configuring vulcand from bash

functions.sh

function genID() {
    echo $RANDOM
}

function addHost() {
    if [[ -z $3 ]]
    then
        "addHost hostname ipaddress port"
        exit 1
    fi
    NAME=${1}.local
    IP=$2
    PORT=$3
    echo create host $NAME
    etcdctl ls /vulcand/hosts/$NAME
    [[ $? > 0 ]] && etcdctl mkdir /vulcand/hosts/$NAME # not exists

    echo added location "http://$IP:$PORT"
    etcdctl ls /vulcand/hosts/$NAME/locations/
    [[ $? == 0 ]] && for i in $(etcdctl ls /vulcand/hosts/$NAME/locations/)
    do
        for j in $(etcdctl ls /vulcand/upstreams/$(etcdctl get $i/upstream)/endpoints/)
        do
            if [[ $(etcdctl get $j) == "http://$IP:$PORT" ]]
            then
                echo "Already in configured endpoints"
                return 0
            fi
        done
    done

    echo create upstream
    id=`genID`
    etcdctl ls /vulcand/upstreams/$id
    while [[ $? != 4 ]]
    do
        id=`genID`
        etcdctl ls /vulcand/upstreams/$id
    done
    upstreamId=$id
    etcdctl mkdir /vulcand/upstreams/$upstreamId

    echo create endpoint
    id=`genID`
    etcdctl ls /vulcand/upstreams/$upstreamId/endpoints/$id
    while [[ $? != 4 ]]
    do
        id=`genID`
        etcdctl ls /vulcand/upstreams/$upstreamId/endpoints/$id
    done
    endpointId=$id
    etcdctl set /vulcand/upstreams/$upstreamId/endpoints/$endpointId http://$IP:$PORT

    # etcdctl ls /vulcand/hosts/$NAME/locations
    id=`genID`
    etcdctl ls /vulcand/hosts/$NAME/locations/$id
    while [[ $? != 4 ]]
    do
        id=`genID`
        etcdctl ls /vulcand/hosts/$NAME/locations/$id
    done
    locationId=$id
    etcdctl set /vulcand/hosts/$NAME/locations/$id/path "/.*"
    etcdctl set /vulcand/hosts/$NAME/locations/$id/upstream $upstreamId
}

function delHost() {
    if [[ -z $3 ]]
    then
        "delHost hostname ipaddress port"
        exit 1
    fi
    NAME=${1}.local
    IP=$2
    PORT=$3
    echo remove host $NAME
    etcdctl ls /vulcand/hosts/$NAME
    [[ $? > 0 ]] || etcdctl mkdir /vulcand/hosts/$NAME # not exists

    etcdctl ls /vulcand/hosts/$NAME/locations/
    [[ $? == 0 ]] && for i in $(etcdctl ls /vulcand/hosts/$NAME/locations/)
    do
        for j in $(etcdctl ls /vulcand/upstreams/$(etcdctl get $i/upstream)/endpoints/)
        do
            if [[ $(etcdctl get $j) == "http://$IP:$PORT" ]]
            then
                etcdctl rm $i/path          # remove path
                etcdctl rm $i/upstream      # remove upstream id from host's locations
                etcdctl rmdir $i            # try to remove host's locations 
                etcdctl rmdir $j            # try to remove upstream's endpoints
                etcdctl rmdir $(dirname $j) # remove upstream id 
                etcdctl rmdir $(dirname $i) # remove host locations
                etcdctl rmdir $(dirname $(dirname $j)) # remove upstream
                etcdctl rmdir $(dirname $(dirname $i)) # remove host
                return 0
            fi
        done
    done
}