Bash script to inspect timouts occuring op WCS service #bash #curl #parallel

script.sh

#!/usr/bin/env bash
URL="https://service.pdok.nl/rws/ahn3/wcs/v1_0?version=2.0.1&request=GetCoverage&service=WCS&CoverageID=ahn3_05m_dtm&crs=http%3A%2F%2Fwww.opengis.net%2Fdef%2Fcrs%2FEPSG%2F0%2F28992&format=image%2Ftiff&scalesize=x%281493%29%2Cy%28808%29&subset=x%28114021.98659130755%2C121802.44239326802%29&subset=y%28487095.239434995%2C491336.6998494373%29"
COUNT=0
RESULT_FILE=$(mktemp)

function do_request(){
    REQ_NR="$1"
    echo ""
    echo "req_nr - $REQ_NR, url - $URL"
    curl "$URL" --max-time 15 -o /dev/null
    if [[ $? -eq 28 ]]; then
        echo 1 >> $RESULT_FILE
        echo "request timed out after 15 seconds, should take about 2"        
    fi
}

echo "# TEST WCS PARALLEL"
N_REQUESTS=80
NR_OF_PARALLEL_REQUEST=20
export -f do_request
export URL
export RESULT_FILE
export NR_OF_PARALLEL_REQUEST

parallel -j$NR_OF_PARALLEL_REQUEST do_request {} ::: $(seq 1 $N_REQUESTS)


echo ""
echo "############################################################"
echo ""
COUNT=$(wc -l $RESULT_FILE | awk 'END {print $1}')
echo "$COUNT requests timed out"

if [[ $COUNT -gt 0 ]];then
    exit 1
else
    exit 0
fi