retry wrapper script for azure xplat tools

razure

#!/bin/bash -u
declare -i retries=${1:?"no retry count"}
shift
declare -i time_wait=${1:?"no time out sec"}
shift

declare result_code=0 

for i in $(seq 0 $retries); do
    /usr/bin/azure "$@"
    result_code=$? 
    if [ $result_code -ne 0 ]; then
#	if [ -f azure.err ]; then
	if cat azure.err 1>&2 ; then
	    mv azure.err azure.err.old 
	    status_code=`awk '/, statusCode:/ {print $6} /^  statusCode:/ {print $2}' azure.err`
	    if [[ "$status_code" =~ (307|404) ]]; then
		# not retryable error
		exit $result_code
	    fi
	fi
	if [ $i -eq 0 ]; then
	    echo "error start retry. " 1>&2
	else
	    echo -n "."  1>&2
	fi
	test $i -ne $retries && sleep $time_wait
    else
	exit $result_code
    fi
done

test $retries -ne 0 && echo "timed out abort.."  1>&2
exit $result_code