VILLASnode/tests/integration/pipe-loopback-mqtt.sh

#!/usr/bin/env bash
#
# Integration loopback test for villas pipe.
#
# Author: Steffen Vogel <post@steffenvogel.de>
# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
# SPDX-License-Identifier: Apache-2.0

set -e

DIR=$(mktemp -d)
pushd ${DIR}

function finish {
    popd
    rm -rf ${DIR}
}
trap finish EXIT

NUM_SAMPLES=${NUM_SAMPLES:-100}
FORMAT="protobuf"
VECTORIZE="10"
HOST="localhost"

if [ -n "${CI}" ]; then
    HOST="mosquitto"
else
    HOST="localhost"
fi

cat > config.json << EOF
{
    "nodes": {
        "node1": {
             "type": "mqtt",
             "format": "${FORMAT}",
             "vectorize": ${VECTORIZE},

             "username": "guest",
             "password": "guest",
             "host": "${HOST}",
             "port": 1883,

             "out": {
             	"publish": "test-topic"
             },
             "in": {
             	"subscribe": "test-topic"
             }
        }
    }
}
EOF

villas signal -l ${NUM_SAMPLES} -n random > input.dat

villas pipe -l ${NUM_SAMPLES} config.json node1 > output.dat < <(sleep 2; cat input.dat)

villas compare input.dat output.dat