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@danijeel danijeel/aws_retry.sh
Last active Mar 23, 2018

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#bash #aws #retry awscli retry backoff for bash
#!/usr/bin/env bash
set -e
aws_retry() {
last_aws_call=""
local max_attempts=${ATTEMPTS-8}
local timeout=${TIMEOUT-2}
local attempt=0
local exitCode=0
while [[ $attempt < $max_attempts ]]
do
echo "Attempt - $attempt" 1>&2
set +e
last_aws_call=$(${@})
exitCode=$?
set -e
if [[ ! $last_aws_call =~ .*RequestLimitExceeded.* ]] && [[ $exitCode == 0 ]]; then
echo "awscli command ok" 1>&2
echo "exitCode zero on: $@" 1>&2
break
fi
echo "Failure! Retrying in $timeout.." 1>&2
echo "Retry command: $@" 1>&2
sleep $timeout
attempt=$(( attempt + 1 ))
timeout=$(( timeout * 2 ))
done
if [[ $exitCode != 0 ]]; then
echo "You've failed me for the last time! ($@)" 1>&2
exit $exitCode
fi
}
main() {
aws_retry aws ec2 describe-instances ...
echo $last_aws_call
}
main
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