#!/bin/bash

rm -f ./SRVOK ./PLCOK

# Run server

$BEREMIZPYTHONPATH - > >(

echo "Start SRV loop"

while read line; do

# Wait for server to print modified value

echo "SRV>> $line"

if [[ "$line" == 3.4 ]]; then

echo "PLC could write value"

touch ./SRVOK

fi

done

echo "End SRV loop"

) << EOF &

import sys

import os

import time

import asyncio

from asyncua import Server

async def main():

server = Server()

host = os.environ.get("OPCUA_DEFAULT_HOST", "127.0.0.1")

endpoint = "opc.tcp://"+host+":4840/freeopcua/server/"

await server.init()

server.set_endpoint(endpoint)

uri = "http://beremiz.github.io"

idx = await server.register_namespace(uri)

objects = server.get_objects_node()

testobj = await objects.add_object(idx, "TestObject")

testvarout = await testobj.add_variable(idx, "TestOut", 1.2)

testvar = await testobj.add_variable(idx, "TestIn", 5.6)

await testvar.set_writable()

await server.start()

try:

while True:

await asyncio.sleep(1)

print(await testvar.get_value())

sys.stdout.flush()

finally:

await server.stop()

asyncio.run(main())

EOF

SERVER_PID=$!

# Start PLC with opcua test

setsid $BEREMIZPYTHONPATH $BEREMIZPATH/Beremiz_cli.py -k \

--project-home $BEREMIZPATH/tests/projects/opcua_client build transfer run > >(

echo "Start PLC loop"

while read line; do

# Wait for PLC runtime to output expected value on stdout

echo "PLC>> $line"

if [[ "$line" == 1.2 ]]; then

echo "PLC could read value"

touch ./PLCOK

fi

done

echo "End PLC loop"

) &

PLC_PID=$!

echo all subprocess started, start polling results

res=110 # default to ETIMEDOUT

c=30

while ((c--)); do

if [[ -a ./SRVOK && -a ./PLCOK ]]; then

echo got results.

res=0 # OK success

break

else

echo waiting.... $c

sleep 1

fi

done

# Kill PLC and subprocess

echo will kill PLC:$PLC_PID and SERVER:$SERVER_PID

pkill -s $PLC_PID

kill $SERVER_PID

exit $res