# Copyright 2018 Rackspace, US Inc.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License 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.

# Codes the driver_agent can return to the octavia-lib driver_lib
DRVR_STATUS_CODE_FAILED = 500
DRVR_STATUS_CODE_OK = 200

STATUS_CODE = 'status_code'
FAULT_STRING = 'fault_string'
STATS_OBJECT = 'stats_object'
STATS_OBJECT_ID = 'stats_object_id'
STATS_RECORD = 'stats_record'
STATUS_OBJECT = 'status_object'
STATUS_OBJECT_ID = 'status_object_id'
STATUS_RECORD = 'status_record'

# Octavia objects
LOADBALANCERS = 'loadbalancers'
LISTENERS = 'listeners'
POOLS = 'pools'
HEALTHMONITORS = 'healthmonitors'
MEMBERS = 'members'
L7POLICIES = 'l7policies'
L7RULES = 'l7rules'
FLAVOR = 'flavor'

# ID fields
ID = 'id'

# Octavia statistics fields
ACTIVE_CONNECTIONS = 'active_connections'
BYTES_IN = 'bytes_in'
BYTES_OUT = 'bytes_out'
REQUEST_ERRORS = 'request_errors'
TOTAL_CONNECTIONS = 'total_connections'

# Constants common to all Octavia provider drivers
HEALTH_MONITOR_PING = 'PING'
HEALTH_MONITOR_TCP = 'TCP'
HEALTH_MONITOR_HTTP = 'HTTP'
HEALTH_MONITOR_HTTPS = 'HTTPS'
HEALTH_MONITOR_TLS_HELLO = 'TLS-HELLO'
HEALTH_MONITOR_UDP_CONNECT = 'UDP-CONNECT'
SUPPORTED_HEALTH_MONITOR_TYPES = (HEALTH_MONITOR_HTTP, HEALTH_MONITOR_HTTPS,
                                  HEALTH_MONITOR_PING, HEALTH_MONITOR_TCP,
                                  HEALTH_MONITOR_TLS_HELLO,
                                  HEALTH_MONITOR_UDP_CONNECT)

HEALTH_MONITOR_HTTP_METHOD_GET = 'GET'
HEALTH_MONITOR_HTTP_METHOD_HEAD = 'HEAD'
HEALTH_MONITOR_HTTP_METHOD_POST = 'POST'
HEALTH_MONITOR_HTTP_METHOD_PUT = 'PUT'
HEALTH_MONITOR_HTTP_METHOD_DELETE = 'DELETE'
HEALTH_MONITOR_HTTP_METHOD_TRACE = 'TRACE'
HEALTH_MONITOR_HTTP_METHOD_OPTIONS = 'OPTIONS'
HEALTH_MONITOR_HTTP_METHOD_CONNECT = 'CONNECT'
HEALTH_MONITOR_HTTP_METHOD_PATCH = 'PATCH'
HEALTH_MONITOR_HTTP_DEFAULT_METHOD = HEALTH_MONITOR_HTTP_METHOD_GET
SUPPORTED_HEALTH_MONITOR_HTTP_METHODS = (
    HEALTH_MONITOR_HTTP_METHOD_GET, HEALTH_MONITOR_HTTP_METHOD_HEAD,
    HEALTH_MONITOR_HTTP_METHOD_POST, HEALTH_MONITOR_HTTP_METHOD_PUT,
    HEALTH_MONITOR_HTTP_METHOD_DELETE, HEALTH_MONITOR_HTTP_METHOD_TRACE,
    HEALTH_MONITOR_HTTP_METHOD_OPTIONS, HEALTH_MONITOR_HTTP_METHOD_CONNECT,
    HEALTH_MONITOR_HTTP_METHOD_PATCH)

L7POLICY_ACTION_REJECT = 'REJECT'
L7POLICY_ACTION_REDIRECT_TO_URL = 'REDIRECT_TO_URL'
L7POLICY_ACTION_REDIRECT_TO_POOL = 'REDIRECT_TO_POOL'
L7POLICY_ACTION_REDIRECT_PREFIX = 'REDIRECT_PREFIX'
SUPPORTED_L7POLICY_ACTIONS = (L7POLICY_ACTION_REJECT,
                              L7POLICY_ACTION_REDIRECT_TO_URL,
                              L7POLICY_ACTION_REDIRECT_TO_POOL,
                              L7POLICY_ACTION_REDIRECT_PREFIX)

L7RULE_COMPARE_TYPE_REGEX = 'REGEX'
L7RULE_COMPARE_TYPE_STARTS_WITH = 'STARTS_WITH'
L7RULE_COMPARE_TYPE_ENDS_WITH = 'ENDS_WITH'
L7RULE_COMPARE_TYPE_CONTAINS = 'CONTAINS'
L7RULE_COMPARE_TYPE_EQUAL_TO = 'EQUAL_TO'
SUPPORTED_L7RULE_COMPARE_TYPES = (L7RULE_COMPARE_TYPE_REGEX,
                                  L7RULE_COMPARE_TYPE_STARTS_WITH,
                                  L7RULE_COMPARE_TYPE_ENDS_WITH,
                                  L7RULE_COMPARE_TYPE_CONTAINS,
                                  L7RULE_COMPARE_TYPE_EQUAL_TO)

L7RULE_TYPE_HOST_NAME = 'HOST_NAME'
L7RULE_TYPE_PATH = 'PATH'
L7RULE_TYPE_FILE_TYPE = 'FILE_TYPE'
L7RULE_TYPE_HEADER = 'HEADER'
L7RULE_TYPE_COOKIE = 'COOKIE'
SUPPORTED_L7RULE_TYPES = (L7RULE_TYPE_HOST_NAME, L7RULE_TYPE_PATH,
                          L7RULE_TYPE_FILE_TYPE, L7RULE_TYPE_HEADER,
                          L7RULE_TYPE_COOKIE)

LB_ALGORITHM_ROUND_ROBIN = 'ROUND_ROBIN'
LB_ALGORITHM_LEAST_CONNECTIONS = 'LEAST_CONNECTIONS'
LB_ALGORITHM_SOURCE_IP = 'SOURCE_IP'
SUPPORTED_LB_ALGORITHMS = (LB_ALGORITHM_LEAST_CONNECTIONS,
                           LB_ALGORITHM_ROUND_ROBIN,
                           LB_ALGORITHM_SOURCE_IP)

OPERATING_STATUS = 'operating_status'
ONLINE = 'ONLINE'
OFFLINE = 'OFFLINE'
DEGRADED = 'DEGRADED'
ERROR = 'ERROR'
DRAINING = 'DRAINING'
NO_MONITOR = 'NO_MONITOR'
SUPPORTED_OPERATING_STATUSES = (ONLINE, OFFLINE, DEGRADED, ERROR, DRAINING,
                                NO_MONITOR)

PROTOCOL_TCP = 'TCP'
PROTOCOL_UDP = 'UDP'
PROTOCOL_HTTP = 'HTTP'
PROTOCOL_HTTPS = 'HTTPS'
PROTOCOL_TERMINATED_HTTPS = 'TERMINATED_HTTPS'
PROTOCOL_PROXY = 'PROXY'
SUPPORTED_PROTOCOLS = (PROTOCOL_TCP, PROTOCOL_HTTPS, PROTOCOL_HTTP,
                       PROTOCOL_TERMINATED_HTTPS, PROTOCOL_PROXY, PROTOCOL_UDP)

PROVISIONING_STATUS = 'provisioning_status'
# Amphora has been allocated to a load balancer
AMPHORA_ALLOCATED = 'ALLOCATED'
# Amphora is being built
AMPHORA_BOOTING = 'BOOTING'
# Amphora is ready to be allocated to a load balancer
AMPHORA_READY = 'READY'
ACTIVE = 'ACTIVE'
PENDING_DELETE = 'PENDING_DELETE'
PENDING_UPDATE = 'PENDING_UPDATE'
PENDING_CREATE = 'PENDING_CREATE'
DELETED = 'DELETED'
SUPPORTED_PROVISIONING_STATUSES = (ACTIVE, AMPHORA_ALLOCATED,
                                   AMPHORA_BOOTING, AMPHORA_READY,
                                   PENDING_DELETE, PENDING_CREATE,
                                   PENDING_UPDATE, DELETED, ERROR)

SESSION_PERSISTENCE_SOURCE_IP = 'SOURCE_IP'
SESSION_PERSISTENCE_HTTP_COOKIE = 'HTTP_COOKIE'
SESSION_PERSISTENCE_APP_COOKIE = 'APP_COOKIE'
SUPPORTED_SP_TYPES = (SESSION_PERSISTENCE_SOURCE_IP,
                      SESSION_PERSISTENCE_HTTP_COOKIE,
                      SESSION_PERSISTENCE_APP_COOKIE)

# List of HTTP headers which are supported for insertion
SUPPORTED_HTTP_HEADERS = ['X-Forwarded-For',
                          'X-Forwarded-Port',
                          'X-Forwarded-Proto']