#!/usr/bin/env bash
# Copyright 2017 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.
# Running cmd $RETRIES times in case of failures.
function run-cmd-with-retries {
RETRIES="${RETRIES:-3}"
for attempt in $(seq 1 "${RETRIES}"); do
local ret_val=0
exec 5>&1 # Duplicate &1 to &5 for use below.
# We don't use 'local' to declare result as then ret_val always gets value 0.
# We use tee to output to &5 (redirected to stdout) while also storing it in the variable.
result=$("$@" 2>&1 | tee >(cat - >&5)) || ret_val="$?"
if [[ "${ret_val:-0}" -ne "0" ]]; then
if [[ $(echo "${result}" | grep -c "already exists") -gt 0 ]]; then
if [[ "${attempt}" == 1 ]]; then
# shellcheck disable=SC2154 # Color defined in sourced script
echo -e "${color_red}Failed to $1 $2 ${3:-} as the resource hasn't been deleted from a previous run.${color_norm}" >& 2
exit 1
fi
# shellcheck disable=SC2154 # Color defined in sourced script
echo -e "${color_yellow}Succeeded to $1 $2 ${3:-} in the previous attempt, but status response wasn't received.${color_norm}"
return 0
fi
# shellcheck disable=SC2154 # Color defined in sourced script
echo -e "${color_yellow}Attempt $attempt failed to $1 $2 ${3:-}. Retrying.${color_norm}" >& 2
sleep $((attempt * 5))
else
# shellcheck disable=SC2154 # Color defined in sourced script
echo -e "${color_green}Succeeded to $1 $2 ${3:-}.${color_norm}"
return 0
fi
done
# shellcheck disable=SC2154 # Color defined in sourced script
echo -e "${color_red}Failed to $1 $2 ${3:-}.${color_norm}" >& 2
exit 1
}