Get consul services with filter

consul-service-filter.sh

#!/usr/bin/env bash

# export CONSUL_HTTP_ADDR=http://127.0.0.1:8500
# export CONSUL_HTTP_TOKEN=...

service=$1
filter_expression=$2
mode=${3:-'health'}

if [ -z $CONSUL_HTTP_ADDR ]; then
    echo -e "Make sure you define CONSUL_HTTP_ADDR environment variable:\nexport CONSUL_HTTP_ADDR=http://127.0.0.1:8500"
    exit 1;
fi

CONSUL_ARGS=""  
if [ ! -z $CONSUL_HTTP_TOKEN ]; then
    CONSUL_ARGS+="  --header 'X-Consul-Token: ${CONSUL_HTTP_TOKEN}'"
fi

URL=$CONSUL_HTTP_ADDR/v1/$mode/service/$service

curl -s -G $URL $CONSUL_ARGS --data-urlencode "filter=${filter_expression}"


### Usage
# $ consul-service-filter.sh <service_name> <filter_exporession> [mode]
# $ consul-service-filter.sh elasticsearch 'Service.Tags contains "_cluster=abc-discovery-search-01"'
# $ consul-service-filter.sh elasticsearch 'Service.Tags contains "_cluster=abc-discovery-search-01"' | jq .