redis hash dump by hscan

a.sh

#!/bin/bash

function dump_redis_hash_to_json() {
    # redis の hash をjsonに出力
    key=$1
    num=$2
    output=$3

    cr=0
    while true; do
        cr=$(redis-cli -n 12 HSCAN $key $cr MATCH '*' COUNT $num | {
            read a
            while read x; read y; do
                jo tuuid=$x attrs=$y >&${output}
            done
            echo $a
        })

        echo $cr >&2
        if [ $cr == "0" ]; then
            break
        fi
    done
}

set -ue
exec {fd}> a.json
dump_redis_hash_to_json hoge 100 ${fd}
exec {fd}>&-