# Copyright (C) 2017 Canonical Ltd.

#

# This file is part of cloud-init. See LICENSE file for license information.

'''Cloud-init apport interface'''

try:

    from apport.hookutils import (

        attach_file, attach_root_command_outputs, root_command_output)

    has_apport = True

except ImportError:

    has_apport = False

KNOWN_CLOUD_NAMES = [

    'AliYun',

    'AltCloud',

    'Amazon - Ec2',

    'Azure',

    'Bigstep',

    'Brightbox',

    'CloudSigma',

    'CloudStack',

    'DigitalOcean',

    'E24Cloud',

    'GCE - Google Compute Engine',

    'Exoscale',

    'Hetzner Cloud',

    'IBM - (aka SoftLayer or BlueMix)',

    'LXD',

    'MAAS',

    'NoCloud',

    'OpenNebula',

    'OpenStack',

    'Oracle',

    'OVF',

    'RbxCloud - (HyperOne, Rootbox, Rubikon)',

    'OpenTelekomCloud',

    'SAP Converged Cloud',

    'Scaleway',

    'SmartOS',

    'VMware',

    'ZStack',

    'Other'

]

# Potentially clear text collected logs

CLOUDINIT_LOG = '/var/log/cloud-init.log'

CLOUDINIT_OUTPUT_LOG = '/var/log/cloud-init-output.log'

USER_DATA_FILE = '/var/lib/cloud/instance/user-data.txt'  # Optional

def attach_cloud_init_logs(report, ui=None):

    '''Attach cloud-init logs and tarfile from 'cloud-init collect-logs'.'''

    attach_root_command_outputs(report, {

        'cloud-init-log-warnings':

            'egrep -i "warn|error" /var/log/cloud-init.log',

        'cloud-init-output.log.txt': 'cat /var/log/cloud-init-output.log'})

    root_command_output(

        ['cloud-init', 'collect-logs', '-t', '/tmp/cloud-init-logs.tgz'])

    attach_file(report, '/tmp/cloud-init-logs.tgz', 'logs.tgz')

def attach_hwinfo(report, ui=None):

    '''Optionally attach hardware info from lshw.'''

    prompt = (

        'Your device details (lshw) may be useful to developers when'

        ' addressing this bug, but gathering it requires admin privileges.'

        ' Would you like to include this info?')

    if ui and ui.yesno(prompt):

        attach_root_command_outputs(report, {'lshw.txt': 'lshw'})

def attach_cloud_info(report, ui=None):

    '''Prompt for cloud details if available.'''

    if ui:

        prompt = 'Is this machine running in a cloud environment?'

        response = ui.yesno(prompt)

        if response is None:

            raise StopIteration  # User cancelled

        if response:

            prompt = ('Please select the cloud vendor or environment in which'

                      ' this instance is running')

            response = ui.choice(prompt, KNOWN_CLOUD_NAMES)

            if response:

                report['CloudName'] = KNOWN_CLOUD_NAMES[response[0]]

            else:

                report['CloudName'] = 'None'

def attach_user_data(report, ui=None):

    '''Optionally provide user-data if desired.'''

    if ui:

        prompt = (

            'Your user-data or cloud-config file can optionally be provided'

            ' from {0} and could be useful to developers when addressing this'

            ' bug. Do you wish to attach user-data to this bug?'.format(

                USER_DATA_FILE))

        response = ui.yesno(prompt)

        if response is None:

            raise StopIteration  # User cancelled

        if response:

            attach_file(report, USER_DATA_FILE, 'user_data.txt')

def add_bug_tags(report):

    '''Add any appropriate tags to the bug.'''

    if 'JournalErrors' in report.keys():

        errors = report['JournalErrors']

        if 'Breaking ordering cycle' in errors:

            report['Tags'] = 'systemd-ordering'

def add_info(report, ui):

    '''This is an entry point to run cloud-init's apport functionality.

    Distros which want apport support will have a cloud-init package-hook at

    /usr/share/apport/package-hooks/cloud-init.py which defines an add_info

    function and returns the result of cloudinit.apport.add_info(report, ui).

    '''

    if not has_apport:

        raise RuntimeError(

            'No apport imports discovered. Apport functionality disabled')

    attach_cloud_init_logs(report, ui)

    attach_hwinfo(report, ui)

    attach_cloud_info(report, ui)

    attach_user_data(report, ui)

    add_bug_tags(report)

    return True

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