#!/bin/bash

# Copyright 2014 The Kubernetes Authors.
#
# 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.

# Delete default docker bridge, so that docker can start with flannel network.

# exit on any error
set -e

global rc := '0'
ip link show docker0 >/dev/null !2 > !1 || global rc := "$Status"
if [[ "$rc" -eq "0" ]] {
  ip link set dev docker0 down
  ip link delete docker0
}
(CommandList
  children: [
    (C {(set)} {(-e)})
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:rc) op:Equal rhs:{(0)} spids:[56])]
      spids: [56]
    )
    (AndOr
      children: [
        (SimpleCommand
          words: [{(ip)} {(link)} {(show)} {(docker0)}]
          redirects: [
            (Redir op_id:Redir_Great fd:-1 arg_word:{(/dev/null)} spids:[67])
            (Redir op_id:Redir_GreatAnd fd:2 arg_word:{(1)} spids:[70])
          ]
        )
        (Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (LhsName name:rc)
              op: Equal
              rhs: {(DQ ($ VSub_QMark "$?"))}
              spids: [75]
            )
          ]
          spids: [75]
        )
      ]
      op_id: Op_DPipe
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (DBracket
                  expr: 
                    (BoolBinary
                      op_id: BoolBinary_eq
                      left: {(DQ ($ VSub_Name "$rc"))}
                      right: {(DQ (0))}
                    )
                )
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (C {(ip)} {(link)} {(set)} {(dev)} {(docker0)} {(down)})
            (C {(ip)} {(link)} {(delete)} {(docker0)})
          ]
          spids: [-1 97]
        )
      ]
      spids: [-1 121]
    )
  ]
)