x', './{0}'.format(self.INSTALLER)]
        )

        credentials = self.session.get_credentials()
        environment = os.environ.copy()
        environment['AWS_REGION'] = params.region
        environment['AWS_ACCESS_KEY_ID'] = credentials.access_key
        environment['AWS_SECRET_ACCESS_KEY'] = credentials.secret_key
        if credentials.token is not None:
            environment['AWS_SESSION_TOKEN'] = credentials.token
        subprocess.check_call(
            ['./{0}'.format(self.INSTALLER), 'auto'],
            env=environment
        )

    def uninstall(self, params):
        process = self._stop_agent(params)
        if process.returncode == 0:
            self._remove_agent(params)

    def _update_system(self, params):
        raise NotImplementedError('preinstall')

    def _remove_agent(self, params):
        raise NotImplementedError('remove_agent')

    def _stop_agent(self, params):
        process = subprocess.Popen(
            ['service', 'codedeploy-agent', 'stop'],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE
        )
        (output, error) = process.communicate()
        if process.returncode != 0 and params.not_found_msg not in error:
            raise RuntimeError(
                'Failed to stop the AWS CodeDeploy Agent:\n{0}'.format(error)
            )
        return process


class Ubuntu(Linux):
    def _update_system(self, params):
        subprocess.check_call(['apt-get', '-y', 'update'])
        subprocess.check_call(['apt-get', '-y', 'install', 'ruby2.0'])

    def _remove_agent(self, params):
        subprocess.check_call(['dpkg', '-r', 'codedeploy-agent'])

    def _stop_agent(self, params):
        params.not_found_msg = 'codedeploy-agent: unrecognized service'
        return Linux._stop_agent(self, params)


class RHEL(Linux):
    def _update_system(self, params):
        subprocess.check_call(['yum', '-y', 'install', 'ruby'])

    def _remove_agent(self, params):
        subprocess.check_call(['yum', '-y', 'erase', 'codedeploy-agent'])

    def _stop_agent(self, params):
        params.not_found_msg = 'Redirecting to /bin/systemctl stop  codedeploy-agent.service'
        return Linux._stop_agent(self, params)
Name	Size	Permission
__pycache__	---	0755
__init__.py	565 bytes	0644
codedeploy.py	2212 bytes	0644
deregister.py	6205 bytes	0644
install.py	4205 bytes	0644
locationargs.py	5910 bytes	0644
push.py	10675 bytes	0644
register.py	7196 bytes	0644
systems.py	7661 bytes	0644
uninstall.py	2202 bytes	0644
utils.py	4640 bytes	0644
File Content: systems.py

File Content: `systems.py`
