#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Google
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
# ----------------------------------------------------------------------------
#
#     ***     AUTO GENERATED CODE    ***    AUTO GENERATED CODE     ***
#
# ----------------------------------------------------------------------------
#
#     This file is automatically generated by Magic Modules and manual
#     changes will be clobbered when the file is regenerated.
#
#     Please read more about how to change this file at
#     https://www.github.com/GoogleCloudPlatform/magic-modules
#
# ----------------------------------------------------------------------------

from __future__ import absolute_import, division, print_function
__metaclass__ = type

################################################################################
# Documentation
################################################################################

ANSIBLE_METADATA = {'metadata_version': '1.1',
                    'status': ["preview"],
                    'supported_by': 'community'}

DOCUMENTATION = '''
---
module: gcp_compute_backend_service
description:
    - Creates a BackendService resource in the specified project using the data included
      in the request.
short_description: Creates a GCP BackendService
version_added: 2.6
author: Google Inc. (@googlecloudplatform)
requirements:
    - python >= 2.6
    - requests >= 2.18.4
    - google-auth >= 1.3.0
options:
    state:
        description:
            - Whether the given object should exist in GCP
        choices: ['present', 'absent']
        default: 'present'
    affinity_cookie_ttl_sec:
        description:
            - Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to
              0, the cookie is non-persistent and lasts only until the end of the browser session
              (or equivalent). The maximum allowed value for TTL is one day.
            - When the load balancing scheme is INTERNAL, this field is not used.
        required: false
    backends:
        description:
            - The list of backends that serve this BackendService.
        required: false
        suboptions:
            balancing_mode:
                description:
                    - Specifies the balancing mode for this backend.
                    - For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid
                      values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
                    - This cannot be used for internal load balancing.
                required: false
                choices: ['UTILIZATION', 'RATE', 'CONNECTION']
            capacity_scaler:
                description:
                    - A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION,
                      RATE or CONNECTION).
                    - Default value is 1, which means the group will serve up to 100% of its configured
                      capacity (depending on balancingMode). A setting of 0 means the group is completely
                      drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
                    - This cannot be used for internal load balancing.
                required: false
            description:
                description:
                    - An optional description of this resource.
                    - Provide this property when you create the resource.
                required: false
            group:
                description:
                    - A reference to InstanceGroup resource.
                required: false
            max_connections:
                description:
                    - The max number of simultaneous connections for the group. Can be used with either
                      CONNECTION or UTILIZATION balancing modes.
                    - For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be
                      set.
                    - This cannot be used for internal load balancing.
                required: false
            max_connections_per_instance:
                description:
                    - The max number of simultaneous connections that a single backend instance can handle.
                      This is used to calculate the capacity of the group. Can be used in either CONNECTION
                      or UTILIZATION balancing modes.
                    - For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be
                      set.
                    - This cannot be used for internal load balancing.
                required: false
            max_rate:
                description:
                    - The max requests per second (RPS) of the group.
                    - Can be used with either RATE or UTILIZATION balancing modes, but required if RATE
                      mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
                    - This cannot be used for internal load balancing.
                required: false
            max_rate_per_instance:
                description:
                    - The max requests per second (RPS) that a single backend instance can handle. This
                      is used to calculate the capacity of the group. Can be used in either balancing
                      mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
                    - This cannot be used for internal load balancing.
                required: false
            max_utilization:
                description:
                    - Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target
                      for the group. The default is 0.8. Valid range is [0.0, 1.0].
                    - This cannot be used for internal load balancing.
                required: false
    cdn_policy:
        description:
            - Cloud CDN configuration for this BackendService.
        required: false
        suboptions:
            cache_key_policy:
                description:
                    - The CacheKeyPolicy for this CdnPolicy.
                required: false
                suboptions:
                    include_host:
                        description:
                            - If true requests to different hosts will be cached separately.
                        required: false
                        type: bool
                    include_protocol:
                        description:
                            - If true, http and https requests will be cached separately.
                        required: false
                        type: bool
                    include_query_string:
                        description:
                            - If true, include query string parameters in the cache key according to query_string_whitelist
                              and query_string_blacklist. If neither is set, the entire query string will be included.
                            - If false, the query string will be excluded from the cache key entirely.
                        required: false
                        type: bool
                    query_string_blacklist:
                        description:
                            - Names of query string parameters to exclude in cache keys.
                            - All other parameters will be included. Either specify query_string_whitelist or
                              query_string_blacklist, not both.
                            - "'&' and '=' will be percent encoded and not treated as delimiters."
                        required: false
                    query_string_whitelist:
                        description:
                            - Names of query string parameters to include in cache keys.
                            - All other parameters will be excluded. Either specify query_string_whitelist or
                              query_string_blacklist, not both.
                            - "'&' and '=' will be percent encoded and not treated as delimiters."
                        required: false
    connection_draining:
        description:
            - Settings for connection draining.
        required: false
        suboptions:
            draining_timeout_sec:
                description:
                    - Time for which instance will be drained (not accept new connections, but still work
                      to finish started).
                required: false
    description:
        description:
            - An optional description of this resource.
        required: false
    enable_cdn:
        description:
            - If true, enable Cloud CDN for this BackendService.
            - When the load balancing scheme is INTERNAL, this field is not used.
        required: false
        type: bool
    health_checks:
        description:
            - The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health
              checking this BackendService. Currently at most one health check can be specified,
              and a health check is required.
            - For internal load balancing, a URL to a HealthCheck resource must be specified instead.
        required: false
    name:
        description:
            - Name of the resource. Provided by the client when the resource is created. The name
              must be 1-63 characters long, and comply with RFC1035. Specifically, the name must
              be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?`
              which means the first character must be a lowercase letter, and all following characters
              must be a dash, lowercase letter, or digit, except the last character, which cannot
              be a dash.
        required: false
    port_name:
        description:
            - Name of backend port. The same name should appear in the instance groups referenced
              by this service. Required when the load balancing scheme is EXTERNAL.
            - When the load balancing scheme is INTERNAL, this field is not used.
        required: false
    protocol:
        description:
            - The protocol this BackendService uses to communicate with backends.
            - Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
            - For internal load balancing, the possible values are TCP and UDP, and the default
              is TCP.
        required: false
        choices: ['HTTP', 'HTTPS', 'TCP', 'SSL']
    region:
        description:
            - A reference to Region resource.
        required: false
    session_affinity:
        description:
            - Type of session affinity to use. The default is NONE.
            - When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
            - When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO,
              or CLIENT_IP_PORT_PROTO.
            - When the protocol is UDP, this field is not used.
        required: false
        choices: ['NONE', 'CLIENT_IP', 'GENERATED_COOKIE', 'CLIENT_IP_PROTO', 'CLIENT_IP_PORT_PROTO']
    timeout_sec:
        description:
            - How many seconds to wait for the backend before considering it a failed request.
              Default is 30 seconds. Valid range is [1, 86400].
        required: false
        aliases: [timeout_seconds]
extends_documentation_fragment: gcp
'''

EXAMPLES = '''
- name: create a instance group
  gcp_compute_instance_group:
      name: 'instancegroup-backendservice'
      zone: 'us-central1-a'
      project: "{{ gcp_project }}"
      auth_kind: "{{ gcp_cred_kind }}"
      service_account_file: "{{ gcp_cred_file }}"
      scopes:
        - https://www.googleapis.com/auth/compute
      state: present
  register: instancegroup
- name: create a http health check
  gcp_compute_http_health_check:
      name: 'httphealthcheck-backendservice'
      healthy_threshold: 10
      port: 8080
      timeout_sec: 2
      unhealthy_threshold: 5
      project: "{{ gcp_project }}"
      auth_kind: "{{ gcp_cred_kind }}"
      service_account_file: "{{ gcp_cred_file }}"
      scopes:
        - https://www.googleapis.com/auth/compute
      state: present
  register: healthcheck
- name: create a backend service
  gcp_compute_backend_service:
      name: testObject
      backends:
        - group: "{{ instancegroup }}"
      health_checks:
        - "{{ healthcheck.selfLink }}"
      enable_cdn: true
      project: testProject
      auth_kind: service_account
      service_account_file: /tmp/auth.pem
      scopes:
        - https://www.googleapis.com/auth/compute
      state: present
'''

RETURN = '''
    affinity_cookie_ttl_sec:
        description:
            - Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to
              0, the cookie is non-persistent and lasts only until the end of the browser session
              (or equivalent). The maximum allowed value for TTL is one day.
            - When the load balancing scheme is INTERNAL, this field is not used.
        returned: success
        type: int
    backends:
        description:
            - The list of backends that serve this BackendService.
        returned: success
        type: complex
        contains:
            balancing_mode:
                description:
                    - Specifies the balancing mode for this backend.
                    - For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid
                      values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
                    - This cannot be used for internal load balancing.
                returned: success
                type: str
            capacity_scaler:
                description:
                    - A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION,
                      RATE or CONNECTION).
                    - Default value is 1, which means the group will serve up to 100% of its configured
                      capacity (depending on balancingMode). A setting of 0 means the group is completely
                      drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
                    - This cannot be used for internal load balancing.
                returned: success
                type: str
            description:
                description:
                    - An optional description of this resource.
                    - Provide this property when you create the resource.
                returned: success
                type: str
            group:
                description:
                    - A reference to InstanceGroup resource.
                returned: success
                type: dict
            max_connections:
                description:
                    - The max number of simultaneous connections for the group. Can be used with either
                      CONNECTION or UTILIZATION balancing modes.
                    - For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be
                      set.
                    - This cannot be used for internal load balancing.
                returned: success
                type: int
            max_connections_per_instance:
                description:
                    - The max number of simultaneous connections that a single backend instance can handle.
                      This is used to calculate the capacity of the group. Can be used in either CONNECTION
                      or UTILIZATION balancing modes.
                    - For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be
                      set.
                    - This cannot be used for internal load balancing.
                returned: success
                type: int
            max_rate:
                description:
                    - The max requests per second (RPS) of the group.
                    - Can be used with either RATE or UTILIZATION balancing modes, but required if RATE
                      mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
                    - This cannot be used for internal load balancing.
                returned: success
                type: int
            max_rate_per_instance:
                description:
                    - The max requests per second (RPS) that a single backend instance can handle. This
                      is used to calculate the capacity of the group. Can be used in either balancing
                      mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
                    - This cannot be used for internal load balancing.
                returned: success
                type: str
            max_utilization:
                description:
                    - Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target
                      for the group. The default is 0.8. Valid range is [0.0, 1.0].
                    - This cannot be used for internal load balancing.
                returned: success
                type: str
    cdn_policy:
        description:
            - Cloud CDN configuration for this BackendService.
        returned: success
        type: complex
        contains:
            cache_key_policy:
                description:
                    - The CacheKeyPolicy for this CdnPolicy.
                returned: success
                type: complex
                contains:
                    include_host:
                        description:
                            - If true requests to different hosts will be cached separately.
                        returned: success
                        type: bool
                    include_protocol:
                        description:
                            - If true, http and https requests will be cached separately.
                        returned: success
                        type: bool
                    include_query_string:
                        description:
                            - If true, include query string parameters in the cache key according to query_string_whitelist
                              and query_string_blacklist. If neither is set, the entire query string will be included.
                            - If false, the query string will be excluded from the cache key entirely.
                        returned: success
                        type: bool
                    query_string_blacklist:
                        description:
                            - Names of query string parameters to exclude in cache keys.
                            - All other parameters will be included. Either specify query_string_whitelist or
                              query_string_blacklist, not both.
                            - "'&' and '=' will be percent encoded and not treated as delimiters."
                        returned: success
                        type: list
                    query_string_whitelist:
                        description:
                            - Names of query string parameters to include in cache keys.
                            - All other parameters will be excluded. Either specify query_string_whitelist or
                              query_string_blacklist, not both.
                            - "'&' and '=' will be percent encoded and not treated as delimiters."
                        returned: success
                        type: list
    connection_draining:
        description:
            - Settings for connection draining.
        returned: success
        type: complex
        contains:
            draining_timeout_sec:
                description:
                    - Time for which instance will be drained (not accept new connections, but still work
                      to finish started).
                returned: success
                type: int
    creation_timestamp:
        description:
            - Creation timestamp in RFC3339 text format.
        returned: success
        type: str
    description:
        description:
            - An optional description of this resource.
        returned: success
        type: str
    enable_cdn:
        description:
            - If true, enable Cloud CDN for this BackendService.
            - When the load balancing scheme is INTERNAL, this field is not used.
        returned: success
        type: bool
    health_checks:
        description:
            - The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health
              checking this BackendService. Currently at most one health check can be specified,
              and a health check is required.
            - For internal load balancing, a URL to a HealthCheck resource must be specified instead.
        returned: success
        type: list
    id:
        description:
            - The unique identifier for the resource.
        returned: success
        type: int
    name:
        description:
            - Name of the resource. Provided by the client when the resource is created. The name
              must be 1-63 characters long, and comply with RFC1035. Specifically, the name must
              be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?`
              which means the first character must be a lowercase letter, and all following characters
              must be a dash, lowercase letter, or digit, except the last character, which cannot
              be a dash.
        returned: success
        type: str
    port_name:
        description:
            - Name of backend port. The same name should appear in the instance groups referenced
              by this service. Required when the load balancing scheme is EXTERNAL.
            - When the load balancing scheme is INTERNAL, this field is not used.
        returned: success
        type: str
    protocol:
        description:
            - The protocol this BackendService uses to communicate with backends.
            - Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
            - For internal load balancing, the possible values are TCP and UDP, and the default
              is TCP.
        returned: success
        type: str
    region:
        description:
            - A reference to Region resource.
        returned: success
        type: str
    session_affinity:
        description:
            - Type of session affinity to use. The default is NONE.
            - When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
            - When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO,
              or CLIENT_IP_PORT_PROTO.
            - When the protocol is UDP, this field is not used.
        returned: success
        type: str
    timeout_sec:
        description:
            - How many seconds to wait for the backend before considering it a failed request.
              Default is 30 seconds. Valid range is [1, 86400].
        returned: success
        type: int
'''

################################################################################
# Imports
################################################################################

from ansible.module_utils.gcp_utils import navigate_hash, GcpSession, GcpModule, GcpRequest, remove_nones_from_dict, replace_resource_dict
import json
import re
import time

################################################################################
# Main
################################################################################


def main():
    """Main function"""

    module = GcpModule(
        argument_spec=dict(
            state=dict(default='present', choices=['present', 'absent'], type='str'),
            affinity_cookie_ttl_sec=dict(type='int'),
            backends=dict(type='list', elements='dict', options=dict(
                balancing_mode=dict(type='str', choices=['UTILIZATION', 'RATE', 'CONNECTION']),
                capacity_scaler=dict(type='str'),
                description=dict(type='str'),
                group=dict(type='dict'),
                max_connections=dict(type='int'),
                max_connections_per_instance=dict(type='int'),
                max_rate=dict(type='int'),
                max_rate_per_instance=dict(type='str'),
                max_utilization=dict(type='str')
            )),
            cdn_policy=dict(type='dict', options=dict(
                cache_key_policy=dict(type='dict', options=dict(
                    include_host=dict(type='bool'),
                    include_protocol=dict(type='bool'),
                    include_query_string=dict(type='bool'),
                    query_string_blacklist=dict(type='list', elements='str'),
                    query_string_whitelist=dict(type='list', elements='str')
                ))
            )),
            connection_draining=dict(type='dict', options=dict(
                draining_timeout_sec=dict(type='int')
            )),
            description=dict(type='str'),
            enable_cdn=dict(type='bool'),
            health_checks=dict(type='list', elements='str'),
            name=dict(type='str'),
            port_name=dict(type='str'),
            protocol=dict(type='str', choices=['HTTP', 'HTTPS', 'TCP', 'SSL']),
            region=dict(type='str'),
            session_affinity=dict(type='str', choices=['NONE', 'CLIENT_IP', 'GENERATED_COOKIE', 'CLIENT_IP_PROTO', 'CLIENT_IP_PORT_PROTO']),
            timeout_sec=dict(type='int', aliases=['timeout_seconds'])
        )
    )

    state = module.params['state']
    kind = 'compute#backendService'

    fetch = fetch_resource(module, self_link(module), kind)
    changed = False

    if fetch:
        if state == 'present':
            if is_different(module, fetch):
                fetch = update(module, self_link(module), kind, fetch)
                changed = True
        else:
            delete(module, self_link(module), kind, fetch)
            fetch = {}
            changed = True
    else:
        if state == 'present':
            fetch = create(module, collection(module), kind)
            changed = True
        else:
            fetch = {}

    fetch.update({'changed': changed})

    module.exit_json(**fetch)


def create(module, link, kind):
    auth = GcpSession(module, 'compute')
    return wait_for_operation(module, auth.post(link, resource_to_request(module)))


def update(module, link, kind, fetch):
    auth = GcpSession(module, 'compute')
    return wait_for_operation(module, auth.put(link, resource_to_request(module)))


def delete(module, link, kind, fetch):
    auth = GcpSession(module, 'compute')
    return wait_for_operation(module, auth.delete(link))


def resource_to_request(module):
    request = {
        u'kind': 'compute#backendService',
        u'affinityCookieTtlSec': module.params.get('affinity_cookie_ttl_sec'),
        u'backends': BackendServiceBackendArray(module.params.get('backends', []), module).to_request(),
        u'cdnPolicy': BackeServiCdnPolic(module.params.get('cdn_policy', {}), module).to_request(),
        u'connectionDraining': BackeServiConneDrain(module.params.get('connection_draining', {}), module).to_request(),
        u'description': module.params.get('description'),
        u'enableCDN': module.params.get('enable_cdn'),
        u'healthChecks': module.params.get('health_checks'),
        u'name': module.params.get('name'),
        u'portName': module.params.get('port_name'),
        u'protocol': module.params.get('protocol'),
        u'region': region_selflink(module.params.get('region'), module.params),
        u'sessionAffinity': module.params.get('session_affinity'),
        u'timeoutSec': module.params.get('timeout_sec')
    }
    return_vals = {}
    for k, v in request.items():
        if v:
            return_vals[k] = v

    return return_vals


def fetch_resource(module, link, kind):
    auth = GcpSession(module, 'compute')
    return return_if_object(module, auth.get(link), kind)


def self_link(module):
    return "https://www.googleapis.com/compute/v1/projects/{project}/global/backendServices/{name}".format(**module.params)


def collection(module):
    return "https://www.googleapis.com/compute/v1/projects/{project}/global/backendServices".format(**module.params)


def return_if_object(module, response, kind):
    # If not found, return nothing.
    if response.status_code == 404:
        return None

    # If no content, return nothing.
    if response.status_code == 204:
        return None

    try:
        module.raise_for_status(response)
        result = response.json()
    except getattr(json.decoder, 'JSONDecodeError', ValueError) as inst:
        module.fail_json(msg="Invalid JSON response with error: %s" % inst)

    if navigate_hash(result, ['error', 'errors']):
        module.fail_json(msg=navigate_hash(result, ['error', 'errors']))
    if result['kind'] != kind:
        module.fail_json(msg="Incorrect result: {kind}".format(**result))

    return result


def is_different(module, response):
    request = resource_to_request(module)
    response = response_to_hash(module, response)

    # Remove all output-only from response.
    response_vals = {}
    for k, v in response.items():
        if k in request:
            response_vals[k] = v

    request_vals = {}
    for k, v in request.items():
        if k in response:
            request_vals[k] = v

    return GcpRequest(request_vals) != GcpRequest(response_vals)


# Remove unnecessary properties from the response.
# This is for doing comparisons with Ansible's current parameters.
def response_to_hash(module, response):
    return {
        u'affinityCookieTtlSec': response.get(u'affinityCookieTtlSec'),
        u'backends': BackendServiceBackendArray(response.get(u'backends', []), module).from_response(),
        u'cdnPolicy': BackeServiCdnPolic(response.get(u'cdnPolicy', {}), module).from_response(),
        u'connectionDraining': BackeServiConneDrain(response.get(u'connectionDraining', {}), module).from_response(),
        u'creationTimestamp': response.get(u'creationTimestamp'),
        u'description': response.get(u'description'),
        u'enableCDN': response.get(u'enableCDN'),
        u'healthChecks': response.get(u'healthChecks'),
        u'id': response.get(u'id'),
        u'name': response.get(u'name'),
        u'portName': response.get(u'portName'),
        u'protocol': response.get(u'protocol'),
        u'region': response.get(u'region'),
        u'sessionAffinity': response.get(u'sessionAffinity'),
        u'timeoutSec': response.get(u'timeoutSec')
    }


def region_selflink(name, params):
    if name is None:
        return
    url = r"https://www.googleapis.com/compute/v1/projects/.*/regions/[a-z1-9\-]*"
    if not re.match(url, name):
        name = "https://www.googleapis.com/compute/v1/projects/{project}/regions/%s".format(**params) % name
    return name


def async_op_url(module, extra_data=None):
    if extra_data is None:
        extra_data = {}
    url = "https://www.googleapis.com/compute/v1/projects/{project}/global/operations/{op_id}"
    combined = extra_data.copy()
    combined.update(module.params)
    return url.format(**combined)


def wait_for_operation(module, response):
    op_result = return_if_object(module, response, 'compute#operation')
    if op_result is None:
        return None
    status = navigate_hash(op_result, ['status'])
    wait_done = wait_for_completion(status, op_result, module)
    return fetch_resource(module, navigate_hash(wait_done, ['targetLink']), 'compute#backendService')


def wait_for_completion(status, op_result, module):
    op_id = navigate_hash(op_result, ['name'])
    op_uri = async_op_url(module, {'op_id': op_id})
    while status != 'DONE':
        raise_if_errors(op_result, ['error', 'errors'], 'message')
        time.sleep(1.0)
        if status not in ['PENDING', 'RUNNING', 'DONE']:
            module.fail_json(msg="Invalid result %s" % status)
        op_result = fetch_resource(module, op_uri, 'compute#operation')
        status = navigate_hash(op_result, ['status'])
    return op_result


def raise_if_errors(response, err_path, module):
    errors = navigate_hash(response, err_path)
    if errors is not None:
        module.fail_json(msg=errors)


class BackendServiceBackendArray(object):
    def __init__(self, request, module):
        self.module = module
        if request:
            self.request = request
        else:
            self.request = []

    def to_request(self):
        items = []
        for item in self.request:
            items.append(self._request_for_item(item))
        return items

    def from_response(self):
        items = []
        for item in self.request:
            items.append(self._response_from_item(item))
        return items

    def _request_for_item(self, item):
        return remove_nones_from_dict({
            u'balancingMode': item.get('balancing_mode'),
            u'capacityScaler': item.get('capacity_scaler'),
            u'description': item.get('description'),
            u'group': replace_resource_dict(item.get(u'group', {}), 'selfLink'),
            u'maxConnections': item.get('max_connections'),
            u'maxConnectionsPerInstance': item.get('max_connections_per_instance'),
            u'maxRate': item.get('max_rate'),
            u'maxRatePerInstance': item.get('max_rate_per_instance'),
            u'maxUtilization': item.get('max_utilization')
        })

    def _response_from_item(self, item):
        return remove_nones_from_dict({
            u'balancingMode': item.get(u'balancingMode'),
            u'capacityScaler': item.get(u'capacityScaler'),
            u'description': item.get(u'description'),
            u'group': item.get(u'group'),
            u'maxConnections': item.get(u'maxConnections'),
            u'maxConnectionsPerInstance': item.get(u'maxConnectionsPerInstance'),
            u'maxRate': item.get(u'maxRate'),
            u'maxRatePerInstance': item.get(u'maxRatePerInstance'),
            u'maxUtilization': item.get(u'maxUtilization')
        })


class BackeServiCdnPolic(object):
    def __init__(self, request, module):
        self.module = module
        if request:
            self.request = request
        else:
            self.request = {}

    def to_request(self):
        return remove_nones_from_dict({
            u'cacheKeyPolicy': BackServCachKeyPoli(self.request.get('cache_key_policy', {}), self.module).to_request()
        })

    def from_response(self):
        return remove_nones_from_dict({
            u'cacheKeyPolicy': BackServCachKeyPoli(self.request.get(u'cacheKeyPolicy', {}), self.module).from_response()
        })


class BackServCachKeyPoli(object):
    def __init__(self, request, module):
        self.module = module
        if request:
            self.request = request
        else:
            self.request = {}

    def to_request(self):
        return remove_nones_from_dict({
            u'includeHost': self.request.get('include_host'),
            u'includeProtocol': self.request.get('include_protocol'),
            u'includeQueryString': self.request.get('include_query_string'),
            u'queryStringBlacklist': self.request.get('query_string_blacklist'),
            u'queryStringWhitelist': self.request.get('query_string_whitelist')
        })

    def from_response(self):
        return remove_nones_from_dict({
            u'includeHost': self.request.get(u'includeHost'),
            u'includeProtocol': self.request.get(u'includeProtocol'),
            u'includeQueryString': self.request.get(u'includeQueryString'),
            u'queryStringBlacklist': self.request.get(u'queryStringBlacklist'),
            u'queryStringWhitelist': self.request.get(u'queryStringWhitelist')
        })


class BackeServiConneDrain(object):
    def __init__(self, request, module):
        self.module = module
        if request:
            self.request = request
        else:
            self.request = {}

    def to_request(self):
        return remove_nones_from_dict({
            u'drainingTimeoutSec': self.request.get('draining_timeout_sec')
        })

    def from_response(self):
        return remove_nones_from_dict({
            u'drainingTimeoutSec': self.request.get(u'drainingTimeoutSec')
        })

if __name__ == '__main__':
    main()
