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"""
This module adds shared support for Direct Connect modules.
"""

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

import traceback

try:
    import botocore
except ImportError:
    pass

from .ec2 import AWSRetry


class DirectConnectError(Exception):
    def __init__(self, msg, last_traceback=None, exception=None):
        self.msg = msg
        self.last_traceback = last_traceback
        self.exception = exception


def delete_connection(client, connection_id):
    try:
        AWSRetry.jittered_backoff()(client.delete_connection)(connectionId=connection_id)
    except botocore.exceptions.ClientError as e:
        raise DirectConnectError(msg="Failed to delete DirectConnection {0}.".format(connection_id),
                                 last_traceback=traceback.format_exc(),
                                 exception=e)


def associate_connection_and_lag(client, connection_id, lag_id):
    try:
        AWSRetry.jittered_backoff()(client.associate_connection_with_lag)(connectionId=connection_id,
                                                                          lagId=lag_id)
    except botocore.exceptions.ClientError as e:
        raise DirectConnectError(msg="Failed to associate Direct Connect connection {0}"
                                 " with link aggregation group {1}.".format(connection_id, lag_id),
                                 last_traceback=traceback.format_exc(),
                                 exception=e)


def disassociate_connection_and_lag(client, connection_id, lag_id):
    try:
        AWSRetry.jittered_backoff()(client.disassociate_connection_from_lag)(connectionId=connection_id,
                                                                             lagId=lag_id)
    except botocore.exceptions.ClientError as e:
        raise DirectConnectError(msg="Failed to disassociate Direct Connect connection {0}"
                                 " from link aggregation group {1}.".format(connection_id, lag_id),
                                 last_traceback=traceback.format_exc(),
                                 exception=e)


def delete_virtual_interface(client, virtual_interface):
    try:
        AWSRetry.jittered_backoff()(client.delete_virtual_interface)(virtualInterfaceId=virtual_interface)
    except botocore.exceptions.ClientError as e:
        raise DirectConnectError(msg="Could not delete virtual interface {0}".format(virtual_interface),
                                 last_traceback=traceback.format_exc(),
                                 exception=e)